1 # 2 # Copyright (c) 1998, 2013, 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 CXX = g++ 31 CC = gcc 32 AS = $(CC) -c 33 MCS = /usr/ccs/bin/mcs 34 endif 35 36 Compiler = gcc 37 38 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only 39 # prints the numbers (e.g. "2.95", "3.2.1") 40 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 41 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 42 43 # Check for the versions of C++ and C compilers ($CXX and $CC) used. 44 45 # Get the last thing on the line that looks like x.x+ (x is a digit). 46 COMPILER_REV := \ 47 $(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 48 CC_COMPILER_REV := \ 49 $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 50 51 52 # check for precompiled headers support 53 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 54 # Allow the user to turn off precompiled headers from the command line. 55 ifneq ($(USE_PRECOMPILED_HEADER),0) 56 PRECOMPILED_HEADER_DIR=. 57 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 58 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 59 endif 60 endif 61 62 63 #------------------------------------------------------------------------ 64 # Compiler flags 65 66 # position-independent code 67 PICFLAG = -fPIC 68 69 VM_PICFLAG/LIBJVM = $(PICFLAG) 70 VM_PICFLAG/AOUT = 71 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 72 73 CFLAGS += $(VM_PICFLAG) 74 CFLAGS += -fno-rtti 75 CFLAGS += -fno-exceptions 76 CFLAGS += -D_REENTRANT 77 CFLAGS += -fcheck-new 78 79 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 80 81 ARCHFLAG/sparc = -m32 -mcpu=v9 82 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 83 ARCHFLAG/i486 = -m32 -march=i586 84 ARCHFLAG/amd64 = -m64 -march=k8 85 86 87 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept. 88 ISA_DIR=$(ISA_DIR/$(BUILDARCH)) 89 ISA_DIR/amd64=/amd64 90 ISA_DIR/i486= 91 ISA_DIR/sparcv9=/64 92 93 94 CFLAGS += $(ARCHFLAG) 95 AOUT_FLAGS += $(ARCHFLAG) 96 LFLAGS += $(ARCHFLAG) 97 ASFLAGS += $(ARCHFLAG) 98 99 ifeq ($(BUILDARCH), amd64) 100 ASFLAGS += -march=k8 -march=amd64 101 LFLAGS += -march=k8 102 endif 103 104 105 # Use C++ Interpreter 106 ifdef CC_INTERP 107 CFLAGS += -DCC_INTERP 108 endif 109 110 # Keep temporary files (.ii, .s) 111 ifdef NEED_ASM 112 CFLAGS += -save-temps 113 else 114 CFLAGS += -pipe 115 endif 116 117 118 # Compiler warnings are treated as errors 119 WARNINGS_ARE_ERRORS = -Werror 120 121 # Enable these warnings. See 'info gcc' about details on these options 122 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef -Wformat=2 123 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS) 124 125 # Special cases 126 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 127 128 # optimization control flags (Used by fastdebug and release variants) 129 OPT_CFLAGS/NOOPT=-O0 130 OPT_CFLAGS/DEBUG=-O0 131 OPT_CFLAGS/SIZE=-Os 132 OPT_CFLAGS/SPEED=-O3 133 134 OPT_CFLAGS_DEFAULT ?= SPEED 135 136 # Hotspot uses very unstrict aliasing turn this optimization off 137 # This option is added to CFLAGS rather than OPT_CFLAGS 138 # so that OPT_CFLAGS overrides get this option too. 139 CFLAGS += -fno-strict-aliasing 140 141 ifdef OPT_CFLAGS 142 ifneq ("$(origin OPT_CFLAGS)", "command line") 143 $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") 144 endif 145 endif 146 147 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) 148 149 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 150 # if we use expensive-optimizations 151 # Note: all ia64 setting reflect the ones for linux 152 # No actial testing was performed: there is no Solaris on ia64 presently 153 ifeq ($(BUILDARCH), ia64) 154 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations 155 endif 156 157 # Work around some compiler bugs. 158 ifeq ($(USE_CLANG), true) 159 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) 160 OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) 161 endif 162 else 163 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 164 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) 165 OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) 166 endif 167 endif 168 169 # Flags for generating make dependency flags. 170 ifneq ($(CC_VER_MAJOR), 2) 171 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 172 endif 173 174 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 175 ifeq ($(USE_PRECOMPILED_HEADER),0) 176 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 177 endif 178 179 #------------------------------------------------------------------------ 180 # Linker flags 181 182 # statically link libstdc++.so, work with gcc but ignored by g++ 183 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 184 185 186 ifdef USE_GNULD 187 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 188 ifneq ($(CC_VER_MAJOR), 2) 189 STATIC_LIBGCC += -static-libgcc 190 endif 191 192 # Enable linker optimization 193 LFLAGS += -Xlinker -O1 194 195 ifneq (, findstring(debug,$(BUILD_FLAVOR))) 196 # for relocations read-only 197 LFLAGS += -Xlinker -z -Xlinker relro 198 199 ifeq ($(BUILD_FLAVOR), debug) 200 # disable incremental relocations linking 201 LFLAGS += -Xlinker -z -Xlinker now 202 endif 203 endif 204 205 ifeq ($(BUILDARCH), ia64) 206 # Note: all ia64 setting reflect the ones for linux 207 # No actual testing was performed: there is no Solaris on ia64 presently 208 LFLAGS += -Wl,-relax 209 endif 210 211 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 212 MAPFLAG = -Xlinker --version-script=FILENAME 213 else 214 MAPFLAG = -Xlinker -M -Xlinker FILENAME 215 endif 216 217 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 218 SONAMEFLAG = -Xlinker -soname=SONAME 219 220 # Build shared library 221 SHARED_FLAG = -shared 222 223 #------------------------------------------------------------------------ 224 # Debug flags 225 226 # Allow no optimizations. 227 DEBUG_CFLAGS=-O0 228 229 # Use the stabs format for debugging information (this is the default 230 # on gcc-2.91). It's good enough, has all the information about line 231 # numbers and local variables, and libjvm.so is only about 16M. 232 # Change this back to "-g" if you want the most expressive format. 233 # (warning: that could easily inflate libjvm.so to 150M!) 234 # Note: The Itanium gcc compiler crashes when using -gstabs. 235 DEBUG_CFLAGS/ia64 = -g 236 DEBUG_CFLAGS/amd64 = -g 237 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 238 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) 239 DEBUG_CFLAGS += -gstabs 240 endif 241 242 # Enable bounds checking. 243 # _FORTIFY_SOURCE appears in GCC 4.0+ 244 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1" 245 # compile time size bounds checks 246 FASTDEBUG_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 247 248 # and runtime size bounds checks and paranoid stack smashing checks. 249 DEBUG_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-all --param ssp-buffer-size=1 250 endif