Patch compiler-rt to fix "make clang_mingw" with the 3.9 branch

Dockerfile

@@ -108,6 +108,9 @@ RUN cp /build/mingw-w64/mingw-w64-libraries/winpthreads/include/* $MINGW_PREFIX/
 #Work around upstream issue with capital W windows.h
 RUN ln -s /build/prefix/armv7-w64-mingw32/include/windows.h /build/prefix/armv7-w64-mingw32/include/Windows.h
 
+RUN cd compiler-rt && \
+    git am /build/patches/compiler-rt-*.patch
+
 # Manually build compiler-rt as a standalone project
 RUN cd compiler-rt && \
     make clang_mingw-builtins-arm

patches/compiler-rt-0001.patch

@@ -0,0 +1,55 @@
+From 1e1bd1b7ddb2b259a88fcdc3fdeea6fad16d3b11 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
+Date: Tue, 9 Aug 2016 23:50:59 +0300
+Subject: [PATCH] Fix "make clang_mingw-builtins-arm" with latest master
+
+This does the same to clang_linux.mk as was done in SVN rev
+258863, git mirror commit 20da67f8d3f8.
+---
+ make/platform/clang_linux.mk | 14 ++------------
+ 1 file changed, 2 insertions(+), 12 deletions(-)
+
+diff --git a/make/platform/clang_linux.mk b/make/platform/clang_linux.mk
+index 870209f..6dce2e1 100644
+--- a/make/platform/clang_linux.mk
++++ b/make/platform/clang_linux.mk
+@@ -49,16 +49,14 @@ endif
+ 
+ # Build runtime libraries for i386.
+ ifeq ($(call contains,$(SupportedArches),i386),true)
+-Configs += builtins-i386 profile-i386
++Configs += builtins-i386
+ Arch.builtins-i386 := i386
+-Arch.profile-i386 := i386
+ endif
+ 
+ # Build runtime libraries for x86_64.
+ ifeq ($(call contains,$(SupportedArches),x86_64),true)
+-Configs += builtins-x86_64 profile-x86_64
++Configs += builtins-x86_64
+ Arch.builtins-x86_64 := x86_64
+-Arch.profile-x86_64 := x86_64
+ endif
+ 
+ endif
+@@ -71,17 +69,9 @@ CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
+ 
+ CFLAGS.builtins-i386 := $(CFLAGS) -m32
+ CFLAGS.builtins-x86_64 := $(CFLAGS) -m64
+-CFLAGS.profile-i386 := $(CFLAGS) -m32
+-CFLAGS.profile-x86_64 := $(CFLAGS) -m64
+ 
+ FUNCTIONS.builtins-i386 := $(CommonFunctions) $(ArchFunctions.i386)
+ FUNCTIONS.builtins-x86_64 := $(CommonFunctions) $(ArchFunctions.x86_64)
+-FUNCTIONS.profile-i386 := GCDAProfiling InstrProfiling InstrProfilingBuffer \
+-                          InstrProfilingFile InstrProfilingPlatformOther \
+-                          InstrProfilingRuntime InstrProfilingUtil \
+-                          InstrProfilingWriter InstrProfilingValue \
+-                          InstrProfilingMerge InstrProfilingMergeFile
+-FUNCTIONS.profile-x86_64 := $(FUNCTIONS.profile-i386)
+ 
+ # Always use optimized variants.
+ OPTIMIZED := 1
+-- 
+2.7.4
+