* Try to fix the mipsel FTBFS (Closes: #877567)

I am trying the first option from the bug:
  - gsplit-dward on 32 bits archs
  - -g everywhere
  Many thanks to Adrian Bunk for that

debian/changelog

@@ -4,6 +4,11 @@ llvm-toolchain-snapshot (1:6.0~svn315736-2) unstable; urgency=medium
   * Update d/rules to reflect the move of libfuzzer into compiler-rt
   * Update of the copyright file (Closes: #878502)
     Thanks to Nicholas D Steeves for the work
+  * Try to fix the mipsel FTBFS (Closes: #877567)
+    I am trying the first option from the bug:
+    - gsplit-dward on 32 bits archs
+    - -g everywhere
+    Many thanks to Adrian Bunk for that
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Mon, 16 Oct 2017 10:24:33 +0200
 

debian/rules

@@ -34,9 +34,8 @@ ifneq (,$(filter $(DEB_HOST_ARCH),powerpc powerpcspe))
 LDFLAGS_EXTRA += -latomic
 endif
 
-ENABLE_SPLIT_DWARF_ARCHS := armel armhf i386 mips powerpc
-# Only enable gsplit dwarf on archs which needs it
-ifneq (,$(filter $(DEB_HOST_ARCH),$(ENABLE_SPLIT_DWARF_ARCHS)))
+# Only enable gsplit dwarf on archs which needs it (32 bits)
+ifeq ($(DEB_HOST_ARCH_BITS),32)
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' binutils) ge 2.22.52.0.4 ; echo $$?),0)
 # when using -gsplit-dwarf, it will requires extract-dwo which doesn't exist on precise:
 # More: https://llvm.org/bugs/show_bug.cgi?id=28841
@@ -51,7 +50,6 @@ endif # < gcc 7 or >= 7.2.0-2
 endif # binutils
 endif # archs
 
-
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' g++-$(GCC_VERSION)) lt 4.9-20140411-1~ ; echo $$?),0)
 # Too old version of gcc. Force 4.9
 	GCC_VERSION := 4.9
@@ -61,11 +59,6 @@ export CC=gcc-$(GCC_VERSION)
 export CXX=g++-$(GCC_VERSION)
 
 opt_flags = -O2 -DNDEBUG
-ifneq (,$(filter $(DEB_HOST_ARCH),amd64 arm64 ppc64el s390x))
-  opt_flags += -g1
-else
-  opt_flags += -g
-endif
 
 ifneq (,$(findstring $(DEB_HOST_ARCH),armel))
   opt_flags += -marm