hotspot/make/bsd/makefiles/gcc.make
author erikj
Mon, 19 Mar 2012 10:09:24 +0100
changeset 12156 fb31de03f649
parent 11955 aeca8151886e
child 12943 5ebbcf0cb20f
permissions -rw-r--r--
7141246: build-infra merge: Introduce new JVM_VARIANT* to control which kind of jvm gets built Reviewed-by: dholmes, ohair
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#
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# Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#  
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#
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OS_VENDOR = $(shell uname -s)
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#------------------------------------------------------------------------
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# CC, CXX & AS
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# If a SPEC is not set already, then use these defaults.
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ifeq ($(SPEC),)
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  # When cross-compiling the ALT_COMPILER_PATH points
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  # to the cross-compilation toolset
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  ifdef CROSS_COMPILE_ARCH
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    CXX = $(ALT_COMPILER_PATH)/g++
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    CC  = $(ALT_COMPILER_PATH)/gcc
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    HOSTCXX = g++
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    HOSTCC  = gcc
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  else ifneq ($(OS_VENDOR), Darwin)
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    CXX = g++
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    CC  = gcc
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    HOSTCXX = $(CXX)
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    HOSTCC  = $(CC)
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  endif
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  # i486 hotspot requires -mstackrealign on Darwin.
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  # llvm-gcc supports this in Xcode 3.2.6 and 4.0.
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  # gcc-4.0 supports this on earlier versions.
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  # Prefer llvm-gcc where available.
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  ifeq ($(OS_VENDOR), Darwin)
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    ifeq ($(origin CXX), default)
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      CXX = llvm-g++
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    endif
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    ifeq ($(origin CC), default)
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      CC  = llvm-gcc
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    endif
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    ifeq ($(ARCH), i486)
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      LLVM_SUPPORTS_STACKREALIGN := $(shell \
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       [ "0"`llvm-gcc -v 2>&1 | grep LLVM | sed -E "s/.*LLVM build ([0-9]+).*/\1/"` -gt "2333" ] \
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       && echo true || echo false)
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      ifeq ($(LLVM_SUPPORTS_STACKREALIGN), true)
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        CXX32 ?= llvm-g++
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        CC32  ?= llvm-gcc
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      else
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        CXX32 ?= g++-4.0
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        CC32  ?= gcc-4.0
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      endif
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      CXX = $(CXX32)
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      CC  = $(CC32)
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    endif
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    HOSTCXX = $(CXX)
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    HOSTCC  = $(CC)
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  endif
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  AS   = $(CC) -c -x assembler-with-cpp
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endif
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# -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
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# prints the numbers (e.g. "2.95", "3.2.1")
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CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
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CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
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# check for precompiled headers support
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ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
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# Allow the user to turn off precompiled headers from the command line.
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ifneq ($(USE_PRECOMPILED_HEADER),0)
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PRECOMPILED_HEADER_DIR=.
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PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
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PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
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endif
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endif
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#------------------------------------------------------------------------
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# Compiler flags
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# position-independent code
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PICFLAG = -fPIC
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VM_PICFLAG/LIBJVM = $(PICFLAG)
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VM_PICFLAG/AOUT   =
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VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
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ifeq ($(JVM_VARIANT_ZERO), true)
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  CFLAGS += $(LIBFFI_CFLAGS)
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endif
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ifeq ($(JVM_VARIANT_ZEROSHARK), true)
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  CFLAGS += $(LIBFFI_CFLAGS)
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  CFLAGS += $(LLVM_CFLAGS)
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endif
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CFLAGS += $(VM_PICFLAG)
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CFLAGS += -fno-rtti
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CFLAGS += -fno-exceptions
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CFLAGS += -pthread
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CFLAGS += -fcheck-new
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# version 4 and above support fvisibility=hidden (matches jni_x86.h file)
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# except 4.1.2 gives pointless warnings that can't be disabled (afaik)
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ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
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CFLAGS += -fvisibility=hidden
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endif
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ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
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ARCHFLAG/i486    = -m32 -march=i586
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ARCHFLAG/amd64   = -m64
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ARCHFLAG/ia64    =
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ARCHFLAG/sparc   = -m32 -mcpu=v9
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ARCHFLAG/sparcv9 = -m64 -mcpu=v9
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ARCHFLAG/zero    = $(ZERO_ARCHFLAG)
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# Darwin-specific build flags
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ifeq ($(OS_VENDOR), Darwin)
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  # Ineffecient 16-byte stack re-alignment on Darwin/IA32
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  ARCHFLAG/i486 += -mstackrealign
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endif
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CFLAGS     += $(ARCHFLAG)
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AOUT_FLAGS += $(ARCHFLAG)
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LFLAGS     += $(ARCHFLAG)
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ASFLAGS    += $(ARCHFLAG)
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ifdef E500V2
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CFLAGS += -DE500V2
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endif
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# Use C++ Interpreter
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ifdef CC_INTERP
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  CFLAGS += -DCC_INTERP
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endif
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# Build for embedded targets
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ifdef JAVASE_EMBEDDED
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  CFLAGS += -DJAVASE_EMBEDDED
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endif
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# Keep temporary files (.ii, .s)
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ifdef NEED_ASM
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  CFLAGS += -save-temps
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else
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  CFLAGS += -pipe
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endif
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# Compiler warnings are treated as errors
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ifneq ($(COMPILER_WARNINGS_FATAL),false)
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  WARNINGS_ARE_ERRORS = -Werror
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endif
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# Except for a few acceptable ones
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# Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
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# conversions which might affect the values. To avoid that, we need to turn
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# it off explicitly. 
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ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
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ACCEPTABLE_WARNINGS = -Wpointer-arith -Wsign-compare
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else
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ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
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endif
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CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)
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# Special cases
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CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 
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# XXXDARWIN: for _dyld_bind_fully_image_containing_address
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ifeq ($(OS_VENDOR), Darwin)
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  CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
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endif
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# The flags to use for an Optimized g++ build
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ifeq ($(OS_VENDOR), Darwin)
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  # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
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  # <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers>
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  OPT_CFLAGS += -Os
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else
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  OPT_CFLAGS += -O3
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endif
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# Hotspot uses very unstrict aliasing turn this optimization off
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OPT_CFLAGS += -fno-strict-aliasing
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# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 
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# if we use expensive-optimizations
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ifeq ($(BUILDARCH), ia64)
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OPT_CFLAGS += -fno-expensive-optimizations
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endif
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OPT_CFLAGS/NOOPT=-O0
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# 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 
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ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0"
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OPT_CFLAGS/mulnode.o += -O0
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endif
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# Flags for generating make dependency flags.
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ifneq ("${CC_VER_MAJOR}", "2")
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DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
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endif
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# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
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ifeq ($(USE_PRECOMPILED_HEADER),0)
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CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
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endif
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#------------------------------------------------------------------------
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# Linker flags
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# statically link libstdc++.so, work with gcc but ignored by g++
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STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
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# statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
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ifneq ("${CC_VER_MAJOR}", "2")
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STATIC_LIBGCC += -static-libgcc
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endif
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ifeq ($(BUILDARCH), ia64)
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LFLAGS += -Wl,-relax
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endif
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# Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
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MAPFLAG = -Xlinker --version-script=FILENAME
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#
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# Shared Library
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#
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ifeq ($(OS_VENDOR), Darwin)
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  # Standard linker flags
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  LFLAGS +=
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  # Darwin doesn't use ELF and doesn't support version scripts
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  LDNOMAP = true
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  # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
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  SONAMEFLAG =
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  # Build shared library
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  SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG)
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  # Keep symbols even they are not used
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  #AOUT_FLAGS += -Xlinker -export-dynamic
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else
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  # Enable linker optimization
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  LFLAGS += -Xlinker -O1
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  # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
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  SONAMEFLAG = -Xlinker -soname=SONAME
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  # Build shared library
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  SHARED_FLAG = -shared $(VM_PICFLAG)
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  # Keep symbols even they are not used
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  AOUT_FLAGS += -Xlinker -export-dynamic
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endif
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#------------------------------------------------------------------------
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# Debug flags
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# Use the stabs format for debugging information (this is the default
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# on gcc-2.91). It's good enough, has all the information about line
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# numbers and local variables, and libjvm_g.so is only about 16M.
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# Change this back to "-g" if you want the most expressive format.
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# (warning: that could easily inflate libjvm_g.so to 150M!)
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# Note: The Itanium gcc compiler crashes when using -gstabs.
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DEBUG_CFLAGS/ia64  = -g
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DEBUG_CFLAGS/amd64 = -g
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DEBUG_CFLAGS/arm   = -g
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DEBUG_CFLAGS/ppc   = -g
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DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
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ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
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DEBUG_CFLAGS += -gstabs
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endif
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# DEBUG_BINARIES overrides everything, use full -g debug information
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ifeq ($(DEBUG_BINARIES), true)
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  DEBUG_CFLAGS = -g
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  CFLAGS += $(DEBUG_CFLAGS)
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endif
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# If we are building HEADLESS, pass on to VM
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# so it can set the java.awt.headless property
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ifdef HEADLESS
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CFLAGS += -DHEADLESS
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endif
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# We are building Embedded for a small device
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# favor code space over speed
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ifdef MINIMIZE_RAM_USAGE
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CFLAGS += -DMINIMIZE_RAM_USAGE
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endif