duke@435: #
dcubed@3724: # Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435: # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435: #
duke@435: # This code is free software; you can redistribute it and/or modify it
duke@435: # under the terms of the GNU General Public License version 2 only, as
duke@435: # published by the Free Software Foundation.
duke@435: #
duke@435: # This code is distributed in the hope that it will be useful, but WITHOUT
duke@435: # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435: # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435: # version 2 for more details (a copy is included in the LICENSE file that
duke@435: # accompanied this code).
duke@435: #
duke@435: # You should have received a copy of the GNU General Public License version
duke@435: # 2 along with this work; if not, write to the Free Software Foundation,
duke@435: # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435: #
trims@1907: # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907: # or visit www.oracle.com if you need additional information or have any
trims@1907: # questions.
duke@435: #  
duke@435: #
duke@435: 
duke@435: #------------------------------------------------------------------------
erikj@3518: # CC, CXX & AS
duke@435: 
erikj@3600: # If a SPEC is not set already, then use these defaults.
erikj@3600: ifeq ($(SPEC),)
erikj@3600:   # When cross-compiling the ALT_COMPILER_PATH points
erikj@3600:   # to the cross-compilation toolset
erikj@3600:   ifdef CROSS_COMPILE_ARCH
erikj@3600:     CXX = $(ALT_COMPILER_PATH)/g++
erikj@3600:     CC  = $(ALT_COMPILER_PATH)/gcc
erikj@3600:     HOSTCXX = g++
erikj@3600:     HOSTCC  = gcc
erikj@3600:     STRIP = $(ALT_COMPILER_PATH)/strip
erikj@3600:   else
simonis@5230:     ifeq ($(USE_CLANG), true)
simonis@5230:       CXX = clang++
simonis@5230:       CC  = clang
simonis@5230:     else
simonis@5230:       CXX = g++
simonis@5230:       CC  = gcc
simonis@5230:     endif
simonis@5230: 
erikj@3600:     HOSTCXX = $(CXX)
erikj@3600:     HOSTCC  = $(CC)
erikj@3600:     STRIP = strip
erikj@3600:   endif
erikj@3600:   AS  = $(CC) -c
bobv@2036: endif
bobv@2036: 
duke@435: 
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1)
simonis@5230:   CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2)
simonis@5230: else
simonis@5230:   # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
simonis@5230:   # prints the numbers (e.g. "2.95", "3.2.1")
simonis@5230:   CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
simonis@5230:   CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
simonis@5230: endif
duke@435: 
simonis@5230: 
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   # Clang has precompiled headers support by default, but the user can switch
simonis@5230:   # it off by using 'USE_PRECOMPILED_HEADER=0'.
simonis@5230:   ifdef LP64
simonis@5230:     ifeq ($(USE_PRECOMPILED_HEADER),)
simonis@5230:       USE_PRECOMPILED_HEADER=1
simonis@5230:     endif
simonis@5230:   else
simonis@5230:     # We don't support precompiled headers on 32-bit builds because there some files are
simonis@5230:     # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make)
simonis@5230:     # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit.
simonis@5230:     USE_PRECOMPILED_HEADER=0
simonis@5230:   endif
simonis@5230: 
simonis@5230:   ifeq ($(USE_PRECOMPILED_HEADER),1)
simonis@5230: 
simonis@5230:     ifndef LP64
simonis@5230:       $(error " Precompiled Headers only supported on 64-bit platforms!")
simonis@5230:     endif
simonis@5230: 
simonis@5230:     PRECOMPILED_HEADER_DIR=.
simonis@5230:     PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
simonis@5230:     PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch
simonis@5230: 
simonis@5230:     PCH_FLAG = -include precompiled.hpp
simonis@5230:     PCH_FLAG/DEFAULT = $(PCH_FLAG)
simonis@5230:     PCH_FLAG/NO_PCH = -DNO_PCH
simonis@5230:     PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@))
simonis@5230: 
simonis@5230:     VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE)
simonis@5230:     VM_PCH_FLAG/AOUT =
simonis@5230:     VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO))
simonis@5230: 
simonis@5230:     # We only use precompiled headers for the JVM build
simonis@5230:     CFLAGS += $(VM_PCH_FLAG)
simonis@5230: 
simonis@5230:     # There are some files which don't like precompiled headers
simonis@5230:     # The following files are build with 'OPT_CFLAGS/NOOPT' (-O0) in the opt build.
simonis@5230:     # But Clang doesn't support a precompiled header which was compiled with -O3
simonis@5230:     # to be used in a compilation unit which uses '-O0'. We could also prepare an
simonis@5230:     # extra '-O0' PCH file for the opt build and use it here, but it's probably
simonis@5230:     # not worth the effoert as long as only two files need this special handling.
simonis@5230:     PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH)
simonis@5230:     PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH)
simonis@5230:     PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH)
simonis@5230: 
simonis@5230:   endif
simonis@5230: else # ($(USE_CLANG), true)
simonis@5230:   # check for precompiled headers support
simonis@5230:   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
simonis@5230:     # Allow the user to turn off precompiled headers from the command line.
simonis@5230:     ifneq ($(USE_PRECOMPILED_HEADER),0)
simonis@5230:       PRECOMPILED_HEADER_DIR=.
simonis@5230:       PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
simonis@5230:       PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
simonis@5230:     endif
simonis@5230:   endif
duke@435: endif
simonis@5230: 
simonis@5230: # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
simonis@5230: ifeq ($(USE_PRECOMPILED_HEADER),0)
simonis@5230:   CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
stefank@2325: endif
duke@435: 
duke@435: 
duke@435: #------------------------------------------------------------------------
duke@435: # Compiler flags
duke@435: 
duke@435: # position-independent code
duke@435: PICFLAG = -fPIC
duke@435: 
duke@435: VM_PICFLAG/LIBJVM = $(PICFLAG)
duke@435: VM_PICFLAG/AOUT   =
duke@435: VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
duke@435: 
erikj@3649: ifeq ($(JVM_VARIANT_ZERO), true)
never@1445: CFLAGS += $(LIBFFI_CFLAGS)
never@1445: endif
erikj@3649: ifeq ($(JVM_VARIANT_ZEROSHARK), true)
erikj@3649: CFLAGS += $(LIBFFI_CFLAGS)
twisti@2047: CFLAGS += $(LLVM_CFLAGS)
twisti@2047: endif
duke@435: CFLAGS += $(VM_PICFLAG)
duke@435: CFLAGS += -fno-rtti
duke@435: CFLAGS += -fno-exceptions
duke@435: CFLAGS += -D_REENTRANT
simonis@5230: ifeq ($(USE_CLANG),)
simonis@5230:   CFLAGS += -fcheck-new
simonis@5230:   # version 4 and above support fvisibility=hidden (matches jni_x86.h file)
simonis@5230:   # except 4.1.2 gives pointless warnings that can't be disabled (afaik)
simonis@5230:   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
simonis@5230:     CFLAGS += -fvisibility=hidden
simonis@5230:   endif
simonis@5230: else
simonis@5230:   CFLAGS += -fvisibility=hidden
simonis@5230: endif
simonis@5230: 
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm'
simonis@5230:   # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment')
simonis@5230:   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0"
simonis@5230:     STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16
simonis@5230:   else
simonis@5230:     STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16
simonis@5230:   endif
coleenp@2507: endif
duke@435: 
duke@435: ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
duke@435: ARCHFLAG/i486    = -m32 -march=i586
simonis@5230: ARCHFLAG/amd64   = -m64 $(STACK_ALIGNMENT_OPT)
duke@435: ARCHFLAG/ia64    =
duke@435: ARCHFLAG/sparc   = -m32 -mcpu=v9
duke@435: ARCHFLAG/sparcv9 = -m64 -mcpu=v9
bobv@2036: ARCHFLAG/arm     =  -fsigned-char
never@1445: ARCHFLAG/zero    = $(ZERO_ARCHFLAG)
bobv@2036: ifndef E500V2
bobv@2036: ARCHFLAG/ppc     =  -mcpu=powerpc
bobv@2036: endif
duke@435: 
duke@435: CFLAGS     += $(ARCHFLAG)
duke@435: AOUT_FLAGS += $(ARCHFLAG)
duke@435: LFLAGS     += $(ARCHFLAG)
duke@435: ASFLAGS    += $(ARCHFLAG)
duke@435: 
bobv@2036: ifdef E500V2
bobv@2036: CFLAGS += -DE500V2
bobv@2036: endif
bobv@2036: 
duke@435: # Use C++ Interpreter
duke@435: ifdef CC_INTERP
duke@435:   CFLAGS += -DCC_INTERP
duke@435: endif
duke@435: 
duke@435: # Keep temporary files (.ii, .s)
duke@435: ifdef NEED_ASM
duke@435:   CFLAGS += -save-temps
duke@435: else
duke@435:   CFLAGS += -pipe
duke@435: endif
duke@435: 
duke@435: # Compiler warnings are treated as errors
duke@435: WARNINGS_ARE_ERRORS = -Werror
xlu@664: 
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   # However we need to clean the code up before we can unrestrictedly enable this option with Clang
simonis@5230:   WARNINGS_ARE_ERRORS += -Wno-unused-value -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses
simonis@5230:   WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare
simonis@5230:   WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess
simonis@5230:   WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body
simonis@5230: endif
simonis@5230: 
mikael@4889: WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function
mikael@4889: 
simonis@5230: ifeq ($(USE_CLANG),)
simonis@5230:   # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
simonis@5230:   # conversions which might affect the values. Only enable it in earlier versions.
simonis@5230:   ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
simonis@5230:     WARNING_FLAGS += -Wconversion
simonis@5230:   endif
xlu@664: endif
xlu@664: 
jprovino@4722: CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
duke@435: # Special cases
duke@435: CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 
duke@435: 
duke@435: # The flags to use for an Optimized g++ build
jprovino@4165: OPT_CFLAGS/SIZE=-Os
jprovino@4165: OPT_CFLAGS/SPEED=-O3
duke@435: 
duke@435: # Hotspot uses very unstrict aliasing turn this optimization off
jprovino@4165: # This option is added to CFLAGS rather than OPT_CFLAGS
jprovino@4165: # so that OPT_CFLAGS overrides get this option too.
jprovino@4165: CFLAGS += -fno-strict-aliasing 
jprovino@4165: 
jprovino@4165: OPT_CFLAGS_DEFAULT ?= SPEED
jprovino@4165: 
jprovino@4165: ifdef OPT_CFLAGS
jprovino@4165:   ifneq ("$(origin OPT_CFLAGS)", "command line")
jprovino@4165:     $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")
jprovino@4165:   endif
jprovino@4165: endif
jprovino@4165: 
jprovino@4165: OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)
duke@435: 
duke@435: # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 
duke@435: # if we use expensive-optimizations
duke@435: ifeq ($(BUILDARCH), ia64)
duke@435: OPT_CFLAGS += -fno-expensive-optimizations
duke@435: endif
duke@435: 
duke@435: OPT_CFLAGS/NOOPT=-O0
duke@435: 
simonis@5230: # Work around some compiler bugs.
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)
simonis@5230:     OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)
simonis@5230:   endif
simonis@5230: else
simonis@5230:   # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.
simonis@5230:   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1)
simonis@5230:     OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT)
simonis@5230:   endif
kvn@1179: endif
kvn@1179: 
stefank@2314: # Flags for generating make dependency flags.
simonis@5230: DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
simonis@5230: ifeq ($(USE_CLANG),)
simonis@5230:   ifneq ("${CC_VER_MAJOR}", "2")
simonis@5230:     DEPFLAGS += -fpch-deps
simonis@5230:   endif
stefank@2325: endif
stefank@2325: 
duke@435: #------------------------------------------------------------------------
duke@435: # Linker flags
duke@435: 
duke@435: # statically link libstdc++.so, work with gcc but ignored by g++
duke@435: STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
duke@435: 
simonis@5230: ifeq ($(USE_CLANG),)
simonis@5230:   # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
simonis@5230:   ifneq ("${CC_VER_MAJOR}", "2")
simonis@5230:     STATIC_LIBGCC += -static-libgcc
simonis@5230:   endif
duke@435: 
simonis@5230:   ifeq ($(BUILDARCH), ia64)
simonis@5230:     LFLAGS += -Wl,-relax
simonis@5230:   endif
duke@435: endif
duke@435: 
duke@435: # Enable linker optimization
duke@435: LFLAGS += -Xlinker -O1
duke@435: 
simonis@5230: ifeq ($(USE_CLANG),)
simonis@5230:   # If this is a --hash-style=gnu system, use --hash-style=both
simonis@5230:   #   The gnu .hash section won't work on some Linux systems like SuSE 10.
simonis@5230:   _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu')
simonis@5230:   ifneq ($(_HAS_HASH_STYLE_GNU),)
simonis@5230:     LDFLAGS_HASH_STYLE = -Wl,--hash-style=both
simonis@5230:   endif
simonis@5230: else
simonis@5230:   # Don't know how to find out the 'hash style' of a system as '-dumpspecs'
simonis@5230:   # doesn't work for Clang. So for now we'll alwys use --hash-style=both
ohair@1011:   LDFLAGS_HASH_STYLE = -Wl,--hash-style=both
ohair@1011: endif
simonis@5230: 
ohair@1011: LFLAGS += $(LDFLAGS_HASH_STYLE)
ohair@1011: 
duke@435: # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
duke@435: MAPFLAG = -Xlinker --version-script=FILENAME
duke@435: 
duke@435: # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
duke@435: SONAMEFLAG = -Xlinker -soname=SONAME
duke@435: 
duke@435: # Build shared library
duke@435: SHARED_FLAG = -shared
duke@435: 
duke@435: # Keep symbols even they are not used
dsamersoff@2839: AOUT_FLAGS += -Xlinker -export-dynamic
duke@435: 
duke@435: #------------------------------------------------------------------------
duke@435: # Debug flags
duke@435: 
simonis@5230: ifeq ($(USE_CLANG), true)
simonis@5230:   # Restrict the debug information created by Clang to avoid
simonis@5230:   # too big object files and speed the build up a little bit
simonis@5230:   # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
simonis@5230:   CFLAGS += -flimit-debug-info
simonis@5230: endif
simonis@5230: 
dcubed@3989: # DEBUG_BINARIES uses full -g debug information for all configs
dcubed@3989: ifeq ($(DEBUG_BINARIES), true)
dcubed@3989:   CFLAGS += -g
dcubed@3989: else
dcubed@3989:   # Use the stabs format for debugging information (this is the default
dcubed@3989:   # on gcc-2.91). It's good enough, has all the information about line
dcubed@4344:   # numbers and local variables, and libjvm.so is only about 16M.
dcubed@3989:   # Change this back to "-g" if you want the most expressive format.
dcubed@4344:   # (warning: that could easily inflate libjvm.so to 150M!)
dcubed@3989:   # Note: The Itanium gcc compiler crashes when using -gstabs.
dcubed@3989:   DEBUG_CFLAGS/ia64  = -g
dcubed@3989:   DEBUG_CFLAGS/amd64 = -g
dcubed@3989:   DEBUG_CFLAGS/arm   = -g
dcubed@3989:   DEBUG_CFLAGS/ppc   = -g
dcubed@3989:   DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
dcubed@3989:   ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
simonis@5230:       ifeq ($(USE_CLANG), true)
simonis@5230:         # Clang doesn't understand -gstabs
simonis@5230:         OPT_CFLAGS += -g
simonis@5230:       else
simonis@5230:         OPT_CFLAGS += -gstabs
simonis@5230:       endif
dcubed@3150:   endif
dcubed@3989:   
dcubed@3989:   ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
dcubed@3989:     FASTDEBUG_CFLAGS/ia64  = -g
dcubed@3989:     FASTDEBUG_CFLAGS/amd64 = -g
dcubed@3989:     FASTDEBUG_CFLAGS/arm   = -g
dcubed@3989:     FASTDEBUG_CFLAGS/ppc   = -g
dcubed@3989:     FASTDEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
dcubed@3989:     ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),)
simonis@5230:       ifeq ($(USE_CLANG), true)
simonis@5230:         # Clang doesn't understand -gstabs
simonis@5230:         OPT_CFLAGS += -g
simonis@5230:       else
simonis@5230:         OPT_CFLAGS += -gstabs
simonis@5230:       endif
dcubed@3989:     endif
dcubed@3989:   
dcubed@3989:     OPT_CFLAGS/ia64  = -g
dcubed@3989:     OPT_CFLAGS/amd64 = -g
dcubed@3989:     OPT_CFLAGS/arm   = -g
dcubed@3989:     OPT_CFLAGS/ppc   = -g
dcubed@3989:     OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH))
dcubed@3989:     ifeq ($(OPT_CFLAGS/$(BUILDARCH)),)
simonis@5230:       ifeq ($(USE_CLANG), true)
simonis@5230:         # Clang doesn't understand -gstabs
simonis@5230:         OPT_CFLAGS += -g
simonis@5230:       else
simonis@5230:         OPT_CFLAGS += -gstabs
simonis@5230:       endif
dcubed@3989:     endif
dcubed@3150:   endif
dcubed@3150: endif
dcubed@3150: 
bobv@2036: # If we are building HEADLESS, pass on to VM
bobv@2036: # so it can set the java.awt.headless property
bobv@2036: ifdef HEADLESS
bobv@2036: CFLAGS += -DHEADLESS
bobv@2036: endif
bobv@2036: 
bobv@2036: # We are building Embedded for a small device
bobv@2036: # favor code space over speed
bobv@2036: ifdef MINIMIZE_RAM_USAGE
bobv@2036: CFLAGS += -DMINIMIZE_RAM_USAGE
bobv@2036: endif