# # Copyright (c) 1999, 2011, 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/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 += $(VM_PICFLAG) CFLAGS += -fno-rtti CFLAGS += -fno-exceptions CFLAGS += -pthread CFLAGS += -fcheck-new # version 4 and above support fvisibility=hidden (matches jni_x86.h file) # except 4.1.2 gives pointless warnings that can't be disabled (afaik) ifneq "$(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/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 += $(ARCHFLAG) ifdef E500V2 CFLAGS += -DE500V2 endif # Use C++ Interpreter ifdef CC_INTERP CFLAGS += -DCC_INTERP endif # Build for embedded targets ifdef JAVASE_EMBEDDED CFLAGS += -DJAVASE_EMBEDDED endif # Keep temporary files (.ii, .s) ifdef NEED_ASM CFLAGS += -save-temps else CFLAGS += -pipe endif # Compiler warnings are treated as errors ifneq ($(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 = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) endif # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. ifeq ($(USE_PRECOMPILED_HEADER),0) CFLAGS += -DDONT_USE_PRECOMPILED_HEADER endif #------------------------------------------------------------------------ # Linker flags # statically link libstdc++.so, work with gcc but ignored by g++ STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. ifneq ("${CC_VER_MAJOR}", "2") STATIC_LIBGCC += -static-libgcc endif ifeq ($(BUILDARCH), ia64) LFLAGS += -Wl,-relax endif # 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 += # Darwin doesn't use ELF and doesn't support version scripts LDNOMAP = true # 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