rust: Silence -fPIC warnings on Windows

Based on 44f2671 (vadimcn)

Author: angelsl

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