1# 2# Copyright (c) 1999, 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 25OS_VENDOR = $(shell uname -s) 26 27#------------------------------------------------------------------------ 28# CC, CXX & AS 29 30# If a SPEC is not set already, then use these defaults. 31ifeq ($(SPEC),) 32 # When cross-compiling the ALT_COMPILER_PATH points 33 # to the cross-compilation toolset 34 ifdef CROSS_COMPILE_ARCH 35 CXX = $(ALT_COMPILER_PATH)/g++ 36 CC = $(ALT_COMPILER_PATH)/gcc 37 HOSTCXX = g++ 38 HOSTCC = gcc 39 else ifneq ($(OS_VENDOR), Darwin) 40 CXX = g++ 41 CC = gcc 42 HOSTCXX = $(CXX) 43 HOSTCC = $(CC) 44 endif 45 46 # i486 hotspot requires -mstackrealign on Darwin. 47 # llvm-gcc supports this in Xcode 3.2.6 and 4.0. 48 # gcc-4.0 supports this on earlier versions. 49 # Prefer llvm-gcc where available. 50 ifeq ($(OS_VENDOR), Darwin) 51 ifeq ($(origin CXX), default) 52 CXX = llvm-g++ 53 endif 54 ifeq ($(origin CC), default) 55 CC = llvm-gcc 56 endif 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 CXX = $(CXX32) 71 CC = $(CC32) 72 endif 73 74 ifeq ($(USE_CLANG), true) 75 CXX = clang++ 76 CC = clang 77 endif 78 79 HOSTCXX = $(CXX) 80 HOSTCC = $(CC) 81 endif 82 83 AS = $(CC) -c 84endif 85 86ifeq ($(OS_VENDOR), Darwin) 87 ifeq ($(DSYMUTIL),) 88 DSYMUTIL=dsymutil 89 endif 90endif 91 92ifeq ($(USE_CLANG), true) 93 CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1) 94 CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2) 95else 96 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only 97 # prints the numbers (e.g. "2.95", "3.2.1") 98 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) 99 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 100endif 101 102ifeq ($(USE_CLANG), true) 103 # clang has precompiled headers support by default, but the user can switch 104 # it off by using 'USE_PRECOMPILED_HEADER=0'. 105 ifdef LP64 106 ifeq ($(USE_PRECOMPILED_HEADER),) 107 USE_PRECOMPILED_HEADER=1 108 endif 109 else 110 # We don't support precompiled headers on 32-bit builds because there some files are 111 # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make) 112 # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit. 113 USE_PRECOMPILED_HEADER=0 114 endif 115 116 ifeq ($(USE_PRECOMPILED_HEADER),1) 117 118 ifndef LP64 119 $(error " Precompiled Headers only supported on 64-bit platforms!") 120 endif 121 122 PRECOMPILED_HEADER_DIR=. 123 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 124 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch 125 126 PCH_FLAG = -include precompiled.hpp 127 PCH_FLAG/DEFAULT = $(PCH_FLAG) 128 PCH_FLAG/NO_PCH = -DNO_PCH 129 PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@)) 130 131 VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE) 132 VM_PCH_FLAG/AOUT = 133 VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO)) 134 135 # We only use precompiled headers for the JVM build 136 CFLAGS += $(VM_PCH_FLAG) 137 138 # The following files are compiled at various optimization 139 # levels due to optimization issues encountered at the 140 # 'OPT_CFLAGS_DEFAULT' level. The Clang compiler issues a compile 141 # time error if there is an optimization level specification 142 # skew between the PCH file and the C++ file. Especially if the 143 # PCH file is compiled at a higher optimization level than 144 # the C++ file. One solution might be to prepare extra optimization 145 # level specific PCH files for the opt build and use them here, but 146 # it's probably not worth the effort as long as only a few files 147 # need this special handling. 148 PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH) 149 PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH) 150 151 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) 152 PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH) 153 PCH_FLAG/unsafe.o = $(PCH_FLAG/NO_PCH) 154 endif 155 ifeq ($(shell expr $(CC_VER_MAJOR) = 6 \& $(CC_VER_MINOR) = 0), 1) 156 PCH_FLAG/unsafe.o = $(PCH_FLAG/NO_PCH) 157 endif 158 ifeq ($(shell expr $(CC_VER_MAJOR) = 10 \| $(CC_VER_MAJOR) = 11), 1) 159 ifeq ($(BUILDARCH), i486) 160 PCH_FLAG/bitMap.o = $(PCH_FLAG/NO_PCH) 161 endif 162 endif 163 endif 164else # ($(USE_CLANG), true) 165 # check for precompiled headers support 166 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 167 # Allow the user to turn off precompiled headers from the command line. 168 ifneq ($(USE_PRECOMPILED_HEADER),0) 169 PRECOMPILED_HEADER_DIR=. 170 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 171 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 172 endif 173 endif 174endif 175 176# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 177ifeq ($(USE_PRECOMPILED_HEADER),0) 178 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 179endif 180 181# Allow for where third party packages are located 182CFLAGS+= -DPACKAGE_PATH=\"$(PACKAGE_PATH)\" 183 184#------------------------------------------------------------------------ 185# Compiler flags 186 187# position-independent code 188PICFLAG = -fPIC 189 190VM_PICFLAG/LIBJVM = $(PICFLAG) 191VM_PICFLAG/AOUT = 192VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 193 194ifeq ($(JVM_VARIANT_ZERO), true) 195 CFLAGS += $(LIBFFI_CFLAGS) 196endif 197ifeq ($(JVM_VARIANT_ZEROSHARK), true) 198 CFLAGS += $(LIBFFI_CFLAGS) 199 CFLAGS += $(LLVM_CFLAGS) 200endif 201CFLAGS += $(VM_PICFLAG) 202CFLAGS += -fno-rtti 203CFLAGS += -fno-exceptions 204ifeq ($(USE_CLANG),) 205 CFLAGS += -pthread 206 CFLAGS += -fcheck-new 207 # version 4 and above support fvisibility=hidden (matches jni_x86.h file) 208 # except 4.1.2 gives pointless warnings that can't be disabled (afaik) 209 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 210 CFLAGS += -fvisibility=hidden 211 endif 212else 213 ifneq ($(OS_VENDOR), Darwin) 214 CFLAGS += -pthread 215 endif 216 CFLAGS += -fvisibility=hidden 217endif 218 219ifeq ($(USE_CLANG), true) 220 STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer 221 ifeq ($(OS_VENDOR), Darwin) 222 # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm' 223 # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment') 224 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0" 225 STACK_ALIGNMENT_OPT += -mstack-alignment=16 226 else 227 STACK_ALIGNMENT_OPT += -mllvm -stack-alignment=16 228 endif 229 endif 230endif 231 232ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 233ARCHFLAG/i486 = -m32 -march=i586 234ARCHFLAG/amd64 = -m64 $(STACK_ALIGNMENT_OPT) 235ARCHFLAG/aarch64 = 236ARCHFLAG/ia64 = 237ARCHFLAG/sparc = -m32 -mcpu=v9 238ARCHFLAG/sparcv9 = -m64 -mcpu=v9 239ARCHFLAG/zero = $(ZERO_ARCHFLAG) 240 241# Darwin-specific build flags 242ifeq ($(OS_VENDOR), Darwin) 243 # Ineffecient 16-byte stack re-alignment on Darwin/IA32 244 ARCHFLAG/i486 += -mstackrealign 245endif 246 247CFLAGS += $(ARCHFLAG) 248AOUT_FLAGS += $(ARCHFLAG) 249LFLAGS += $(ARCHFLAG) 250ASFLAGS += $(ARCHFLAG) 251 252ifeq ($(DEBUG_BINARIES), true) 253 ASFLAGS += $(ASFLAGS_DEBUG_SYMBOLS) 254endif 255 256ifdef E500V2 257CFLAGS += -DE500V2 258endif 259 260# Use C++ Interpreter 261ifdef CC_INTERP 262 CFLAGS += -DCC_INTERP 263endif 264 265# Keep temporary files (.ii, .s) 266ifdef NEED_ASM 267 CFLAGS += -save-temps 268else 269 CFLAGS += -pipe 270endif 271 272# Compiler warnings are treated as errors 273ifneq ($(COMPILER_WARNINGS_FATAL),false) 274 WARNINGS_ARE_ERRORS = -Werror 275endif 276 277ifeq ($(USE_CLANG), true) 278 # However we need to clean the code up before we can unrestrictedly enable this option with Clang 279 WARNINGS_ARE_ERRORS += -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses 280 WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-compare 281# Not yet supported by clang in Xcode 4.6.2 282# WARNINGS_ARE_ERRORS += -Wno-tautological-constant-out-of-range-compare 283 WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess 284 WARNINGS_ARE_ERRORS += -Wno-empty-body 285 WARNINGS_ARE_ERRORS += -Wno-format-nonliteral 286 ifneq "$(shell expr \( $(CC_VER_MAJOR) \>= 6 \))" "0" 287 WARNINGS_ARE_ERRORS += -Wno-undefined-bool-conversion -Wno-expansion-to-defined 288 WARNINGS_ARE_ERRORS += -Wno-undefined-var-template 289 endif 290else 291 WARNINGS_ARE_ERRORS += -Wno-format 292endif 293 294WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wformat=2 295 296ifeq ($(USE_CLANG),) 297 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit 298 # conversions which might affect the values. Only enable it in earlier versions. 299 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 300 WARNINGS_FLAGS += -Wconversion 301 endif 302endif 303 304CFLAGS_WARN/DEFAULT = $(WARNING_FLAGS) $(WARNINGS_ARE_ERRORS) 305# Special cases 306CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 307# XXXDARWIN: for _dyld_bind_fully_image_containing_address 308ifeq ($(OS_VENDOR), Darwin) 309 CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations 310endif 311 312OPT_CFLAGS/SIZE=-Os 313OPT_CFLAGS/SPEED=-O3 314 315# Hotspot uses very unstrict aliasing turn this optimization off 316# This option is added to CFLAGS rather than OPT_CFLAGS 317# so that OPT_CFLAGS overrides get this option too. 318CFLAGS += -fno-strict-aliasing 319 320# The flags to use for an Optimized g++ build 321ifeq ($(OS_VENDOR), Darwin) 322 # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy 323 # <https://wiki.openjdk.java.net/display/MacOSXPort/Compiler+Errata> 324 OPT_CFLAGS_DEFAULT ?= SIZE 325else 326 OPT_CFLAGS_DEFAULT ?= SPEED 327endif 328 329ifdef OPT_CFLAGS 330 ifneq ("$(origin OPT_CFLAGS)", "command line") 331 $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") 332 endif 333endif 334 335OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) 336 337# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 338# if we use expensive-optimizations 339ifeq ($(BUILDARCH), ia64) 340OPT_CFLAGS += -fno-expensive-optimizations 341endif 342 343OPT_CFLAGS/NOOPT=-O0 344 345# Work around some compiler bugs. 346ifeq ($(USE_CLANG), true) 347 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1) 348 OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) 349 OPT_CFLAGS/unsafe.o += -O1 350 endif 351 ifeq ($(shell expr $(CC_VER_MAJOR) = 6 \& $(CC_VER_MINOR) = 0), 1) 352 OPT_CFLAGS/unsafe.o += -O1 353 endif 354 ifeq ($(shell expr $(CC_VER_MAJOR) = 10 \| $(CC_VER_MAJOR) = 11), 1) 355 ifeq ($(BUILDARCH), i486) 356 OPT_CFLAGS/bitMap.o += -O1 357 endif 358 endif 359else 360 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 361 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) 362 OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) 363 endif 364endif 365 366# Flags for generating make dependency flags. 367DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 368ifeq ($(USE_CLANG),) 369 ifneq ($(CC_VER_MAJOR), 2) 370 DEPFLAGS += -fpch-deps 371 endif 372endif 373 374# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 375ifeq ($(USE_PRECOMPILED_HEADER),0) 376CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 377endif 378 379ifeq ($(OS_VENDOR), Darwin) 380 # Setting these parameters makes it an error to link to macosx APIs that are 381 # newer than the given OS version and makes the linked binaries compatible even 382 # if built on a newer version of the OS. 383 # The expected format is X.Y.Z 384 ifeq ($(MACOSX_VERSION_MIN),) 385 MACOSX_VERSION_MIN=10.7.0 386 endif 387 # The macro takes the version with no dots, ex: 1070 388 CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \ 389 -mmacosx-version-min=$(MACOSX_VERSION_MIN) 390 LFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN) 391endif 392 393 394#------------------------------------------------------------------------ 395# Assembler flags 396 397# Enforce prerpocessing of .s files 398ASFLAGS += -x assembler-with-cpp 399 400#------------------------------------------------------------------------ 401# Linker flags 402 403# statically link libstdc++.so, work with gcc but ignored by g++ 404ifeq ($(OS_VENDOR), Darwin) 405 ifeq ($(USE_CLANG), true) 406 STATIC_STDCXX = -Wl,-Bstatic -lc++ -Wl,-Bdynamic 407 else 408 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 409 endif 410else 411 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 412endif 413 414ifeq ($(USE_CLANG),) 415 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 416 ifneq ("${CC_VER_MAJOR}", "2") 417 STATIC_LIBGCC += -static-libgcc 418 endif 419 420 ifeq ($(BUILDARCH), ia64) 421 LFLAGS += -Wl,-relax 422 endif 423endif 424 425# Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 426MAPFLAG = -Xlinker --version-script=FILENAME 427 428LDFLAGS_NO_EXEC_STACK="-Wl,-z,noexecstack" 429 430# 431# Shared Library 432# 433ifeq ($(OS_VENDOR), Darwin) 434 # Standard linker flags 435 LFLAGS += 436 437 # The apple linker has its own variant of mapfiles/version-scripts 438 MAPFLAG = -Xlinker -exported_symbols_list -Xlinker FILENAME 439 440 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 441 SONAMEFLAG = 442 443 # Build shared library 444 SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG) 445 446 # Keep symbols even they are not used 447 #AOUT_FLAGS += -Xlinker -export-dynamic 448else 449 # Enable linker optimization 450 LFLAGS += -Xlinker -O1 451 452 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 453 SONAMEFLAG = -Xlinker -soname=SONAME 454 455 # Build shared library 456 SHARED_FLAG = -shared $(VM_PICFLAG) 457 458 # Keep symbols even they are not used 459 AOUT_FLAGS += -Xlinker -export-dynamic 460endif 461 462#------------------------------------------------------------------------ 463# Debug flags 464 465ifeq ($(USE_CLANG), true) 466 # Restrict the debug information created by Clang to avoid 467 # too big object files and speed the build up a little bit 468 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 469 CFLAGS += -flimit-debug-info 470endif 471 472# Use the stabs format for debugging information (this is the default 473# on gcc-2.91). It's good enough, has all the information about line 474# numbers and local variables, and libjvm.so is only about 16M. 475# Change this back to "-g" if you want the most expressive format. 476# (warning: that could easily inflate libjvm.so to 150M!) 477# Note: The Itanium gcc compiler crashes when using -gstabs. 478# Don't use stabs on gcc>=4.8 because it is incompatible with 479# pre-compiled-headers 480ifeq ($(USE_CLANG), true) 481 # Clang doesn't understand -gstabs 482 STABS_CFLAGS += -g 483else 484 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1" 485 # GCC >= 4.8 486 STABS_CFLAGS += -g 487 else 488 STABS_CFLAGS/ia64 = -g 489 STABS_CFLAGS/arm = -g 490 STABS_CFLAGS/ppc = -g 491 STABS_CFLAGS/amd64 = -g 492 STABS_CFLAGS/aarch64 = -g 493 ifeq ($(STABS_CFLAGS/$(BUILDARCH)),) 494 STABS_CFLAGS += -gstabs 495 else 496 STABS_CFLAGS += $(STABS_CFLAGS/$(BUILDARCH)) 497 endif 498 endif 499endif 500 501# DEBUG_BINARIES uses full -g debug information for all configs 502ifeq ($(DEBUG_BINARIES), true) 503 CFLAGS += -g 504else 505 DEBUG_CFLAGS += ${STABS_CFLAGS} 506 507 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) 508 FASTDEBUG_CFLAGS += ${STABS_CFLAGS} 509 510 OPT_CFLAGS += ${STABS_CFLAGS} 511 endif 512endif 513 514# If we are building HEADLESS, pass on to VM 515# so it can set the java.awt.headless property 516ifdef HEADLESS 517CFLAGS += -DHEADLESS 518endif 519 520# We are building Embedded for a small device 521# favor code space over speed 522ifdef MINIMIZE_RAM_USAGE 523CFLAGS += -DMINIMIZE_RAM_USAGE 524endif 525