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 CC_VER_MICRO := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f3) 43 44 # Check for the versions of C++ and C compilers ($CXX and $CC) used. 45 46 # Get the last thing on the line that looks like x.x+ (x is a digit). 47 COMPILER_REV := \ 48 $(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 49 CC_COMPILER_REV := \ 50 $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 51 52 53 # check for precompiled headers support 54 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 55 # Allow the user to turn off precompiled headers from the command line. 56 ifneq ($(USE_PRECOMPILED_HEADER),0) 57 PRECOMPILED_HEADER_DIR=. 58 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 59 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 60 endif 61 endif 62 63 64 #------------------------------------------------------------------------ 65 # Compiler flags 66 67 # position-independent code 68 PICFLAG = -fPIC 69 70 VM_PICFLAG/LIBJVM = $(PICFLAG) 71 VM_PICFLAG/AOUT = 72 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 73 74 CFLAGS += $(VM_PICFLAG) 75 CFLAGS += -fno-rtti 76 CFLAGS += -fno-exceptions 77 CFLAGS += -D_REENTRANT 78 CFLAGS += -fcheck-new 79 80 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 81 82 ARCHFLAG/sparc = -m32 -mcpu=v9 83 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 84 ARCHFLAG/i486 = -m32 -march=i586 85 ARCHFLAG/amd64 = -m64 -march=k8 86 87 88 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept. 89 ISA_DIR=$(ISA_DIR/$(BUILDARCH)) 90 ISA_DIR/amd64=/amd64 91 ISA_DIR/i486= 92 ISA_DIR/sparcv9=/64 93 94 95 CFLAGS += $(ARCHFLAG) 96 AOUT_FLAGS += $(ARCHFLAG) 97 LFLAGS += $(ARCHFLAG) 98 ASFLAGS += $(ARCHFLAG) 99 100 ifeq ($(BUILDARCH), amd64) 101 ASFLAGS += -march=k8 -march=amd64 102 LFLAGS += -march=k8 103 endif 104 105 106 # Use C++ Interpreter 107 ifdef CC_INTERP 108 CFLAGS += -DCC_INTERP 109 endif 110 111 # Keep temporary files (.ii, .s) 112 ifdef NEED_ASM 113 CFLAGS += -save-temps 114 else 115 CFLAGS += -pipe 116 endif 117 118 119 # Compiler warnings are treated as errors 120 WARNINGS_ARE_ERRORS ?= -Werror 121 122 # Enable these warnings. See 'info gcc' about details on these options 123 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef -Wformat=2 124 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS) 125 126 # Special cases 127 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 128 129 # optimization control flags (Used by fastdebug and release variants) 130 OPT_CFLAGS/NOOPT=-O0 131 OPT_CFLAGS/DEBUG=-O0 132 OPT_CFLAGS/SIZE=-Os 133 OPT_CFLAGS/SPEED=-O3 134 135 OPT_CFLAGS_DEFAULT ?= SPEED 136 137 # Hotspot uses very unstrict aliasing turn this optimization off 138 # This option is added to CFLAGS rather than OPT_CFLAGS 139 # so that OPT_CFLAGS overrides get this option too. 140 CFLAGS += -fno-strict-aliasing 141 142 ifdef OPT_CFLAGS 143 ifneq ("$(origin OPT_CFLAGS)", "command line") 144 $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") 145 endif 146 endif 147 148 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) 149 150 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 151 # if we use expensive-optimizations 152 # Note: all ia64 setting reflect the ones for linux 153 # No actial testing was performed: there is no Solaris on ia64 presently 154 ifeq ($(BUILDARCH), ia64) 155 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations 156 endif 157 158 # Work around some compiler bugs. 159 ifeq ($(USE_CLANG), true) 160 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) 161 OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) 162 endif 163 else 164 # Do not allow GCC 4.1.1 165 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 1 \& $(CC_VER_MICRO) = 1), 1) 166 $(error "GCC $(CC_VER_MAJOR).$(CC_VER_MINOR).$(CC_VER_MICRO) not supported because of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27724") 167 endif 168 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 169 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) 170 OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) 171 endif 172 endif 173 174 # Flags for generating make dependency flags. 175 ifneq ($(CC_VER_MAJOR), 2) 176 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 177 endif 178 179 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 180 ifeq ($(USE_PRECOMPILED_HEADER),0) 181 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 182 endif 183 184 #------------------------------------------------------------------------ 185 # Linker flags 186 187 # statically link libstdc++.so, work with gcc but ignored by g++ 188 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 189 190 191 ifdef USE_GNULD 192 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 193 ifneq ($(CC_VER_MAJOR), 2) 194 STATIC_LIBGCC += -static-libgcc 195 endif 196 197 # Enable linker optimization 198 LFLAGS += -Xlinker -O1 199 200 ifneq (, findstring(debug,$(BUILD_FLAVOR))) 201 # for relocations read-only 202 LFLAGS += -Xlinker -z -Xlinker relro 203 204 ifeq ($(BUILD_FLAVOR), debug) 205 # disable incremental relocations linking 206 LFLAGS += -Xlinker -z -Xlinker now 207 endif 208 endif 209 210 ifeq ($(BUILDARCH), ia64) 211 # Note: all ia64 setting reflect the ones for linux 212 # No actual testing was performed: there is no Solaris on ia64 presently 213 LFLAGS += -Wl,-relax 214 endif 215 216 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 217 MAPFLAG = -Xlinker --version-script=FILENAME 218 else 219 MAPFLAG = -Xlinker -M -Xlinker FILENAME 220 endif 221 222 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 223 SONAMEFLAG = -Xlinker -soname=SONAME 224 225 # Build shared library 226 SHARED_FLAG = -shared 227 228 #------------------------------------------------------------------------ 229 # Debug flags 230 231 # Allow no optimizations. 232 DEBUG_CFLAGS=-O0 233 234 # Enable debug symbols 235 DEBUG_CFLAGS += -g 236 237 # Enable bounds checking. 238 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1" 239 # stack smashing checks. 240 DEBUG_CFLAGS += -fstack-protector-all --param ssp-buffer-size=1 241 endif