1 # 2 # Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. 3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 # 5 # This code is free software; you can redistribute it and/or modify it 6 # under the terms of the GNU General Public License version 2 only, as 7 # published by the Free Software Foundation. 8 # 9 # This code is distributed in the hope that it will be useful, but WITHOUT 10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 # version 2 for more details (a copy is included in the LICENSE file that 13 # accompanied this code). 14 # 15 # You should have received a copy of the GNU General Public License version 16 # 2 along with this work; if not, write to the Free Software Foundation, 17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 # 19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 # or visit www.oracle.com if you need additional information or have any 21 # questions. 22 # 23 # 24 25 OS_VENDOR = $(shell uname -s) 26 27 #------------------------------------------------------------------------ 28 # CC, CPP & AS 29 30 # When cross-compiling the ALT_COMPILER_PATH points 31 # to the cross-compilation toolset 32 ifdef CROSS_COMPILE_ARCH 33 CPP = $(ALT_COMPILER_PATH)/g++ 34 CC = $(ALT_COMPILER_PATH)/gcc 35 HOSTCPP = g++ 36 HOSTCC = gcc 37 else ifneq ($(OS_VENDOR), Darwin) 38 CXX = g++ 39 CPP = $(CXX) 40 CC = gcc 41 HOSTCPP = $(CPP) 42 HOSTCC = $(CC) 43 endif 44 45 # i486 hotspot requires -mstackrealign on Darwin. 46 # llvm-gcc supports this in Xcode 3.2.6 and 4.0. 47 # gcc-4.0 supports this on earlier versions. 48 # Prefer llvm-gcc where available. 49 ifeq ($(OS_VENDOR), Darwin) 50 ifeq ($(origin CXX), default) 51 CXX = llvm-g++ 52 endif 53 ifeq ($(origin CC), default) 54 CC = llvm-gcc 55 endif 56 CPP = $(CXX) 57 58 ifeq ($(ARCH), i486) 59 LLVM_SUPPORTS_STACKREALIGN := $(shell \ 60 [ "0"`llvm-gcc -v 2>&1 | grep LLVM | sed -E "s/.*LLVM build ([0-9]+).*/\1/"` -gt "2333" ] \ 61 && echo true || echo false) 62 63 ifeq ($(LLVM_SUPPORTS_STACKREALIGN), true) 64 CXX32 ?= llvm-g++ 65 CC32 ?= llvm-gcc 66 else 67 CXX32 ?= g++-4.0 68 CC32 ?= gcc-4.0 69 endif 70 CPP = $(CXX32) 71 CC = $(CC32) 72 endif 73 74 HOSTCPP = $(CPP) 75 HOSTCC = $(CC) 76 endif 77 78 AS = $(CC) -c -x assembler-with-cpp 79 80 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only 81 # prints the numbers (e.g. "2.95", "3.2.1") 82 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 83 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 84 85 # check for precompiled headers support 86 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 87 # Allow the user to turn off precompiled headers from the command line. 88 ifneq ($(USE_PRECOMPILED_HEADER),0) 89 PRECOMPILED_HEADER_DIR=. 90 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 91 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 92 endif 93 endif 94 95 96 #------------------------------------------------------------------------ 97 # Compiler flags 98 99 # position-independent code 100 PICFLAG = -fPIC 101 102 VM_PICFLAG/LIBJVM = $(PICFLAG) 103 VM_PICFLAG/AOUT = 104 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 105 106 ifeq ($(ZERO_BUILD), true) 107 CFLAGS += $(LIBFFI_CFLAGS) 108 endif 109 ifeq ($(SHARK_BUILD), true) 110 CFLAGS += $(LLVM_CFLAGS) 111 endif 112 CFLAGS += $(VM_PICFLAG) 113 CFLAGS += -fno-rtti 114 CFLAGS += -fno-exceptions 115 CFLAGS += -pthread 116 CFLAGS += -fcheck-new 117 # version 4 and above support fvisibility=hidden (matches jni_x86.h file) 118 # except 4.1.2 gives pointless warnings that can't be disabled (afaik) 119 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 120 CFLAGS += -fvisibility=hidden 121 endif 122 123 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 124 ARCHFLAG/i486 = -m32 -march=i586 125 ARCHFLAG/amd64 = -m64 126 ARCHFLAG/ia64 = 127 ARCHFLAG/sparc = -m32 -mcpu=v9 128 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 129 ARCHFLAG/zero = $(ZERO_ARCHFLAG) 130 131 # Darwin-specific build flags 132 ifeq ($(OS_VENDOR), Darwin) 133 # Ineffecient 16-byte stack re-alignment on Darwin/IA32 134 ARCHFLAG/i486 += -mstackrealign 135 endif 136 137 CFLAGS += $(ARCHFLAG) 138 AOUT_FLAGS += $(ARCHFLAG) 139 LFLAGS += $(ARCHFLAG) 140 ASFLAGS += $(ARCHFLAG) 141 142 ifdef E500V2 143 CFLAGS += -DE500V2 144 endif 145 146 # Use C++ Interpreter 147 ifdef CC_INTERP 148 CFLAGS += -DCC_INTERP 149 endif 150 151 # Build for embedded targets 152 ifdef JAVASE_EMBEDDED 153 CFLAGS += -DJAVASE_EMBEDDED 154 endif 155 156 # Keep temporary files (.ii, .s) 157 ifdef NEED_ASM 158 CFLAGS += -save-temps 159 else 160 CFLAGS += -pipe 161 endif 162 163 # Compiler warnings are treated as errors 164 ifneq ($(COMPILER_WARNINGS_FATAL),false) 165 WARNINGS_ARE_ERRORS = -Werror 166 endif 167 168 # Except for a few acceptable ones 169 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit 170 # conversions which might affect the values. To avoid that, we need to turn 171 # it off explicitly. 172 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 173 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wsign-compare 174 else 175 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare 176 endif 177 178 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS) 179 # Special cases 180 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 181 # XXXDARWIN: for _dyld_bind_fully_image_containing_address 182 ifeq ($(OS_VENDOR), Darwin) 183 CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations 184 endif 185 186 187 # The flags to use for an Optimized g++ build 188 ifeq ($(OS_VENDOR), Darwin) 189 # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy 190 # <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers> 191 OPT_CFLAGS += -Os 192 else 193 OPT_CFLAGS += -O3 194 endif 195 196 # Hotspot uses very unstrict aliasing turn this optimization off 197 OPT_CFLAGS += -fno-strict-aliasing 198 199 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 200 # if we use expensive-optimizations 201 ifeq ($(BUILDARCH), ia64) 202 OPT_CFLAGS += -fno-expensive-optimizations 203 endif 204 205 OPT_CFLAGS/NOOPT=-O0 206 207 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 208 ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0" 209 OPT_CFLAGS/mulnode.o += -O0 210 endif 211 212 # Flags for generating make dependency flags. 213 ifneq ("${CC_VER_MAJOR}", "2") 214 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 215 endif 216 217 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 218 ifeq ($(USE_PRECOMPILED_HEADER),0) 219 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 220 endif 221 222 #------------------------------------------------------------------------ 223 # Linker flags 224 225 # statically link libstdc++.so, work with gcc but ignored by g++ 226 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 227 228 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 229 ifneq ("${CC_VER_MAJOR}", "2") 230 STATIC_LIBGCC += -static-libgcc 231 endif 232 233 ifeq ($(BUILDARCH), ia64) 234 LFLAGS += -Wl,-relax 235 endif 236 237 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 238 MAPFLAG = -Xlinker --version-script=FILENAME 239 240 # 241 # Shared Library 242 # 243 ifeq ($(OS_VENDOR), Darwin) 244 # Standard linker flags 245 LFLAGS += 246 247 # Darwin doesn't use ELF and doesn't support version scripts 248 LDNOMAP = true 249 250 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 251 SONAMEFLAG = 252 253 # Build shared library 254 SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG) 255 256 # Keep symbols even they are not used 257 #AOUT_FLAGS += -Xlinker -export-dynamic 258 else 259 # Enable linker optimization 260 LFLAGS += -Xlinker -O1 261 262 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 263 SONAMEFLAG = -Xlinker -soname=SONAME 264 265 # Build shared library 266 SHARED_FLAG = -shared $(VM_PICFLAG) 267 268 # Keep symbols even they are not used 269 AOUT_FLAGS += -Xlinker -export-dynamic 270 endif 271 272 #------------------------------------------------------------------------ 273 # Debug flags 274 275 # Use the stabs format for debugging information (this is the default 276 # on gcc-2.91). It's good enough, has all the information about line 277 # numbers and local variables, and libjvm_g.so is only about 16M. 278 # Change this back to "-g" if you want the most expressive format. 279 # (warning: that could easily inflate libjvm_g.so to 150M!) 280 # Note: The Itanium gcc compiler crashes when using -gstabs. 281 DEBUG_CFLAGS/ia64 = -g 282 DEBUG_CFLAGS/amd64 = -g 283 DEBUG_CFLAGS/arm = -g 284 DEBUG_CFLAGS/ppc = -g 285 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 286 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) 287 DEBUG_CFLAGS += -gstabs 288 endif 289 290 # DEBUG_BINARIES overrides everything, use full -g debug information 291 ifeq ($(DEBUG_BINARIES), true) 292 DEBUG_CFLAGS = -g 293 CFLAGS += $(DEBUG_CFLAGS) 294 endif 295 296 # If we are building HEADLESS, pass on to VM 297 # so it can set the java.awt.headless property 298 ifdef HEADLESS 299 CFLAGS += -DHEADLESS 300 endif 301 302 # We are building Embedded for a small device 303 # favor code space over speed 304 ifdef MINIMIZE_RAM_USAGE 305 CFLAGS += -DMINIMIZE_RAM_USAGE 306 endif