hotspot/make/bsd/makefiles/gcc.make
author dholmes
Wed, 19 Jun 2013 13:14:03 -0700
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child 19336 ddceb0657500
permissions -rw-r--r--
8014326: [OSX] All libjvm symbols are exported Summary: Add support for a MacOS X compatible form of the libjvm mapfile. Reviewed-by: dcubed, rdurbin, coleenp
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#
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# Copyright (c) 1999, 2013, 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  = $(CC32)
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    endif
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    ifeq ($(USE_CLANG), true)
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      CXX = clang++
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      CC  = clang
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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   = $(CC) -c -x assembler-with-cpp
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endif
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ifeq ($(USE_CLANG), true)
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  CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1)
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  CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2)
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else
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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 $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
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endif
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ifeq ($(USE_CLANG), true)
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  # clang has precompiled headers support by default, but the user can switch
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  # it off by using 'USE_PRECOMPILED_HEADER=0'.
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  ifdef LP64
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    ifeq ($(USE_PRECOMPILED_HEADER),)
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      USE_PRECOMPILED_HEADER=1
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    endif
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  else
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    # We don't support precompiled headers on 32-bit builds because there some files are
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    # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make)
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    # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit.
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    USE_PRECOMPILED_HEADER=0
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  endif
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  ifeq ($(USE_PRECOMPILED_HEADER),1)
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    ifndef LP64
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      $(error " Precompiled Headers only supported on 64-bit platforms!")
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    endif
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    PRECOMPILED_HEADER_DIR=.
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    PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
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    PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch
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    PCH_FLAG = -include precompiled.hpp
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    PCH_FLAG/DEFAULT = $(PCH_FLAG)
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    PCH_FLAG/NO_PCH = -DNO_PCH
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    PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@))
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    VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE)
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    VM_PCH_FLAG/AOUT =
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    VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO))
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    # We only use precompiled headers for the JVM build
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    CFLAGS += $(VM_PCH_FLAG)
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    # There are some files which don't like precompiled headers
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    # The following files are build with 'OPT_CFLAGS/NOOPT' (-O0) in the opt build.
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    # But Clang doesn't support a precompiled header which was compiled with -O3
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    # to be used in a compilation unit which uses '-O0'. We could also prepare an
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    # extra '-O0' PCH file for the opt build and use it here, but it's probably
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    # not worth the effort as long as only two files need this special handling.
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    PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH)
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    PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH)
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    PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH)
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  endif
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else # ($(USE_CLANG), true)
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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=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
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    endif
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  endif
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endif
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# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
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ifeq ($(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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# 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 += $(VM_PICFLAG)
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CFLAGS += -fno-rtti
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CFLAGS += -fno-exceptions
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ifeq ($(USE_CLANG),)
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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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else
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  CFLAGS += -fvisibility=hidden
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endif
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ifeq ($(USE_CLANG), true)
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  # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm'
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  # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment')
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  ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0"
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    STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16
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  else
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    STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16
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  endif
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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 $(STACK_ALIGNMENT_OPT)
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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    += $(ARCHFLAG)
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ifdef E500V2
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CFLAGS += -DE500V2
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endif
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# Use C++ Interpreter
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ifdef CC_INTERP
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  CFLAGS += -DCC_INTERP
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endif
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# Keep temporary files (.ii, .s)
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ifdef NEED_ASM
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  CFLAGS += -save-temps
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else
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  CFLAGS += -pipe
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endif
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# Compiler warnings are treated as errors
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ifneq ($(COMPILER_WARNINGS_FATAL),false)
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  WARNINGS_ARE_ERRORS = -Werror
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endif
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ifeq ($(USE_CLANG), true)
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  # However we need to clean the code up before we can unrestrictedly enable this option with Clang
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  WARNINGS_ARE_ERRORS += -Wno-unused-value -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses
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  WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-compare
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# Not yet supported by clang in Xcode 4.6.2
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#  WARNINGS_ARE_ERRORS += -Wno-tautological-constant-out-of-range-compare
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  WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess
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  WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body
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endif
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WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef
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ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
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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. Only enable it in earlier versions.
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  WARNING_FLAGS = -Wunused-function
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  ifeq ($(USE_CLANG),)
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    WARNINGS_FLAGS += -Wconversion
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  endif
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endif
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CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
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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 = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
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endif
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OPT_CFLAGS/SIZE=-Os
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OPT_CFLAGS/SPEED=-O3
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# Hotspot uses very unstrict aliasing turn this optimization off
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# This option is added to CFLAGS rather than OPT_CFLAGS
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# so that OPT_CFLAGS overrides get this option too.
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CFLAGS += -fno-strict-aliasing
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# The flags to use for an Optimized g++ build
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ifeq ($(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_DEFAULT ?= SIZE
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else
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  OPT_CFLAGS_DEFAULT ?= SPEED
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endif
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ifdef OPT_CFLAGS
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  ifneq ("$(origin OPT_CFLAGS)", "command line")
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    $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")
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  endif
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endif
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OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)
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# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
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# if we use expensive-optimizations
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ifeq ($(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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# Work around some compiler bugs.
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ifeq ($(USE_CLANG), true)
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  ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)
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    OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)
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  endif
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else
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  # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.
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  ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1)
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    OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT)
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  endif
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endif
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# Flags for generating make dependency flags.
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DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
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ifeq ($(USE_CLANG),)
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  ifneq ($(CC_VER_MAJOR), 2)
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    DEPFLAGS += -fpch-deps
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  endif
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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 ($(USE_PRECOMPILED_HEADER),0)
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CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
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endif
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ifeq ($(OS_VENDOR), Darwin)
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  # Setting these parameters makes it an error to link to macosx APIs that are 
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  # newer than the given OS version and makes the linked binaries compatible even
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  # if built on a newer version of the OS.
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  # The expected format is X.Y.Z
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  ifeq ($(MACOSX_VERSION_MIN),)
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    MACOSX_VERSION_MIN=10.7.0
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  endif
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  # The macro takes the version with no dots, ex: 1070
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  CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \
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            -mmacosx-version-min=$(MACOSX_VERSION_MIN)
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  LDFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
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endif
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#------------------------------------------------------------------------
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# Linker flags
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# statically link libstdc++.so, work with gcc but ignored by g++
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STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
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ifeq ($(USE_CLANG),)
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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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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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  # The apple linker has its own variant of mapfiles/version-scripts
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  MAPFLAG = -Xlinker -exported_symbols_list -Xlinker FILENAME
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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 $(VM_PICFLAG)
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  # Keep symbols even they are not used
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  AOUT_FLAGS += -Xlinker -export-dynamic
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endif
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#------------------------------------------------------------------------
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# Debug flags
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ifeq ($(USE_CLANG), true)
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  # Restrict the debug information created by Clang to avoid
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  # too big object files and speed the build up a little bit
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  # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
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  CFLAGS += -flimit-debug-info
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endif
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# DEBUG_BINARIES uses full -g debug information for all configs
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ifeq ($(DEBUG_BINARIES), true)
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  CFLAGS += -g
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else
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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.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.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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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