make/linux/makefiles/gcc.make
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*** old/make/linux/makefiles/gcc.make	Tue Jun  4 10:03:39 2013
--- new/make/linux/makefiles/gcc.make	Tue Jun  4 10:03:39 2013

*** 34,66 **** --- 34,132 ---- CC = $(ALT_COMPILER_PATH)/gcc HOSTCXX = g++ HOSTCC = gcc STRIP = $(ALT_COMPILER_PATH)/strip else + ifeq ($(USE_CLANG), true) + CXX = clang++ + CC = clang + else CXX = g++ CC = gcc + endif + HOSTCXX = $(CXX) HOSTCC = $(CC) STRIP = strip endif AS = $(CC) -c endif # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only ! # prints the numbers (e.g. "2.95", "3.2.1") ! CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) # check for precompiled headers support ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" # Allow the user to turn off precompiled headers from the command line. ifneq ($(USE_PRECOMPILED_HEADER),0) PRECOMPILED_HEADER_DIR=. PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch + ifeq ($(USE_CLANG), true) ! CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1) ! CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2) + else + # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only + # prints the numbers (e.g. "2.95", "3.2.1") + CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) + CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) + endif + + + ifeq ($(USE_CLANG), true) + # Clang has precompiled headers support by default, but the user can switch + # it off by using 'USE_PRECOMPILED_HEADER=0'. + ifdef LP64 + ifeq ($(USE_PRECOMPILED_HEADER),) + USE_PRECOMPILED_HEADER=1 + endif + else + # We don't support precompiled headers on 32-bit builds because there some files are + # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make) + # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit. + USE_PRECOMPILED_HEADER=0 + endif + + ifeq ($(USE_PRECOMPILED_HEADER),1) + + ifndef LP64 + $(error " Precompiled Headers only supported on 64-bit platforms!") + endif + + PRECOMPILED_HEADER_DIR=. + PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp + PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch + + PCH_FLAG = -include precompiled.hpp + PCH_FLAG/DEFAULT = $(PCH_FLAG) + PCH_FLAG/NO_PCH = -DNO_PCH + PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@)) + + VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE) + VM_PCH_FLAG/AOUT = + VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO)) + + # We only use precompiled headers for the JVM build + CFLAGS += $(VM_PCH_FLAG) + + # There are some files which don't like precompiled headers + # The following files are build with 'OPT_CFLAGS/NOOPT' (-O0) in the opt build. + # But Clang doesn't support a precompiled header which was compiled with -O3 + # to be used in a compilation unit which uses '-O0'. We could also prepare an + # extra '-O0' PCH file for the opt build and use it here, but it's probably + # not worth the effoert as long as only two files need this special handling. + PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH) + PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH) + PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH) + + endif + else # ($(USE_CLANG), true) + # check for precompiled headers support + ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" + # Allow the user to turn off precompiled headers from the command line. + ifneq ($(USE_PRECOMPILED_HEADER),0) + PRECOMPILED_HEADER_DIR=. + PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp + PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch + endif + endif endif + + # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. + ifeq ($(USE_PRECOMPILED_HEADER),0) + CFLAGS += -DDONT_USE_PRECOMPILED_HEADER endif #------------------------------------------------------------------------ # Compiler flags
*** 81,100 **** --- 147,180 ---- endif CFLAGS += $(VM_PICFLAG) CFLAGS += -fno-rtti CFLAGS += -fno-exceptions CFLAGS += -D_REENTRANT CFLAGS += -fcheck-new # version 4 and above support fvisibility=hidden (matches jni_x86.h file) ! # except 4.1.2 gives pointless warnings that can't be disabled (afaik) ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" CFLAGS += -fvisibility=hidden + ifeq ($(USE_CLANG),) + CFLAGS += -fcheck-new ! # version 4 and above support fvisibility=hidden (matches jni_x86.h file) + # except 4.1.2 gives pointless warnings that can't be disabled (afaik) + ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" + CFLAGS += -fvisibility=hidden + endif + else + CFLAGS += -fvisibility=hidden + endif + + ifeq ($(USE_CLANG), true) + # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm' + # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment') + ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0" + STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16 + else + STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16 + endif endif ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) ARCHFLAG/i486 = -m32 -march=i586 ! ARCHFLAG/amd64 = -m64 $(STACK_ALIGNMENT_OPT) ARCHFLAG/ia64 = ARCHFLAG/sparc = -m32 -mcpu=v9 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 ARCHFLAG/arm = -fsigned-char ARCHFLAG/zero = $(ZERO_ARCHFLAG)
*** 124,139 **** --- 204,229 ---- endif # Compiler warnings are treated as errors WARNINGS_ARE_ERRORS = -Werror + ifeq ($(USE_CLANG), true) + # However we need to clean the code up before we can unrestrictedly enable this option with Clang + WARNINGS_ARE_ERRORS += -Wno-unused-value -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses + WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare + WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess + WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body + endif + WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit # conversions which might affect the values. Only enable it in earlier versions. ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" WARNING_FLAGS += -Wconversion + ifeq ($(USE_CLANG),) + # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit + # conversions which might affect the values. Only enable it in earlier versions. + ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" + WARNING_FLAGS += -Wconversion + endif endif CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS) # Special cases CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
*** 163,211 **** --- 253,315 ---- OPT_CFLAGS += -fno-expensive-optimizations endif OPT_CFLAGS/NOOPT=-O0 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. ! ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0" OPT_CFLAGS/mulnode.o += -O0 + # Work around some compiler bugs. ! ifeq ($(USE_CLANG), true) + ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) + OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) + endif + else + # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. + ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) + OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) + endif endif # Flags for generating make dependency flags. ! ifneq ("${CC_VER_MAJOR}", "2") ! DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) endif # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. ifeq ($(USE_PRECOMPILED_HEADER),0) CFLAGS += -DDONT_USE_PRECOMPILED_HEADER ! DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) ! ifeq ($(USE_CLANG),) + ifneq ("${CC_VER_MAJOR}", "2") + DEPFLAGS += -fpch-deps + endif endif #------------------------------------------------------------------------ # Linker flags # statically link libstdc++.so, work with gcc but ignored by g++ STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. ifneq ("${CC_VER_MAJOR}", "2") STATIC_LIBGCC += -static-libgcc endif + ifeq ($(USE_CLANG),) + # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. + ifneq ("${CC_VER_MAJOR}", "2") + STATIC_LIBGCC += -static-libgcc + endif ! ifeq ($(BUILDARCH), ia64) ! LFLAGS += -Wl,-relax ! LFLAGS += -Wl,-relax + endif endif # Enable linker optimization LFLAGS += -Xlinker -O1 # If this is a --hash-style=gnu system, use --hash-style=both # The gnu .hash section won't work on some Linux systems like SuSE 10. _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu') ! ifneq ($(_HAS_HASH_STYLE_GNU),) + ifeq ($(USE_CLANG),) + # If this is a --hash-style=gnu system, use --hash-style=both + # The gnu .hash section won't work on some Linux systems like SuSE 10. ! _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu') + ifneq ($(_HAS_HASH_STYLE_GNU),) + LDFLAGS_HASH_STYLE = -Wl,--hash-style=both + endif + else + # Don't know how to find out the 'hash style' of a system as '-dumpspecs' + # doesn't work for Clang. So for now we'll alwys use --hash-style=both LDFLAGS_HASH_STYLE = -Wl,--hash-style=both endif + LFLAGS += $(LDFLAGS_HASH_STYLE) # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. MAPFLAG = -Xlinker --version-script=FILENAME
*** 219,228 **** --- 323,339 ---- AOUT_FLAGS += -Xlinker -export-dynamic #------------------------------------------------------------------------ # Debug flags + ifeq ($(USE_CLANG), true) + # Restrict the debug information created by Clang to avoid + # too big object files and speed the build up a little bit + # (see http://llvm.org/bugs/show_bug.cgi?id=7554) + CFLAGS += -flimit-debug-info + endif + # DEBUG_BINARIES uses full -g debug information for all configs ifeq ($(DEBUG_BINARIES), true) CFLAGS += -g else # Use the stabs format for debugging information (this is the default
*** 235,266 **** --- 346,392 ---- DEBUG_CFLAGS/amd64 = -g DEBUG_CFLAGS/arm = -g DEBUG_CFLAGS/ppc = -g DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) DEBUG_CFLAGS += -gstabs + ifeq ($(USE_CLANG), true) + # Clang doesn't understand -gstabs + OPT_CFLAGS += -g + else + OPT_CFLAGS += -gstabs + endif endif ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) FASTDEBUG_CFLAGS/ia64 = -g FASTDEBUG_CFLAGS/amd64 = -g FASTDEBUG_CFLAGS/arm = -g FASTDEBUG_CFLAGS/ppc = -g FASTDEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),) FASTDEBUG_CFLAGS += -gstabs + ifeq ($(USE_CLANG), true) + # Clang doesn't understand -gstabs + OPT_CFLAGS += -g + else + OPT_CFLAGS += -gstabs + endif endif OPT_CFLAGS/ia64 = -g OPT_CFLAGS/amd64 = -g OPT_CFLAGS/arm = -g OPT_CFLAGS/ppc = -g OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH)) ifeq ($(OPT_CFLAGS/$(BUILDARCH)),) + ifeq ($(USE_CLANG), true) + # Clang doesn't understand -gstabs + OPT_CFLAGS += -g + else OPT_CFLAGS += -gstabs endif endif + endif endif # If we are building HEADLESS, pass on to VM # so it can set the java.awt.headless property ifdef HEADLESS

make/linux/makefiles/gcc.make
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