platform.m4 revision 945:584dc2e95e04
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 sparc) 64 VAR_CPU=sparc 65 VAR_CPU_ARCH=sparc 66 VAR_CPU_BITS=32 67 VAR_CPU_ENDIAN=big 68 ;; 69 sparcv9) 70 VAR_CPU=sparcv9 71 VAR_CPU_ARCH=sparc 72 VAR_CPU_BITS=64 73 VAR_CPU_ENDIAN=big 74 ;; 75 *) 76 AC_MSG_ERROR([unsupported cpu $1]) 77 ;; 78 esac 79]) 80 81# Support macro for PLATFORM_EXTRACT_TARGET_AND_BUILD. 82# Converts autoconf style OS name to OpenJDK style, into 83# VAR_OS and VAR_OS_API. 84AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_OS], 85[ 86 case "$1" in 87 *linux*) 88 VAR_OS=linux 89 VAR_OS_API=posix 90 VAR_OS_ENV=linux 91 ;; 92 *solaris*) 93 VAR_OS=solaris 94 VAR_OS_API=posix 95 VAR_OS_ENV=solaris 96 ;; 97 *darwin*) 98 VAR_OS=macosx 99 VAR_OS_API=posix 100 VAR_OS_ENV=macosx 101 ;; 102 *bsd*) 103 VAR_OS=bsd 104 VAR_OS_API=posix 105 VAR_OS_ENV=bsd 106 ;; 107 *cygwin*) 108 VAR_OS=windows 109 VAR_OS_API=winapi 110 VAR_OS_ENV=windows.cygwin 111 ;; 112 *mingw*) 113 VAR_OS=windows 114 VAR_OS_API=winapi 115 VAR_OS_ENV=windows.msys 116 ;; 117 *aix*) 118 VAR_OS=aix 119 VAR_OS_API=posix 120 VAR_OS_ENV=aix 121 ;; 122 *) 123 AC_MSG_ERROR([unsupported operating system $1]) 124 ;; 125 esac 126]) 127 128# Expects $host_os $host_cpu $build_os and $build_cpu 129# and $with_target_bits to have been setup! 130# 131# Translate the standard triplet(quadruplet) definition 132# of the target/build system into OPENJDK_TARGET_OS, OPENJDK_TARGET_CPU, 133# OPENJDK_BUILD_OS, etc. 134AC_DEFUN([PLATFORM_EXTRACT_TARGET_AND_BUILD], 135[ 136 # Copy the autoconf trip/quadruplet verbatim to OPENJDK_TARGET_AUTOCONF_NAME 137 # (from the autoconf "host") and OPENJDK_BUILD_AUTOCONF_NAME 138 # Note that we might later on rewrite e.g. OPENJDK_TARGET_CPU due to reduced build, 139 # but this will not change the value of OPENJDK_TARGET_AUTOCONF_NAME. 140 OPENJDK_TARGET_AUTOCONF_NAME="$host" 141 OPENJDK_BUILD_AUTOCONF_NAME="$build" 142 AC_SUBST(OPENJDK_TARGET_AUTOCONF_NAME) 143 AC_SUBST(OPENJDK_BUILD_AUTOCONF_NAME) 144 145 # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables. 146 PLATFORM_EXTRACT_VARS_FROM_OS($build_os) 147 PLATFORM_EXTRACT_VARS_FROM_CPU($build_cpu) 148 # ..and setup our own variables. (Do this explicitely to facilitate searching) 149 OPENJDK_BUILD_OS="$VAR_OS" 150 OPENJDK_BUILD_OS_API="$VAR_OS_API" 151 OPENJDK_BUILD_OS_ENV="$VAR_OS_ENV" 152 OPENJDK_BUILD_CPU="$VAR_CPU" 153 OPENJDK_BUILD_CPU_ARCH="$VAR_CPU_ARCH" 154 OPENJDK_BUILD_CPU_BITS="$VAR_CPU_BITS" 155 OPENJDK_BUILD_CPU_ENDIAN="$VAR_CPU_ENDIAN" 156 AC_SUBST(OPENJDK_BUILD_OS) 157 AC_SUBST(OPENJDK_BUILD_OS_API) 158 AC_SUBST(OPENJDK_BUILD_CPU) 159 AC_SUBST(OPENJDK_BUILD_CPU_ARCH) 160 AC_SUBST(OPENJDK_BUILD_CPU_BITS) 161 AC_SUBST(OPENJDK_BUILD_CPU_ENDIAN) 162 163 AC_MSG_CHECKING([openjdk-build os-cpu]) 164 AC_MSG_RESULT([$OPENJDK_BUILD_OS-$OPENJDK_BUILD_CPU]) 165 166 # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables. 167 PLATFORM_EXTRACT_VARS_FROM_OS($host_os) 168 PLATFORM_EXTRACT_VARS_FROM_CPU($host_cpu) 169 # ... and setup our own variables. (Do this explicitely to facilitate searching) 170 OPENJDK_TARGET_OS="$VAR_OS" 171 OPENJDK_TARGET_OS_API="$VAR_OS_API" 172 OPENJDK_TARGET_OS_ENV="$VAR_OS_ENV" 173 OPENJDK_TARGET_CPU="$VAR_CPU" 174 OPENJDK_TARGET_CPU_ARCH="$VAR_CPU_ARCH" 175 OPENJDK_TARGET_CPU_BITS="$VAR_CPU_BITS" 176 OPENJDK_TARGET_CPU_ENDIAN="$VAR_CPU_ENDIAN" 177 AC_SUBST(OPENJDK_TARGET_OS) 178 AC_SUBST(OPENJDK_TARGET_OS_API) 179 AC_SUBST(OPENJDK_TARGET_CPU) 180 AC_SUBST(OPENJDK_TARGET_CPU_ARCH) 181 AC_SUBST(OPENJDK_TARGET_CPU_BITS) 182 AC_SUBST(OPENJDK_TARGET_CPU_ENDIAN) 183 184 AC_MSG_CHECKING([openjdk-target os-cpu]) 185 AC_MSG_RESULT([$OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU]) 186]) 187 188# Check if a reduced build (32-bit on 64-bit platforms) is requested, and modify behaviour 189# accordingly. Must be done after setting up build and target system, but before 190# doing anything else with these values. 191AC_DEFUN([PLATFORM_SETUP_TARGET_CPU_BITS], 192[ 193 AC_ARG_WITH(target-bits, [AS_HELP_STRING([--with-target-bits], 194 [build 32-bit or 64-bit binaries (for platforms that support it), e.g. --with-target-bits=32 @<:@guessed@:>@])]) 195 196 # We have three types of compiles: 197 # native == normal compilation, target system == build system 198 # cross == traditional cross compilation, target system != build system; special toolchain needed 199 # reduced == using native compilers, but with special flags (e.g. -m32) to produce 32-bit builds on 64-bit machines 200 # 201 if test "x$OPENJDK_BUILD_AUTOCONF_NAME" != "x$OPENJDK_TARGET_AUTOCONF_NAME"; then 202 # We're doing a proper cross-compilation 203 COMPILE_TYPE="cross" 204 else 205 COMPILE_TYPE="native" 206 fi 207 208 if test "x$with_target_bits" != x; then 209 if test "x$COMPILE_TYPE" = "xcross"; then 210 AC_MSG_ERROR([It is not possible to combine --with-target-bits=X and proper cross-compilation. Choose either.]) 211 fi 212 213 if test "x$with_target_bits" = x32 && test "x$OPENJDK_TARGET_CPU_BITS" = x64; then 214 # A reduced build is requested 215 COMPILE_TYPE="reduced" 216 OPENJDK_TARGET_CPU_BITS=32 217 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then 218 OPENJDK_TARGET_CPU=x86 219 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then 220 OPENJDK_TARGET_CPU=sparc 221 else 222 AC_MSG_ERROR([Reduced build (--with-target-bits=32) is only supported on x86_64 and sparcv9]) 223 fi 224 elif test "x$with_target_bits" = x64 && test "x$OPENJDK_TARGET_CPU_BITS" = x32; then 225 AC_MSG_ERROR([It is not possible to use --with-target-bits=64 on a 32 bit system. Use proper cross-compilation instead.]) 226 elif test "x$with_target_bits" = "x$OPENJDK_TARGET_CPU_BITS"; then 227 AC_MSG_NOTICE([--with-target-bits are set to build platform address size; argument has no meaning]) 228 else 229 AC_MSG_ERROR([--with-target-bits can only be 32 or 64, you specified $with_target_bits!]) 230 fi 231 fi 232 AC_SUBST(COMPILE_TYPE) 233 234AC_MSG_CHECKING([compilation type]) 235AC_MSG_RESULT([$COMPILE_TYPE]) 236]) 237 238 # Setup the legacy variables, for controlling the old makefiles. 239 # 240AC_DEFUN([PLATFORM_SETUP_LEGACY_VARS], 241[ 242 # Also store the legacy naming of the cpu. 243 # Ie i586 and amd64 instead of x86 and x86_64 244 OPENJDK_TARGET_CPU_LEGACY="$OPENJDK_TARGET_CPU" 245 if test "x$OPENJDK_TARGET_CPU" = xx86; then 246 OPENJDK_TARGET_CPU_LEGACY="i586" 247 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 248 # On all platforms except MacOSX replace x86_64 with amd64. 249 OPENJDK_TARGET_CPU_LEGACY="amd64" 250 fi 251 AC_SUBST(OPENJDK_TARGET_CPU_LEGACY) 252 253 # And the second legacy naming of the cpu. 254 # Ie i386 and amd64 instead of x86 and x86_64. 255 OPENJDK_TARGET_CPU_LEGACY_LIB="$OPENJDK_TARGET_CPU" 256 if test "x$OPENJDK_TARGET_CPU" = xx86; then 257 OPENJDK_TARGET_CPU_LEGACY_LIB="i386" 258 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 259 OPENJDK_TARGET_CPU_LEGACY_LIB="amd64" 260 fi 261 AC_SUBST(OPENJDK_TARGET_CPU_LEGACY_LIB) 262 263 # This is the name of the cpu (but using i386 and amd64 instead of 264 # x86 and x86_64, respectively), preceeded by a /, to be used when 265 # locating libraries. On macosx, it's empty, though. 266 OPENJDK_TARGET_CPU_LIBDIR="/$OPENJDK_TARGET_CPU_LEGACY_LIB" 267 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 268 OPENJDK_TARGET_CPU_LIBDIR="" 269 fi 270 AC_SUBST(OPENJDK_TARGET_CPU_LIBDIR) 271 272 # OPENJDK_TARGET_CPU_ISADIR is normally empty. On 64-bit Solaris systems, it is set to 273 # /amd64 or /sparcv9. This string is appended to some library paths, like this: 274 # /usr/lib${OPENJDK_TARGET_CPU_ISADIR}/libexample.so 275 OPENJDK_TARGET_CPU_ISADIR="" 276 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 277 if test "x$OPENJDK_TARGET_CPU" = xx86_64; then 278 OPENJDK_TARGET_CPU_ISADIR="/amd64" 279 elif test "x$OPENJDK_TARGET_CPU" = xsparcv9; then 280 OPENJDK_TARGET_CPU_ISADIR="/sparcv9" 281 fi 282 fi 283 AC_SUBST(OPENJDK_TARGET_CPU_ISADIR) 284 285 # Setup OPENJDK_TARGET_CPU_OSARCH, which is used to set the os.arch Java system property 286 OPENJDK_TARGET_CPU_OSARCH="$OPENJDK_TARGET_CPU" 287 if test "x$OPENJDK_TARGET_OS" = xlinux && test "x$OPENJDK_TARGET_CPU" = xx86; then 288 # On linux only, we replace x86 with i386. 289 OPENJDK_TARGET_CPU_OSARCH="i386" 290 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 291 # On all platforms except macosx, we replace x86_64 with amd64. 292 OPENJDK_TARGET_CPU_OSARCH="amd64" 293 fi 294 AC_SUBST(OPENJDK_TARGET_CPU_OSARCH) 295 296 OPENJDK_TARGET_CPU_JLI="$OPENJDK_TARGET_CPU" 297 if test "x$OPENJDK_TARGET_CPU" = xx86; then 298 OPENJDK_TARGET_CPU_JLI="i386" 299 elif test "x$OPENJDK_TARGET_OS" != xmacosx && test "x$OPENJDK_TARGET_CPU" = xx86_64; then 300 # On all platforms except macosx, we replace x86_64 with amd64. 301 OPENJDK_TARGET_CPU_JLI="amd64" 302 fi 303 # Now setup the -D flags for building libjli. 304 OPENJDK_TARGET_CPU_JLI_CFLAGS="-DLIBARCHNAME='\"$OPENJDK_TARGET_CPU_JLI\"'" 305 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 306 if test "x$OPENJDK_TARGET_CPU_ARCH" = xsparc; then 307 OPENJDK_TARGET_CPU_JLI_CFLAGS="$OPENJDK_TARGET_CPU_JLI_CFLAGS -DLIBARCH32NAME='\"sparc\"' -DLIBARCH64NAME='\"sparcv9\"'" 308 elif test "x$OPENJDK_TARGET_CPU_ARCH" = xx86; then 309 OPENJDK_TARGET_CPU_JLI_CFLAGS="$OPENJDK_TARGET_CPU_JLI_CFLAGS -DLIBARCH32NAME='\"i386\"' -DLIBARCH64NAME='\"amd64\"'" 310 fi 311 fi 312 AC_SUBST(OPENJDK_TARGET_CPU_JLI_CFLAGS) 313 314 # Setup OPENJDK_TARGET_OS_API_DIR, used in source paths. 315 if test "x$OPENJDK_TARGET_OS_API" = xposix; then 316 OPENJDK_TARGET_OS_API_DIR="solaris" 317 fi 318 if test "x$OPENJDK_TARGET_OS_API" = xwinapi; then 319 OPENJDK_TARGET_OS_API_DIR="windows" 320 fi 321 AC_SUBST(OPENJDK_TARGET_OS_API_DIR) 322 323 if test "x$OPENJDK_TARGET_CPU_BITS" = x64; then 324 A_LP64="LP64:=" 325 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 326 # unpack200.exe 327 if test "x$OPENJDK_TARGET_OS" = xlinux || test "x$OPENJDK_TARGET_OS" = xmacosx; then 328 ADD_LP64="-D_LP64=1" 329 fi 330 fi 331 AC_SUBST(LP64,$A_LP64) 332 333 if test "x$COMPILE_TYPE" = "xcross"; then 334 # FIXME: ... or should this include reduced builds..? 335 DEFINE_CROSS_COMPILE_ARCH="CROSS_COMPILE_ARCH:=$OPENJDK_TARGET_CPU_LEGACY" 336 else 337 DEFINE_CROSS_COMPILE_ARCH="" 338 fi 339 AC_SUBST(DEFINE_CROSS_COMPILE_ARCH) 340 341 # ZERO_ARCHDEF is used to enable architecture-specific code 342 case "${OPENJDK_TARGET_CPU}" in 343 ppc*) ZERO_ARCHDEF=PPC ;; 344 s390*) ZERO_ARCHDEF=S390 ;; 345 sparc*) ZERO_ARCHDEF=SPARC ;; 346 x86_64*) ZERO_ARCHDEF=AMD64 ;; 347 x86) ZERO_ARCHDEF=IA32 ;; 348 *) ZERO_ARCHDEF=$(echo "${OPENJDK_TARGET_CPU_LEGACY_LIB}" | tr a-z A-Z) 349 esac 350 AC_SUBST(ZERO_ARCHDEF) 351 352]) 353 354AC_DEFUN([PLATFORM_SET_RELEASE_FILE_OS_VALUES], 355[ 356 if test "x$OPENJDK_TARGET_OS" = "xsolaris"; then 357 REQUIRED_OS_NAME=SunOS 358 REQUIRED_OS_VERSION=5.10 359 fi 360 if test "x$OPENJDK_TARGET_OS" = "xlinux"; then 361 REQUIRED_OS_NAME=Linux 362 REQUIRED_OS_VERSION=2.6 363 fi 364 if test "x$OPENJDK_TARGET_OS" = "xwindows"; then 365 REQUIRED_OS_NAME=Windows 366 if test "x$OPENJDK_TARGET_CPU_BITS" = "x64"; then 367 REQUIRED_OS_VERSION=5.2 368 else 369 REQUIRED_OS_VERSION=5.1 370 fi 371 fi 372 if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then 373 REQUIRED_OS_NAME=Darwin 374 REQUIRED_OS_VERSION=11.2 375 fi 376 377 AC_SUBST(REQUIRED_OS_NAME) 378 AC_SUBST(REQUIRED_OS_VERSION) 379]) 380 381#%%% Build and target systems %%% 382AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_BUILD_AND_TARGET], 383[ 384# Figure out the build and target systems. # Note that in autoconf terminology, "build" is obvious, but "target" 385# is confusing; it assumes you are cross-compiling a cross-compiler (!) and "target" is thus the target of the 386# product you're building. The target of this build is called "host". Since this is confusing to most people, we 387# have not adopted that system, but use "target" as the platform we are building for. In some places though we need 388# to use the configure naming style. 389AC_CANONICAL_BUILD 390AC_CANONICAL_HOST 391AC_CANONICAL_TARGET 392 393PLATFORM_EXTRACT_TARGET_AND_BUILD 394PLATFORM_SETUP_TARGET_CPU_BITS 395PLATFORM_SET_RELEASE_FILE_OS_VALUES 396PLATFORM_SETUP_LEGACY_VARS 397]) 398 399AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_BUILD_OS_VERSION], 400[ 401############################################################################### 402 403# Note that this is the build platform OS version! 404 405OS_VERSION="`uname -r | ${SED} 's!\.! !g' | ${SED} 's!-! !g'`" 406OS_VERSION_MAJOR="`${ECHO} ${OS_VERSION} | ${CUT} -f 1 -d ' '`" 407OS_VERSION_MINOR="`${ECHO} ${OS_VERSION} | ${CUT} -f 2 -d ' '`" 408OS_VERSION_MICRO="`${ECHO} ${OS_VERSION} | ${CUT} -f 3 -d ' '`" 409AC_SUBST(OS_VERSION_MAJOR) 410AC_SUBST(OS_VERSION_MINOR) 411AC_SUBST(OS_VERSION_MICRO) 412]) 413 414# Support macro for PLATFORM_SETUP_OPENJDK_TARGET_BITS. 415# Add -mX to various FLAGS variables. 416AC_DEFUN([PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS], 417[ 418 # keep track of c/cxx flags that we added outselves... 419 # to prevent emitting warning... 420 ADDED_CFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 421 ADDED_CXXFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 422 ADDED_LDFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}" 423 424 CFLAGS="${CFLAGS}${ADDED_CFLAGS}" 425 CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}" 426 LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}" 427 428 CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}" 429 CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}" 430 LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}" 431]) 432 433AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_BITS], 434[ 435############################################################################### 436# 437# Now we check if libjvm.so will use 32 or 64 bit pointers for the C/C++ code. 438# (The JVM can use 32 or 64 bit Java pointers but that decision 439# is made at runtime.) 440# 441 442if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xaix; then 443 # Always specify -m flag on Solaris 444 # And -q on AIX because otherwise the compiler produces 32-bit objects by default 445 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 446elif test "x$COMPILE_TYPE" = xreduced; then 447 if test "x$OPENJDK_TARGET_OS" != xwindows; then 448 # Specify -m if running reduced on other Posix platforms 449 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 450 fi 451fi 452 453# Make compilation sanity check 454AC_CHECK_HEADERS([stdio.h], , [ 455 AC_MSG_NOTICE([Failed to compile stdio.h. This likely implies missing compile dependencies.]) 456 if test "x$COMPILE_TYPE" = xreduced; then 457 AC_MSG_NOTICE([You are doing a reduced build. Check that you have 32-bit libraries installed.]) 458 elif test "x$COMPILE_TYPE" = xcross; then 459 AC_MSG_NOTICE([You are doing a cross-compilation. Check that you have all target platform libraries installed.]) 460 fi 461 AC_MSG_ERROR([Cannot continue.]) 462]) 463 464AC_CHECK_SIZEOF([int *], [1111]) 465 466# AC_CHECK_SIZEOF defines 'ac_cv_sizeof_int_p' to hold the number of bytes used by an 'int*' 467if test "x$ac_cv_sizeof_int_p" = x; then 468 # The test failed, lets stick to the assumed value. 469 AC_MSG_WARN([The number of bits in the target could not be determined, using $OPENJDK_TARGET_CPU_BITS.]) 470else 471 TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p` 472 473 if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then 474 # This situation may happen on 64-bit platforms where the compiler by default only generates 32-bit objects 475 # Let's try to implicitely set the compilers target architecture and retry the test 476 AC_MSG_NOTICE([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS).]) 477 AC_MSG_NOTICE([I'll retry after setting the platforms compiler target bits flag to ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}]) 478 PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS 479 480 # We have to unset 'ac_cv_sizeof_int_p' first, otherwise AC_CHECK_SIZEOF will use the previously cached value! 481 unset ac_cv_sizeof_int_p 482 # And we have to undef the definition of SIZEOF_INT_P in confdefs.h by the previous invocation of AC_CHECK_SIZEOF 483 cat >>confdefs.h <<_ACEOF 484#undef SIZEOF_INT_P 485_ACEOF 486 487 AC_CHECK_SIZEOF([int *], [1111]) 488 489 TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p` 490 491 if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then 492 AC_MSG_ERROR([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS)]) 493 fi 494 fi 495fi 496 497AC_MSG_CHECKING([for target address size]) 498AC_MSG_RESULT([$OPENJDK_TARGET_CPU_BITS bits]) 499]) 500 501AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_ENDIANNESS], 502[ 503############################################################################### 504# 505# Is the target little of big endian? 506# 507AC_C_BIGENDIAN([ENDIAN="big"],[ENDIAN="little"],[ENDIAN="unknown"],[ENDIAN="universal_endianness"]) 508 509if test "x$ENDIAN" = xuniversal_endianness; then 510 AC_MSG_ERROR([Building with both big and little endianness is not supported]) 511fi 512if test "x$ENDIAN" != "x$OPENJDK_TARGET_CPU_ENDIAN"; then 513 AC_MSG_ERROR([The tested endian in the target ($ENDIAN) differs from the endian expected to be found in the target ($OPENJDK_TARGET_CPU_ENDIAN)]) 514fi 515]) 516