#
# 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
HOSTCXX = $(CXX)
HOSTCC = $(CC)
endif
AS = $(CC) -c -x assembler-with-cpp
endif
# -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
# prints the numbers (e.g. "2.95", "3.2.1")
CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
# check for precompiled headers support
ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
# Allow the user to turn off precompiled headers from the command line.
ifneq ($(USE_PRECOMPILED_HEADER),0)
PRECOMPILED_HEADER_DIR=.
PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
endif
endif
#------------------------------------------------------------------------
# Compiler flags
# position-independent code
PICFLAG = -fPIC
VM_PICFLAG/LIBJVM = $(PICFLAG)
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 += $(VM_PICFLAG)
CFLAGS += -fno-rtti
CFLAGS += -fno-exceptions
CFLAGS += -pthread
CFLAGS += -fcheck-new
# version 4 and above support fvisibility=hidden (matches jni_x86.h file)
# except 4.1.2 gives pointless warnings that can't be disabled (afaik)
ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
CFLAGS += -fvisibility=hidden
endif
ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
ARCHFLAG/i486 = -m32 -march=i586
ARCHFLAG/amd64 = -m64
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 += $(ARCHFLAG)
ifdef E500V2
CFLAGS += -DE500V2
endif
# Use C++ Interpreter
ifdef CC_INTERP
CFLAGS += -DCC_INTERP
endif
# Build for embedded targets
ifdef JAVASE_EMBEDDED
CFLAGS += -DJAVASE_EMBEDDED
endif
# Keep temporary files (.ii, .s)
ifdef NEED_ASM
CFLAGS += -save-temps
else
CFLAGS += -pipe
endif
# Compiler warnings are treated as errors
ifneq ($(COMPILER_WARNINGS_FATAL),false)
WARNINGS_ARE_ERRORS = -Werror
endif
# 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/$@))
# XXXDARWIN: for _dyld_bind_fully_image_containing_address
ifeq ($(OS_VENDOR), Darwin)
CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
endif
# The flags to use for an Optimized g++ build
ifeq ($(OS_VENDOR), Darwin)
# use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
OPT_CFLAGS += -Os
else
OPT_CFLAGS += -O3
endif
# 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
# Flags for generating make dependency flags.
ifneq ("${CC_VER_MAJOR}", "2")
DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
endif
# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
ifeq ($(USE_PRECOMPILED_HEADER),0)
CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
endif
#------------------------------------------------------------------------
# Linker flags
# statically link libstdc++.so, work with gcc but ignored by g++
STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
ifneq ("${CC_VER_MAJOR}", "2")
STATIC_LIBGCC += -static-libgcc
endif
ifeq ($(BUILDARCH), ia64)
LFLAGS += -Wl,-relax
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
# 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/arm = -g
DEBUG_CFLAGS/ppc = -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
# 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