1 # 2 # Copyright (c) 1999, 2015, 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 = $(shell uname -s) 26 27 #------------------------------------------------------------------------ 28 # CC, CXX & AS 29 30 # If a SPEC is not set already, then use these defaults. 31 ifeq ($(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 = $(CC) -c 84 endif 85 86 ifeq ($(OS_VENDOR), Darwin) 87 ifeq ($(DSYMUTIL),) 88 DSYMUTIL=dsymutil 89 endif 90 endif 91 92 ifeq ($(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) 95 else 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 $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) 100 endif 101 102 ifeq ($(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/loopTransform.o = $(PCH_FLAG/NO_PCH) 149 PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH) 150 PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH) 151 PCH_FLAG/unsafe.o = $(PCH_FLAG/NO_PCH) 152 153 endif 154 else # ($(USE_CLANG), true) 155 # check for precompiled headers support 156 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" 157 # Allow the user to turn off precompiled headers from the command line. 158 ifneq ($(USE_PRECOMPILED_HEADER),0) 159 PRECOMPILED_HEADER_DIR=. 160 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp 161 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch 162 endif 163 endif 164 endif 165 166 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 167 ifeq ($(USE_PRECOMPILED_HEADER),0) 168 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 169 endif 170 171 #------------------------------------------------------------------------ 172 # Compiler flags 173 174 # position-independent code 175 PICFLAG = -fPIC 176 177 VM_PICFLAG/LIBJVM = $(PICFLAG) 178 VM_PICFLAG/AOUT = 179 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) 180 181 ifeq ($(JVM_VARIANT_ZERO), true) 182 CFLAGS += $(LIBFFI_CFLAGS) 183 endif 184 ifeq ($(JVM_VARIANT_ZEROSHARK), true) 185 CFLAGS += $(LIBFFI_CFLAGS) 186 CFLAGS += $(LLVM_CFLAGS) 187 endif 188 189 ifeq ($(BUILD_STATIC),true) 190 CXXFLAGS += -DSTATIC_BUILD 191 CFLAGS += -DSTATIC_BUILD 192 else 193 CFLAGS += $(VM_PICFLAG) 194 endif 195 196 CFLAGS += -fno-rtti 197 CFLAGS += -fno-exceptions 198 ifeq ($(USE_CLANG),) 199 CFLAGS += -pthread 200 CFLAGS += -fcheck-new 201 # version 4 and above support fvisibility=hidden (matches jni_x86.h file) 202 # except 4.1.2 gives pointless warnings that can't be disabled (afaik) 203 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 204 CFLAGS += -fvisibility=hidden 205 endif 206 else 207 CFLAGS += -fvisibility=hidden 208 endif 209 210 ifeq ($(USE_CLANG), true) 211 # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm' 212 # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment') 213 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0" 214 STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16 215 else 216 STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16 217 endif 218 endif 219 220 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) 221 ARCHFLAG/i486 = -m32 -march=i586 222 ARCHFLAG/amd64 = -m64 $(STACK_ALIGNMENT_OPT) 223 ARCHFLAG/ia64 = 224 ARCHFLAG/sparc = -m32 -mcpu=v9 225 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 226 ARCHFLAG/zero = $(ZERO_ARCHFLAG) 227 228 # Darwin-specific build flags 229 ifeq ($(OS_VENDOR), Darwin) 230 # Ineffecient 16-byte stack re-alignment on Darwin/IA32 231 ARCHFLAG/i486 += -mstackrealign 232 endif 233 234 CFLAGS += $(ARCHFLAG) 235 AOUT_FLAGS += $(ARCHFLAG) 236 LFLAGS += $(ARCHFLAG) 237 ASFLAGS += $(ARCHFLAG) 238 239 ifdef E500V2 240 CFLAGS += -DE500V2 241 endif 242 243 # Use C++ Interpreter 244 ifdef CC_INTERP 245 CFLAGS += -DCC_INTERP 246 endif 247 248 # Keep temporary files (.ii, .s) 249 ifdef NEED_ASM 250 CFLAGS += -save-temps 251 else 252 CFLAGS += -pipe 253 endif 254 255 # Compiler warnings are treated as errors 256 ifneq ($(COMPILER_WARNINGS_FATAL),false) 257 WARNINGS_ARE_ERRORS = -Werror 258 endif 259 260 ifeq ($(USE_CLANG), true) 261 # However we need to clean the code up before we can unrestrictedly enable this option with Clang 262 WARNINGS_ARE_ERRORS += -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses 263 WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-compare 264 # Not yet supported by clang in Xcode 4.6.2 265 # WARNINGS_ARE_ERRORS += -Wno-tautological-constant-out-of-range-compare 266 WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess 267 WARNINGS_ARE_ERRORS += -Wno-empty-body 268 endif 269 270 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wformat=2 271 272 ifeq ($(USE_CLANG),) 273 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit 274 # conversions which might affect the values. Only enable it in earlier versions. 275 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0" 276 WARNINGS_FLAGS += -Wconversion 277 endif 278 endif 279 280 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS) 281 # Special cases 282 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 283 # XXXDARWIN: for _dyld_bind_fully_image_containing_address 284 ifeq ($(OS_VENDOR), Darwin) 285 CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations 286 endif 287 288 # optimization control flags (Used by fastdebug and release variants) 289 OPT_CFLAGS/NOOPT=-O0 290 OPT_CFLAGS/DEBUG=-O0 291 OPT_CFLAGS/SIZE=-Os 292 OPT_CFLAGS/SPEED=-O3 293 294 ifeq ($(OS_VENDOR), Darwin) 295 # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy 296 # <https://wiki.openjdk.java.net/display/MacOSXPort/Compiler+Errata> 297 OPT_CFLAGS_DEFAULT ?= SIZE 298 else 299 OPT_CFLAGS_DEFAULT ?= SPEED 300 endif 301 302 # Hotspot uses very unstrict aliasing turn this optimization off 303 # This option is added to CFLAGS rather than OPT_CFLAGS 304 # so that OPT_CFLAGS overrides get this option too. 305 CFLAGS += -fno-strict-aliasing 306 307 ifdef OPT_CFLAGS 308 ifneq ("$(origin OPT_CFLAGS)", "command line") 309 $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.") 310 endif 311 endif 312 313 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS) 314 315 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 316 # if we use expensive-optimizations 317 ifeq ($(BUILDARCH), ia64) 318 OPT_CFLAGS += -fno-expensive-optimizations 319 endif 320 321 # Work around some compiler bugs. 322 ifeq ($(USE_CLANG), true) 323 # Clang <= 6.1 324 ifeq ($(shell expr \ 325 $(CC_VER_MAJOR) \< 6 \| \ 326 \( $(CC_VER_MAJOR) = 6 \& $(CC_VER_MINOR) \<= 1 \) \ 327 ), 1) 328 OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT) 329 OPT_CFLAGS/unsafe.o += -O1 330 else 331 $(error "Update compiler workarounds for Clang $(CC_VER_MAJOR).$(CC_VER_MINOR)") 332 endif 333 else 334 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 335 ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1) 336 OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT) 337 endif 338 endif 339 340 # Flags for generating make dependency flags. 341 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 342 ifeq ($(USE_CLANG),) 343 ifneq ($(CC_VER_MAJOR), 2) 344 DEPFLAGS += -fpch-deps 345 endif 346 endif 347 348 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp. 349 ifeq ($(USE_PRECOMPILED_HEADER),0) 350 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER 351 endif 352 353 ifeq ($(OS_VENDOR), Darwin) 354 # Setting these parameters makes it an error to link to macosx APIs that are 355 # newer than the given OS version and makes the linked binaries compatible even 356 # if built on a newer version of the OS. 357 # The expected format is X.Y.Z 358 ifeq ($(MACOSX_VERSION_MIN),) 359 MACOSX_VERSION_MIN=10.7.0 360 endif 361 # The macro takes the version with no dots, ex: 1070 362 CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \ 363 -mmacosx-version-min=$(MACOSX_VERSION_MIN) 364 LDFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN) 365 endif 366 367 368 #------------------------------------------------------------------------ 369 # Assembler flags 370 371 # Enforce prerpocessing of .s files 372 ASFLAGS += -x assembler-with-cpp 373 374 #------------------------------------------------------------------------ 375 # Linker flags 376 377 # statically link libstdc++.so, work with gcc but ignored by g++ 378 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic 379 380 # Ensure use libstdc++ on clang, not libc++ 381 ifeq ($(USE_CLANG), true) 382 LFLAGS += -stdlib=libstdc++ 383 endif 384 385 ifeq ($(USE_CLANG),) 386 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. 387 ifneq ($(CC_VER_MAJOR), 2) 388 STATIC_LIBGCC += -static-libgcc 389 endif 390 391 ifneq ($(OS_VENDOR), Darwin) 392 ifneq (, findstring(debug,$(BUILD_FLAVOR))) 393 # for relocations read-only 394 LFLAGS += -Xlinker -z -Xlinker relro 395 396 ifeq ($(BUILD_FLAVOR), debug) 397 # disable incremental relocations linking 398 LFLAGS += -Xlinker -z -Xlinker now 399 endif 400 endif 401 endif 402 403 ifeq ($(BUILDARCH), ia64) 404 LFLAGS += -Wl,-relax 405 endif 406 endif 407 408 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. 409 MAPFLAG = -Xlinker --version-script=FILENAME 410 411 # 412 # Shared Library 413 # 414 ifeq ($(OS_VENDOR), Darwin) 415 # Standard linker flags 416 LFLAGS += 417 418 # The apple linker has its own variant of mapfiles/version-scripts 419 MAPFLAG = -Xlinker -exported_symbols_list -Xlinker FILENAME 420 421 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 422 SONAMEFLAG = 423 424 # Build shared library 425 SHARED_FLAG = -Wl,-install_name,@rpath/$(@F) -dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $(VM_PICFLAG) 426 427 # Keep symbols even they are not used 428 #AOUT_FLAGS += -Xlinker -export-dynamic 429 else 430 # Enable linker optimization 431 LFLAGS += -Xlinker -O1 432 433 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj 434 SONAMEFLAG = -Xlinker -soname=SONAME 435 436 # Build shared library 437 SHARED_FLAG = -shared $(VM_PICFLAG) 438 439 # Keep symbols even they are not used 440 AOUT_FLAGS += -Xlinker -export-dynamic 441 endif 442 443 #------------------------------------------------------------------------ 444 # Debug flags 445 446 ifeq ($(USE_CLANG), true) 447 # Restrict the debug information created by Clang to avoid 448 # too big object files and speed the build up a little bit 449 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 450 CFLAGS += -flimit-debug-info 451 endif 452 453 # Allow no optimizations. 454 DEBUG_CFLAGS=-O0 455 456 # DEBUG_BINARIES uses full -g debug information for all configs 457 ifeq ($(DEBUG_BINARIES), true) 458 CFLAGS += -g 459 else 460 # Use the stabs format for debugging information (this is the default 461 # on gcc-2.91). It's good enough, has all the information about line 462 # numbers and local variables, and libjvm.so is only about 16M. 463 # Change this back to "-g" if you want the most expressive format. 464 # (warning: that could easily inflate libjvm.so to 150M!) 465 # Note: The Itanium gcc compiler crashes when using -gstabs. 466 DEBUG_CFLAGS/ia64 = -g 467 DEBUG_CFLAGS/amd64 = -g 468 DEBUG_CFLAGS/arm = -g 469 DEBUG_CFLAGS/ppc = -g 470 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 471 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) 472 ifeq ($(USE_CLANG), true) 473 # Clang doesn't understand -gstabs 474 DEBUG_CFLAGS += -g 475 else 476 DEBUG_CFLAGS += -gstabs 477 endif 478 endif 479 480 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1) 481 FASTDEBUG_CFLAGS/ia64 = -g 482 FASTDEBUG_CFLAGS/amd64 = -g 483 FASTDEBUG_CFLAGS/arm = -g 484 FASTDEBUG_CFLAGS/ppc = -g 485 FASTDEBUG_CFLAGS += $(FASTDEBUG_CFLAGS/$(BUILDARCH)) 486 ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),) 487 ifeq ($(USE_CLANG), true) 488 # Clang doesn't understand -gstabs 489 FASTDEBUG_CFLAGS += -g 490 else 491 FASTDEBUG_CFLAGS += -gstabs 492 endif 493 endif 494 495 OPT_CFLAGS/ia64 = -g 496 OPT_CFLAGS/amd64 = -g 497 OPT_CFLAGS/arm = -g 498 OPT_CFLAGS/ppc = -g 499 OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH)) 500 ifeq ($(OPT_CFLAGS/$(BUILDARCH)),) 501 ifeq ($(USE_CLANG), true) 502 # Clang doesn't understand -gstabs 503 OPT_CFLAGS += -g 504 else 505 OPT_CFLAGS += -gstabs 506 endif 507 endif 508 endif 509 endif 510 511 ifeq ($(USE_CLANG),) 512 # Enable bounds checking. 513 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1" 514 # stack smashing checks. 515 DEBUG_CFLAGS += -fstack-protector-all --param ssp-buffer-size=1 516 endif 517 endif 518 519 # If we are building HEADLESS, pass on to VM 520 # so it can set the java.awt.headless property 521 ifdef HEADLESS 522 CFLAGS += -DHEADLESS 523 endif 524 525 # We are building Embedded for a small device 526 # favor code space over speed 527 ifdef MINIMIZE_RAM_USAGE 528 CFLAGS += -DMINIMIZE_RAM_USAGE 529 endif