1 # 2 # Copyright (c) 1999, 2012, 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 #------------------------------------------------------------------------ 26 # CC, CXX & AS 27 28 # If a SPEC is not set already, then use these defaults. 29 ifeq ($(SPEC),) 30 # When cross-compiling the ALT_COMPILER_PATH points 31 # to the cross-compilation toolset 32 ifdef CROSS_COMPILE_ARCH 33 CXX = $(ALT_COMPILER_PATH)/g++ 34 CC = $(ALT_COMPILER_PATH)/gcc 35 HOSTCXX = g++ 36 HOSTCC = gcc 37 STRIP = $(ALT_COMPILER_PATH)/strip 38 else 39 CXX = g++ 40 CC = gcc 41 HOSTCXX = $(CXX) 42 HOSTCC = $(CC) 43 STRIP = strip 44 endif 45 AS = $(CC) -c 46 endif 47 48 49 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only 50 # prints the numbers (e.g. "2.95", "3.2.1") 51 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 52 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 53 54 # check for precompiled headers support 55 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 56 # Allow the user to turn off precompiled headers from the command line. 57 ifneq ($(USE_PRECOMPILED_HEADER),0) 58 PRECOMPILED_HEADER_DIR=. 59 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 60 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 61 endif 62 endif 63 64 65 #------------------------------------------------------------------------ 66 # Compiler flags 67 68 # position-independent code 69 PICFLAG = -fPIC 70 71 VM_PICFLAG/LIBJVM = $(PICFLAG) 72 VM_PICFLAG/AOUT = 73 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 74 75 ifeq ($(JVM_VARIANT_ZERO), true) 76 CFLAGS += $(LIBFFI_CFLAGS) 77 endif 78 ifeq ($(JVM_VARIANT_ZEROSHARK), true) 79 CFLAGS += $(LIBFFI_CFLAGS) 80 CFLAGS += $(LLVM_CFLAGS) 81 endif 82 CFLAGS += $(VM_PICFLAG) 83 CFLAGS += -fno-rtti 84 CFLAGS += -fno-exceptions 85 CFLAGS += -D_REENTRANT 86 CFLAGS += -fcheck-new 87 # version 4 and above support fvisibility=hidden (matches jni_x86.h file) 88 # except 4.1.2 gives pointless warnings that can't be disabled (afaik) 89 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 90 CFLAGS += -fvisibility=hidden 91 endif 92 93 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 94 ARCHFLAG/i486 = -m32 -march=i586 95 ARCHFLAG/amd64 = -m64 96 ARCHFLAG/ia64 = 97 ARCHFLAG/sparc = -m32 -mcpu=v9 98 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 99 ARCHFLAG/arm = -fsigned-char 100 ARCHFLAG/zero = $(ZERO_ARCHFLAG) 101 ifndef E500V2 102 ARCHFLAG/ppc = -mcpu=powerpc 103 endif 104 105 CFLAGS += $(ARCHFLAG) 106 AOUT_FLAGS += $(ARCHFLAG) 107 LFLAGS += $(ARCHFLAG) 108 ASFLAGS += $(ARCHFLAG) 109 110 ifdef E500V2 111 CFLAGS += -DE500V2 112 endif 113 114 # Use C++ Interpreter 115 ifdef CC_INTERP 116 CFLAGS += -DCC_INTERP 117 endif 118 119 # Keep temporary files (.ii, .s) 120 ifdef NEED_ASM 121 CFLAGS += -save-temps 122 else 123 CFLAGS += -pipe 124 endif 125 126 # Compiler warnings are treated as errors 127 WARNINGS_ARE_ERRORS = -Werror 128 129 # Except for a few acceptable ones 130 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit 131 # conversions which might affect the values. To avoid that, we need to turn 132 # it off explicitly. 133 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 134 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wsign-compare 135 else 136 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare 137 endif 138 139 ADDITIONAL_WARNINGS = -Wunused-function 140 141 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS) $(ADDITIONAL_WARNINGS) 142 # Special cases 143 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 144 145 # The flags to use for an Optimized g++ build 146 OPT_CFLAGS/SIZE=-Os 147 OPT_CFLAGS/SPEED=-O3 148 149 # Hotspot uses very unstrict aliasing turn this optimization off 150 # This option is added to CFLAGS rather than OPT_CFLAGS 151 # so that OPT_CFLAGS overrides get this option too. 152 CFLAGS += -fno-strict-aliasing 153 154 OPT_CFLAGS_DEFAULT ?= SPEED 155 156 ifdef OPT_CFLAGS 157 ifneq ("$(origin OPT_CFLAGS)", "command line") 158 $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") 159 endif 160 endif 161 162 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) 163 164 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 165 # if we use expensive-optimizations 166 ifeq ($(BUILDARCH), ia64) 167 OPT_CFLAGS += -fno-expensive-optimizations 168 endif 169 170 OPT_CFLAGS/NOOPT=-O0 171 172 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 173 ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0" 174 OPT_CFLAGS/mulnode.o += -O0 175 endif 176 177 # Flags for generating make dependency flags. 178 ifneq ("${CC_VER_MAJOR}", "2") 179 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 180 endif 181 182 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 183 ifeq ($(USE_PRECOMPILED_HEADER),0) 184 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 185 endif 186 187 #------------------------------------------------------------------------ 188 # Linker flags 189 190 # statically link libstdc++.so, work with gcc but ignored by g++ 191 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 192 193 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 194 ifneq ("${CC_VER_MAJOR}", "2") 195 STATIC_LIBGCC += -static-libgcc 196 endif 197 198 ifeq ($(BUILDARCH), ia64) 199 LFLAGS += -Wl,-relax 200 endif 201 202 # Enable linker optimization 203 LFLAGS += -Xlinker -O1 204 205 # If this is a --hash-style=gnu system, use --hash-style=both 206 # The gnu .hash section won't work on some Linux systems like SuSE 10. 207 _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu') 208 ifneq ($(_HAS_HASH_STYLE_GNU),) 209 LDFLAGS_HASH_STYLE = -Wl,--hash-style=both 210 endif 211 LFLAGS += $(LDFLAGS_HASH_STYLE) 212 213 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 214 MAPFLAG = -Xlinker --version-script=FILENAME 215 216 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 217 SONAMEFLAG = -Xlinker -soname=SONAME 218 219 # Build shared library 220 SHARED_FLAG = -shared 221 222 # Keep symbols even they are not used 223 AOUT_FLAGS += -Xlinker -export-dynamic 224 225 #------------------------------------------------------------------------ 226 # Debug flags 227 228 # DEBUG_BINARIES uses full -g debug information for all configs 229 ifeq ($(DEBUG_BINARIES), true) 230 CFLAGS += -g 231 else 232 # Use the stabs format for debugging information (this is the default 233 # on gcc-2.91). It's good enough, has all the information about line 234 # numbers and local variables, and libjvm_g.so is only about 16M. 235 # Change this back to "-g" if you want the most expressive format. 236 # (warning: that could easily inflate libjvm_g.so to 150M!) 237 # Note: The Itanium gcc compiler crashes when using -gstabs. 238 DEBUG_CFLAGS/ia64 = -g 239 DEBUG_CFLAGS/amd64 = -g 240 DEBUG_CFLAGS/arm = -g 241 DEBUG_CFLAGS/ppc = -g 242 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 243 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) 244 DEBUG_CFLAGS += -gstabs 245 endif 246 247 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) 248 FASTDEBUG_CFLAGS/ia64 = -g 249 FASTDEBUG_CFLAGS/amd64 = -g 250 FASTDEBUG_CFLAGS/arm = -g 251 FASTDEBUG_CFLAGS/ppc = -g 252 FASTDEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 253 ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),) 254 FASTDEBUG_CFLAGS += -gstabs 255 endif 256 257 OPT_CFLAGS/ia64 = -g 258 OPT_CFLAGS/amd64 = -g 259 OPT_CFLAGS/arm = -g 260 OPT_CFLAGS/ppc = -g 261 OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH)) 262 ifeq ($(OPT_CFLAGS/$(BUILDARCH)),) 263 OPT_CFLAGS += -gstabs 264 endif 265 endif 266 endif 267 268 # If we are building HEADLESS, pass on to VM 269 # so it can set the java.awt.headless property 270 ifdef HEADLESS 271 CFLAGS += -DHEADLESS 272 endif 273 274 # We are building Embedded for a small device 275 # favor code space over speed 276 ifdef MINIMIZE_RAM_USAGE 277 CFLAGS += -DMINIMIZE_RAM_USAGE 278 endif