platform.m4 revision 1120:ba5645f2735b
1# 2# Copyright (c) 2011, 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. Oracle designates this 8# particular file as subject to the "Classpath" exception as provided 9# by Oracle in the LICENSE file that accompanied this code. 10# 11# This code is distributed in the hope that it will be useful, but WITHOUT 12# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14# version 2 for more details (a copy is included in the LICENSE file that 15# accompanied this code). 16# 17# You should have received a copy of the GNU General Public License version 18# 2 along with this work; if not, write to the Free Software Foundation, 19# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20# 21# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22# or visit www.oracle.com if you need additional information or have any 23# questions. 24# 25 26# Support macro for PLATFORM_EXTRACT_TARGET_AND_BUILD. 27# Converts autoconf style CPU name to OpenJDK style, into 28# VAR_CPU, VAR_CPU_ARCH, VAR_CPU_BITS and VAR_CPU_ENDIAN. 29AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU], 30[ 31 # First argument is the cpu name from the trip/quad 32 case "$1" in 33 x86_64) 34 VAR_CPU=x86_64 35 VAR_CPU_ARCH=x86 36 VAR_CPU_BITS=64 37 VAR_CPU_ENDIAN=little 38 ;; 39 i?86) 40 VAR_CPU=x86 41 VAR_CPU_ARCH=x86 42 VAR_CPU_BITS=32 43 VAR_CPU_ENDIAN=little 44 ;; 45 arm*) 46 VAR_CPU=arm 47 VAR_CPU_ARCH=arm 48 VAR_CPU_BITS=32 49 VAR_CPU_ENDIAN=little 50 ;; 51 powerpc) 52 VAR_CPU=ppc 53 VAR_CPU_ARCH=ppc 54 VAR_CPU_BITS=32 55 VAR_CPU_ENDIAN=big 56 ;; 57 powerpc64) 58 VAR_CPU=ppc64 59 VAR_CPU_ARCH=ppc 60 VAR_CPU_BITS=64 61 VAR_CPU_ENDIAN=big 62 ;; 63 powerpc64le) 64 VAR_CPU=ppc64 65 VAR_CPU_ARCH=ppc 66 VAR_CPU_BITS=64 67 VAR_CPU_ENDIAN=little 68 ;; 69 s390) 70 VAR_CPU=s390 71 VAR_CPU_ARCH=s390 72 VAR_CPU_BITS=32 73 VAR_CPU_ENDIAN=big 74 ;; 75 s390x) 76 VAR_CPU=s390x 77 VAR_CPU_ARCH=s390 78 VAR_CPU_BITS=64 79 VAR_CPU_ENDIAN=big 80 ;; 81 sparc) 82 VAR_CPU=sparc 83 VAR_CPU_ARCH=sparc 84 VAR_CPU_BITS=32 85 VAR_CPU_ENDIAN=big 86 ;; 87 sparcv9|sparc64) 88 VAR_CPU=sparcv9 89 VAR_CPU_ARCH=sparc 90 VAR_CPU_BITS=64 91 VAR_CPU_ENDIAN=big 92 ;; 93 *) 94 AC_MSG_ERROR([unsupported cpu $1]) 95 ;; 96 esac 97]) 98 99# Support macro for PLATFORM_EXTRACT_TARGET_AND_BUILD. 100# Converts autoconf style OS name to OpenJDK style, into 101# VAR_OS and VAR_OS_API. 102AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_OS], 103[ 104 case "$1" in 105 *linux*) 106 VAR_OS=linux 107 VAR_OS_API=posix 108 VAR_OS_ENV=linux 109 ;; 110 *solaris*) 111 VAR_OS=solaris 112 VAR_OS_API=posix 113 VAR_OS_ENV=solaris 114 ;; 115 *darwin*) 116 VAR_OS=macosx 117 VAR_OS_API=posix 118 VAR_OS_ENV=macosx 119 ;; 120 *bsd*) 121 VAR_OS=bsd 122 VAR_OS_API=posix 123 VAR_OS_ENV=bsd 124 ;; 125 *cygwin*) 126 VAR_OS=windows 127 VAR_OS_API=winapi 128 VAR_OS_ENV=windows.cygwin 129 ;; 130 *mingw*) 131 VAR_OS=windows 132 VAR_OS_API=winapi 133 VAR_OS_ENV=windows.msys 134 ;; 135 *aix*) 136 VAR_OS=aix 137 VAR_OS_API=posix 138 VAR_OS_ENV=aix 139 ;; 140 *) 141 AC_MSG_ERROR([unsupported operating system $1]) 142 ;; 143 esac 144]) 145 146# Expects $host_os $host_cpu $build_os and $build_cpu 147# and $with_target_bits to have been setup! 148# 149# Translate the standard triplet(quadruplet) definition 150# of the target/build system into OPENJDK_TARGET_OS, OPENJDK_TARGET_CPU, 151# OPENJDK_BUILD_OS, etc. 152AC_DEFUN([PLATFORM_EXTRACT_TARGET_AND_BUILD], 153[ 154 # Copy the autoconf trip/quadruplet verbatim to OPENJDK_TARGET_AUTOCONF_NAME 155 # (from the autoconf "host") and OPENJDK_BUILD_AUTOCONF_NAME 156 # Note that we might later on rewrite e.g. OPENJDK_TARGET_CPU due to reduced build, 157 # but this will not change the value of OPENJDK_TARGET_AUTOCONF_NAME. 158 OPENJDK_TARGET_AUTOCONF_NAME="$host" 159 OPENJDK_BUILD_AUTOCONF_NAME="$build" 160 AC_SUBST(OPENJDK_TARGET_AUTOCONF_NAME) 161 AC_SUBST(OPENJDK_BUILD_AUTOCONF_NAME) 162 163 # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables. 164 PLATFORM_EXTRACT_VARS_FROM_OS($build_os) 165 PLATFORM_EXTRACT_VARS_FROM_CPU($build_cpu) 166 # ..and setup our own variables. (Do this explicitely to facilitate searching) 167 OPENJDK_BUILD_OS="$VAR_OS" 168 OPENJDK_BUILD_OS_API="$VAR_OS_API" 169 OPENJDK_BUILD_OS_ENV="$VAR_OS_ENV" 170 OPENJDK_BUILD_CPU="$VAR_CPU" 171 OPENJDK_BUILD_CPU_ARCH="$VAR_CPU_ARCH" 172 OPENJDK_BUILD_CPU_BITS="$VAR_CPU_BITS" 173 OPENJDK_BUILD_CPU_ENDIAN="$VAR_CPU_ENDIAN" 174 AC_SUBST(OPENJDK_BUILD_OS) 175 AC_SUBST(OPENJDK_BUILD_OS_API) 176 AC_SUBST(OPENJDK_BUILD_CPU) 177 AC_SUBST(OPENJDK_BUILD_CPU_ARCH) 178 AC_SUBST(OPENJDK_BUILD_CPU_BITS) 179 AC_SUBST(OPENJDK_BUILD_CPU_ENDIAN) 180 181 AC_MSG_CHECKING([openjdk-build os-cpu]) 182 AC_MSG_RESULT([$OPENJDK_BUILD_OS-$OPENJDK_BUILD_CPU]) 183 184 # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables. 185 PLATFORM_EXTRACT_VARS_FROM_OS($host_os) 186 PLATFORM_EXTRACT_VARS_FROM_CPU($host_cpu) 187 # ... and setup our own variables. (Do this explicitely to facilitate searching) 188 OPENJDK_TARGET_OS="$VAR_OS" 189 OPENJDK_TARGET_OS_API="$VAR_OS_API" 190 OPENJDK_TARGET_OS_ENV="$VAR_OS_ENV" 191 OPENJDK_TARGET_CPU="$VAR_CPU" 192 OPENJDK_TARGET_CPU_ARCH="$VAR_CPU_ARCH" 193 OPENJDK_TARGET_CPU_BITS="$VAR_CPU_BITS" 194 OPENJDK_TARGET_CPU_ENDIAN="$VAR_CPU_ENDIAN" 195 AC_SUBST(OPENJDK_TARGET_OS) 196 AC_SUBST(OPENJDK_TARGET_OS_API) 197 AC_SUBST(OPENJDK_TARGET_CPU) 198 AC_SUBST(OPENJDK_TARGET_CPU_ARCH) 199 AC_SUBST(OPENJDK_TARGET_CPU_BITS) 200 AC_SUBST(OPENJDK_TARGET_CPU_ENDIAN) 201 202 AC_MSG_CHECKING([openjdk-target os-cpu]) 203 AC_MSG_RESULT([$OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU]) 204]) 205 206# Check if a reduced build (32-bit on 64-bit platforms) is requested, and modify behaviour 207# accordingly. Must be done after setting up build and target system, but before 208# doing anything else with these values. 209AC_DEFUN([PLATFORM_SETUP_TARGET_CPU_BITS], 210[ 211 AC_ARG_WITH(target-bits, [AS_HELP_STRING([--with-target-bits], 212 [build 32-bit or 64-bit binaries (for platforms that support it), e.g. --with-target-bits=32 @<:@guessed@:>@])]) 213 214 # We have three types of compiles: 215 # native == normal compilation, target system == build system 216 # cross == traditional cross compilation, target system != build system; special toolchain needed 217 # reduced == using native compilers, but with special flags (e.g. -m32) to produce 32-bit builds on 64-bit machines 218 # 219 if test "x$OPENJDK_BUILD_AUTOCONF_NAME" != "x$OPENJDK_TARGET_AUTOCONF_NAME"; then 220 # We're doing a proper cross-compilation 221 COMPILE_TYPE="cross" 222 else 223 COMPILE_TYPE="native" 224 fi 225 226 if test "x$with_target_bits" != x; then 227 if test "x$COMPILE_TYPE" = "xcross"; then 228 AC_MSG_ERROR([It is not possible to combine --with-target-bits=X and proper cross-compilation. Choose either.]) 229 fi 230 231 if test "x$with_target_bits" = x32 && test "x$OPENJDK_TARGET_CPU_BITS" = x64; then 232 # A reduced build is requested 233 COMPILE_TYPE="reduced" 234 OPENJDK_TARGET_CPU_BITS=32 235 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then 236 OPENJDK_TARGET_CPU=x86 237 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then 238 OPENJDK_TARGET_CPU=sparc 239 else 240 AC_MSG_ERROR([Reduced build (--with-target-bits=32) is only supported on x86_64 and sparcv9]) 241 fi 242 elif test "x$with_target_bits" = x64 && test "x$OPENJDK_TARGET_CPU_BITS" = x32; then 243 AC_MSG_ERROR([It is not possible to use --with-target-bits=64 on a 32 bit system. Use proper cross-compilation instead.]) 244 elif test "x$with_target_bits" = "x$OPENJDK_TARGET_CPU_BITS"; then 245 AC_MSG_NOTICE([--with-target-bits are set to build platform address size; argument has no meaning]) 246 else 247 AC_MSG_ERROR([--with-target-bits can only be 32 or 64, you specified $with_target_bits!]) 248 fi 249 fi 250 AC_SUBST(COMPILE_TYPE) 251 252 AC_MSG_CHECKING([compilation type]) 253 AC_MSG_RESULT([$COMPILE_TYPE]) 254]) 255 256# Setup the legacy variables, for controlling the old makefiles. 257# 258AC_DEFUN([PLATFORM_SETUP_LEGACY_VARS], 259[ 260 # Also store the legacy naming of the cpu. 261 # Ie i586 and amd64 instead of x86 and x86_64 262 OPENJDK_TARGET_CPU_LEGACY="$OPENJDK_TARGET_CPU" 263 if test "x$OPENJDK_TARGET_CPU" = xx86; then 264 OPENJDK_TARGET_CPU_LEGACY="i586" 265 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 266 # On all platforms except MacOSX replace x86_64 with amd64. 267 OPENJDK_TARGET_CPU_LEGACY="amd64" 268 fi 269 AC_SUBST(OPENJDK_TARGET_CPU_LEGACY) 270 271 # And the second legacy naming of the cpu. 272 # Ie i386 and amd64 instead of x86 and x86_64. 273 OPENJDK_TARGET_CPU_LEGACY_LIB="$OPENJDK_TARGET_CPU" 274 if test "x$OPENJDK_TARGET_CPU" = xx86; then 275 OPENJDK_TARGET_CPU_LEGACY_LIB="i386" 276 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 277 OPENJDK_TARGET_CPU_LEGACY_LIB="amd64" 278 fi 279 AC_SUBST(OPENJDK_TARGET_CPU_LEGACY_LIB) 280 281 # This is the name of the cpu (but using i386 and amd64 instead of 282 # x86 and x86_64, respectively), preceeded by a /, to be used when 283 # locating libraries. On macosx, it's empty, though. 284 OPENJDK_TARGET_CPU_LIBDIR="/$OPENJDK_TARGET_CPU_LEGACY_LIB" 285 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 286 OPENJDK_TARGET_CPU_LIBDIR="" 287 fi 288 AC_SUBST(OPENJDK_TARGET_CPU_LIBDIR) 289 290 # OPENJDK_TARGET_CPU_ISADIR is normally empty. On 64-bit Solaris systems, it is set to 291 # /amd64 or /sparcv9. This string is appended to some library paths, like this: 292 # /usr/lib${OPENJDK_TARGET_CPU_ISADIR}/libexample.so 293 OPENJDK_TARGET_CPU_ISADIR="" 294 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 295 if test "x$OPENJDK_TARGET_CPU" = xx86_64; then 296 OPENJDK_TARGET_CPU_ISADIR="/amd64" 297 elif test "x$OPENJDK_TARGET_CPU" = xsparcv9; then 298 OPENJDK_TARGET_CPU_ISADIR="/sparcv9" 299 fi 300 fi 301 AC_SUBST(OPENJDK_TARGET_CPU_ISADIR) 302 303 # Setup OPENJDK_TARGET_CPU_OSARCH, which is used to set the os.arch Java system property 304 OPENJDK_TARGET_CPU_OSARCH="$OPENJDK_TARGET_CPU" 305 if test "x$OPENJDK_TARGET_OS" = xlinux && test "x$OPENJDK_TARGET_CPU" = xx86; then 306 # On linux only, we replace x86 with i386. 307 OPENJDK_TARGET_CPU_OSARCH="i386" 308 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 309 # On all platforms except macosx, we replace x86_64 with amd64. 310 OPENJDK_TARGET_CPU_OSARCH="amd64" 311 fi 312 AC_SUBST(OPENJDK_TARGET_CPU_OSARCH) 313 314 OPENJDK_TARGET_CPU_JLI="$OPENJDK_TARGET_CPU" 315 if test "x$OPENJDK_TARGET_CPU" = xx86; then 316 OPENJDK_TARGET_CPU_JLI="i386" 317 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 318 # On all platforms except macosx, we replace x86_64 with amd64. 319 OPENJDK_TARGET_CPU_JLI="amd64" 320 fi 321 # Now setup the -D flags for building libjli. 322 OPENJDK_TARGET_CPU_JLI_CFLAGS="-DLIBARCHNAME='\"$OPENJDK_TARGET_CPU_JLI\"'" 323 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 324 if test "x$OPENJDK_TARGET_CPU_ARCH" = xsparc; then 325 OPENJDK_TARGET_CPU_JLI_CFLAGS="$OPENJDK_TARGET_CPU_JLI_CFLAGS -DLIBARCH32NAME='\"sparc\"' -DLIBARCH64NAME='\"sparcv9\"'" 326 elif test "x$OPENJDK_TARGET_CPU_ARCH" = xx86; then 327 OPENJDK_TARGET_CPU_JLI_CFLAGS="$OPENJDK_TARGET_CPU_JLI_CFLAGS -DLIBARCH32NAME='\"i386\"' -DLIBARCH64NAME='\"amd64\"'" 328 fi 329 fi 330 AC_SUBST(OPENJDK_TARGET_CPU_JLI_CFLAGS) 331 332 # Setup OPENJDK_TARGET_OS_API_DIR, used in source paths. 333 if test "x$OPENJDK_TARGET_OS_API" = xposix; then 334 OPENJDK_TARGET_OS_API_DIR="unix" 335 fi 336 if test "x$OPENJDK_TARGET_OS_API" = xwinapi; then 337 OPENJDK_TARGET_OS_API_DIR="windows" 338 fi 339 AC_SUBST(OPENJDK_TARGET_OS_API_DIR) 340 341 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 342 OPENJDK_TARGET_OS_EXPORT_DIR=macosx 343 else 344 OPENJDK_TARGET_OS_EXPORT_DIR=${OPENJDK_TARGET_OS_API_DIR} 345 fi 346 AC_SUBST(OPENJDK_TARGET_OS_EXPORT_DIR) 347 348 if test "x$OPENJDK_TARGET_CPU_BITS" = x64; then 349 A_LP64="LP64:=" 350 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 351 # unpack200.exe 352 if test "x$OPENJDK_TARGET_OS" = xlinux || test "x$OPENJDK_TARGET_OS" = xmacosx; then 353 ADD_LP64="-D_LP64=1" 354 fi 355 fi 356 AC_SUBST(LP64,$A_LP64) 357 358 if test "x$COMPILE_TYPE" = "xcross"; then 359 # FIXME: ... or should this include reduced builds..? 360 DEFINE_CROSS_COMPILE_ARCH="CROSS_COMPILE_ARCH:=$OPENJDK_TARGET_CPU_LEGACY" 361 else 362 DEFINE_CROSS_COMPILE_ARCH="" 363 fi 364 AC_SUBST(DEFINE_CROSS_COMPILE_ARCH) 365 366 # ZERO_ARCHDEF is used to enable architecture-specific code 367 case "${OPENJDK_TARGET_CPU}" in 368 ppc*) ZERO_ARCHDEF=PPC ;; 369 s390*) ZERO_ARCHDEF=S390 ;; 370 sparc*) ZERO_ARCHDEF=SPARC ;; 371 x86_64*) ZERO_ARCHDEF=AMD64 ;; 372 x86) ZERO_ARCHDEF=IA32 ;; 373 *) ZERO_ARCHDEF=$(echo "${OPENJDK_TARGET_CPU_LEGACY_LIB}" | tr a-z A-Z) 374 esac 375 AC_SUBST(ZERO_ARCHDEF) 376]) 377 378AC_DEFUN([PLATFORM_SET_RELEASE_FILE_OS_VALUES], 379[ 380 if test "x$OPENJDK_TARGET_OS" = "xsolaris"; then 381 REQUIRED_OS_NAME=SunOS 382 REQUIRED_OS_VERSION=5.10 383 fi 384 if test "x$OPENJDK_TARGET_OS" = "xlinux"; then 385 REQUIRED_OS_NAME=Linux 386 REQUIRED_OS_VERSION=2.6 387 fi 388 if test "x$OPENJDK_TARGET_OS" = "xwindows"; then 389 REQUIRED_OS_NAME=Windows 390 if test "x$OPENJDK_TARGET_CPU_BITS" = "x64"; then 391 REQUIRED_OS_VERSION=5.2 392 else 393 REQUIRED_OS_VERSION=5.1 394 fi 395 fi 396 if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then 397 REQUIRED_OS_NAME=Darwin 398 REQUIRED_OS_VERSION=11.2 399 fi 400 401 AC_SUBST(REQUIRED_OS_NAME) 402 AC_SUBST(REQUIRED_OS_VERSION) 403]) 404 405#%%% Build and target systems %%% 406AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_BUILD_AND_TARGET], 407[ 408 # Figure out the build and target systems. # Note that in autoconf terminology, "build" is obvious, but "target" 409 # is confusing; it assumes you are cross-compiling a cross-compiler (!) and "target" is thus the target of the 410 # product you're building. The target of this build is called "host". Since this is confusing to most people, we 411 # have not adopted that system, but use "target" as the platform we are building for. In some places though we need 412 # to use the configure naming style. 413 AC_CANONICAL_BUILD 414 AC_CANONICAL_HOST 415 AC_CANONICAL_TARGET 416 417 PLATFORM_EXTRACT_TARGET_AND_BUILD 418 PLATFORM_SETUP_TARGET_CPU_BITS 419 PLATFORM_SET_RELEASE_FILE_OS_VALUES 420 PLATFORM_SETUP_LEGACY_VARS 421]) 422 423AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_BUILD_OS_VERSION], 424[ 425 ############################################################################### 426 427 # Note that this is the build platform OS version! 428 429 OS_VERSION="`uname -r | ${SED} 's!\.! !g' | ${SED} 's!-! !g'`" 430 OS_VERSION_MAJOR="`${ECHO} ${OS_VERSION} | ${CUT} -f 1 -d ' '`" 431 OS_VERSION_MINOR="`${ECHO} ${OS_VERSION} | ${CUT} -f 2 -d ' '`" 432 OS_VERSION_MICRO="`${ECHO} ${OS_VERSION} | ${CUT} -f 3 -d ' '`" 433 AC_SUBST(OS_VERSION_MAJOR) 434 AC_SUBST(OS_VERSION_MINOR) 435 AC_SUBST(OS_VERSION_MICRO) 436]) 437 438# Support macro for PLATFORM_SETUP_OPENJDK_TARGET_BITS. 439# Add -mX to various FLAGS variables. 440AC_DEFUN([PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS], 441[ 442 # When we add flags to the "official" CFLAGS etc, we need to 443 # keep track of these additions in ADDED_CFLAGS etc. These 444 # will later be checked to make sure only controlled additions 445 # have been made to CFLAGS etc. 446 ADDED_CFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 447 ADDED_CXXFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 448 ADDED_LDFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 449 450 CFLAGS="${CFLAGS}${ADDED_CFLAGS}" 451 CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}" 452 LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}" 453 454 CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}" 455 CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}" 456 LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}" 457]) 458 459AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_BITS], 460[ 461 ############################################################################### 462 # 463 # Now we check if libjvm.so will use 32 or 64 bit pointers for the C/C++ code. 464 # (The JVM can use 32 or 64 bit Java pointers but that decision 465 # is made at runtime.) 466 # 467 468 if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xaix; then 469 # Always specify -m flag on Solaris 470 # And -q on AIX because otherwise the compiler produces 32-bit objects by default 471 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 472 elif test "x$COMPILE_TYPE" = xreduced; then 473 if test "x$OPENJDK_TARGET_OS" != xwindows; then 474 # Specify -m if running reduced on other Posix platforms 475 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 476 fi 477 fi 478 479 # Make compilation sanity check 480 AC_CHECK_HEADERS([stdio.h], , [ 481 AC_MSG_NOTICE([Failed to compile stdio.h. This likely implies missing compile dependencies.]) 482 if test "x$COMPILE_TYPE" = xreduced; then 483 AC_MSG_NOTICE([You are doing a reduced build. Check that you have 32-bit libraries installed.]) 484 elif test "x$COMPILE_TYPE" = xcross; then 485 AC_MSG_NOTICE([You are doing a cross-compilation. Check that you have all target platform libraries installed.]) 486 fi 487 AC_MSG_ERROR([Cannot continue.]) 488 ]) 489 490 AC_CHECK_SIZEOF([int *], [1111]) 491 492 # AC_CHECK_SIZEOF defines 'ac_cv_sizeof_int_p' to hold the number of bytes used by an 'int*' 493 if test "x$ac_cv_sizeof_int_p" = x; then 494 # The test failed, lets stick to the assumed value. 495 AC_MSG_WARN([The number of bits in the target could not be determined, using $OPENJDK_TARGET_CPU_BITS.]) 496 else 497 TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p` 498 499 if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then 500 # This situation may happen on 64-bit platforms where the compiler by default only generates 32-bit objects 501 # Let's try to implicitely set the compilers target architecture and retry the test 502 AC_MSG_NOTICE([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS).]) 503 AC_MSG_NOTICE([I'll retry after setting the platforms compiler target bits flag to ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}]) 504 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 505 506 # We have to unset 'ac_cv_sizeof_int_p' first, otherwise AC_CHECK_SIZEOF will use the previously cached value! 507 unset ac_cv_sizeof_int_p 508 # And we have to undef the definition of SIZEOF_INT_P in confdefs.h by the previous invocation of AC_CHECK_SIZEOF 509 cat >>confdefs.h <<_ACEOF 510#undef SIZEOF_INT_P 511_ACEOF 512 513 AC_CHECK_SIZEOF([int *], [1111]) 514 515 TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p` 516 517 if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then 518 AC_MSG_ERROR([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS)]) 519 fi 520 fi 521 fi 522 523 AC_MSG_CHECKING([for target address size]) 524 AC_MSG_RESULT([$OPENJDK_TARGET_CPU_BITS bits]) 525]) 526 527AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_ENDIANNESS], 528[ 529 ############################################################################### 530 # 531 # Is the target little of big endian? 532 # 533 AC_C_BIGENDIAN([ENDIAN="big"],[ENDIAN="little"],[ENDIAN="unknown"],[ENDIAN="universal_endianness"]) 534 535 if test "x$ENDIAN" = xuniversal_endianness; then 536 AC_MSG_ERROR([Building with both big and little endianness is not supported]) 537 fi 538 if test "x$ENDIAN" != "x$OPENJDK_TARGET_CPU_ENDIAN"; then 539 AC_MSG_ERROR([The tested endian in the target ($ENDIAN) differs from the endian expected to be found in the target ($OPENJDK_TARGET_CPU_ENDIAN)]) 540 fi 541]) 542