1 # 2 # Copyright (c) 2011, 2017, 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 # All valid JVM features, regardless of platform 27 VALID_JVM_FEATURES="compiler1 compiler2 zero minimal dtrace jvmti jvmci \ 28 graal vm-structs jni-check services management all-gcs nmt cds \ 29 static-build link-time-opt aot" 30 31 # All valid JVM variants 32 VALID_JVM_VARIANTS="server client minimal core zero custom" 33 34 ############################################################################### 35 # Check if the specified JVM variant should be built. To be used in shell if 36 # constructs, like this: 37 # if HOTSPOT_CHECK_JVM_VARIANT(server); then 38 # 39 # Only valid to use after HOTSPOT_SETUP_JVM_VARIANTS has setup variants. 40 41 # Definition kept in one line to allow inlining in if statements. 42 # Additional [] needed to keep m4 from mangling shell constructs. 43 AC_DEFUN([HOTSPOT_CHECK_JVM_VARIANT], 44 [ [ [[ " $JVM_VARIANTS " =~ " $1 " ]] ] ]) 45 46 ############################################################################### 47 # Check if the specified JVM features are explicitly enabled. To be used in 48 # shell if constructs, like this: 49 # if HOTSPOT_CHECK_JVM_FEATURE(jvmti); then 50 # 51 # Only valid to use after HOTSPOT_SETUP_JVM_FEATURES has setup features. 52 53 # Definition kept in one line to allow inlining in if statements. 54 # Additional [] needed to keep m4 from mangling shell constructs. 55 AC_DEFUN([HOTSPOT_CHECK_JVM_FEATURE], 56 [ [ [[ " $JVM_FEATURES " =~ " $1 " ]] ] ]) 57 58 ############################################################################### 59 # Check which variants of the JVM that we want to build. Available variants are: 60 # server: normal interpreter, and a tiered C1/C2 compiler 61 # client: normal interpreter, and C1 (no C2 compiler) 62 # minimal: reduced form of client with optional features stripped out 63 # core: normal interpreter only, no compiler 64 # zero: C++ based interpreter only, no compiler 65 # custom: baseline JVM with no default features 66 # 67 AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_VARIANTS], 68 [ 69 AC_ARG_WITH([jvm-variants], [AS_HELP_STRING([--with-jvm-variants], 70 [JVM variants (separated by commas) to build (server,client,minimal,core,zero,custom) @<:@server@:>@])]) 71 72 SETUP_HOTSPOT_TARGET_CPU_PORT 73 74 if test "x$with_jvm_variants" = x; then 75 with_jvm_variants="server" 76 fi 77 JVM_VARIANTS_OPT="$with_jvm_variants" 78 79 # Has the user listed more than one variant? 80 # Additional [] needed to keep m4 from mangling shell constructs. 81 if [ [[ "$JVM_VARIANTS_OPT" =~ "," ]] ]; then 82 BUILDING_MULTIPLE_JVM_VARIANTS=true 83 else 84 BUILDING_MULTIPLE_JVM_VARIANTS=false 85 fi 86 # Replace the commas with AND for use in the build directory name. 87 JVM_VARIANTS_WITH_AND=`$ECHO "$JVM_VARIANTS_OPT" | $SED -e 's/,/AND/g'` 88 89 AC_MSG_CHECKING([which variants of the JVM to build]) 90 # JVM_VARIANTS is a space-separated list. 91 # Also use minimal, not minimal1 (which is kept for backwards compatibility). 92 JVM_VARIANTS=`$ECHO $JVM_VARIANTS_OPT | $SED -e 's/,/ /g' -e 's/minimal1/minimal/'` 93 AC_MSG_RESULT([$JVM_VARIANTS]) 94 95 # Check that the selected variants are valid 96 97 # grep filter function inspired by a comment to http://stackoverflow.com/a/1617326 98 # Notice that the original variant failes on SLES 10 and 11 99 NEEDLE=${VALID_JVM_VARIANTS// /$'\n'} 100 STACK=${JVM_VARIANTS// /$'\n'} 101 INVALID_VARIANTS=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 102 if test "x$INVALID_VARIANTS" != x; then 103 AC_MSG_NOTICE([Unknown variant(s) specified: $INVALID_VARIANTS]) 104 AC_MSG_ERROR([The available JVM variants are: $VALID_JVM_VARIANTS]) 105 fi 106 107 # All "special" variants share the same output directory ("server") 108 VALID_MULTIPLE_JVM_VARIANTS="server client minimal" 109 NEEDLE=${VALID_MULTIPLE_JVM_VARIANTS// /$'\n'} 110 STACK=${JVM_VARIANTS// /$'\n'} 111 INVALID_MULTIPLE_VARIANTS=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 112 if test "x$INVALID_MULTIPLE_VARIANTS" != x && test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = xtrue; then 113 AC_MSG_ERROR([You cannot build multiple variants with anything else than $VALID_MULTIPLE_JVM_VARIANTS.]) 114 fi 115 116 # The "main" variant is the one used by other libs to link against during the 117 # build. 118 if test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = "xtrue"; then 119 MAIN_VARIANT_PRIO_ORDER="server client minimal" 120 for variant in $MAIN_VARIANT_PRIO_ORDER; do 121 if HOTSPOT_CHECK_JVM_VARIANT($variant); then 122 JVM_VARIANT_MAIN="$variant" 123 break 124 fi 125 done 126 else 127 JVM_VARIANT_MAIN="$JVM_VARIANTS" 128 fi 129 130 AC_SUBST(JVM_VARIANTS) 131 AC_SUBST(VALID_JVM_VARIANTS) 132 AC_SUBST(JVM_VARIANT_MAIN) 133 134 if HOTSPOT_CHECK_JVM_VARIANT(zero); then 135 # zero behaves as a platform and rewrites these values. This is really weird. :( 136 # We are guaranteed that we do not build any other variants when building zero. 137 HOTSPOT_TARGET_CPU=zero 138 HOTSPOT_TARGET_CPU_ARCH=zero 139 fi 140 ]) 141 142 ############################################################################### 143 # Check if dtrace should be enabled and has all prerequisites present. 144 # 145 AC_DEFUN_ONCE([HOTSPOT_SETUP_DTRACE], 146 [ 147 # Test for dtrace dependencies 148 AC_ARG_ENABLE([dtrace], [AS_HELP_STRING([--enable-dtrace@<:@=yes/no/auto@:>@], 149 [enable dtrace. Default is auto, where dtrace is enabled if all dependencies 150 are present.])]) 151 152 DTRACE_DEP_MISSING=false 153 154 AC_MSG_CHECKING([for dtrace tool]) 155 if test "x$DTRACE" != "x" && test -x "$DTRACE"; then 156 AC_MSG_RESULT([$DTRACE]) 157 else 158 AC_MSG_RESULT([not found, cannot build dtrace]) 159 DTRACE_DEP_MISSING=true 160 fi 161 162 AC_CHECK_HEADERS([sys/sdt.h], [DTRACE_HEADERS_OK=yes],[DTRACE_HEADERS_OK=no]) 163 if test "x$DTRACE_HEADERS_OK" != "xyes"; then 164 DTRACE_DEP_MISSING=true 165 fi 166 167 AC_MSG_CHECKING([if dtrace should be built]) 168 if test "x$enable_dtrace" = "xyes"; then 169 if test "x$DTRACE_DEP_MISSING" = "xtrue"; then 170 AC_MSG_RESULT([no, missing dependencies]) 171 HELP_MSG_MISSING_DEPENDENCY([dtrace]) 172 AC_MSG_ERROR([Cannot enable dtrace with missing dependencies. See above. $HELP_MSG]) 173 else 174 INCLUDE_DTRACE=true 175 AC_MSG_RESULT([yes, forced]) 176 fi 177 elif test "x$enable_dtrace" = "xno"; then 178 INCLUDE_DTRACE=false 179 AC_MSG_RESULT([no, forced]) 180 elif test "x$enable_dtrace" = "xauto" || test "x$enable_dtrace" = "x"; then 181 if test "x$DTRACE_DEP_MISSING" = "xtrue"; then 182 INCLUDE_DTRACE=false 183 AC_MSG_RESULT([no, missing dependencies]) 184 else 185 INCLUDE_DTRACE=true 186 AC_MSG_RESULT([yes, dependencies present]) 187 fi 188 else 189 AC_MSG_ERROR([Invalid value for --enable-dtrace: $enable_dtrace]) 190 fi 191 ]) 192 193 ################################################################################ 194 # Check if AOT should be enabled 195 # 196 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_AOT], 197 [ 198 AC_ARG_ENABLE([aot], [AS_HELP_STRING([--enable-aot@<:@=yes/no/auto@:>@], 199 [enable ahead of time compilation feature. Default is auto, where aot is enabled if all dependencies are present.])]) 200 201 if test "x$enable_aot" = "x" || test "x$enable_aot" = "xauto"; then 202 ENABLE_AOT="true" 203 elif test "x$enable_aot" = "xyes"; then 204 ENABLE_AOT="true" 205 elif test "x$enable_aot" = "xno"; then 206 ENABLE_AOT="false" 207 AC_MSG_CHECKING([if aot should be enabled]) 208 AC_MSG_RESULT([no, forced]) 209 else 210 AC_MSG_ERROR([Invalid value for --enable-aot: $enable_aot]) 211 fi 212 213 if test "x$ENABLE_AOT" = "xtrue"; then 214 # Only enable AOT on X64 platforms. 215 if test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then 216 if test -e "${TOPDIR}/src/jdk.aot"; then 217 if test -e "${TOPDIR}/src/jdk.internal.vm.compiler"; then 218 ENABLE_AOT="true" 219 else 220 ENABLE_AOT="false" 221 if test "x$enable_aot" = "xyes"; then 222 AC_MSG_ERROR([Cannot build AOT without src/jdk.internal.vm.compiler sources. Remove --enable-aot.]) 223 fi 224 fi 225 else 226 ENABLE_AOT="false" 227 if test "x$enable_aot" = "xyes"; then 228 AC_MSG_ERROR([Cannot build AOT without src/jdk.aot sources. Remove --enable-aot.]) 229 fi 230 fi 231 else 232 ENABLE_AOT="false" 233 if test "x$enable_aot" = "xyes"; then 234 AC_MSG_ERROR([AOT is currently only supported on x86_64. Remove --enable-aot.]) 235 fi 236 fi 237 fi 238 239 AC_SUBST(ENABLE_AOT) 240 ]) 241 242 ################################################################################ 243 # Allow to disable CDS 244 # 245 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_CDS], 246 [ 247 AC_ARG_ENABLE([cds], [AS_HELP_STRING([--enable-cds@<:@=yes/no@:>@], 248 [enable class data sharing feature in non-minimal VM. Default is yes.])]) 249 250 if test "x$enable_cds" = "x" || test "x$enable_cds" = "xyes"; then 251 ENABLE_CDS="true" 252 elif test "x$enable_cds" = "xno"; then 253 ENABLE_CDS="false" 254 else 255 AC_MSG_ERROR([Invalid value for --enable-cds: $enable_cds]) 256 fi 257 258 AC_SUBST(ENABLE_CDS) 259 ]) 260 261 ############################################################################### 262 # Set up all JVM features for each JVM variant. 263 # 264 AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES], 265 [ 266 # The user can in some cases supply additional jvm features. For the custom 267 # variant, this defines the entire variant. 268 AC_ARG_WITH([jvm-features], [AS_HELP_STRING([--with-jvm-features], 269 [additional JVM features to enable (separated by comma), use '--help' to show possible values @<:@none@:>@])]) 270 if test "x$with_jvm_features" != x; then 271 AC_MSG_CHECKING([additional JVM features]) 272 JVM_FEATURES=`$ECHO $with_jvm_features | $SED -e 's/,/ /g'` 273 AC_MSG_RESULT([$JVM_FEATURES]) 274 fi 275 276 # Override hotspot cpu definitions for ARM platforms 277 if test "x$OPENJDK_TARGET_CPU" = xarm; then 278 HOTSPOT_TARGET_CPU=arm_32 279 HOTSPOT_TARGET_CPU_DEFINE="ARM32" 280 JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char" 281 JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char" 282 elif test "x$OPENJDK_TARGET_CPU" = xaarch64 && test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 283 HOTSPOT_TARGET_CPU=arm_64 284 HOTSPOT_TARGET_CPU_ARCH=arm 285 JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char" 286 JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char" 287 fi 288 289 # Verify that dependencies are met for explicitly set features. 290 if HOTSPOT_CHECK_JVM_FEATURE(jvmti) && ! HOTSPOT_CHECK_JVM_FEATURE(services); then 291 AC_MSG_ERROR([Specified JVM feature 'jvmti' requires feature 'services']) 292 fi 293 294 if HOTSPOT_CHECK_JVM_FEATURE(management) && ! HOTSPOT_CHECK_JVM_FEATURE(nmt); then 295 AC_MSG_ERROR([Specified JVM feature 'management' requires feature 'nmt']) 296 fi 297 298 if HOTSPOT_CHECK_JVM_FEATURE(jvmci) && ! (HOTSPOT_CHECK_JVM_FEATURE(compiler1) || HOTSPOT_CHECK_JVM_FEATURE(compiler2)); then 299 AC_MSG_ERROR([Specified JVM feature 'jvmci' requires feature 'compiler2' or 'compiler1']) 300 fi 301 302 if HOTSPOT_CHECK_JVM_FEATURE(compiler2) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then 303 AC_MSG_ERROR([Specified JVM feature 'compiler2' requires feature 'all-gcs']) 304 fi 305 306 if HOTSPOT_CHECK_JVM_FEATURE(vm-structs) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then 307 AC_MSG_ERROR([Specified JVM feature 'vm-structs' requires feature 'all-gcs']) 308 fi 309 310 # Turn on additional features based on other parts of configure 311 if test "x$INCLUDE_DTRACE" = "xtrue"; then 312 JVM_FEATURES="$JVM_FEATURES dtrace" 313 else 314 if HOTSPOT_CHECK_JVM_FEATURE(dtrace); then 315 AC_MSG_ERROR([To enable dtrace, you must use --enable-dtrace]) 316 fi 317 fi 318 319 if test "x$STATIC_BUILD" = "xtrue"; then 320 JVM_FEATURES="$JVM_FEATURES static-build" 321 else 322 if HOTSPOT_CHECK_JVM_FEATURE(static-build); then 323 AC_MSG_ERROR([To enable static-build, you must use --enable-static-build]) 324 fi 325 fi 326 327 # Only enable jvmci on x86_64, sparcv9 and aarch64. 328 if test "x$OPENJDK_TARGET_CPU" = "xx86_64" || \ 329 test "x$OPENJDK_TARGET_CPU" = "xsparcv9" || \ 330 test "x$OPENJDK_TARGET_CPU" = "xaarch64" ; then 331 JVM_FEATURES_jvmci="jvmci" 332 else 333 JVM_FEATURES_jvmci="" 334 fi 335 336 AC_MSG_CHECKING([if jdk.internal.vm.compiler should be built]) 337 if HOTSPOT_CHECK_JVM_FEATURE(graal); then 338 AC_MSG_RESULT([yes, forced]) 339 if test "x$JVM_FEATURES_jvmci" != "xjvmci" ; then 340 AC_MSG_ERROR([Specified JVM feature 'graal' requires feature 'jvmci']) 341 fi 342 INCLUDE_GRAAL="true" 343 else 344 # By default enable graal build on linux-x64 or where AOT is available. 345 # graal build requires jvmci. 346 if test "x$JVM_FEATURES_jvmci" = "xjvmci" && \ 347 (test "x$OPENJDK_TARGET_CPU" = "xx86_64" && \ 348 test "x$OPENJDK_TARGET_OS" = "xlinux" || \ 349 test "x$ENABLE_AOT" = "xtrue") ; then 350 AC_MSG_RESULT([yes]) 351 JVM_FEATURES_graal="graal" 352 INCLUDE_GRAAL="true" 353 else 354 AC_MSG_RESULT([no]) 355 JVM_FEATURES_graal="" 356 INCLUDE_GRAAL="false" 357 fi 358 fi 359 360 AC_SUBST(INCLUDE_GRAAL) 361 362 AC_MSG_CHECKING([if aot should be enabled]) 363 if test "x$ENABLE_AOT" = "xtrue"; then 364 if test "x$enable_aot" = "xyes"; then 365 AC_MSG_RESULT([yes, forced]) 366 else 367 AC_MSG_RESULT([yes]) 368 fi 369 JVM_FEATURES_aot="aot" 370 else 371 if test "x$enable_aot" = "xno"; then 372 AC_MSG_RESULT([no, forced]) 373 else 374 AC_MSG_RESULT([no]) 375 fi 376 JVM_FEATURES_aot="" 377 fi 378 379 if test "x$OPENJDK_TARGET_CPU" = xarm ; then 380 # Default to use link time optimizations on minimal on arm 381 JVM_FEATURES_link_time_opt="link-time-opt" 382 else 383 JVM_FEATURES_link_time_opt="" 384 fi 385 386 # All variants but minimal (and custom) get these features 387 NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti vm-structs jni-check services management all-gcs nmt" 388 if test "x$ENABLE_CDS" = "xtrue"; then 389 NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cds" 390 fi 391 392 # Enable features depending on variant. 393 JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci $JVM_FEATURES_aot $JVM_FEATURES_graal" 394 JVM_FEATURES_client="compiler1 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci" 395 JVM_FEATURES_core="$NON_MINIMAL_FEATURES $JVM_FEATURES" 396 JVM_FEATURES_minimal="compiler1 minimal $JVM_FEATURES $JVM_FEATURES_link_time_opt" 397 JVM_FEATURES_zero="zero $NON_MINIMAL_FEATURES $JVM_FEATURES" 398 JVM_FEATURES_custom="$JVM_FEATURES" 399 400 AC_SUBST(JVM_FEATURES_server) 401 AC_SUBST(JVM_FEATURES_client) 402 AC_SUBST(JVM_FEATURES_core) 403 AC_SUBST(JVM_FEATURES_minimal) 404 AC_SUBST(JVM_FEATURES_zero) 405 AC_SUBST(JVM_FEATURES_custom) 406 407 # Used for verification of Makefiles by check-jvm-feature 408 AC_SUBST(VALID_JVM_FEATURES) 409 410 # We don't support --with-jvm-interpreter anymore, use zero instead. 411 BASIC_DEPRECATED_ARG_WITH(jvm-interpreter) 412 ]) 413 414 ############################################################################### 415 # Validate JVM features once all setup is complete, including custom setup. 416 # 417 AC_DEFUN_ONCE([HOTSPOT_VALIDATE_JVM_FEATURES], 418 [ 419 # Keep feature lists sorted and free of duplicates 420 JVM_FEATURES_server="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_server | $SORT -u))" 421 JVM_FEATURES_client="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_client | $SORT -u))" 422 JVM_FEATURES_core="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_core | $SORT -u))" 423 JVM_FEATURES_minimal="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_minimal | $SORT -u))" 424 JVM_FEATURES_zero="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zero | $SORT -u))" 425 JVM_FEATURES_custom="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_custom | $SORT -u))" 426 427 # Validate features 428 for variant in $JVM_VARIANTS; do 429 AC_MSG_CHECKING([JVM features for JVM variant '$variant']) 430 features_var_name=JVM_FEATURES_$variant 431 JVM_FEATURES_TO_TEST=${!features_var_name} 432 AC_MSG_RESULT([$JVM_FEATURES_TO_TEST]) 433 NEEDLE=${VALID_JVM_FEATURES// /$'\n'} 434 STACK=${JVM_FEATURES_TO_TEST// /$'\n'} 435 INVALID_FEATURES=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 436 if test "x$INVALID_FEATURES" != x; then 437 AC_MSG_ERROR([Invalid JVM feature(s): $INVALID_FEATURES]) 438 fi 439 done 440 ]) 441 442 ################################################################################ 443 # 444 # Specify which sources will be used to build the 64-bit ARM port 445 # 446 # --with-cpu-port=arm64 will use hotspot/src/cpu/arm 447 # --with-cpu-port=aarch64 will use hotspot/src/cpu/aarch64 448 # 449 AC_DEFUN([SETUP_HOTSPOT_TARGET_CPU_PORT], 450 [ 451 AC_ARG_WITH(cpu-port, [AS_HELP_STRING([--with-cpu-port], 452 [specify sources to use for Hotspot 64-bit ARM port (arm64,aarch64) @<:@aarch64@:>@ ])]) 453 454 if test "x$with_cpu_port" != x; then 455 if test "x$OPENJDK_TARGET_CPU" != xaarch64; then 456 AC_MSG_ERROR([--with-cpu-port only available on aarch64]) 457 fi 458 if test "x$with_cpu_port" != xarm64 && \ 459 test "x$with_cpu_port" != xaarch64; then 460 AC_MSG_ERROR([--with-cpu-port must specify arm64 or aarch64]) 461 fi 462 HOTSPOT_TARGET_CPU_PORT="$with_cpu_port" 463 fi 464 ]) 465 466 467 ################################################################################ 468 # Check if gtest should be built 469 # 470 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_GTEST], 471 [ 472 AC_ARG_ENABLE([hotspot-gtest], [AS_HELP_STRING([--disable-hotspot-gtest], 473 [Disables building of the Hotspot unit tests])]) 474 475 if test -e "${TOPDIR}/test/hotspot/gtest"; then 476 GTEST_DIR_EXISTS="true" 477 else 478 GTEST_DIR_EXISTS="false" 479 fi 480 481 AC_MSG_CHECKING([if Hotspot gtest unit tests should be built]) 482 if test "x$enable_hotspot_gtest" = "xyes"; then 483 if test "x$GTEST_DIR_EXISTS" = "xtrue"; then 484 AC_MSG_RESULT([yes, forced]) 485 BUILD_GTEST="true" 486 else 487 AC_MSG_ERROR([Cannot build gtest without the test source]) 488 fi 489 elif test "x$enable_hotspot_gtest" = "xno"; then 490 AC_MSG_RESULT([no, forced]) 491 BUILD_GTEST="false" 492 elif test "x$enable_hotspot_gtest" = "x"; then 493 if test "x$GTEST_DIR_EXISTS" = "xtrue"; then 494 AC_MSG_RESULT([yes]) 495 BUILD_GTEST="true" 496 else 497 AC_MSG_RESULT([no]) 498 BUILD_GTEST="false" 499 fi 500 else 501 AC_MSG_ERROR([--enable-gtest must be either yes or no]) 502 fi 503 504 AC_SUBST(BUILD_GTEST) 505 ])