Mercurial > jdk8-mips64-public > hotspot / file revision

 #

 # Copyright 1999-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 # CA 95054 USA or visit www.sun.com if you need additional information or

 # have any questions.

 #  

 #

 #------------------------------------------------------------------------

 # CC, CPP & AS

 CPP = g++

 CC  = gcc

 AS  = $(CC) -c

 # -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"

 USE_PRECOMPILED_HEADER=1

 PRECOMPILED_HEADER_DIR=.

 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/incls/_precompiled.incl.gch

 endif

 #------------------------------------------------------------------------

 # Compiler flags

 # position-independent code

 PICFLAG = -fPIC

 VM_PICFLAG/LIBJVM = $(PICFLAG)

 VM_PICFLAG/AOUT   =

 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

 CFLAGS += $(VM_PICFLAG)

 CFLAGS += -fno-rtti

 CFLAGS += -fno-exceptions

 CFLAGS += -D_REENTRANT

 CFLAGS += -fcheck-new

 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))

 ARCHFLAG/i486    = -m32 -march=i586

 ARCHFLAG/amd64   = -m64

 ARCHFLAG/ia64    =

 ARCHFLAG/sparc   = -m32 -mcpu=v9

 ARCHFLAG/sparcv9 = -m64 -mcpu=v9

 CFLAGS     += $(ARCHFLAG)

 AOUT_FLAGS += $(ARCHFLAG)

 LFLAGS     += $(ARCHFLAG)

 ASFLAGS    += $(ARCHFLAG)

 # 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

 WARNINGS_ARE_ERRORS = -Werror

 # Except for a few acceptable ones

 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit

 # conversions which might affect the values. To avoid that, we need to turn

 # it off explicitly. 

 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"

 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wsign-compare

 else

 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare

 endif

 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)

 # Special cases

 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 

 # The flags to use for an Optimized g++ build

 OPT_CFLAGS += -O3

 # Hotspot uses very unstrict aliasing turn this optimization off

 OPT_CFLAGS += -fno-strict-aliasing

 # 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

 # 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

 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 ($(BUILDARCH), ia64)

 LFLAGS += -Wl,-relax

 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),)

   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

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

 SONAMEFLAG = -Xlinker -soname=SONAME

 # Build shared library

 SHARED_FLAG = -shared

 # Keep symbols even they are not used

 AOUT_FLAGS += -export-dynamic

 #------------------------------------------------------------------------

 # Debug flags

 # 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_g.so is only about 16M.

 # Change this back to "-g" if you want the most expressive format.

 # (warning: that could easily inflate libjvm_g.so to 150M!)

 # Note: The Itanium gcc compiler crashes when using -gstabs.

 DEBUG_CFLAGS/ia64  = -g

 DEBUG_CFLAGS/amd64 = -g

 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))

 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)

 DEBUG_CFLAGS += -gstabs

 endif

 # DEBUG_BINARIES overrides everything, use full -g debug information

 ifeq ($(DEBUG_BINARIES), true)

   DEBUG_CFLAGS = -g

   CFLAGS += $(DEBUG_CFLAGS)

 endif