Add Rust-specific buildsystem fixes

lib/builtins/CMakeLists.txt

@@ -347,7 +347,7 @@ if (APPLE)
  add_subdirectory(Darwin-excludes)
  add_subdirectory(macho_embedded)
  darwin_add_builtin_libraries(${BUILTIN_SUPPORTED_OS})
-elseif (NOT WIN32 OR MINGW)
+else ()
  foreach (arch ${BUILTIN_SUPPORTED_ARCH})
  if (CAN_TARGET_${arch})
  # Filter out generic versions of routines that are re-implemented in

make/config.mk

@@ -44,6 +44,6 @@ endif
 ###
 # Common compiler options
 COMMON_INCLUDES=-I${ProjSrcRoot}/lib -I${ProjSrcRoot}/include
-COMMON_CXXFLAGS=-std=c++11 -fno-exceptions -fPIC -funwind-tables $(COMMON_INCLUDES)
-COMMON_CFLAGS=-fPIC $(COMMON_INCLUDES)
+COMMON_CXXFLAGS=-std=c++11 -fno-exceptions -funwind-tables $(COMMON_INCLUDES)
+COMMON_CFLAGS=$(COMMON_INCLUDES)
 COMMON_ASMFLAGS=$(COMMON_INCLUDES)

make/platform/clang_darwin.mk

@@ -151,7 +151,7 @@ $(foreach config,$(Configs),\
 override CC := $(subst -arch ,-arch_,$(CC))
 override CC := $(patsubst -arch_%,,$(CC))
 
-CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
+CFLAGS := -fPIC -Wall -Werror -O3 -fomit-frame-pointer
 
 # Always set deployment target arguments for every build, these libraries should
 # never depend on the environmental overrides. We simply set them to minimum

make/platform/clang_linux.mk

@@ -67,7 +67,7 @@ endif
 
 ###
 
-CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
+CFLAGS := -fPIC -Wall -Werror -O3 -fomit-frame-pointer
 
 CFLAGS.builtins-i386 := $(CFLAGS) -m32
 CFLAGS.builtins-x86_64 := $(CFLAGS) -m64

make/platform/darwin_bni.mk

@@ -29,7 +29,7 @@ ifneq (,$(SDKROOT))
  DEPLOYMENT_FLAGS += -isysroot $(SDKROOT)
 endif
 
-CFLAGS := -Wall -Os -fomit-frame-pointer -g $(DEPLOYMENT_FLAGS)
+CFLAGS := -fPIC -Wall -Os -fomit-frame-pointer -g $(DEPLOYMENT_FLAGS)
 CFLAGS.Static := $(CFLAGS) -static 
 DYLIB_FLAGS := $(DEPLOYMENT_FLAGS) \
  -Xarch_arm -Wl,-alias_list,$(SRCROOT)/lib/builtins/arm/softfloat-alias.list

make/platform/triple.mk

@@ -0,0 +1,66 @@
+# This "platform" file is intended for building compiler-rt using gcc.
+# The actual target platform is selected by setting the TargetTriple variable to the corresponding LLVM triple.
+
+Description := Static runtime libraries for platforms selected by 'TargetTriple'
+
+# Provide defaults for the required vars
+ifndef CC
+ CC := gcc
+endif
+ifndef CFLAGS
+ CFLAGS := -Wall -O3
+endif
+
+Configs := builtins
+
+Arch := $(word 1,$(subst -, ,$(TargetTriple)))
+ifeq ($(Arch),i686)
+ Arch := i386
+else ifeq ($(Arch),arm)
+ifneq (,$(findstring ios,$(TargetTriple)))
+ Arch := armv7
+else ifneq (,$(findstring android,$(TargetTriple)))
+ Arch := armv7
+endif
+endif
+
+# Filter out stuff that gcc cannot compile (these are only needed for clang-generated code anywasys).
+CommonFunctions_gcc := $(filter-out atomic% enable_execute_stack,$(CommonFunctions))
+
+# Filter out stuff which is not available on specific target
+# For example, sync_fetch_and_add_4 uses Thumb instructions, which are unavailable
+# when building for arm-linux-androideabi
+ifeq ($(TargetTriple),arm-linux-androideabi)
+ ArchDisabledFunctions := \
+ sync_fetch_and_add_4 \
+ sync_fetch_and_sub_4 \
+ sync_fetch_and_and_4 \
+ sync_fetch_and_or_4 \
+ sync_fetch_and_xor_4 \
+ sync_fetch_and_nand_4 \
+ sync_fetch_and_max_4 \
+ sync_fetch_and_umax_4 \
+ sync_fetch_and_min_4 \
+ sync_fetch_and_umin_4 \
+ sync_fetch_and_add_8 \
+ sync_fetch_and_sub_8 \
+ sync_fetch_and_and_8 \
+ sync_fetch_and_or_8 \
+ sync_fetch_and_xor_8 \
+ sync_fetch_and_nand_8 \
+ sync_fetch_and_max_8 \
+ sync_fetch_and_umax_8 \
+ sync_fetch_and_min_8 \
+ sync_fetch_and_umin_8
+endif
+
+# Clear cache is builtin on aarch64-apple-ios
+# arm64 and aarch64 are synonims, but iOS targets usually use arm64 (history reasons)
+ifeq (aarch64-apple-ios,$(subst arm64,aarch64,$(TargetTriple)))
+CommonDisabledFunctions := clear_cache
+endif
+
+ArchEnabledFunctions := $(filter-out $(ArchDisabledFunctions),$(value ArchFunctions.$(Arch)))
+CommonEnabledFunctions := $(filter-out $(CommonDisabledFunctions),$(CommonFunctions_gcc))
+
+FUNCTIONS.builtins := $(CommonEnabledFunctions) $(ArchEnabledFunctions)