From c767e1d56ecce211063f7746acdb90cadd7bcea4 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Sun, 11 Nov 2018 20:54:42 +0100
Subject: [PATCH 01/23] add more examples

---
 debian/qualify-clang.sh | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index 60391b6b..9a2506fc 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -80,7 +80,27 @@ echo '#include <emmintrin.h>' > foo.cc
 clang++-$VERSION -c foo.cc
 
 # Bug 913213
-echo '#include <limits.h>' | clang-$VERSION -E -
+echo '#include <limits.h>' | clang-$VERSION -E - > /dev/null
+
+# Bug launchpad #1488254
+echo '
+#include <string>
+std::string hello = "Hello, world!\n";
+' > foo.cc
+
+echo '
+#include <string>
+#include <iostream>
+extern std::string hello;
+int main() {
+    std::cout << hello;
+    return 0;
+} ' > bar.cc
+
+g++ -c foo.cc && g++ foo.o bar.cc && ./a.out  > /dev/null || true
+clang++-$VERSION -c foo.cc && clang++-$VERSION foo.o bar.cc && ./a.out  > /dev/null
+g++ -c foo.cc && clang++ foo.o bar.cc && ./a.out  > /dev/null || true
+clang++-$VERSION -c foo.cc -fPIC && g++ foo.o bar.cc && ./a.out > /dev/null || true
 
 # bug 827866
 echo 'bool testAndSet(void *atomic) {

From e036ff8217eacc28731c048222b21e9c83c00099 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@mozilla.com>
Date: Sun, 11 Nov 2018 21:16:39 +0100
Subject: [PATCH 02/23] prepare the deactivation of stage2

---
 debian/rules | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/debian/rules b/debian/rules
index bb4e2cbd..2ba67bc5 100755
--- a/debian/rules
+++ b/debian/rules
@@ -4,6 +4,9 @@ TARGET_BUILD	:= build-llvm
 TARGET_BUILD_STAGE2    := $(TARGET_BUILD)/tools/clang/stage2-bins
 DEB_INST		:= $(CURDIR)/debian/tmp/
 
+# Disable to move the previous method
+BUILD_METHOD := stage2
+
 GXX_VERSIONED_PACKAGE    := $(shell dpkg-query -W -f '$${Depends}' g++ | grep -o 'g++-[0-9][0-9.]*' | tail -n1 )
 GXX_VERSIONED_EXECUTABLE := $(shell dpkg -L $(GXX_VERSIONED_PACKAGE) | grep '/usr/bin/g++-[0-9][0-9.]*' | xargs ls -d | tail -n1 )
 GCC_VERSION              := $(subst /usr/bin/g++-,,$(GXX_VERSIONED_EXECUTABLE))
@@ -361,12 +364,13 @@ VERBOSE=VERBOSE=1
 #VERBOSE=-v
 
 debian-full-build:
-	$(PRE_PROCESS) make $(NJOBS) -C $(TARGET_BUILD) $(VERBOSE) CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)" REQUIRES_RTTI=1 DEBUGMAKE=1 stage2
-
+	$(PRE_PROCESS) make $(NJOBS) -C $(TARGET_BUILD) $(VERBOSE) CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)" REQUIRES_RTTI=1 DEBUGMAKE=1 $(BUILD_METHOD)
 
 # Check the stage 2 build worked
+	if test "$(BUILD_METHOD)" = "stage2"; then \
 	if ! readelf --string-dump .comment  $(TARGET_BUILD_STAGE2)/bin/clang 2>&1|grep -q "clang version"; then \
 		echo "clang hasn't been built using clang. Bye bye. Check that the stage2 build has been done."; \
+	fi; \
 	fi
 
 	touch $@
@@ -495,7 +499,11 @@ override_dh_auto_install:
 	# Clean up temporary files to make sure the install works
 	rm -rf $(find $(TARGET_BUILD) -wholename '*CMakeFiles*' -not -name CMakeLists.txt -a -name "*.dir" -type d)
 	# install/fast enables a make install without recompiling temporary files
-	$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) stage2-install DESTDIR=$(DEB_INST)/
+	if test "$(BUILD_METHOD)" = "stage2"; then \
+		$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) stage2-install DESTDIR=$(DEB_INST)/; \
+	else \
+		$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) install DESTDIR=$(DEB_INST)/; \
+	fi
 	# Not used on Linux.
 	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/argdumper
 	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/share/clang/clang-format-bbedit.applescript

From ac7fd96f9445896f7f50803dcc8a7018b0d50c09 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@mozilla.com>
Date: Sun, 11 Nov 2018 21:16:39 +0100
Subject: [PATCH 03/23] prepare the deactivation of stage2

---
 debian/rules | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/debian/rules b/debian/rules
index bb4e2cbd..2ba67bc5 100755
--- a/debian/rules
+++ b/debian/rules
@@ -4,6 +4,9 @@ TARGET_BUILD	:= build-llvm
 TARGET_BUILD_STAGE2    := $(TARGET_BUILD)/tools/clang/stage2-bins
 DEB_INST		:= $(CURDIR)/debian/tmp/
 
+# Disable to move the previous method
+BUILD_METHOD := stage2
+
 GXX_VERSIONED_PACKAGE    := $(shell dpkg-query -W -f '$${Depends}' g++ | grep -o 'g++-[0-9][0-9.]*' | tail -n1 )
 GXX_VERSIONED_EXECUTABLE := $(shell dpkg -L $(GXX_VERSIONED_PACKAGE) | grep '/usr/bin/g++-[0-9][0-9.]*' | xargs ls -d | tail -n1 )
 GCC_VERSION              := $(subst /usr/bin/g++-,,$(GXX_VERSIONED_EXECUTABLE))
@@ -361,12 +364,13 @@ VERBOSE=VERBOSE=1
 #VERBOSE=-v
 
 debian-full-build:
-	$(PRE_PROCESS) make $(NJOBS) -C $(TARGET_BUILD) $(VERBOSE) CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)" REQUIRES_RTTI=1 DEBUGMAKE=1 stage2
-
+	$(PRE_PROCESS) make $(NJOBS) -C $(TARGET_BUILD) $(VERBOSE) CXXFLAGS="$(CXXFLAGS_EXTRA)"  LDFLAGS="$(LDFLAGS_EXTRA)" REQUIRES_RTTI=1 DEBUGMAKE=1 $(BUILD_METHOD)
 
 # Check the stage 2 build worked
+	if test "$(BUILD_METHOD)" = "stage2"; then \
 	if ! readelf --string-dump .comment  $(TARGET_BUILD_STAGE2)/bin/clang 2>&1|grep -q "clang version"; then \
 		echo "clang hasn't been built using clang. Bye bye. Check that the stage2 build has been done."; \
+	fi; \
 	fi
 
 	touch $@
@@ -495,7 +499,11 @@ override_dh_auto_install:
 	# Clean up temporary files to make sure the install works
 	rm -rf $(find $(TARGET_BUILD) -wholename '*CMakeFiles*' -not -name CMakeLists.txt -a -name "*.dir" -type d)
 	# install/fast enables a make install without recompiling temporary files
-	$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) stage2-install DESTDIR=$(DEB_INST)/
+	if test "$(BUILD_METHOD)" = "stage2"; then \
+		$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) stage2-install DESTDIR=$(DEB_INST)/; \
+	else \
+		$(MAKE) -C $(TARGET_BUILD) $(VERBOSE) install DESTDIR=$(DEB_INST)/; \
+	fi
 	# Not used on Linux.
 	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/argdumper
 	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/share/clang/clang-format-bbedit.applescript

From 93e8db6af012458325663bb222a0468d7de075c6 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Tue, 13 Nov 2018 12:06:46 +0100
Subject: [PATCH 04/23] working on 7.0.1 now

---
 debian/orig-tar.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/orig-tar.sh b/debian/orig-tar.sh
index 0e2dcf3e..fa726547 100755
--- a/debian/orig-tar.sh
+++ b/debian/orig-tar.sh
@@ -20,7 +20,7 @@ set -e
 
 SVN_BASE_URL=http://llvm.org/svn/llvm-project/
 MAJOR_VERSION=7
-CURRENT_VERSION=7 # Should be changed to 3.5.1 later
+CURRENT_VERSION=7.0.1 # Should be changed to 3.5.1 later
 
 if test -n "$1"; then
 # http://llvm.org/svn/llvm-project/{cfe,llvm,compiler-rt,...}/branches/google/stable/

From e563ce161d65d151d463c1e647c127386f9a92c8 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Wed, 14 Nov 2018 11:51:04 +0100
Subject: [PATCH 05/23] Fix the misscompilation issue causing rustc to crash
 (Closes: #913271) Might cause some ABI issues but no real good solution. See
 https://bugs.llvm.org/show_bug.cgi?id=39427

---
 debian/changelog                        |  3 +++
 debian/patches/pr39427-misscompile.diff | 29 +++++++++++++++++++++++++
 debian/patches/series                   |  1 +
 3 files changed, 33 insertions(+)
 create mode 100644 debian/patches/pr39427-misscompile.diff

diff --git a/debian/changelog b/debian/changelog
index db86131b..26d86aaf 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,9 @@ llvm-toolchain-7 (1:7.0.1~+rc2-3) unstable; urgency=medium
   * Try to integrate a pach to make pch reproducible
     Thanks to Rebecca Palmer for the patch
     (Closes: #877359)
+  * Fix the misscompilation issue causing rustc to crash (Closes: #913271)
+    Might cause some ABI issues but no real good solution.
+    See https://bugs.llvm.org/show_bug.cgi?id=39427
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Thu, 08 Nov 2018 20:50:39 +0100
 
diff --git a/debian/patches/pr39427-misscompile.diff b/debian/patches/pr39427-misscompile.diff
new file mode 100644
index 00000000..797e02b1
--- /dev/null
+++ b/debian/patches/pr39427-misscompile.diff
@@ -0,0 +1,29 @@
+Index: llvm-toolchain-7-7/include/llvm/ADT/Optional.h
+===================================================================
+--- llvm-toolchain-7-7.orig/include/llvm/ADT/Optional.h
++++ llvm-toolchain-7-7/include/llvm/ADT/Optional.h
+@@ -108,24 +108,6 @@ template <typename T, bool IsPodLike> st
+   }
+ };
+ 
+-#if !defined(__GNUC__) || defined(__clang__) // GCC up to GCC7 miscompiles this.
+-/// Storage for trivially copyable types only.
+-template <typename T> struct OptionalStorage<T, true> {
+-  AlignedCharArrayUnion<T> storage;
+-  bool hasVal = false;
+-
+-  OptionalStorage() = default;
+-
+-  OptionalStorage(const T &y) : hasVal(true) { new (storage.buffer) T(y); }
+-  OptionalStorage &operator=(const T &y) {
+-    *reinterpret_cast<T *>(storage.buffer) = y;
+-    hasVal = true;
+-    return *this;
+-  }
+-
+-  void reset() { hasVal = false; }
+-};
+-#endif
+ } // namespace optional_detail
+ 
+ template <typename T> class Optional {
diff --git a/debian/patches/series b/debian/patches/series
index fcce361e..b848aae0 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -88,3 +88,4 @@ remove-apple-clang-manpage.diff
 mips-rdhwr.diff
 clang-arm-default-vfp3-on-armv7a.patch
 reproducible-pch.diff
+pr39427-misscompile.diff

From 5e7c1dfabd3b1341d7c39d738941ce20e06cdd66 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Thu, 15 Nov 2018 14:16:02 +0100
Subject: [PATCH 06/23] add one more check

---
 debian/qualify-clang.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index db8724b8..6c6ee3ff 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -22,6 +22,10 @@ if test ! -f /usr/bin/llvm-config-$VERSION; then
     echo "Install llvm-$VERSION & llvm-$VERSION-dev"
     exit 1
 fi
+if test ! -f /usr/lib/llvm-$VERSION/lib/libLLVM-$VERSION.so; then
+    echo "Install llvm-$VERSION-dev"
+    exit 1
+fi
 llvm-config-$VERSION --link-shared --libs &> /dev/null
 
 echo '#include <stdlib.h>

From d6f8ecf3e0aa94386406a2c9cc5ff374301e496f Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Thu, 15 Nov 2018 14:16:18 +0100
Subject: [PATCH 07/23] remote temp files

---
 debian/qualify-clang.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index 6c6ee3ff..8de254d2 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -186,7 +186,7 @@ clang-$VERSION -fuse-ld=gold -shared -o libfoo.so bar.o
 # Still failing, commenting
 # clang-$VERSION -fuse-ld=gold -o y x.o libfoo.so -Wl,-R,.
 
-rm -f x.c bar.c
+rm -f x.c bar.c libfoo.so bar.o y x.o
 
 
 # test thinlto

From d3d41b810378caa466181d3f1a1abe93b2a46703 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Thu, 15 Nov 2018 14:16:27 +0100
Subject: [PATCH 08/23] Add example:
 https://bugs.llvm.org/show_bug.cgi?id=39427
 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913271

---
 debian/qualify-clang.sh | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index 8de254d2..2ba570f0 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -312,6 +312,50 @@ echo 'int main() {
 ' > foo.c
 clang-$VERSION -g -o bar foo.c
 
+# ABI issue between gcc & clang
+# https://bugs.llvm.org/show_bug.cgi?id=39427
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913271
+echo '
+#include <llvm/ADT/ArrayRef.h>
+#include <llvm/ADT/Optional.h>
+namespace llvm { class Constant{}; class Type; class Value; }
+extern llvm::Constant* bar (llvm::Type*, llvm::Constant*, llvm::ArrayRef<llvm::Value*>, bool, llvm::Optional<unsigned> o, llvm::Type*);
+#ifdef PART2
+llvm::Constant* bar (llvm::Type*, llvm::Constant*, llvm::ArrayRef<llvm::Value*>, bool, llvm::Optional<unsigned> o, llvm::Type*)
+{
+   return o.hasValue()?static_cast<llvm::Constant*>(nullptr)+1:nullptr;
+}
+#endif
+#ifndef PART2
+static llvm::Constant* doConstantRef(llvm::Type* type, llvm::Constant* var, llvm::ArrayRef<llvm::Value*> steps)
+{
+   llvm::Optional<unsigned> inRangeIndex;
+   return bar(type, var, steps, false, inRangeIndex, nullptr);
+}
+bool foo()
+{
+   llvm::Constant* var = nullptr;
+   llvm::Value* zero = nullptr;
+   llvm::Value* indexes[2] = {zero, zero};
+   llvm::ArrayRef<llvm::Value*> steps(indexes, 2);
+   auto result = doConstantRef(nullptr, var, steps);
+   return result;
+}
+int main()
+{
+   return foo();
+}
+#endif
+' > foo.cpp
+FLAGS="-I/usr/lib/llvm-$VERSION/include -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wdelete-non-virtual-dtor -Wno-comment -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -ffunction-sections -fdata-sections -O2 -DNDEBUG  -fno-exceptions -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
+
+clang++-$VERSION -c -o part1.o foo.cpp $FLAGS
+if test -f /usr/bin/g++; then
+    g++ -c -o part2.o -DPART2 foo.cpp $FLAGS
+    clang++-$VERSION -o foo part1.o part2.o $FLAGS
+    ./foo || true
+fi
+rm part1.o part2.o
 
 if test ! -f /usr/lib/llvm-$VERSION/lib/libomp.so; then
     echo "Install libomp-$VERSION-dev";

From 4625379dd476076bd68208d6b991b358d65fe85d Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 10:32:21 +0100
Subject: [PATCH 09/23] when the lld manpage have been moved,  move it back

---
 debian/rules | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/debian/rules b/debian/rules
index 2ba67bc5..a930ce9c 100755
--- a/debian/rules
+++ b/debian/rules
@@ -808,5 +808,8 @@ override_dh_auto_clean:
 	rm -f $(CURDIR)/clang/tools/clang-format/clang-format-diff-$(LLVM_VERSION)
 	rm -f $(CURDIR)/clang/tools/clang-format/clang-format-$(LLVM_VERSION).py
 	rm -rf libcxx/build libcxxabi/build
+	if test -f lld/docs/ld.lld-$(LLVM_VERSION).1; then \
+		mv lld/docs/ld.lld-$(LLVM_VERSION).1 lld/docs/ld.lld.1; \
+	fi
 
 .PHONY: override_dh_strip preconfigure debian-full-build debian-libfuzzer-build debian-libcxx-build debian-libcxxabi-build

From e1473e66f34fbf644c322cade0030753661ddb3d Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 12:44:27 +0100
Subject: [PATCH 10/23] doesn't segfault anymore, enabling the test

---
 debian/qualify-clang.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index a6f4e13e..faea3118 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -373,7 +373,7 @@ clang++-$VERSION -c -o part1.o foo.cpp $FLAGS
 if test -f /usr/bin/g++; then
     g++ -c -o part2.o -DPART2 foo.cpp $FLAGS
     clang++-$VERSION -o foo part1.o part2.o $FLAGS
-    ./foo || true
+    ./foo
 fi
 rm part1.o part2.o
 

From 34a2a44a1997b399646a5e5d8451f2588759a218 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 12:45:18 +0100
Subject: [PATCH 11/23] use the versioned clang

---
 debian/qualify-clang.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index faea3118..d2d61d13 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -103,7 +103,7 @@ int main() {
 
 g++ -c foo.cc && g++ foo.o bar.cc && ./a.out  > /dev/null || true
 clang++-$VERSION -c foo.cc && clang++-$VERSION foo.o bar.cc && ./a.out  > /dev/null
-g++ -c foo.cc && clang++ foo.o bar.cc && ./a.out  > /dev/null || true
+g++ -c foo.cc && clang++-$VERSION foo.o bar.cc && ./a.out  > /dev/null || true
 clang++-$VERSION -c foo.cc -fPIC && g++ foo.o bar.cc && ./a.out > /dev/null || true
 
 # bug 827866

From 163175ca1d2464b1e6f9e5616a46356386575d81 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 13:04:32 +0100
Subject: [PATCH 12/23] prepare a news about the bootstrap stage2 phase

---
 debian/NEWS | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/debian/NEWS b/debian/NEWS
index 087e0b3d..edd628b7 100644
--- a/debian/NEWS
+++ b/debian/NEWS
@@ -1,3 +1,12 @@
+llvm-toolchain-7 (1:7.0.1-1) unstable; urgency=medium
+
+  * llvm-toolchain packages are built using clang itself (stage2)
+    - stage1 = build clang with gcc
+    - stage2 = clang building itself
+    This could lead to some unexpected (but rare) ABI issues.
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Fri, 16 Nov 2018 13:00:39 +0100
+
 llvm-toolchain-7 (1:7-1) unstable; urgency=medium
 
   * From version 7, llvm-toolchain also provides libc++, libc++abi

From 3830a1354e692d700951c40b27f6aaa4c3539898 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 22:45:00 +0100
Subject: [PATCH 13/23] update the list of symbol for armhf

---
 debian/libomp5-X.Y.symbols.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/libomp5-X.Y.symbols.in b/debian/libomp5-X.Y.symbols.in
index 8590dc96..8111d2f0 100644
--- a/debian/libomp5-X.Y.symbols.in
+++ b/debian/libomp5-X.Y.symbols.in
@@ -862,7 +862,7 @@ libomp.so.5 libomp5 #MINVER#
  kmp_get_stacksize_s_@VERSION 0.20130412
  kmp_malloc@VERSION 0.20130412
  kmp_malloc_@VERSION 0.20130412
- (arch=!mips64el)kmp_mutex_impl_info@VERSION 7
+ (arch=!armhf !mips64el)kmp_mutex_impl_info@VERSION 7
  kmp_realloc@VERSION 0.20130412
  kmp_realloc_@VERSION 0.20130412
  kmp_set_affinity@VERSION 0.20130412

From af56187b7d04d718f3f2229691885b102bb026a5 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 22:45:51 +0100
Subject: [PATCH 14/23] workaround the build issues on armhf

---
 debian/rules | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index a930ce9c..b8bdb470 100755
--- a/debian/rules
+++ b/debian/rules
@@ -87,6 +87,12 @@ ifneq (,$(findstring $(DEB_HOST_ARCH),armel))
   CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=arm-linux-gnueabi
 endif
 
+
+ifneq (,$(findstring $(DEB_HOST_ARCH),armhf))
+# avoid an issue with openmp on armhf
+  CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=armv7l-unknown-linux-gnueabihf
+endif
+
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' g++-$(GCC_VERSION)) ge 4.8-20121128-1~ ; echo $$?),0)
 	control_vars = '-Vdep:devlibs=libstdc++-$(GCC_VERSION)-dev, libgcc-$(GCC_VERSION)-dev' \
 		'-Vdep:devlibs-objc=libobjc-$(GCC_VERSION)-dev'
@@ -663,7 +669,9 @@ override_dh_shlibdeps:
 	dh_shlibdeps -l$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/ -Xlibclang_rt.asan -Xlibclang_rt.asan -Xlibclang_rt.asan-*.so -Xlibclang_rt.asan-*.so
 
 override_dh_installman:
-	mv lld/docs/ld.lld.1 lld/docs/ld.lld-$(LLVM_VERSION).1
+	if test -f lld/docs/ld.lld.1; then \
+	mv lld/docs/ld.lld.1 lld/docs/ld.lld-$(LLVM_VERSION).1; \
+	fi
 	dh_installman
 # Make sure that lli manpage is only in llvm-3.2-runtime (See #697117)
 	rm -f $(CURDIR)/debian/llvm-$(LLVM_VERSION)/usr/share/man/man1/lli*

From 250438ab06b43e8330be33192d753c0b3024ff19 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Fri, 16 Nov 2018 22:46:35 +0100
Subject: [PATCH 15/23] Workaround the build issues on armhf Thanks to Adrian
 Bunk for the idea

---
 debian/changelog | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index 26d86aaf..e6f1bd41 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+llvm-toolchain-7 (1:7.0.1~+rc2-4) unstable; urgency=medium
+
+  * Workaround the build issues on armhf
+    Thanks to Adrian Bunk for the idea
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Fri, 16 Nov 2018 22:46:29 +0100
+
 llvm-toolchain-7 (1:7.0.1~+rc2-3) unstable; urgency=medium
 
   * Disable gold for sparc* (Closes: #913260)

From 63883db0f62b5d3042e185dd87bfce328a11b64e Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Sat, 17 Nov 2018 09:22:22 +0100
Subject: [PATCH 16/23] Remove useless symlink /usr/include/c++ ->
 ../lib/llvm-7/include/c++ (Closes: #913400)

---
 debian/changelog               | 2 ++
 debian/libc++-X.Y-dev.links.in | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/debian/changelog b/debian/changelog
index e6f1bd41..dc83a6dd 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,8 @@ llvm-toolchain-7 (1:7.0.1~+rc2-4) unstable; urgency=medium
 
   * Workaround the build issues on armhf
     Thanks to Adrian Bunk for the idea
+  * Remove useless symlink /usr/include/c++ -> ../lib/llvm-7/include/c++
+    (Closes: #913400)
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Fri, 16 Nov 2018 22:46:29 +0100
 
diff --git a/debian/libc++-X.Y-dev.links.in b/debian/libc++-X.Y-dev.links.in
index 4fa1b52e..73efe8f5 100644
--- a/debian/libc++-X.Y-dev.links.in
+++ b/debian/libc++-X.Y-dev.links.in
@@ -1,3 +1,2 @@
 usr/lib/llvm-@LLVM_VERSION@/lib/libc++.so /usr/lib/x86_64-linux-gnu/libc++.so
 usr/lib/llvm-@LLVM_VERSION@/lib/libc++.a /usr/lib/x86_64-linux-gnu/libc++.a
-usr/lib/llvm-@LLVM_VERSION@/include/c++ /usr/include/c++

From 3c22b2707eb890009a274e5b9f7b000f893114b6 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 18 Nov 2018 23:48:29 +0100
Subject: [PATCH 17/23] New patches to fix hurd build.

D54079-hurd-openmp.diff, D54338-hurd-libcxx-threads-build.diff,
D54339-hurd-libcxx-threads-detection.diff, D54378-hurd-triple.diff,
D54379-hurd-triple-clang.diff, D54677-hurd-path_max.diff,
hurd-cxx-paths.diff
---
 debian/changelog                              |   9 +
 debian/patches/D54079-hurd-openmp.diff        | 150 +++++++
 .../D54338-hurd-libcxx-threads-build.diff     |  24 +
 .../D54339-hurd-libcxx-threads-detection.diff |  18 +
 debian/patches/D54378-hurd-triple.diff        |  74 ++++
 debian/patches/D54379-hurd-triple-clang.diff  | 413 ++++++++++++++++++
 debian/patches/D54677-hurd-path_max.diff      |  64 +++
 debian/patches/hurd-cxx-paths.diff            | 281 ++++++++++++
 debian/patches/series                         |   9 +
 9 files changed, 1042 insertions(+)
 create mode 100644 debian/patches/D54079-hurd-openmp.diff
 create mode 100644 debian/patches/D54338-hurd-libcxx-threads-build.diff
 create mode 100644 debian/patches/D54339-hurd-libcxx-threads-detection.diff
 create mode 100644 debian/patches/D54378-hurd-triple.diff
 create mode 100644 debian/patches/D54379-hurd-triple-clang.diff
 create mode 100644 debian/patches/D54677-hurd-path_max.diff
 create mode 100644 debian/patches/hurd-cxx-paths.diff

diff --git a/debian/changelog b/debian/changelog
index dc83a6dd..8bcfc4c7 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+llvm-toolchain-7 (1:7.0.1~+rc2-5) UNRELEASED; urgency=medium
+
+  * D54079-hurd-openmp.diff, D54338-hurd-libcxx-threads-build.diff,
+    D54339-hurd-libcxx-threads-detection.diff, D54378-hurd-triple.diff,
+    D54379-hurd-triple-clang.diff, D54677-hurd-path_max.diff,
+    hurd-cxx-paths.diff: New patches to fix hurd build.
+
+ -- Samuel Thibault <sthibault@debian.org>  Sun, 18 Nov 2018 23:43:55 +0100
+
 llvm-toolchain-7 (1:7.0.1~+rc2-4) unstable; urgency=medium
 
   * Workaround the build issues on armhf
diff --git a/debian/patches/D54079-hurd-openmp.diff b/debian/patches/D54079-hurd-openmp.diff
new file mode 100644
index 00000000..aa1a16df
--- /dev/null
+++ b/debian/patches/D54079-hurd-openmp.diff
@@ -0,0 +1,150 @@
+r346310 | achurbanov | 2018-11-07 13:27:38 +0100 (Wed, 07 Nov 2018) | 6 lines
+
+Add Hurd support.
+
+Patch by samuel.thibault@ens-lyon.org
+
+Differential Revision: https://reviews.llvm.org/D54079
+
+Index: llvm/openmp/runtime/src/kmp.h
+===================================================================
+--- llvm/openmp/runtime/src/kmp.h.orig
++++ llvm/openmp/runtime/src/kmp.h
+@@ -1048,6 +1048,10 @@ extern kmp_uint64 __kmp_now_nsec();
+ /* TODO: tune for KMP_OS_NETBSD */
+ #define KMP_INIT_WAIT 1024U /* initial number of spin-tests   */
+ #define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
++#elif KMP_OS_HURD
++/* TODO: tune for KMP_OS_HURD */
++#define KMP_INIT_WAIT 1024U /* initial number of spin-tests   */
++#define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
+ #endif
+ 
+ #if KMP_ARCH_X86 || KMP_ARCH_X86_64
+Index: llvm/openmp/runtime/src/kmp_ftn_entry.h
+===================================================================
+--- llvm/openmp/runtime/src/kmp_ftn_entry.h.orig
++++ llvm/openmp/runtime/src/kmp_ftn_entry.h
+@@ -369,7 +369,7 @@ int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_
+ #else
+   int gtid;
+ 
+-#if KMP_OS_DARWIN || KMP_OS_FREEBSD || KMP_OS_NETBSD
++#if KMP_OS_DARWIN || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_HURD
+   gtid = __kmp_entry_gtid();
+ #elif KMP_OS_WINDOWS
+   if (!__kmp_init_parallel ||
+Index: llvm/openmp/runtime/src/kmp_platform.h
+===================================================================
+--- llvm/openmp/runtime/src/kmp_platform.h.orig
++++ llvm/openmp/runtime/src/kmp_platform.h
+@@ -22,6 +22,7 @@
+ #define KMP_OS_DARWIN 0
+ #define KMP_OS_WINDOWS 0
+ #define KMP_OS_CNK 0
++#define KMP_OS_HURD 0
+ #define KMP_OS_UNIX 0 /* disjunction of KMP_OS_LINUX, KMP_OS_DARWIN etc. */
+ 
+ #ifdef _WIN32
+@@ -59,13 +60,18 @@
+ #define KMP_OS_CNK 1
+ #endif
+ 
++#if (defined __GNU__)
++#undef KMP_OS_HURD
++#define KMP_OS_HURD 1
++#endif
++
+ #if (1 !=                                                                      \
+      KMP_OS_LINUX + KMP_OS_FREEBSD + KMP_OS_NETBSD + KMP_OS_DARWIN +           \
+-         KMP_OS_WINDOWS)
++         KMP_OS_WINDOWS + KMP_OS_HURD)
+ #error Unknown OS
+ #endif
+ 
+-#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_DARWIN
++#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_DARWIN || KMP_OS_HURD
+ #undef KMP_OS_UNIX
+ #define KMP_OS_UNIX 1
+ #endif
+Index: llvm/openmp/runtime/src/kmp_runtime.cpp
+===================================================================
+--- llvm/openmp/runtime/src/kmp_runtime.cpp.orig
++++ llvm/openmp/runtime/src/kmp_runtime.cpp
+@@ -7643,7 +7643,7 @@ __kmp_determine_reduction_method(
+ #if KMP_ARCH_X86_64 || KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 || KMP_ARCH_MIPS64
+ 
+ #if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_WINDOWS ||       \
+-    KMP_OS_DARWIN
++    KMP_OS_DARWIN || KMP_OS_HURD
+ 
+     int teamsize_cutoff = 4;
+ 
+@@ -7670,7 +7670,7 @@ __kmp_determine_reduction_method(
+ 
+ #elif KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_AARCH || KMP_ARCH_MIPS
+ 
+-#if KMP_OS_LINUX || KMP_OS_WINDOWS
++#if KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_HURD
+ 
+     // basic tuning
+ 
+Index: llvm/openmp/runtime/src/thirdparty/ittnotify/ittnotify_static.c
+===================================================================
+--- llvm/openmp/runtime/src/thirdparty/ittnotify/ittnotify_static.c.orig
++++ llvm/openmp/runtime/src/thirdparty/ittnotify/ittnotify_static.c
+@@ -70,6 +70,10 @@ static const char* ittnotify_lib_name =
+ #define ANDROID_ITTNOTIFY_DEFAULT_PATH  "/data/data/com.intel.vtune/intel/libittnotify.so"
+ #endif
+ 
++#ifndef PATH_MAX
++#define PATH_MAX 4096
++#endif
++
+ 
+ #ifndef LIB_VAR_NAME
+ #if ITT_ARCH==ITT_ARCH_IA32 || ITT_ARCH==ITT_ARCH_ARM || ITT_ARCH==ITT_ARCH_MIPS
+Index: llvm/openmp/runtime/src/z_Linux_util.cpp
+===================================================================
+--- llvm/openmp/runtime/src/z_Linux_util.cpp.orig
++++ llvm/openmp/runtime/src/z_Linux_util.cpp
+@@ -444,8 +444,7 @@ void __kmp_terminate_thread(int gtid) {
+    determined exactly, FALSE if incremental refinement is necessary. */
+ static kmp_int32 __kmp_set_stack_info(int gtid, kmp_info_t *th) {
+   int stack_data;
+-#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
+-  /* Linux* OS only -- no pthread_getattr_np support on OS X* */
++#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_HURD
+   pthread_attr_t attr;
+   int status;
+   size_t size = 0;
+@@ -497,7 +496,7 @@ static void *__kmp_launch_worker(void *t
+   sigset_t new_set, old_set;
+ #endif /* KMP_BLOCK_SIGNALS */
+   void *exit_val;
+-#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
++#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_HURD
+   void *volatile padding = 0;
+ #endif
+   int gtid;
+@@ -1765,7 +1764,7 @@ static int __kmp_get_xproc(void) {
+ 
+   int r = 0;
+ 
+-#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
++#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_HURD
+ 
+   r = sysconf(_SC_NPROCESSORS_ONLN);
+ 
+@@ -1953,9 +1952,9 @@ int __kmp_is_address_mapped(void *addr)
+   int found = 0;
+   int rc;
+ 
+-#if KMP_OS_LINUX || KMP_OS_FREEBSD
++#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_HURD
+ 
+-  /* On Linux* OS, read the /proc/<pid>/maps pseudo-file to get all the address
++  /* On GNUish OSes, read the /proc/<pid>/maps pseudo-file to get all the address
+      ranges mapped into the address space. */
+ 
+   char *name = __kmp_str_format("/proc/%d/maps", getpid());
diff --git a/debian/patches/D54338-hurd-libcxx-threads-build.diff b/debian/patches/D54338-hurd-libcxx-threads-build.diff
new file mode 100644
index 00000000..55e5472e
--- /dev/null
+++ b/debian/patches/D54338-hurd-libcxx-threads-build.diff
@@ -0,0 +1,24 @@
+r346763 | ldionne | 2018-11-13 18:00:04 +0100 (Tue, 13 Nov 2018) | 5 lines
+
+[libcxx] GNU/Hurd uses BSD-based interfaces, but does not (and won't) provide <sys/sysctl.h>
+
+Reviewed as https://reviews.llvm.org/D54338.
+
+Thanks to sthibaul for the patch.
+
+Index: llvm-toolchain-7-7/libcxx/src/thread.cpp
+===================================================================
+--- llvm-toolchain-7-7.orig/libcxx/src/thread.cpp
++++ llvm-toolchain-7-7/libcxx/src/thread.cpp
+@@ -19,9 +19,9 @@
+ 
+ #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+ # include <sys/param.h>
+-# if defined(BSD)
++# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__APPLE__)
+ #   include <sys/sysctl.h>
+-# endif // defined(BSD)
++# endif
+ #endif // defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+ 
+ #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__CloudABI__) || defined(__Fuchsia__)
diff --git a/debian/patches/D54339-hurd-libcxx-threads-detection.diff b/debian/patches/D54339-hurd-libcxx-threads-detection.diff
new file mode 100644
index 00000000..dac013bd
--- /dev/null
+++ b/debian/patches/D54339-hurd-libcxx-threads-detection.diff
@@ -0,0 +1,18 @@
+Fix threads detection on GNU/Hurd
+
+GNU/Hurd provides standard Posix threads
+
+https://reviews.llvm.org/D54339
+
+Index: llvm-toolchain-7-7/libcxx/include/__config
+===================================================================
+--- llvm-toolchain-7-7.orig/libcxx/include/__config
++++ llvm-toolchain-7-7/libcxx/include/__config
+@@ -1110,6 +1110,7 @@ _LIBCPP_FUNC_VIS extern "C" void __sanit
+       defined(__Fuchsia__) || \
+       defined(__NetBSD__) || \
+       defined(__linux__) || \
++      defined(__GNU__) || \
+       defined(__APPLE__) || \
+       defined(__CloudABI__) || \
+       defined(__sun__) || \
diff --git a/debian/patches/D54378-hurd-triple.diff b/debian/patches/D54378-hurd-triple.diff
new file mode 100644
index 00000000..2f57a2a1
--- /dev/null
+++ b/debian/patches/D54378-hurd-triple.diff
@@ -0,0 +1,74 @@
+Add Hurd triplet to LLVMSupport
+
+This introduces GNU Hurd as a new target OS.
+
+https://reviews.llvm.org/D54378
+
+Index: llvm-toolchain-7-7.0.1~+rc2/include/llvm/ADT/Triple.h
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/include/llvm/ADT/Triple.h
++++ llvm-toolchain-7-7.0.1~+rc2/include/llvm/ADT/Triple.h
+@@ -182,7 +182,8 @@ public:
+     Mesa3D,
+     Contiki,
+     AMDPAL,     // AMD PAL Runtime
+-    LastOSType = AMDPAL
++    Hurd,       // GNU/Hurd
++    LastOSType = Hurd
+   };
+   enum EnvironmentType {
+     UnknownEnvironment,
+@@ -578,9 +579,15 @@ public:
+     return getOS() == Triple::KFreeBSD;
+   }
+ 
++  /// Tests whether the OS is Hurd.
++  bool isOSHurd() const {
++    return getOS() == Triple::Hurd;
++  }
++
+   /// Tests whether the OS uses glibc.
+   bool isOSGlibc() const {
+-    return (getOS() == Triple::Linux || getOS() == Triple::KFreeBSD) &&
++    return (getOS() == Triple::Linux || getOS() == Triple::KFreeBSD ||
++            getOS() == Triple::Hurd) &&
+            !isAndroid();
+   }
+ 
+Index: llvm-toolchain-7-7.0.1~+rc2/lib/Support/Triple.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/lib/Support/Triple.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/lib/Support/Triple.cpp
+@@ -209,6 +209,7 @@ StringRef Triple::getOSTypeName(OSType K
+   case Mesa3D: return "mesa3d";
+   case Contiki: return "contiki";
+   case AMDPAL: return "amdpal";
++  case Hurd: return "hurd";
+   }
+ 
+   llvm_unreachable("Invalid OSType");
+@@ -502,6 +503,7 @@ static Triple::OSType parseOS(StringRef
+     .StartsWith("mesa3d", Triple::Mesa3D)
+     .StartsWith("contiki", Triple::Contiki)
+     .StartsWith("amdpal", Triple::AMDPAL)
++    .StartsWith("hurd", Triple::Hurd)
+     .Default(Triple::UnknownOS);
+ }
+ 
+Index: llvm/unittests/ADT/TripleTest.cpp
+===================================================================
+--- llvm/unittests/ADT/TripleTest.cpp	(révision 346226)
++++ llvm/unittests/ADT/TripleTest.cpp	(copie de travail)
+@@ -93,6 +93,12 @@
+   EXPECT_EQ(Triple::Contiki, T.getOS());
+   EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
+ 
++  T = Triple("i386-pc-hurd-gnu");
++  EXPECT_EQ(Triple::x86, T.getArch());
++  EXPECT_EQ(Triple::PC, T.getVendor());
++  EXPECT_EQ(Triple::Hurd, T.getOS());
++  EXPECT_EQ(Triple::GNU, T.getEnvironment());
++
+   T = Triple("x86_64-pc-linux-gnu");
+   EXPECT_EQ(Triple::x86_64, T.getArch());
+   EXPECT_EQ(Triple::PC, T.getVendor());
diff --git a/debian/patches/D54379-hurd-triple-clang.diff b/debian/patches/D54379-hurd-triple-clang.diff
new file mode 100644
index 00000000..c55fc548
--- /dev/null
+++ b/debian/patches/D54379-hurd-triple-clang.diff
@@ -0,0 +1,413 @@
+Add Hurd toolchain support to Clang
+
+https://reviews.llvm.org/D54379
+
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Basic/Targets/OSTargets.h
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Basic/Targets/OSTargets.h
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Basic/Targets/OSTargets.h
+@@ -270,6 +270,29 @@ public:
+   }
+ };
+ 
++// Hurd target
++template <typename Target>
++class LLVM_LIBRARY_VISIBILITY HurdTargetInfo : public OSTargetInfo<Target> {
++protected:
++  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
++                    MacroBuilder &Builder) const override {
++    // Linux defines; list based off of gcc output
++    DefineStd(Builder, "unix", Opts);
++    Builder.defineMacro("__GNU__");
++    Builder.defineMacro("__gnu_hurd__");
++    Builder.defineMacro("__MACH__");
++    Builder.defineMacro("__GLIBC__");
++    Builder.defineMacro("__ELF__");
++    if (Opts.POSIXThreads)
++      Builder.defineMacro("_REENTRANT");
++    if (Opts.CPlusPlus)
++      Builder.defineMacro("_GNU_SOURCE");
++  }
++public:
++  HurdTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
++      : OSTargetInfo<Target>(Triple, Opts) {}
++};
++
+ // Minix Target
+ template <typename Target>
+ class LLVM_LIBRARY_VISIBILITY MinixTargetInfo : public OSTargetInfo<Target> {
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Basic/Targets.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Basic/Targets.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Basic/Targets.cpp
+@@ -495,6 +495,8 @@ TargetInfo *AllocateTarget(const llvm::T
+       return new NaClTargetInfo<X86_32TargetInfo>(Triple, Opts);
+     case llvm::Triple::ELFIAMCU:
+       return new MCUX86_32TargetInfo(Triple, Opts);
++    case llvm::Triple::Hurd:
++      return new HurdTargetInfo<X86_32TargetInfo>(Triple, Opts);
+     default:
+       return new X86_32TargetInfo(Triple, Opts);
+     }
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/CMakeLists.txt
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/CMakeLists.txt
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/CMakeLists.txt
+@@ -47,6 +47,7 @@ add_clang_library(clangDriver
+   ToolChains/Haiku.cpp
+   ToolChains/HIP.cpp
+   ToolChains/Hexagon.cpp
++  ToolChains/Hurd.cpp
+   ToolChains/Linux.cpp
+   ToolChains/MipsLinux.cpp
+   ToolChains/MinGW.cpp
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/Driver.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/Driver.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/Driver.cpp
+@@ -26,6 +26,7 @@
+ #include "ToolChains/HIP.h"
+ #include "ToolChains/Haiku.h"
+ #include "ToolChains/Hexagon.h"
++#include "ToolChains/Hurd.h"
+ #include "ToolChains/Lanai.h"
+ #include "ToolChains/Linux.h"
+ #include "ToolChains/MSVC.h"
+@@ -399,6 +400,13 @@ static llvm::Triple computeTargetTriple(
+ 
+   llvm::Triple Target(llvm::Triple::normalize(TargetTriple));
+ 
++  // GNU/Hurd's triple should have been -hurd-gnu*, but was historically made
++  // -gnu* only, and we can not change this, so we have to detect that case as
++  // being the Hurd OS.
++  if (TargetTriple.find("-unknown-gnu") != StringRef::npos ||
++      TargetTriple.find("-pc-gnu") != StringRef::npos)
++    Target.setOSName("hurd");
++
+   // Handle Apple-specific options available here.
+   if (Target.isOSBinFormatMachO()) {
+     // If an explicit Darwin arch name is given, that trumps all.
+@@ -4374,6 +4382,9 @@ const ToolChain &Driver::getToolChain(co
+     case llvm::Triple::Contiki:
+       TC = llvm::make_unique<toolchains::Contiki>(*this, Target, Args);
+       break;
++    case llvm::Triple::Hurd:
++      TC = llvm::make_unique<toolchains::Hurd>(*this, Target, Args);
++      break;
+     default:
+       // Of these targets, Hexagon is the only one that might have
+       // an OS of Linux, in which case it got handled above already.
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Clang.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Clang.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Clang.cpp
+@@ -528,7 +528,7 @@ static bool useFramePointerForTargetByDe
+     return !areOptimizationsEnabled(Args);
+   }
+ 
+-  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
++  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI || Triple.isOSHurd()) {
+     switch (Triple.getArch()) {
+     // Don't use a frame pointer on linux if optimizing for certain targets.
+     case llvm::Triple::mips64:
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Gnu.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Gnu.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Gnu.cpp
+@@ -1846,7 +1846,9 @@ void Generic_GCC::GCCInstallationDetecto
+       "i686-linux-gnu",       "i686-pc-linux-gnu",     "i486-linux-gnu",
+       "i386-linux-gnu",       "i386-redhat-linux6E",   "i686-redhat-linux",
+       "i586-redhat-linux",    "i386-redhat-linux",     "i586-suse-linux",
+-      "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu"};
++      "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu",
++      "i386-gnu",             "i486-gnu",              "i586-gnu",
++      "i686-gnu"};
+ 
+   static const char *const MIPSLibDirs[] = {"/lib"};
+   static const char *const MIPSTriples[] = {"mips-linux-gnu", "mips-mti-linux",
+@@ -2210,6 +2212,9 @@ void Generic_GCC::GCCInstallationDetecto
+       // triple.
+       {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
+        (TargetArch == llvm::Triple::x86 &&
++        TargetTriple.getOS() != llvm::Triple::Solaris)},
++      {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..",
++       (TargetArch == llvm::Triple::x86 &&
+         TargetTriple.getOS() != llvm::Triple::Solaris)}};
+ 
+   for (auto &Suffix : Suffixes) {
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+===================================================================
+--- /dev/null
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+@@ -0,0 +1,191 @@
++//===--- Hurd.cpp - Hurd ToolChain Implementations --------*- C++ -*-===//
++//
++//                     The LLVM Compiler Infrastructure
++//
++// This file is distributed under the University of Illinois Open Source
++// License. See LICENSE.TXT for details.
++//
++//===----------------------------------------------------------------------===//
++
++#include "Hurd.h"
++#include "CommonArgs.h"
++#include "clang/Basic/VirtualFileSystem.h"
++#include "clang/Config/config.h"
++#include "clang/Driver/Driver.h"
++#include "clang/Driver/Options.h"
++#include "llvm/Support/Path.h"
++
++using namespace clang::driver;
++using namespace clang::driver::toolchains;
++using namespace clang;
++using namespace llvm::opt;
++
++using tools::addPathIfExists;
++
++/// Get our best guess at the multiarch triple for a target.
++///
++/// Debian-based systems are starting to use a multiarch setup where they use
++/// a target-triple directory in the library and header search paths.
++/// Unfortunately, this triple does not align with the vanilla target triple,
++/// so we provide a rough mapping here.
++static std::string getMultiarchTriple(const Driver &D,
++                                      const llvm::Triple &TargetTriple,
++                                      StringRef SysRoot) {
++  // For most architectures, just use whatever we have rather than trying to be
++  // clever.
++  switch (TargetTriple.getArch()) {
++  default:
++    break;
++
++  // We use the existence of '/lib/<triple>' as a directory to detect some
++  // common hurd triples that don't quite match the Clang triple for both
++  // 32-bit and 64-bit targets. Multiarch fixes its install triples to these
++  // regardless of what the actual target triple is.
++  case llvm::Triple::x86:
++    if (D.getVFS().exists(SysRoot + "/lib/i386-gnu"))
++      return "i386-gnu";
++    break;
++  }
++
++  return TargetTriple.str();
++}
++
++static StringRef getOSLibDir(const llvm::Triple &Triple, const ArgList &Args) {
++  // It happens that only x86 and PPC use the 'lib32' variant of oslibdir, and
++  // using that variant while targeting other architectures causes problems
++  // because the libraries are laid out in shared system roots that can't cope
++  // with a 'lib32' library search path being considered. So we only enable
++  // them when we know we may need it.
++  //
++  // FIXME: This is a bit of a hack. We should really unify this code for
++  // reasoning about oslibdir spellings with the lib dir spellings in the
++  // GCCInstallationDetector, but that is a more significant refactoring.
++
++  if (Triple.getArch() == llvm::Triple::x86)
++    return "lib32";
++
++  return Triple.isArch32Bit() ? "lib" : "lib64";
++}
++
++Hurd::Hurd(const Driver &D, const llvm::Triple &Triple,
++                 const ArgList &Args)
++    : Generic_ELF(D, Triple, Args) {
++  std::string SysRoot = computeSysRoot();
++  path_list &Paths = getFilePaths();
++
++  const std::string OSLibDir = getOSLibDir(Triple, Args);
++  const std::string MultiarchTriple = getMultiarchTriple(D, Triple, SysRoot);
++
++  // Similar to the logic for GCC above, if we currently running Clang inside
++  // of the requested system root, add its parent library paths to
++  // those searched.
++  // FIXME: It's not clear whether we should use the driver's installed
++  // directory ('Dir' below) or the ResourceDir.
++  if (StringRef(D.Dir).startswith(SysRoot)) {
++    addPathIfExists(D, D.Dir + "/../lib/" + MultiarchTriple, Paths);
++    addPathIfExists(D, D.Dir + "/../" + OSLibDir, Paths);
++  }
++
++  addPathIfExists(D, SysRoot + "/lib/" + MultiarchTriple, Paths);
++  addPathIfExists(D, SysRoot + "/lib/../" + OSLibDir, Paths);
++
++  addPathIfExists(D, SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
++  addPathIfExists(D, SysRoot + "/usr/lib/../" + OSLibDir, Paths);
++
++  // If we are currently running Clang inside of the requested system root, add
++  // its parent library path to those searched.
++  // FIXME: It's not clear whether we should use the driver's installed
++  // directory ('Dir' below) or the ResourceDir.
++  if (StringRef(D.Dir).startswith(SysRoot))
++    addPathIfExists(D, D.Dir + "/../lib", Paths);
++
++  addPathIfExists(D, SysRoot + "/lib", Paths);
++  addPathIfExists(D, SysRoot + "/usr/lib", Paths);
++}
++
++bool Hurd::HasNativeLLVMSupport() const { return true; }
++
++Tool *Hurd::buildLinker() const { return new tools::gnutools::Linker(*this); }
++
++Tool *Hurd::buildAssembler() const {
++  return new tools::gnutools::Assembler(*this);
++}
++
++std::string Hurd::computeSysRoot() const {
++  if (!getDriver().SysRoot.empty())
++    return getDriver().SysRoot;
++
++  return std::string();
++}
++
++std::string Hurd::getDynamicLinker(const ArgList &Args) const {
++  const llvm::Triple::ArchType Arch = getArch();
++
++  if (Arch == llvm::Triple::x86)
++    return "/lib/ld.so";
++
++  llvm_unreachable("unsupported architecture");
++}
++
++void Hurd::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
++                                     ArgStringList &CC1Args) const {
++  const Driver &D = getDriver();
++  std::string SysRoot = computeSysRoot();
++
++  if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
++    return;
++
++  if (!DriverArgs.hasArg(options::OPT_nostdlibinc))
++    addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");
++
++  if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
++    SmallString<128> P(D.ResourceDir);
++    llvm::sys::path::append(P, "include");
++    addSystemInclude(DriverArgs, CC1Args, P);
++  }
++
++  if (DriverArgs.hasArg(options::OPT_nostdlibinc))
++    return;
++
++  // Check for configure-time C include directories.
++  StringRef CIncludeDirs(C_INCLUDE_DIRS);
++  if (CIncludeDirs != "") {
++    SmallVector<StringRef, 5> dirs;
++    CIncludeDirs.split(dirs, ":");
++    for (StringRef dir : dirs) {
++      StringRef Prefix =
++          llvm::sys::path::is_absolute(dir) ? StringRef(SysRoot) : "";
++      addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
++    }
++    return;
++  }
++
++  // Lacking those, try to detect the correct set of system includes for the
++  // target triple.
++
++  const StringRef X86MultiarchIncludeDirs[] = {
++      "/usr/include/i386-gnu"};
++
++  ArrayRef<StringRef> MultiarchIncludeDirs;
++  switch (getTriple().getArch()) {
++  case llvm::Triple::x86:
++    MultiarchIncludeDirs = X86MultiarchIncludeDirs;
++    break;
++  default:
++    break;
++  }
++
++  for (StringRef Dir : MultiarchIncludeDirs) {
++    if (D.getVFS().exists(SysRoot + Dir)) {
++      addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + Dir);
++      break;
++    }
++  }
++
++  // Add an include of '/include' directly. This isn't provided by default by
++  // system GCCs, but is often used with cross-compiling GCCs, and harmless to
++  // add even when Clang is acting as-if it were a system compiler.
++  addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/include");
++
++  addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include");
++}
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
+===================================================================
+--- /dev/null
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
+@@ -0,0 +1,46 @@
++//===--- Hurd.h - Hurd ToolChain Implementations ----------*- C++ -*-===//
++//
++//                     The LLVM Compiler Infrastructure
++//
++// This file is distributed under the University of Illinois Open Source
++// License. See LICENSE.TXT for details.
++//
++//===----------------------------------------------------------------------===//
++
++#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_Hurd_H
++#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_Hurd_H
++
++#include "Gnu.h"
++#include "clang/Driver/ToolChain.h"
++
++namespace clang {
++namespace driver {
++namespace toolchains {
++
++class LLVM_LIBRARY_VISIBILITY Hurd : public Generic_ELF {
++public:
++  Hurd(const Driver &D, const llvm::Triple &Triple,
++          const llvm::opt::ArgList &Args);
++
++  bool HasNativeLLVMSupport() const override;
++
++  void
++  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
++                            llvm::opt::ArgStringList &CC1Args) const override;
++
++  virtual std::string computeSysRoot() const;
++
++  virtual std::string getDynamicLinker(const llvm::opt::ArgList &Args) const;
++
++  std::vector<std::string> ExtraOpts;
++
++protected:
++  Tool *buildAssembler() const override;
++  Tool *buildLinker() const override;
++};
++
++} // end namespace toolchains
++} // end namespace driver
++} // end namespace clang
++
++#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_Hurd_H
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Frontend/InitHeaderSearch.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Frontend/InitHeaderSearch.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Frontend/InitHeaderSearch.cpp
+@@ -260,6 +260,7 @@ void InitHeaderSearch::AddDefaultCInclud
+ 
+   switch (os) {
+   case llvm::Triple::Linux:
++  case llvm::Triple::Hurd:
+   case llvm::Triple::Solaris:
+     llvm_unreachable("Include management is handled in the driver.");
+ 
+@@ -412,6 +413,7 @@
+
+   switch (os) {
+   case llvm::Triple::Linux:
++  case llvm::Triple::Hurd:
+   case llvm::Triple::Solaris:
+     llvm_unreachable("Include management is handled in the driver.");
+     break;
+@@ -460,6 +462,7 @@
+     break; // Everything else continues to use this routine's logic.
+
+   case llvm::Triple::Linux:
++  case llvm::Triple::Hurd:
+   case llvm::Triple::Solaris:
+     return;
+
+ 
diff --git a/debian/patches/D54677-hurd-path_max.diff b/debian/patches/D54677-hurd-path_max.diff
new file mode 100644
index 00000000..12b09168
--- /dev/null
+++ b/debian/patches/D54677-hurd-path_max.diff
@@ -0,0 +1,64 @@
+[hurd] Fix unconditional use of PATH_MAX
+
+The GNU/Hurd system does not define an arbitrary PATH_MAX limitation, the POSIX 2001 realpath extension can be used instead, and the size of symlinks can be determined.
+
+https://reviews.llvm.org/D54677
+
+Index: llvm/libcxx/src/filesystem/operations.cpp
+===================================================================
+--- llvm/libcxx/src/filesystem/operations.cpp	(révision 347139)
++++ llvm/libcxx/src/filesystem/operations.cpp	(copie de travail)
+@@ -530,11 +530,20 @@
+   ErrorHandler<path> err("canonical", ec, &orig_p, &cwd);
+ 
+   path p = __do_absolute(orig_p, &cwd, ec);
++#if _POSIX_VERSION >= 200112 || defined(__GLIBC__)
++  char *buff;
++  if ((buff = ::realpath(p.c_str(), NULL)) == nullptr)
++    return err.report(capture_errno());
++  path ret = {buff};
++  free(buff);
++  return ret;
++#else
+   char buff[PATH_MAX + 1];
+   char* ret;
+   if ((ret = ::realpath(p.c_str(), buff)) == nullptr)
+     return err.report(capture_errno());
+   return {ret};
++#endif
+ }
+ 
+ void __copy(const path& from, const path& to, copy_options options,
+@@ -1076,16 +1085,27 @@
+ path __read_symlink(const path& p, error_code* ec) {
+   ErrorHandler<path> err("read_symlink", ec, &p);
+ 
+-  char buff[PATH_MAX + 1];
+-  error_code m_ec;
++  struct stat sb;
++  if (lstat(p.c_str(), &sb) == -1) {
++    return err.report(capture_errno());
++  }
++  size_t size = sb.st_size + 1;
++  char *buff = (char*) malloc(size);
++  if (buff == NULL) {
++    return err.report(capture_errno());
++  }
++
+   ::ssize_t ret;
+-  if ((ret = ::readlink(p.c_str(), buff, PATH_MAX)) == -1) {
++  if ((ret = ::readlink(p.c_str(), buff, size)) == -1) {
++    free(buff);
+     return err.report(capture_errno());
+   }
+-  _LIBCPP_ASSERT(ret <= PATH_MAX, "TODO");
++  _LIBCPP_ASSERT(ret < size, "TODO");
+   _LIBCPP_ASSERT(ret > 0, "TODO");
+   buff[ret] = 0;
+-  return {buff};
++  path res = {buff};
++  free(buff);
++  return res;
+ }
+ 
+ bool __remove(const path& p, error_code* ec) {
diff --git a/debian/patches/hurd-cxx-paths.diff b/debian/patches/hurd-cxx-paths.diff
new file mode 100644
index 00000000..316e9ee2
--- /dev/null
+++ b/debian/patches/hurd-cxx-paths.diff
@@ -0,0 +1,281 @@
+This should be factorized with Linux.cpp and the GNU/kFreeBSD case.
+
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Hurd.cpp
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+@@ -67,15 +67,102 @@ static StringRef getOSLibDir(const llvm:
+   return Triple.isArch32Bit() ? "lib" : "lib64";
+ }
+ 
++static void addMultilibsFilePaths(const Driver &D, const MultilibSet &Multilibs,
++                                  const Multilib &Multilib,
++                                  StringRef InstallPath,
++                                  ToolChain::path_list &Paths) {
++  if (const auto &PathsCallback = Multilibs.filePathsCallback())
++    for (const auto &Path : PathsCallback(Multilib))
++      addPathIfExists(D, InstallPath + Path, Paths);
++}
++
+ Hurd::Hurd(const Driver &D, const llvm::Triple &Triple,
+                  const ArgList &Args)
+     : Generic_ELF(D, Triple, Args) {
++  GCCInstallation.init(Triple, Args);
++  Multilibs = GCCInstallation.getMultilibs();
+   std::string SysRoot = computeSysRoot();
++
++  // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
++  // least) put various tools in a triple-prefixed directory off of the parent
++  // of the GCC installation. We use the GCC triple here to ensure that we end
++  // up with tools that support the same amount of cross compiling as the
++  // detected GCC installation. For example, if we find a GCC installation
++  // targeting x86_64, but it is a bi-arch GCC installation, it can also be
++  // used to target i386.
++  // FIXME: This seems unlikely to be Linux- or Hurd-specific.
++  ToolChain::path_list &PPaths = getProgramPaths();
++  PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
++                         GCCInstallation.getTriple().str() + "/bin")
++                       .str());
++
++#ifdef ENABLE_LINKER_BUILD_ID
++  ExtraOpts.push_back("--build-id");
++#endif
++
++  // The selection of paths to try here is designed to match the patterns which
++  // the GCC driver itself uses, as this is part of the GCC-compatible driver.
++  // This was determined by running GCC in a fake filesystem, creating all
++  // possible permutations of these directories, and seeing which ones it added
++  // to the link paths.
+   path_list &Paths = getFilePaths();
+ 
+   const std::string OSLibDir = getOSLibDir(Triple, Args);
+   const std::string MultiarchTriple = getMultiarchTriple(D, Triple, SysRoot);
+ 
++  // Add the multilib suffixed paths where they are available.
++  if (GCCInstallation.isValid()) {
++    const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
++    const std::string &LibPath = GCCInstallation.getParentLibPath();
++    const Multilib &Multilib = GCCInstallation.getMultilib();
++    const MultilibSet &Multilibs = GCCInstallation.getMultilibs();
++
++    // Add toolchain / multilib specific file paths.
++    addMultilibsFilePaths(D, Multilibs, Multilib,
++                          GCCInstallation.getInstallPath(), Paths);
++
++    // Sourcery CodeBench MIPS toolchain holds some libraries under
++    // a biarch-like suffix of the GCC installation.
++    addPathIfExists(D, GCCInstallation.getInstallPath() + Multilib.gccSuffix(),
++                    Paths);
++
++    // GCC cross compiling toolchains will install target libraries which ship
++    // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
++    // any part of the GCC installation in
++    // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
++    // debatable, but is the reality today. We need to search this tree even
++    // when we have a sysroot somewhere else. It is the responsibility of
++    // whomever is doing the cross build targeting a sysroot using a GCC
++    // installation that is *not* within the system root to ensure two things:
++    //
++    //  1) Any DSOs that are linked in from this tree or from the install path
++    //     above must be present on the system root and found via an
++    //     appropriate rpath.
++    //  2) There must not be libraries installed into
++    //     <prefix>/<triple>/<libdir> unless they should be preferred over
++    //     those within the system root.
++    //
++    // Note that this matches the GCC behavior. See the below comment for where
++    // Clang diverges from GCC's behavior.
++    addPathIfExists(D, LibPath + "/../" + GCCTriple.str() + "/lib/../" +
++                           OSLibDir + Multilib.osSuffix(),
++                    Paths);
++
++    // If the GCC installation we found is inside of the sysroot, we want to
++    // prefer libraries installed in the parent prefix of the GCC installation.
++    // It is important to *not* use these paths when the GCC installation is
++    // outside of the system root as that can pick up unintended libraries.
++    // This usually happens when there is an external cross compiler on the
++    // host system, and a more minimal sysroot available that is the target of
++    // the cross. Note that GCC does include some of these directories in some
++    // configurations but this seems somewhere between questionable and simply
++    // a bug.
++    if (StringRef(LibPath).startswith(SysRoot)) {
++      addPathIfExists(D, LibPath + "/" + MultiarchTriple, Paths);
++      addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
++    }
++  }
++
+   // Similar to the logic for GCC above, if we currently running Clang inside
+   // of the requested system root, add its parent library paths to
+   // those searched.
+@@ -92,8 +179,40 @@ Hurd::Hurd(const Driver &D, const llvm::
+   addPathIfExists(D, SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
+   addPathIfExists(D, SysRoot + "/usr/lib/../" + OSLibDir, Paths);
+ 
+-  // If we are currently running Clang inside of the requested system root, add
+-  // its parent library path to those searched.
++  // Try walking via the GCC triple path in case of biarch or multiarch GCC
++  // installations with strange symlinks.
++  if (GCCInstallation.isValid()) {
++    addPathIfExists(D,
++                    SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() +
++                        "/../../" + OSLibDir,
++                    Paths);
++
++    // Add the 'other' biarch variant path
++    Multilib BiarchSibling;
++    if (GCCInstallation.getBiarchSibling(BiarchSibling)) {
++      addPathIfExists(D, GCCInstallation.getInstallPath() +
++                             BiarchSibling.gccSuffix(),
++                      Paths);
++    }
++
++    // See comments above on the multilib variant for details of why this is
++    // included even from outside the sysroot.
++    const std::string &LibPath = GCCInstallation.getParentLibPath();
++    const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
++    const Multilib &Multilib = GCCInstallation.getMultilib();
++    addPathIfExists(D, LibPath + "/../" + GCCTriple.str() + "/lib" +
++                           Multilib.osSuffix(),
++                    Paths);
++
++    // See comments above on the multilib variant for details of why this is
++    // only included from within the sysroot.
++    if (StringRef(LibPath).startswith(SysRoot))
++      addPathIfExists(D, LibPath, Paths);
++  }
++
++  // Similar to the logic for GCC above, if we are currently running Clang
++  // inside of the requested system root, add its parent library path to those
++  // searched.
+   // FIXME: It's not clear whether we should use the driver's installed
+   // directory ('Dir' below) or the ResourceDir.
+   if (StringRef(D.Dir).startswith(SysRoot))
+@@ -161,6 +280,16 @@ void Hurd::AddClangSystemIncludeArgs(con
+   // Lacking those, try to detect the correct set of system includes for the
+   // target triple.
+ 
++  // Add include directories specific to the selected multilib set and multilib.
++  if (GCCInstallation.isValid()) {
++    const auto &Callback = Multilibs.includeDirsCallback();
++    if (Callback) {
++      for (const auto &Path : Callback(GCCInstallation.getMultilib()))
++        addExternCSystemIncludeIfExists(
++            DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path);
++    }
++  }
++
+   const StringRef X86MultiarchIncludeDirs[] = {
+       "/usr/include/i386-gnu"};
+ 
+@@ -187,3 +316,94 @@ void Hurd::AddClangSystemIncludeArgs(con
+ 
+   addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include");
+ }
++
++static std::string DetectLibcxxIncludePath(StringRef base) {
++  std::error_code EC;
++  int MaxVersion = 0;
++  std::string MaxVersionString = "";
++  for (llvm::sys::fs::directory_iterator LI(base, EC), LE; !EC && LI != LE;
++       LI = LI.increment(EC)) {
++    StringRef VersionText = llvm::sys::path::filename(LI->path());
++    int Version;
++    if (VersionText[0] == 'v' &&
++        !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) {
++      if (Version > MaxVersion) {
++        MaxVersion = Version;
++        MaxVersionString = VersionText;
++      }
++    }
++  }
++  return MaxVersion ? (base + "/" + MaxVersionString).str() : "";
++}
++
++void Hurd::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
++                                 llvm::opt::ArgStringList &CC1Args) const {
++  const std::string& SysRoot = computeSysRoot();
++  const std::string LibCXXIncludePathCandidates[] = {
++      DetectLibcxxIncludePath(getDriver().ResourceDir + "/include/c++"),
++      DetectLibcxxIncludePath(getDriver().Dir + "/../include/c++"),
++      // If this is a development, non-installed, clang, libcxx will
++      // not be found at ../include/c++ but it likely to be found at
++      // one of the following two locations:
++      DetectLibcxxIncludePath(SysRoot + "/usr/local/include/c++"),
++      DetectLibcxxIncludePath(SysRoot + "/usr/include/c++") };
++  for (const auto &IncludePath : LibCXXIncludePathCandidates) {
++    if (IncludePath.empty() || !getVFS().exists(IncludePath))
++      continue;
++    // Use the first candidate that exists.
++    addSystemInclude(DriverArgs, CC1Args, IncludePath);
++    return;
++  }
++}
++
++void Hurd::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
++                                    llvm::opt::ArgStringList &CC1Args) const {
++  // We need a detected GCC installation on Hurd to provide libstdc++'s
++  // headers.
++  if (!GCCInstallation.isValid())
++    return;
++
++  // By default, look for the C++ headers in an include directory adjacent to
++  // the lib directory of the GCC installation. Note that this is expect to be
++  // equivalent to '/usr/include/c++/X.Y' in almost all cases.
++  StringRef LibDir = GCCInstallation.getParentLibPath();
++  StringRef InstallDir = GCCInstallation.getInstallPath();
++  StringRef TripleStr = GCCInstallation.getTriple().str();
++  const Multilib &Multilib = GCCInstallation.getMultilib();
++  const std::string GCCMultiarchTriple = getMultiarchTriple(
++      getDriver(), GCCInstallation.getTriple(), getDriver().SysRoot);
++  const std::string TargetMultiarchTriple =
++      getMultiarchTriple(getDriver(), getTriple(), getDriver().SysRoot);
++  const GCCVersion &Version = GCCInstallation.getVersion();
++
++  // The primary search for libstdc++ supports multiarch variants.
++  if (addLibStdCXXIncludePaths(LibDir.str() + "/../include",
++                               "/c++/" + Version.Text, TripleStr,
++                               GCCMultiarchTriple, TargetMultiarchTriple,
++                               Multilib.includeSuffix(), DriverArgs, CC1Args))
++    return;
++
++  // Otherwise, fall back on a bunch of options which don't use multiarch
++  // layouts for simplicity.
++  const std::string LibStdCXXIncludePathCandidates[] = {
++      // Gentoo is weird and places its headers inside the GCC install,
++      // so if the first attempt to find the headers fails, try these patterns.
++      InstallDir.str() + "/include/g++-v" + Version.Text,
++      InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
++          Version.MinorStr,
++      InstallDir.str() + "/include/g++-v" + Version.MajorStr,
++      // Android standalone toolchain has C++ headers in yet another place.
++      LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
++      // Freescale SDK C++ headers are directly in <sysroot>/usr/include/c++,
++      // without a subdirectory corresponding to the gcc version.
++      LibDir.str() + "/../include/c++",
++  };
++
++  for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
++    if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
++                                 /*GCCMultiarchTriple*/ "",
++                                 /*TargetMultiarchTriple*/ "",
++                                 Multilib.includeSuffix(), DriverArgs, CC1Args))
++      break;
++  }
++}
+Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
+===================================================================
+--- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Hurd.h
++++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
+@@ -25,6 +25,12 @@ public:
+   void
+   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                             llvm::opt::ArgStringList &CC1Args) const override;
++  void addLibCxxIncludePaths(
++      const llvm::opt::ArgList &DriverArgs,
++      llvm::opt::ArgStringList &CC1Args) const override;
++  void addLibStdCxxIncludePaths(
++      const llvm::opt::ArgList &DriverArgs,
++      llvm::opt::ArgStringList &CC1Args) const override;
+ 
+   virtual std::string computeSysRoot() const;
+ 
diff --git a/debian/patches/series b/debian/patches/series
index b848aae0..ca9b7051 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -89,3 +89,12 @@ mips-rdhwr.diff
 clang-arm-default-vfp3-on-armv7a.patch
 reproducible-pch.diff
 pr39427-misscompile.diff
+
+# Hurd port
+D54079-hurd-openmp.diff
+D54338-hurd-libcxx-threads-build.diff
+D54339-hurd-libcxx-threads-detection.diff
+D54378-hurd-triple.diff
+D54379-hurd-triple-clang.diff
+D54677-hurd-path_max.diff
+hurd-cxx-paths.diff

From bde1bb9e42bba5ec6cd3bb7f5f2e90402dddee59 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@mozilla.com>
Date: Wed, 21 Nov 2018 09:17:14 +0100
Subject: [PATCH 18/23] add a testcase for bug
 https://bugs.debian.org/cgi-bin/bugreport.cgi\?bug=914201

---
 debian/qualify-clang.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index d2d61d13..08e61353 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -496,6 +496,18 @@ int main()
 clang++-$VERSION -stdlib=libc++ -Wall -Werror foo.cpp -o foo
 ./foo
 
+# Bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914201
+echo '
+#include <math.h>
+int main(void)
+{
+    double f = 2.0;
+    if (isnan(f))
+      return 1;
+    return 0;
+}' > foo.c
+clang-$VERSION -Wconversion -Werror foo.c || true
+
 if test -f /usr/bin/g++; then
 g++ -nostdinc++ -I/usr/lib/llvm-$VERSION/bin/../include/c++/v1/ -L/usr/lib/llvm-$VERSION/lib/ \
     foo.cpp -nodefaultlibs -std=c++17 -lc++ -lc++abi -lm -lc -lgcc_s -lgcc|| true

From 52ca5481526e3c858fe66fb7f174b4f21494f13f Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Wed, 21 Nov 2018 12:03:51 +0100
Subject: [PATCH 19/23] more patch applied upstream

---
 debian/changelog               |  9 ++++--
 debian/patches/mips-rdhwr.diff | 50 ----------------------------------
 debian/patches/series          |  1 -
 3 files changed, 7 insertions(+), 53 deletions(-)
 delete mode 100644 debian/patches/mips-rdhwr.diff

diff --git a/debian/changelog b/debian/changelog
index 8bcfc4c7..7a83371d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,11 +1,16 @@
-llvm-toolchain-7 (1:7.0.1~+rc2-5) UNRELEASED; urgency=medium
+llvm-toolchain-7 (1:7.0.1~svn347285-1~exp1) UNRELEASED; urgency=medium
 
+  [ Samuel Thibault ]
   * D54079-hurd-openmp.diff, D54338-hurd-libcxx-threads-build.diff,
     D54339-hurd-libcxx-threads-detection.diff, D54378-hurd-triple.diff,
     D54379-hurd-triple-clang.diff, D54677-hurd-path_max.diff,
     hurd-cxx-paths.diff: New patches to fix hurd build.
 
- -- Samuel Thibault <sthibault@debian.org>  Sun, 18 Nov 2018 23:43:55 +0100
+  [ Sylvestre Ledru ]
+  * experimental New snapshot release
+  * Remove mips-rdhwr.diff as it has been applied upstream
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Wed, 21 Nov 2018 09:45:00 +0100
 
 llvm-toolchain-7 (1:7.0.1~+rc2-4) unstable; urgency=medium
 
diff --git a/debian/patches/mips-rdhwr.diff b/debian/patches/mips-rdhwr.diff
deleted file mode 100644
index f7eef110..00000000
--- a/debian/patches/mips-rdhwr.diff
+++ /dev/null
@@ -1,50 +0,0 @@
-Index: llvm-toolchain-7-7/lib/Target/Mips/Mips64InstrInfo.td
-===================================================================
---- llvm-toolchain-7-7.orig/lib/Target/Mips/Mips64InstrInfo.td
-+++ llvm-toolchain-7-7/lib/Target/Mips/Mips64InstrInfo.td
-@@ -1139,3 +1139,6 @@ def SLTUImm64 : MipsAsmPseudoInst<(outs
-                                   "sltu\t$rs, $rt, $imm">, GPR_64;
- def : MipsInstAlias<"sltu\t$rs, $imm", (SLTUImm64 GPR64Opnd:$rs, GPR64Opnd:$rs,
-                                                   imm64:$imm)>, GPR_64;
-+
-+def : MipsInstAlias<"rdhwr $rt, $rs",
-+                    (RDHWR64 GPR64Opnd:$rt, HWRegsOpnd:$rs, 0), 1>, GPR_64;
-Index: llvm-toolchain-7-7/test/CodeGen/Mips/tls.ll
-===================================================================
---- llvm-toolchain-7-7.orig/test/CodeGen/Mips/tls.ll
-+++ llvm-toolchain-7-7/test/CodeGen/Mips/tls.ll
-@@ -48,14 +48,14 @@ entry:
- ; STATIC32-LABEL:   f1:
- ; STATIC32:   lui     $[[R0:[0-9]+]], %tprel_hi(t1)
- ; STATIC32:   addiu   $[[R1:[0-9]+]], $[[R0]], %tprel_lo(t1)
--; STATIC32:   rdhwr   $3, $29
-+; STATIC32:   rdhwr   $3, $29{{$}}
- ; STATIC32:   addu    $[[R2:[0-9]+]], $3, $[[R1]]
- ; STATIC32:   lw      $2, 0($[[R2]])
- 
- ; STATIC64-LABEL:   f1:
- ; STATIC64:   lui     $[[R0:[0-9]+]], %tprel_hi(t1)
- ; STATIC64:   daddiu  $[[R1:[0-9]+]], $[[R0]], %tprel_lo(t1)
--; STATIC64:   rdhwr   $3, $29, 0
-+; STATIC64:   rdhwr   $3, $29{{$}}
- ; STATIC64:   daddu   $[[R2:[0-9]+]], $3, $[[R0]]
- ; STATIC64:   lw      $2, 0($[[R2]])
- }
-@@ -101,7 +101,7 @@ entry:
- ; STATIC32-LABEL:   f2:
- ; STATIC32:   lui     $[[R0:[0-9]+]], %hi(__gnu_local_gp)
- ; STATIC32:   addiu   $[[GP:[0-9]+]], $[[R0]], %lo(__gnu_local_gp)
--; STATIC32:   rdhwr   $3, $29
-+; STATIC32:   rdhwr   $3, $29{{$}}
- ; STATIC32:   lw      $[[R0:[0-9]+]], %gottprel(t2)($[[GP]])
- ; STATIC32:   addu    $[[R1:[0-9]+]], $3, $[[R0]]
- ; STATIC32:   lw      $2, 0($[[R1]])
-@@ -109,7 +109,7 @@ entry:
- ; STATIC64-LABEL:   f2:
- ; STATIC64:   lui     $[[R0:[0-9]+]], %hi(%neg(%gp_rel(f2)))
- ; STATIC64:   daddiu  $[[GP:[0-9]+]], $[[R0]], %lo(%neg(%gp_rel(f2)))
--; STATIC64:   rdhwr   $3, $29
-+; STATIC64:   rdhwr   $3, $29{{$}}
- ; STATIC64:   ld      $[[R0:[0-9]+]], %gottprel(t2)($[[GP]])
- ; STATIC64:   daddu   $[[R1:[0-9]+]], $3, $[[R0]]
- ; STATIC64:   lw      $2, 0($[[R1]])
diff --git a/debian/patches/series b/debian/patches/series
index ca9b7051..07afa1e2 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -85,7 +85,6 @@ clangd-atomic-cmake.patch
 rustc-aarch64-test-failure.diff
 symbolizer-path.diff
 remove-apple-clang-manpage.diff
-mips-rdhwr.diff
 clang-arm-default-vfp3-on-armv7a.patch
 reproducible-pch.diff
 pr39427-misscompile.diff

From 144b3435473ca40148fd806a8554b9e85fdb2ad9 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Wed, 21 Nov 2018 12:04:26 +0100
Subject: [PATCH 20/23] rebase of the patches

---
 debian/patches/D54677-hurd-path_max.diff | 10 +++++-----
 debian/patches/hurd-cxx-paths.diff       | 18 +++++++++---------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/debian/patches/D54677-hurd-path_max.diff b/debian/patches/D54677-hurd-path_max.diff
index 12b09168..f0cafd11 100644
--- a/debian/patches/D54677-hurd-path_max.diff
+++ b/debian/patches/D54677-hurd-path_max.diff
@@ -4,11 +4,11 @@ The GNU/Hurd system does not define an arbitrary PATH_MAX limitation, the POSIX
 
 https://reviews.llvm.org/D54677
 
-Index: llvm/libcxx/src/filesystem/operations.cpp
+Index: llvm-toolchain-7_7.0.1~svn347285/libcxx/src/filesystem/operations.cpp
 ===================================================================
---- llvm/libcxx/src/filesystem/operations.cpp	(révision 347139)
-+++ llvm/libcxx/src/filesystem/operations.cpp	(copie de travail)
-@@ -530,11 +530,20 @@
+--- llvm-toolchain-7_7.0.1~svn347285.orig/libcxx/src/filesystem/operations.cpp
++++ llvm-toolchain-7_7.0.1~svn347285/libcxx/src/filesystem/operations.cpp
+@@ -531,11 +531,20 @@ path __canonical(path const& orig_p, err
    ErrorHandler<path> err("canonical", ec, &orig_p, &cwd);
  
    path p = __do_absolute(orig_p, &cwd, ec);
@@ -29,7 +29,7 @@ Index: llvm/libcxx/src/filesystem/operations.cpp
  }
  
  void __copy(const path& from, const path& to, copy_options options,
-@@ -1076,16 +1085,27 @@
+@@ -1077,16 +1086,27 @@ void __permissions(const path& p, perms
  path __read_symlink(const path& p, error_code* ec) {
    ErrorHandler<path> err("read_symlink", ec, &p);
  
diff --git a/debian/patches/hurd-cxx-paths.diff b/debian/patches/hurd-cxx-paths.diff
index 316e9ee2..a3068846 100644
--- a/debian/patches/hurd-cxx-paths.diff
+++ b/debian/patches/hurd-cxx-paths.diff
@@ -1,9 +1,9 @@
 This should be factorized with Linux.cpp and the GNU/kFreeBSD case.
 
-Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+Index: llvm-toolchain-7_7.0.1~svn347285/clang/lib/Driver/ToolChains/Hurd.cpp
 ===================================================================
---- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Hurd.cpp
-+++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
+--- llvm-toolchain-7_7.0.1~svn347285.orig/clang/lib/Driver/ToolChains/Hurd.cpp
++++ llvm-toolchain-7_7.0.1~svn347285/clang/lib/Driver/ToolChains/Hurd.cpp
 @@ -67,15 +67,102 @@ static StringRef getOSLibDir(const llvm:
    return Triple.isArch32Bit() ? "lib" : "lib64";
  }
@@ -150,7 +150,7 @@ Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
    // FIXME: It's not clear whether we should use the driver's installed
    // directory ('Dir' below) or the ResourceDir.
    if (StringRef(D.Dir).startswith(SysRoot))
-@@ -161,6 +280,16 @@ void Hurd::AddClangSystemIncludeArgs(con
+@@ -163,6 +282,16 @@ void Hurd::AddClangSystemIncludeArgs(con
    // Lacking those, try to detect the correct set of system includes for the
    // target triple.
  
@@ -167,7 +167,7 @@ Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
    const StringRef X86MultiarchIncludeDirs[] = {
        "/usr/include/i386-gnu"};
  
-@@ -187,3 +316,94 @@ void Hurd::AddClangSystemIncludeArgs(con
+@@ -189,3 +318,94 @@ void Hurd::AddClangSystemIncludeArgs(con
  
    addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include");
  }
@@ -262,11 +262,11 @@ Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.cpp
 +      break;
 +  }
 +}
-Index: llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
+Index: llvm-toolchain-7_7.0.1~svn347285/clang/lib/Driver/ToolChains/Hurd.h
 ===================================================================
---- llvm-toolchain-7-7.0.1~+rc2.orig/clang/lib/Driver/ToolChains/Hurd.h
-+++ llvm-toolchain-7-7.0.1~+rc2/clang/lib/Driver/ToolChains/Hurd.h
-@@ -25,6 +25,12 @@ public:
+--- llvm-toolchain-7_7.0.1~svn347285.orig/clang/lib/Driver/ToolChains/Hurd.h
++++ llvm-toolchain-7_7.0.1~svn347285/clang/lib/Driver/ToolChains/Hurd.h
+@@ -27,6 +27,12 @@ public:
    void
    AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
                              llvm::opt::ArgStringList &CC1Args) const override;

From 9129d72e28232a01e17fbe10acaec6d3192932b9 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Wed, 21 Nov 2018 12:27:24 +0100
Subject: [PATCH 21/23] Fix a baseline violation on armhf (Closes: #914268)
 clang-arm-default-vfp3-on-armv7a.patch has been updated to disable neon in
 another place

---
 debian/changelog                                     |  4 +++-
 .../patches/clang-arm-default-vfp3-on-armv7a.patch   | 12 ++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/debian/changelog b/debian/changelog
index 7a83371d..c5e24492 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -7,8 +7,10 @@ llvm-toolchain-7 (1:7.0.1~svn347285-1~exp1) UNRELEASED; urgency=medium
     hurd-cxx-paths.diff: New patches to fix hurd build.
 
   [ Sylvestre Ledru ]
-  * experimental New snapshot release
   * Remove mips-rdhwr.diff as it has been applied upstream
+  * Fix a baseline violation on armhf (Closes: #914268)
+    clang-arm-default-vfp3-on-armv7a.patch has been updated to disable
+    neon in another place
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Wed, 21 Nov 2018 09:45:00 +0100
 
diff --git a/debian/patches/clang-arm-default-vfp3-on-armv7a.patch b/debian/patches/clang-arm-default-vfp3-on-armv7a.patch
index ce4daf4e..7179927b 100644
--- a/debian/patches/clang-arm-default-vfp3-on-armv7a.patch
+++ b/debian/patches/clang-arm-default-vfp3-on-armv7a.patch
@@ -11,3 +11,15 @@ Index: llvm-toolchain-7-7/include/llvm/Support/ARMTargetParser.def
  ARM_ARCH("armv7ve", ARMV7VE, "7VE", "v7ve", ARMBuildAttrs::CPUArch::v7,
            FK_NEON, (ARM::AEK_SEC | ARM::AEK_MP | ARM::AEK_VIRT |
            ARM::AEK_HWDIVARM | ARM::AEK_HWDIVTHUMB | ARM::AEK_DSP))
+Index: llvm-toolchain-7-7/lib/Target/ARM/ARM.td
+===================================================================
+--- llvm-toolchain-7-7.orig/lib/Target/ARM/ARM.td
++++ llvm-toolchain-7-7/lib/Target/ARM/ARM.td
+@@ -558,7 +558,6 @@ def ARMv6sm   : Architecture<"armv6s-m",
+                                                        FeatureStrictAlign]>;
+ 
+ def ARMv7a    : Architecture<"armv7-a",   "ARMv7a",   [HasV7Ops,
+-                                                       FeatureNEON,
+                                                        FeatureDB,
+                                                        FeatureDSP,
+                                                        FeatureAClass]>;

From 4f3a67d8244daf6d29e75556e2b198a628bd32f7 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Wed, 21 Nov 2018 12:29:59 +0100
Subject: [PATCH 22/23] prepare upload

---
 debian/changelog | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/changelog b/debian/changelog
index c5e24492..7a099dd4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-llvm-toolchain-7 (1:7.0.1~svn347285-1~exp1) UNRELEASED; urgency=medium
+llvm-toolchain-7 (1:7.0.1~+rc2-5) unstable; urgency=medium
 
   [ Samuel Thibault ]
   * D54079-hurd-openmp.diff, D54338-hurd-libcxx-threads-build.diff,

From db50715aa8526e57678be47d14c966e7cc13d5a7 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@mozilla.com>
Date: Wed, 21 Nov 2018 22:40:43 +0100
Subject: [PATCH 23/23] also ignore libclangTidyModernizeModule.a

---
 debian/rules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index b8bdb470..caa1c9bb 100755
--- a/debian/rules
+++ b/debian/rules
@@ -692,7 +692,7 @@ endif
 # endif
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' binutils) ge 2.28 ; echo $$?),0)
 # strip segfaults on libFuzzer.a
-	dh_strip -a -v -XlibFuzzer.a -Xlibc++.a -Xlibc++abi.a -Xlibc++experimental.a
+	dh_strip -a -v -XlibFuzzer.a -Xlibc++.a -Xlibc++abi.a -Xlibc++experimental.a -XlibclangTidyModernizeModule.a
 else
 	dh_strip -a -v
 endif