folkert/simh-testsetgenerator
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Added makefile support to use the LLVM (clang) compiler on OSX and other platforms where it may be available (Linux, *BSD, etc.)

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This commit is contained in:
Mark Pizzolato 2012-04-29 12:39:25 -07:00
parent 0f8e6cfe95
commit d4e1cac0ea
1 changed files with 24 additions and 11 deletions
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25
makefile
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@ -23,6 +23,10 @@
# If debugging is desired, then GNU make can be invoked with
# DEBUG=1 on the command line.
#
# OSX and other environments may have the LLVM (clang) compiler
# installed. If you want to build with the clang compiler, invoke
# make with GCC=clang.
#
# Internal ROM support can be disabled if GNU make is invoked with
# DONT_USE_ROMS=1 on the command line.
#
@ -66,8 +70,17 @@ ifeq ($(WIN32),) #*nix Environments (&& cygwin)
OSTYPE = cygwin
OSNAME = windows-build
endif
ifeq (,$(shell $(GCC) -v /dev/null 2>&1 | grep 'clang version'))
GCC_VERSION = $(shell $(GCC) -v /dev/null 2>&1 | grep 'gcc version' | awk '{ print $$3 }')
COMPILER_NAME = GCC Version: $(GCC_VERSION)
else
COMPILER_NAME = $(shell $(GCC) -v /dev/null 2>&1 | grep 'clang version' | awk '{ print $$1 " " $$2 " " $$3 }')
CLANG_VERSION = $(word 3,$(COMPILER_NAME))
ifeq (,$(findstring .,$(CLANG_VERSION)))
COMPILER_NAME = $(shell $(GCC) -v /dev/null 2>&1 | grep 'clang version' | awk '{ print $$1 " " $$2 " " $$3 " " $$4 }')
CLANG_VERSION = $(word 4,$(COMPILER_NAME))
endif
endif
LTO_EXCLUDE_VERSIONS =
PCAPLIB = pcap
ifeq (agcc,$(findstring agcc,$(GCC))) # Android target build?
@ -86,14 +99,10 @@ ifeq ($(WIN32),) #*nix Environments (&& cygwin)
OSNAME = OSX
LIBEXT = dylib
# OSX's XCode gcc doesn't support LTO, but gcc built to explicitly enable it will work
ifneq (,$(GCC_VERSION))
ifeq (,$(shell $(GCC) -v /dev/null 2>&1 | grep '\-\-enable-lto'))
LTO_EXCLUDE_VERSIONS += $(GCC_VERSION)
endif
# OSX's clang compiler has different means of determining options than gcc
# gccm so hard set options here
ifneq (,$(shell $(GCC) -v /dev/null 2>&1 | grep 'clang version'))
COMPILER_NAME = Apple clang version $(shell $(GCC) -v /dev/null 2>&1 | grep 'clang version' | awk '{ print $$4 }')
CFLAGS_O = -Wno-comment -Wno-parentheses
endif
else
ifeq (Linux,$(OSTYPE))
@ -314,7 +323,11 @@ else
ifneq (clang,$(findstring clang,$(COMPILER_NAME)))
CFLAGS_O = -O2
else
CFLAGS_O := -O4 $(CFLAGS_O) -fno-strict-overflow -flto -fwhole-program
ifeq (Darwin,$(OSTYPE))
CFLAGS_O += -O4 -fno-strict-overflow -flto -fwhole-program
else
CFLAGS_O := -O2 -fno-strict-overflow
endif
endif
LDFLAGS_O =
GCC_MAJOR_VERSION = $(firstword $(subst ., ,$(GCC_VERSION)))