From 19b13fcc699e65bc73e8496cf65b560dcd43e315 Mon Sep 17 00:00:00 2001
From: Ximin Luo <infinity0@debian.org>
Date: Thu, 14 Oct 2021 00:36:00 +0100
Subject: [PATCH] Fix build failures for ppc64el and armhf

---
 debian/changelog              |  7 +++++++
 debian/patches/series         |  1 +
 debian/patches/u-cc-627.patch | 16 ++++++++++++++++
 debian/rules                  |  2 +-
 4 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 debian/patches/u-cc-627.patch

diff --git a/debian/changelog b/debian/changelog
index 1bdaed6879..03d9d9387d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+rustc (1.55.0+dfsg1-2) UNRELEASED; urgency=medium
+
+  * Actually work around segfault on ppc64el.
+  * Fix FTBFS on armhf caused by GCC 11 changes.
+
+ -- Ximin Luo <infinity0@debian.org>  Wed, 13 Oct 2021 23:46:57 +0100
+
 rustc (1.55.0+dfsg1-1) unstable; urgency=medium
 
   * Upload to unstable.
diff --git a/debian/patches/series b/debian/patches/series
index 0448287568..bde75ac5f5 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -7,6 +7,7 @@ u-85807.patch
 0001-Revert-Auto-merge-of-79547.patch
 u-reproducible-build.patch
 u-ignore-endian-big-diff.patch
+u-cc-627.patch
 
 # not forwarded, or forwarded but unlikely to be merged
 u-ignore-ppc-hangs.patch
diff --git a/debian/patches/u-cc-627.patch b/debian/patches/u-cc-627.patch
new file mode 100644
index 0000000000..983d6d611b
--- /dev/null
+++ b/debian/patches/u-cc-627.patch
@@ -0,0 +1,16 @@
+Forwarded: https://github.com/alexcrichton/cc-rs/pull/627
+
+--- a/vendor/cc/src/lib.rs
++++ b/vendor/cc/src/lib.rs
+@@ -1559,6 +1559,11 @@
+                     && target.contains("-linux-")
+                 {
+                     cmd.args.push("-march=armv7-a".into());
++
++                    if target.ends_with("eabihf") {
++                        // lowest common denominator FPU
++                        cmd.args.push("-mfpu=vfpv3-d16".into());
++                    }
+                 }
+ 
+                 // (x86 Android doesn't say "eabi")
diff --git a/debian/rules b/debian/rules
index e14198dbdf..756e6fa28c 100755
--- a/debian/rules
+++ b/debian/rules
@@ -53,7 +53,7 @@ RUSTBUILD_TEST_FLAGS =
 # https://github.com/rust-lang/rust/issues/89744
 # TODO: remove when we update cargo to 1.55 / 0.56
 # upstream bug still exists and is under investigation, but is hidden by newer cargo
-export CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_OPT_LEVEL=3
+export CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_OPT_LEVEL=0
 
 update-version:
 	oldver=$(shell $(SED_RUSTC_BUILDDEP) | sed -ne 's/.*(<= \(.*\)).*/\1/gp' | $(SED_VERSION_SHORT)); \