hotspot/make/bsd/makefiles/gcc.make - edge/openjdk - Git at Google

 #
 # Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
 # published by the Free Software Foundation.
 #
 # This code is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 # version 2 for more details (a copy is included in the LICENSE file that
 # accompanied this code).
 #
 # You should have received a copy of the GNU General Public License version
 # 2 along with this work; if not, write to the Free Software Foundation,
 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 #
 #

 OS_VENDOR = $(shell uname -s)

 #------------------------------------------------------------------------
 # CC, CXX & AS

 # If a SPEC is not set already, then use these defaults.
 ifeq ($(SPEC),)
   # When cross-compiling the ALT_COMPILER_PATH points
   # to the cross-compilation toolset
   ifdef CROSS_COMPILE_ARCH
     CXX = $(ALT_COMPILER_PATH)/g++
     CC  = $(ALT_COMPILER_PATH)/gcc
     HOSTCXX = g++
     HOSTCC  = gcc
   else ifneq ($(OS_VENDOR), Darwin)
     CXX = g++
     CC  = gcc
     HOSTCXX = $(CXX)
     HOSTCC  = $(CC)
   endif

   # i486 hotspot requires -mstackrealign on Darwin.
   # llvm-gcc supports this in Xcode 3.2.6 and 4.0.
   # gcc-4.0 supports this on earlier versions.
   # Prefer llvm-gcc where available.
   ifeq ($(OS_VENDOR), Darwin)
     ifeq ($(origin CXX), default)
       CXX = llvm-g++
     endif
     ifeq ($(origin CC), default)
       CC  = llvm-gcc
     endif

     ifeq ($(ARCH), i486)
       LLVM_SUPPORTS_STACKREALIGN := $(shell \
        [ "0"`llvm-gcc -v 2>&1 | grep LLVM | sed -E "s/.*LLVM build ([0-9]+).*/\1/"` -gt "2333" ] \
        && echo true || echo false)

       ifeq ($(LLVM_SUPPORTS_STACKREALIGN), true)
         CXX32 ?= llvm-g++
         CC32  ?= llvm-gcc
       else
         CXX32 ?= g++-4.0
         CC32  ?= gcc-4.0
       endif
       CXX = $(CXX32)
       CC  = $(CC32)
     endif

     ifeq ($(USE_CLANG), true)
       CXX = clang++
       CC  = clang
     endif

     HOSTCXX = $(CXX)
     HOSTCC  = $(CC)
   endif

   AS   = $(CC) -c
 endif

 ifeq ($(OS_VENDOR), Darwin)
   ifeq ($(DSYMUTIL),)
     DSYMUTIL=dsymutil
   endif
 endif

 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)

     # The following files are compiled at various optimization
     # levels due to optimization issues encountered at the
     # 'OPT_CFLAGS_DEFAULT' level. The Clang compiler issues a compile
     # time error if there is an optimization level specification
     # skew between the PCH file and the C++ file.  Especially if the
     # PCH file is compiled at a higher optimization level than
     # the C++ file.  One solution might be to prepare extra optimization
     # level specific PCH files for the opt build and use them here, but
     # it's probably not worth the effort as long as only a few 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)
     PCH_FLAG/unsafe.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

 # position-independent code
 PICFLAG = -fPIC

 VM_PICFLAG/LIBJVM = $(PICFLAG)
 VM_PICFLAG/AOUT   =
 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

 ifeq ($(JVM_VARIANT_ZERO), true)
   CFLAGS += $(LIBFFI_CFLAGS)
 endif
 ifeq ($(JVM_VARIANT_ZEROSHARK), true)
   CFLAGS += $(LIBFFI_CFLAGS)
   CFLAGS += $(LLVM_CFLAGS)
 endif
 CFLAGS += $(VM_PICFLAG)
 CFLAGS += -fno-rtti
 CFLAGS += -fno-exceptions
 ifeq ($(USE_CLANG),)
   CFLAGS += -pthread
   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/zero    = $(ZERO_ARCHFLAG)

 # Darwin-specific build flags
 ifeq ($(OS_VENDOR), Darwin)
   # Ineffecient 16-byte stack re-alignment on Darwin/IA32
   ARCHFLAG/i486 += -mstackrealign
 endif

 CFLAGS     += $(ARCHFLAG)
 AOUT_FLAGS += $(ARCHFLAG)
 LFLAGS     += $(ARCHFLAG)
 ASFLAGS    += $(ARCHFLAG)

 ifdef E500V2
 CFLAGS += -DE500V2
 endif

 # Use C++ Interpreter
 ifdef CC_INTERP
   CFLAGS += -DCC_INTERP
 endif

 # Keep temporary files (.ii, .s)
 ifdef NEED_ASM
   CFLAGS += -save-temps
 else
   CFLAGS += -pipe
 endif

 # Compiler warnings are treated as errors
 ifneq ($(COMPILER_WARNINGS_FATAL),false)
   WARNINGS_ARE_ERRORS = -Werror
 endif

 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-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses
   WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-compare
 # Not yet supported by clang in Xcode 4.6.2
 #  WARNINGS_ARE_ERRORS += -Wno-tautological-constant-out-of-range-compare
   WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess
   WARNINGS_ARE_ERRORS += -Wno-empty-body
 endif

 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef

 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
   # 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.
   WARNING_FLAGS = -Wunused-function
   ifeq ($(USE_CLANG),)
     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/$@))
 # XXXDARWIN: for _dyld_bind_fully_image_containing_address
 ifeq ($(OS_VENDOR), Darwin)
   CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
 endif

 OPT_CFLAGS/SIZE=-Os
 OPT_CFLAGS/SPEED=-O3

 # Hotspot uses very unstrict aliasing turn this optimization off
 # This option is added to CFLAGS rather than OPT_CFLAGS
 # so that OPT_CFLAGS overrides get this option too.
 CFLAGS += -fno-strict-aliasing

 # The flags to use for an Optimized g++ build
 ifeq ($(OS_VENDOR), Darwin)
   # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
   # <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers>
   OPT_CFLAGS_DEFAULT ?= SIZE
 else
   OPT_CFLAGS_DEFAULT ?= SPEED
 endif

 ifdef OPT_CFLAGS
   ifneq ("$(origin OPT_CFLAGS)", "command line")
     $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")
   endif
 endif

 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)

 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
 # if we use expensive-optimizations
 ifeq ($(BUILDARCH), ia64)
 OPT_CFLAGS += -fno-expensive-optimizations
 endif

 OPT_CFLAGS/NOOPT=-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 += $(OPT_CFLAGS/NOOPT)
     OPT_CFLAGS/unsafe.o += -O1
   endif
 else
   # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.
   ifeq ($(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.
 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
 ifeq ($(USE_CLANG),)
   ifneq ($(CC_VER_MAJOR), 2)
     DEPFLAGS += -fpch-deps
   endif
 endif

 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
 ifeq ($(USE_PRECOMPILED_HEADER),0)
 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
 endif

 ifeq ($(OS_VENDOR), Darwin)
   # Setting these parameters makes it an error to link to macosx APIs that are
   # newer than the given OS version and makes the linked binaries compatible even
   # if built on a newer version of the OS.
   # The expected format is X.Y.Z
   ifeq ($(MACOSX_VERSION_MIN),)
     MACOSX_VERSION_MIN=10.7.0
   endif
   # The macro takes the version with no dots, ex: 1070
   CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \
             -mmacosx-version-min=$(MACOSX_VERSION_MIN)
   LFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
 endif


 #------------------------------------------------------------------------
 # Assembler flags

 # Enforce prerpocessing of .s files
 ASFLAGS += -x assembler-with-cpp

 #------------------------------------------------------------------------
 # Linker flags

 # statically link libstdc++.so, work with gcc but ignored by g++
 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic

 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
   endif
 endif

 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
 MAPFLAG = -Xlinker --version-script=FILENAME

 #
 # Shared Library
 #
 ifeq ($(OS_VENDOR), Darwin)
   # Standard linker flags
   LFLAGS +=

   # The apple linker has its own variant of mapfiles/version-scripts
   MAPFLAG = -Xlinker -exported_symbols_list -Xlinker FILENAME

   # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
   SONAMEFLAG =

   # Build shared library
   SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG)

   # Keep symbols even they are not used
   #AOUT_FLAGS += -Xlinker -export-dynamic
 else
   # Enable linker optimization
   LFLAGS += -Xlinker -O1

   # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
   SONAMEFLAG = -Xlinker -soname=SONAME

   # Build shared library
   SHARED_FLAG = -shared $(VM_PICFLAG)

   # Keep symbols even they are not used
   AOUT_FLAGS += -Xlinker -export-dynamic
 endif

 #------------------------------------------------------------------------
 # 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
   # on gcc-2.91). It's good enough, has all the information about line
   # numbers and local variables, and libjvm.so is only about 16M.
   # Change this back to "-g" if you want the most expressive format.
   # (warning: that could easily inflate libjvm.so to 150M!)
   # Note: The Itanium gcc compiler crashes when using -gstabs.
   DEBUG_CFLAGS/ia64  = -g
   DEBUG_CFLAGS/amd64 = -g
   DEBUG_CFLAGS/arm   = -g
   DEBUG_CFLAGS/ppc   = -g
   DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
   ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
   DEBUG_CFLAGS += -gstabs
   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 += $(FASTDEBUG_CFLAGS/$(BUILDARCH))
     ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),)
       ifeq ($(USE_CLANG), true)
         # Clang doesn't understand -gstabs
         FASTDEBUG_CFLAGS += -g
       else
         FASTDEBUG_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
 CFLAGS += -DHEADLESS
 endif

 # We are building Embedded for a small device
 # favor code space over speed
 ifdef MINIMIZE_RAM_USAGE
 CFLAGS += -DMINIMIZE_RAM_USAGE
 endif
	#
	# Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
	# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	#
	# This code is free software; you can redistribute it and/or modify it
	# under the terms of the GNU General Public License version 2 only, as
	# published by the Free Software Foundation.
	#
	# This code is distributed in the hope that it will be useful, but WITHOUT
	# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	# version 2 for more details (a copy is included in the LICENSE file that
	# accompanied this code).
	#
	# You should have received a copy of the GNU General Public License version
	# 2 along with this work; if not, write to the Free Software Foundation,
	# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	#
	# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	# or visit www.oracle.com if you need additional information or have any
	# questions.
	#
	#

	OS_VENDOR = $(shell uname -s)

	#------------------------------------------------------------------------
	# CC, CXX & AS

	# If a SPEC is not set already, then use these defaults.
	ifeq ($(SPEC),)
	# When cross-compiling the ALT_COMPILER_PATH points
	# to the cross-compilation toolset
	ifdef CROSS_COMPILE_ARCH
	CXX = $(ALT_COMPILER_PATH)/g++
	CC = $(ALT_COMPILER_PATH)/gcc
	HOSTCXX = g++
	HOSTCC = gcc
	else ifneq ($(OS_VENDOR), Darwin)
	CXX = g++
	CC = gcc
	HOSTCXX = $(CXX)
	HOSTCC = $(CC)
	endif

	# i486 hotspot requires -mstackrealign on Darwin.
	# llvm-gcc supports this in Xcode 3.2.6 and 4.0.
	# gcc-4.0 supports this on earlier versions.
	# Prefer llvm-gcc where available.
	ifeq ($(OS_VENDOR), Darwin)
	ifeq ($(origin CXX), default)
	CXX = llvm-g++
	endif
	ifeq ($(origin CC), default)
	CC = llvm-gcc
	endif

	ifeq ($(ARCH), i486)
	LLVM_SUPPORTS_STACKREALIGN := $(shell \
	[ "0"`llvm-gcc -v 2>&1 \| grep LLVM \| sed -E "s/.LLVM build ([0-9]+)./\1/"` -gt "2333" ] \
	&& echo true \|\| echo false)

	ifeq ($(LLVM_SUPPORTS_STACKREALIGN), true)
	CXX32 ?= llvm-g++
	CC32 ?= llvm-gcc
	else
	CXX32 ?= g++-4.0
	CC32 ?= gcc-4.0
	endif
	CXX = $(CXX32)
	CC = $(CC32)
	endif

	ifeq ($(USE_CLANG), true)
	CXX = clang++
	CC = clang
	endif

	HOSTCXX = $(CXX)
	HOSTCC = $(CC)
	endif

	AS = $(CC) -c
	endif

	ifeq ($(OS_VENDOR), Darwin)
	ifeq ($(DSYMUTIL),)
	DSYMUTIL=dsymutil
	endif
	endif

	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)

	# The following files are compiled at various optimization
	# levels due to optimization issues encountered at the
	# 'OPT_CFLAGS_DEFAULT' level. The Clang compiler issues a compile
	# time error if there is an optimization level specification
	# skew between the PCH file and the C++ file. Especially if the
	# PCH file is compiled at a higher optimization level than
	# the C++ file. One solution might be to prepare extra optimization
	# level specific PCH files for the opt build and use them here, but
	# it's probably not worth the effort as long as only a few 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)
	PCH_FLAG/unsafe.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

	# position-independent code
	PICFLAG = -fPIC

	VM_PICFLAG/LIBJVM = $(PICFLAG)
	VM_PICFLAG/AOUT =
	VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO))

	ifeq ($(JVM_VARIANT_ZERO), true)
	CFLAGS += $(LIBFFI_CFLAGS)
	endif
	ifeq ($(JVM_VARIANT_ZEROSHARK), true)
	CFLAGS += $(LIBFFI_CFLAGS)
	CFLAGS += $(LLVM_CFLAGS)
	endif
	CFLAGS += $(VM_PICFLAG)
	CFLAGS += -fno-rtti
	CFLAGS += -fno-exceptions
	ifeq ($(USE_CLANG),)
	CFLAGS += -pthread
	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/zero = $(ZERO_ARCHFLAG)

	# Darwin-specific build flags
	ifeq ($(OS_VENDOR), Darwin)
	# Ineffecient 16-byte stack re-alignment on Darwin/IA32
	ARCHFLAG/i486 += -mstackrealign
	endif

	CFLAGS += $(ARCHFLAG)
	AOUT_FLAGS += $(ARCHFLAG)
	LFLAGS += $(ARCHFLAG)
	ASFLAGS += $(ARCHFLAG)

	ifdef E500V2
	CFLAGS += -DE500V2
	endif

	# Use C++ Interpreter
	ifdef CC_INTERP
	CFLAGS += -DCC_INTERP
	endif

	# Keep temporary files (.ii, .s)
	ifdef NEED_ASM
	CFLAGS += -save-temps
	else
	CFLAGS += -pipe
	endif

	# Compiler warnings are treated as errors
	ifneq ($(COMPILER_WARNINGS_FATAL),false)
	WARNINGS_ARE_ERRORS = -Werror
	endif

	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-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses
	WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-compare
	# Not yet supported by clang in Xcode 4.6.2
	# WARNINGS_ARE_ERRORS += -Wno-tautological-constant-out-of-range-compare
	WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess
	WARNINGS_ARE_ERRORS += -Wno-empty-body
	endif

	WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef

	ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \\| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
	# 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.
	WARNING_FLAGS = -Wunused-function
	ifeq ($(USE_CLANG),)
	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/$@))
	# XXXDARWIN: for _dyld_bind_fully_image_containing_address
	ifeq ($(OS_VENDOR), Darwin)
	CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
	endif

	OPT_CFLAGS/SIZE=-Os
	OPT_CFLAGS/SPEED=-O3

	# Hotspot uses very unstrict aliasing turn this optimization off
	# This option is added to CFLAGS rather than OPT_CFLAGS
	# so that OPT_CFLAGS overrides get this option too.
	CFLAGS += -fno-strict-aliasing

	# The flags to use for an Optimized g++ build
	ifeq ($(OS_VENDOR), Darwin)
	# use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
	# <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers>
	OPT_CFLAGS_DEFAULT ?= SIZE
	else
	OPT_CFLAGS_DEFAULT ?= SPEED
	endif

	ifdef OPT_CFLAGS
	ifneq ("$(origin OPT_CFLAGS)", "command line")
	$(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")
	endif
	endif

	OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)

	# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
	# if we use expensive-optimizations
	ifeq ($(BUILDARCH), ia64)
	OPT_CFLAGS += -fno-expensive-optimizations
	endif

	OPT_CFLAGS/NOOPT=-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 += $(OPT_CFLAGS/NOOPT)
	OPT_CFLAGS/unsafe.o += -O1
	endif
	else
	# 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.
	ifeq ($(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.
	DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
	ifeq ($(USE_CLANG),)
	ifneq ($(CC_VER_MAJOR), 2)
	DEPFLAGS += -fpch-deps
	endif
	endif

	# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
	ifeq ($(USE_PRECOMPILED_HEADER),0)
	CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
	endif

	ifeq ($(OS_VENDOR), Darwin)
	# Setting these parameters makes it an error to link to macosx APIs that are
	# newer than the given OS version and makes the linked binaries compatible even
	# if built on a newer version of the OS.
	# The expected format is X.Y.Z
	ifeq ($(MACOSX_VERSION_MIN),)
	MACOSX_VERSION_MIN=10.7.0
	endif
	# The macro takes the version with no dots, ex: 1070
	CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \
	-mmacosx-version-min=$(MACOSX_VERSION_MIN)
	LFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
	endif


	#------------------------------------------------------------------------
	# Assembler flags

	# Enforce prerpocessing of .s files
	ASFLAGS += -x assembler-with-cpp

	#------------------------------------------------------------------------
	# Linker flags

	# statically link libstdc++.so, work with gcc but ignored by g++
	STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic

	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
	endif
	endif

	# Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
	MAPFLAG = -Xlinker --version-script=FILENAME

	#
	# Shared Library
	#
	ifeq ($(OS_VENDOR), Darwin)
	# Standard linker flags
	LFLAGS +=

	# The apple linker has its own variant of mapfiles/version-scripts
	MAPFLAG = -Xlinker -exported_symbols_list -Xlinker FILENAME

	# Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
	SONAMEFLAG =

	# Build shared library
	SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG)

	# Keep symbols even they are not used
	#AOUT_FLAGS += -Xlinker -export-dynamic
	else
	# Enable linker optimization
	LFLAGS += -Xlinker -O1

	# Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
	SONAMEFLAG = -Xlinker -soname=SONAME

	# Build shared library
	SHARED_FLAG = -shared $(VM_PICFLAG)

	# Keep symbols even they are not used
	AOUT_FLAGS += -Xlinker -export-dynamic
	endif

	#------------------------------------------------------------------------
	# 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
	# on gcc-2.91). It's good enough, has all the information about line
	# numbers and local variables, and libjvm.so is only about 16M.
	# Change this back to "-g" if you want the most expressive format.
	# (warning: that could easily inflate libjvm.so to 150M!)
	# Note: The Itanium gcc compiler crashes when using -gstabs.
	DEBUG_CFLAGS/ia64 = -g
	DEBUG_CFLAGS/amd64 = -g
	DEBUG_CFLAGS/arm = -g
	DEBUG_CFLAGS/ppc = -g
	DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
	ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
	DEBUG_CFLAGS += -gstabs
	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 += $(FASTDEBUG_CFLAGS/$(BUILDARCH))
	ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),)
	ifeq ($(USE_CLANG), true)
	# Clang doesn't understand -gstabs
	FASTDEBUG_CFLAGS += -g
	else
	FASTDEBUG_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
	CFLAGS += -DHEADLESS
	endif

	# We are building Embedded for a small device
	# favor code space over speed
	ifdef MINIMIZE_RAM_USAGE
	CFLAGS += -DMINIMIZE_RAM_USAGE
	endif