| # |
| # Copyright (c) 1999, 2016, 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. |
| # |
| # |
| |
| #------------------------------------------------------------------------ |
| # 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 |
| STRIP = $(ALT_COMPILER_PATH)/strip |
| else |
| ifeq ($(USE_CLANG), true) |
| CXX = clang++ |
| CC = clang |
| else |
| CXX = g++ |
| CC = gcc |
| endif |
| |
| HOSTCXX = $(CXX) |
| HOSTCC = $(CC) |
| STRIP = strip |
| endif |
| AS = $(CC) -c |
| endif |
| |
| |
| ifeq ($(USE_CLANG), true) |
| CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1) |
| CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2) |
| else |
| # -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) |
| CC_VER_MICRO := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f3) |
| # Workaround Ubuntu bug where -dumpversion doesn't print a micro version |
| # https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1360404 |
| ifeq ($(CC_VER_MICRO),) |
| CC_VER_MICRO := "0" |
| endif |
| endif |
| |
| ifeq ($(USE_CLANG), true) |
| # Clang has precompiled headers support by default, but the user can switch |
| # it off by using 'USE_PRECOMPILED_HEADER=0'. |
| ifdef LP64 |
| ifeq ($(USE_PRECOMPILED_HEADER),) |
| USE_PRECOMPILED_HEADER=1 |
| endif |
| else |
| # We don't support precompiled headers on 32-bit builds because there some files are |
| # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make) |
| # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit. |
| USE_PRECOMPILED_HEADER=0 |
| endif |
| |
| ifeq ($(USE_PRECOMPILED_HEADER),1) |
| |
| ifndef LP64 |
| $(error " Precompiled Headers only supported on 64-bit platforms!") |
| endif |
| |
| PRECOMPILED_HEADER_DIR=. |
| PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp |
| PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch |
| |
| PCH_FLAG = -include precompiled.hpp |
| PCH_FLAG/DEFAULT = $(PCH_FLAG) |
| PCH_FLAG/NO_PCH = -DNO_PCH |
| PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@)) |
| |
| VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE) |
| VM_PCH_FLAG/AOUT = |
| VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO)) |
| |
| # We only use precompiled headers for the JVM build |
| CFLAGS += $(VM_PCH_FLAG) |
| |
| # There are some files which don't like precompiled headers |
| # The following files are build with 'OPT_CFLAGS/NOOPT' (-O0) in the opt build. |
| # But Clang doesn't support a precompiled header which was compiled with -O3 |
| # to be used in a compilation unit which uses '-O0'. We could also prepare an |
| # extra '-O0' PCH file for the opt build and use it here, but it's probably |
| # not worth the effort as long as only two files need this special handling. |
| PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH) |
| PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH) |
| PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH) |
| |
| endif |
| else # ($(USE_CLANG), true) |
| # 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=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch |
| endif |
| endif |
| endif |
| |
| # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. |
| ifeq ($(USE_PRECOMPILED_HEADER),0) |
| CFLAGS += -DDONT_USE_PRECOMPILED_HEADER |
| 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 += $(VM_PICFLAG) |
| CFLAGS += -fno-rtti |
| CFLAGS += -fno-exceptions |
| CFLAGS += -D_REENTRANT |
| ifeq ($(USE_CLANG),) |
| 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 |
| else |
| CFLAGS += -fvisibility=hidden |
| endif |
| |
| ifeq ($(USE_CLANG), true) |
| # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm' |
| # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment') |
| ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0" |
| STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16 |
| else |
| STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16 |
| endif |
| endif |
| |
| ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) |
| ARCHFLAG/i486 = -m32 -march=i586 |
| ARCHFLAG/amd64 = -m64 $(STACK_ALIGNMENT_OPT) |
| ARCHFLAG/aarch64 = |
| ARCHFLAG/ia64 = |
| ARCHFLAG/sparc = -m32 -mcpu=v9 |
| ARCHFLAG/sparcv9 = -m64 -mcpu=v9 |
| ARCHFLAG/zero = $(ZERO_ARCHFLAG) |
| ARCHFLAG/ppc64 = -m64 |
| |
| CFLAGS += $(ARCHFLAG) |
| AOUT_FLAGS += $(ARCHFLAG) |
| LFLAGS += $(ARCHFLAG) |
| ASFLAGS += $(ARCHFLAG) |
| |
| # Use C++ Interpreter |
| ifdef CC_INTERP |
| CFLAGS += -DCC_INTERP |
| endif |
| |
| # Keep temporary files (.ii, .s) |
| ifdef NEED_ASM |
| CFLAGS += -save-temps |
| else |
| CFLAGS += -pipe |
| endif |
| |
| # Compiler warnings are treated as errors |
| WARNINGS_ARE_ERRORS ?= -Werror |
| |
| ifeq ($(USE_CLANG), true) |
| # However we need to clean the code up before we can unrestrictedly enable this option with Clang |
| WARNINGS_ARE_ERRORS += -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses |
| WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare |
| WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess |
| WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body |
| endif |
| |
| WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wunused-value -Wformat=2 -Wreturn-type -Woverloaded-virtual |
| |
| ifeq ($(USE_CLANG),) |
| # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit |
| # conversions which might affect the values. Only enable it in earlier versions. |
| ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" |
| # GCC < 4.3 |
| WARNING_FLAGS += -Wconversion |
| endif |
| ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1" |
| # GCC >= 4.8 |
| # This flag is only known since GCC 4.3. Gcc 4.8 contains a fix so that with templates no |
| # warnings are issued: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11856 |
| WARNING_FLAGS += -Wtype-limits |
| # GCC < 4.8 don't accept this flag for C++. |
| WARNING_FLAGS += -Wno-format-zero-length |
| # GCC 4.8 reports less false positives than the older compilers. |
| WARNING_FLAGS += -Wuninitialized |
| endif |
| endif |
| |
| CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS) |
| |
| # Special cases |
| CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) |
| |
| # optimization control flags (Used by fastdebug and release variants) |
| OPT_CFLAGS/NOOPT=-O0 |
| OPT_CFLAGS/DEBUG=-O0 |
| OPT_CFLAGS/SIZE=-Os |
| OPT_CFLAGS/SPEED=-O3 |
| |
| OPT_CFLAGS_DEFAULT ?= SPEED |
| |
| # Hotspot uses very unstrict aliasing turn this optimization off |
| # This option is added to CFLAGS rather than OPT_CFLAGS |
| # so that OPT_CFLAGS overrides get this option too. |
| CFLAGS += -fno-strict-aliasing |
| |
| ifdef OPT_CFLAGS |
| ifneq ("$(origin OPT_CFLAGS)", "command line") |
| $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") |
| endif |
| endif |
| |
| OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) |
| |
| # Variable tracking size limit exceeded for VMStructs::init() |
| ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "1" |
| # GCC >= 4.3 |
| # Gcc 4.1.2 does not support this flag, nor does it have problems compiling the file. |
| OPT_CFLAGS/vmStructs.o += -fno-var-tracking-assignments |
| # The debug flag is added to OPT_CFLAGS, but lost in case of per-file overrides |
| # of OPT_CFLAGS. Restore it here. |
| ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) |
| OPT_CFLAGS/vmStructs.o += -g |
| endif |
| endif |
| |
| # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp |
| # if we use expensive-optimizations |
| ifeq ($(BUILDARCH), ia64) |
| OPT_CFLAGS += -fno-expensive-optimizations |
| endif |
| |
| # Work around some compiler bugs. |
| ifeq ($(USE_CLANG), true) |
| ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) |
| OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) |
| # The debug flag is added to OPT_CFLAGS, but lost in case of per-file overrides |
| # of OPT_CFLAGS. Restore it here. |
| ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) |
| OPT_CFLAGS/loopTransform.o += -g |
| endif |
| endif |
| else |
| # Do not allow GCC 4.1.1 |
| ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 1 \& $(CC_VER_MICRO) = 1), 1) |
| $(error "GCC $(CC_VER_MAJOR).$(CC_VER_MINOR).$(CC_VER_MICRO) not supported because of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27724") |
| endif |
| # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. |
| ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) |
| OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) |
| endif |
| endif |
| |
| # Flags for generating make dependency flags. |
| DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) |
| ifeq ($(USE_CLANG),) |
| ifneq ($(CC_VER_MAJOR), 2) |
| DEPFLAGS += -fpch-deps |
| endif |
| endif |
| |
| #------------------------------------------------------------------------ |
| # Linker flags |
| |
| # statically link libstdc++.so, work with gcc but ignored by g++ |
| STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic |
| |
| # Enable linker optimization |
| LFLAGS += -Xlinker -O1 |
| |
| ifeq ($(USE_CLANG),) |
| STATIC_LIBGCC += -static-libgcc |
| |
| ifneq (, findstring(debug,$(BUILD_FLAVOR))) |
| # for relocations read-only |
| LFLAGS += -Xlinker -z -Xlinker relro |
| |
| ifeq ($(BUILD_FLAVOR), debug) |
| # disable incremental relocations linking |
| LFLAGS += -Xlinker -z -Xlinker now |
| endif |
| endif |
| |
| ifeq ($(BUILDARCH), ia64) |
| LFLAGS += -Wl,-relax |
| endif |
| |
| # 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 |
| else |
| # Don't know how to find out the 'hash style' of a system as '-dumpspecs' |
| # doesn't work for Clang. So for now we'll alwys use --hash-style=both |
| 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 $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj |
| SONAMEFLAG = -Xlinker -soname=SONAME |
| |
| # Build shared library |
| SHARED_FLAG = -shared |
| |
| # Keep symbols even they are not used |
| AOUT_FLAGS += -Xlinker -export-dynamic |
| |
| #------------------------------------------------------------------------ |
| # Debug flags |
| |
| ifeq ($(USE_CLANG), true) |
| # Restrict the debug information created by Clang to avoid |
| # too big object files and speed the build up a little bit |
| # (see http://llvm.org/bugs/show_bug.cgi?id=7554) |
| CFLAGS += -flimit-debug-info |
| endif |
| |
| # Allow no optimizations. |
| DEBUG_CFLAGS=-O0 |
| |
| # DEBUG_BINARIES uses full -g debug information for all configs |
| ifeq ($(DEBUG_BINARIES), true) |
| CFLAGS += -g |
| else |
| DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) |
| ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) |
| DEBUG_CFLAGS += -g |
| endif |
| |
| ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) |
| FASTDEBUG_CFLAGS += $(FASTDEBUG_CFLAGS/$(BUILDARCH)) |
| ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),) |
| FASTDEBUG_CFLAGS += -g |
| endif |
| |
| OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH)) |
| ifeq ($(OPT_CFLAGS/$(BUILDARCH)),) |
| OPT_CFLAGS += -g |
| endif |
| endif |
| endif |
| |
| ifeq ($(USE_CLANG),) |
| # Enable bounds checking. |
| ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1" |
| # stack smashing checks. |
| DEBUG_CFLAGS += -fstack-protector-all --param ssp-buffer-size=1 |
| endif |
| 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 |
| |
| # Stack walking in the JVM relies on frame pointer (%rbp) to walk thread stack. |
| # Explicitly specify -fno-omit-frame-pointer because it is off by default |
| # starting with gcc 4.6. |
| ifndef USE_SUNCC |
| CFLAGS += -fno-omit-frame-pointer |
| endif |
| |
| -include $(HS_ALT_MAKE)/linux/makefiles/gcc.make |