hotspot.m4 revision 2713:21142069b8ea
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 27VALID_JVM_FEATURES="compiler1 compiler2 zero shark minimal dtrace jvmti jvmci \ 28 graal fprof vm-structs jni-check services management all-gcs nmt cds \ 29 static-build link-time-opt aot" 30 31# All valid JVM variants 32VALID_JVM_VARIANTS="server client minimal core zero zeroshark 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. 43AC_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. 55AC_DEFUN([HOTSPOT_CHECK_JVM_FEATURE], 56[ [ [[ " $JVM_FEATURES " =~ " $1 " ]] ] ]) 57 58############################################################################### 59# Check which variants of the JVM that we want to build. Available variants are: 60# server: normal interpreter, and a tiered C1/C2 compiler 61# client: normal interpreter, and C1 (no C2 compiler) 62# minimal: reduced form of client with optional features stripped out 63# core: normal interpreter only, no compiler 64# zero: C++ based interpreter only, no compiler 65# zeroshark: C++ based interpreter, and a llvm-based compiler 66# custom: baseline JVM with no default features 67# 68AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_VARIANTS], 69[ 70 AC_ARG_WITH([jvm-variants], [AS_HELP_STRING([--with-jvm-variants], 71 [JVM variants (separated by commas) to build (server,client,minimal,core,zero,zeroshark,custom) @<:@server@:>@])]) 72 73 SETUP_HOTSPOT_TARGET_CPU_PORT 74 75 if test "x$with_jvm_variants" = x; then 76 with_jvm_variants="server" 77 fi 78 JVM_VARIANTS_OPT="$with_jvm_variants" 79 80 # Has the user listed more than one variant? 81 # Additional [] needed to keep m4 from mangling shell constructs. 82 if [ [[ "$JVM_VARIANTS_OPT" =~ "," ]] ]; then 83 BUILDING_MULTIPLE_JVM_VARIANTS=true 84 else 85 BUILDING_MULTIPLE_JVM_VARIANTS=false 86 fi 87 # Replace the commas with AND for use in the build directory name. 88 JVM_VARIANTS_WITH_AND=`$ECHO "$JVM_VARIANTS_OPT" | $SED -e 's/,/AND/g'` 89 90 AC_MSG_CHECKING([which variants of the JVM to build]) 91 # JVM_VARIANTS is a space-separated list. 92 # Also use minimal, not minimal1 (which is kept for backwards compatibility). 93 JVM_VARIANTS=`$ECHO $JVM_VARIANTS_OPT | $SED -e 's/,/ /g' -e 's/minimal1/minimal/'` 94 AC_MSG_RESULT([$JVM_VARIANTS]) 95 96 # Check that the selected variants are valid 97 98 # grep filter function inspired by a comment to http://stackoverflow.com/a/1617326 99 # Notice that the original variant failes on SLES 10 and 11 100 NEEDLE=${VALID_JVM_VARIANTS// /$'\n'} 101 STACK=${JVM_VARIANTS// /$'\n'} 102 INVALID_VARIANTS=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 103 if test "x$INVALID_VARIANTS" != x; then 104 AC_MSG_NOTICE([Unknown variant(s) specified: $INVALID_VARIANTS]) 105 AC_MSG_ERROR([The available JVM variants are: $VALID_JVM_VARIANTS]) 106 fi 107 108 # All "special" variants share the same output directory ("server") 109 VALID_MULTIPLE_JVM_VARIANTS="server client minimal" 110 NEEDLE=${VALID_MULTIPLE_JVM_VARIANTS// /$'\n'} 111 STACK=${JVM_VARIANTS// /$'\n'} 112 INVALID_MULTIPLE_VARIANTS=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 113 if test "x$INVALID_MULTIPLE_VARIANTS" != x && test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = xtrue; then 114 AC_MSG_ERROR([You cannot build multiple variants with anything else than $VALID_MULTIPLE_JVM_VARIANTS.]) 115 fi 116 117 # The "main" variant is the one used by other libs to link against during the 118 # build. 119 if test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = "xtrue"; then 120 MAIN_VARIANT_PRIO_ORDER="server client minimal" 121 for variant in $MAIN_VARIANT_PRIO_ORDER; do 122 if HOTSPOT_CHECK_JVM_VARIANT($variant); then 123 JVM_VARIANT_MAIN="$variant" 124 break 125 fi 126 done 127 else 128 JVM_VARIANT_MAIN="$JVM_VARIANTS" 129 fi 130 131 AC_SUBST(JVM_VARIANTS) 132 AC_SUBST(VALID_JVM_VARIANTS) 133 AC_SUBST(JVM_VARIANT_MAIN) 134 135 if HOTSPOT_CHECK_JVM_VARIANT(zero) || HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then 136 # zero behaves as a platform and rewrites these values. This is really weird. :( 137 # We are guaranteed that we do not build any other variants when building zero. 138 HOTSPOT_TARGET_CPU=zero 139 HOTSPOT_TARGET_CPU_ARCH=zero 140 fi 141]) 142 143############################################################################### 144# Check if dtrace should be enabled and has all prerequisites present. 145# 146AC_DEFUN_ONCE([HOTSPOT_SETUP_DTRACE], 147[ 148 # Test for dtrace dependencies 149 AC_ARG_ENABLE([dtrace], [AS_HELP_STRING([--enable-dtrace@<:@=yes/no/auto@:>@], 150 [enable dtrace. Default is auto, where dtrace is enabled if all dependencies 151 are present.])]) 152 153 DTRACE_DEP_MISSING=false 154 155 AC_MSG_CHECKING([for dtrace tool]) 156 if test "x$DTRACE" != "x" && test -x "$DTRACE"; then 157 AC_MSG_RESULT([$DTRACE]) 158 else 159 AC_MSG_RESULT([not found, cannot build dtrace]) 160 DTRACE_DEP_MISSING=true 161 fi 162 163 AC_CHECK_HEADERS([sys/sdt.h], [DTRACE_HEADERS_OK=yes],[DTRACE_HEADERS_OK=no]) 164 if test "x$DTRACE_HEADERS_OK" != "xyes"; then 165 DTRACE_DEP_MISSING=true 166 fi 167 168 AC_MSG_CHECKING([if dtrace should be built]) 169 if test "x$enable_dtrace" = "xyes"; then 170 if test "x$DTRACE_DEP_MISSING" = "xtrue"; then 171 AC_MSG_RESULT([no, missing dependencies]) 172 HELP_MSG_MISSING_DEPENDENCY([dtrace]) 173 AC_MSG_ERROR([Cannot enable dtrace with missing dependencies. See above. $HELP_MSG]) 174 else 175 INCLUDE_DTRACE=true 176 AC_MSG_RESULT([yes, forced]) 177 fi 178 elif test "x$enable_dtrace" = "xno"; then 179 INCLUDE_DTRACE=false 180 AC_MSG_RESULT([no, forced]) 181 elif test "x$enable_dtrace" = "xauto" || test "x$enable_dtrace" = "x"; then 182 if test "x$DTRACE_DEP_MISSING" = "xtrue"; then 183 INCLUDE_DTRACE=false 184 AC_MSG_RESULT([no, missing dependencies]) 185 else 186 INCLUDE_DTRACE=true 187 AC_MSG_RESULT([yes, dependencies present]) 188 fi 189 else 190 AC_MSG_ERROR([Invalid value for --enable-dtrace: $enable_dtrace]) 191 fi 192]) 193 194################################################################################ 195# Check if AOT should be enabled 196# 197AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_AOT], 198[ 199 AC_ARG_ENABLE([aot], [AS_HELP_STRING([--enable-aot@<:@=yes/no/auto@:>@], 200 [enable ahead of time compilation feature. Default is auto, where aot is enabled if all dependencies are present.])]) 201 202 if test "x$enable_aot" = "x" || test "x$enable_aot" = "xauto"; then 203 ENABLE_AOT="true" 204 elif test "x$enable_aot" = "xyes"; then 205 ENABLE_AOT="true" 206 elif test "x$enable_aot" = "xno"; then 207 ENABLE_AOT="false" 208 AC_MSG_CHECKING([if aot should be enabled]) 209 AC_MSG_RESULT([no, forced]) 210 else 211 AC_MSG_ERROR([Invalid value for --enable-aot: $enable_aot]) 212 fi 213 214 if test "x$ENABLE_AOT" = "xtrue"; then 215 # Only enable AOT on X64 platforms. 216 if test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then 217 if test -e "$HOTSPOT_TOPDIR/src/jdk.aot"; then 218 if test -e "$HOTSPOT_TOPDIR/src/jdk.vm.compiler"; then 219 ENABLE_AOT="true" 220 else 221 ENABLE_AOT="false" 222 if test "x$enable_aot" = "xyes"; then 223 AC_MSG_ERROR([Cannot build AOT without hotspot/src/jdk.vm.compiler sources. Remove --enable-aot.]) 224 fi 225 fi 226 else 227 ENABLE_AOT="false" 228 if test "x$enable_aot" = "xyes"; then 229 AC_MSG_ERROR([Cannot build AOT without hotspot/src/jdk.aot sources. Remove --enable-aot.]) 230 fi 231 fi 232 else 233 ENABLE_AOT="false" 234 if test "x$enable_aot" = "xyes"; then 235 AC_MSG_ERROR([AOT is currently only supported on Linux-x86_64. Remove --enable-aot.]) 236 fi 237 fi 238 fi 239 240 AC_SUBST(ENABLE_AOT) 241]) 242 243############################################################################### 244# Set up all JVM features for each JVM variant. 245# 246AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES], 247[ 248 # The user can in some cases supply additional jvm features. For the custom 249 # variant, this defines the entire variant. 250 AC_ARG_WITH([jvm-features], [AS_HELP_STRING([--with-jvm-features], 251 [additional JVM features to enable (separated by comma), use '--help' to show possible values @<:@none@:>@])]) 252 if test "x$with_jvm_features" != x; then 253 AC_MSG_CHECKING([additional JVM features]) 254 JVM_FEATURES=`$ECHO $with_jvm_features | $SED -e 's/,/ /g'` 255 AC_MSG_RESULT([$JVM_FEATURES]) 256 fi 257 258 # Override hotspot cpu definitions for ARM platforms 259 if test "x$OPENJDK_TARGET_CPU" = xarm; then 260 HOTSPOT_TARGET_CPU=arm_32 261 HOTSPOT_TARGET_CPU_DEFINE="ARM32" 262 JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char" 263 JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char" 264 elif test "x$OPENJDK_TARGET_CPU" = xaarch64 && test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 265 HOTSPOT_TARGET_CPU=arm_64 266 HOTSPOT_TARGET_CPU_ARCH=arm 267 JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char" 268 JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char" 269 fi 270 271 # Verify that dependencies are met for explicitly set features. 272 if HOTSPOT_CHECK_JVM_FEATURE(jvmti) && ! HOTSPOT_CHECK_JVM_FEATURE(services); then 273 AC_MSG_ERROR([Specified JVM feature 'jvmti' requires feature 'services']) 274 fi 275 276 if HOTSPOT_CHECK_JVM_FEATURE(management) && ! HOTSPOT_CHECK_JVM_FEATURE(nmt); then 277 AC_MSG_ERROR([Specified JVM feature 'management' requires feature 'nmt']) 278 fi 279 280 if HOTSPOT_CHECK_JVM_FEATURE(jvmci) && ! (HOTSPOT_CHECK_JVM_FEATURE(compiler1) || HOTSPOT_CHECK_JVM_FEATURE(compiler2)); then 281 AC_MSG_ERROR([Specified JVM feature 'jvmci' requires feature 'compiler2' or 'compiler1']) 282 fi 283 284 if HOTSPOT_CHECK_JVM_FEATURE(compiler2) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then 285 AC_MSG_ERROR([Specified JVM feature 'compiler2' requires feature 'all-gcs']) 286 fi 287 288 if HOTSPOT_CHECK_JVM_FEATURE(vm-structs) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then 289 AC_MSG_ERROR([Specified JVM feature 'vm-structs' requires feature 'all-gcs']) 290 fi 291 292 # Turn on additional features based on other parts of configure 293 if test "x$INCLUDE_DTRACE" = "xtrue"; then 294 JVM_FEATURES="$JVM_FEATURES dtrace" 295 else 296 if HOTSPOT_CHECK_JVM_FEATURE(dtrace); then 297 AC_MSG_ERROR([To enable dtrace, you must use --enable-dtrace]) 298 fi 299 fi 300 301 if test "x$STATIC_BUILD" = "xtrue"; then 302 JVM_FEATURES="$JVM_FEATURES static-build" 303 else 304 if HOTSPOT_CHECK_JVM_FEATURE(static-build); then 305 AC_MSG_ERROR([To enable static-build, you must use --enable-static-build]) 306 fi 307 fi 308 309 if ! HOTSPOT_CHECK_JVM_VARIANT(zero) && ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then 310 if HOTSPOT_CHECK_JVM_FEATURE(zero); then 311 AC_MSG_ERROR([To enable zero/zeroshark, you must use --with-jvm-variants=zero/zeroshark]) 312 fi 313 fi 314 315 if ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then 316 if HOTSPOT_CHECK_JVM_FEATURE(shark); then 317 AC_MSG_ERROR([To enable shark, you must use --with-jvm-variants=zeroshark]) 318 fi 319 fi 320 321 # Only enable jvmci on x86_64, sparcv9 and aarch64. 322 if test "x$OPENJDK_TARGET_CPU" = "xx86_64" || \ 323 test "x$OPENJDK_TARGET_CPU" = "xsparcv9" || \ 324 test "x$OPENJDK_TARGET_CPU" = "xaarch64" ; then 325 JVM_FEATURES_jvmci="jvmci" 326 else 327 JVM_FEATURES_jvmci="" 328 fi 329 330 AC_MSG_CHECKING([if jdk.vm.compiler should be built]) 331 if HOTSPOT_CHECK_JVM_FEATURE(graal); then 332 AC_MSG_RESULT([yes, forced]) 333 if test "x$JVM_FEATURES_jvmci" != "xjvmci" ; then 334 AC_MSG_ERROR([Specified JVM feature 'graal' requires feature 'jvmci']) 335 fi 336 INCLUDE_GRAAL="true" 337 else 338 # By default enable graal build where AOT is available 339 if test "x$ENABLE_AOT" = "xtrue"; then 340 AC_MSG_RESULT([yes]) 341 JVM_FEATURES_graal="graal" 342 INCLUDE_GRAAL="true" 343 else 344 AC_MSG_RESULT([no]) 345 JVM_FEATURES_graal="" 346 INCLUDE_GRAAL="false" 347 fi 348 fi 349 350 AC_SUBST(INCLUDE_GRAAL) 351 352 AC_MSG_CHECKING([if aot should be enabled]) 353 if test "x$ENABLE_AOT" = "xtrue"; then 354 if test "x$enable_aot" = "xyes"; then 355 AC_MSG_RESULT([yes, forced]) 356 else 357 AC_MSG_RESULT([yes]) 358 fi 359 JVM_FEATURES_aot="aot" 360 else 361 if test "x$enable_aot" = "xno"; then 362 AC_MSG_RESULT([no, forced]) 363 else 364 AC_MSG_RESULT([no]) 365 fi 366 JVM_FEATURES_aot="" 367 fi 368 369 if test "x$OPENJDK_TARGET_CPU" = xarm ; then 370 # Default to use link time optimizations on minimal on arm 371 JVM_FEATURES_link_time_opt="link-time-opt" 372 else 373 JVM_FEATURES_link_time_opt="" 374 fi 375 376 # All variants but minimal (and custom) get these features 377 NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt cds" 378 379 # Enable features depending on variant. 380 JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci $JVM_FEATURES_aot $JVM_FEATURES_graal" 381 JVM_FEATURES_client="compiler1 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci" 382 JVM_FEATURES_core="$NON_MINIMAL_FEATURES $JVM_FEATURES" 383 JVM_FEATURES_minimal="compiler1 minimal $JVM_FEATURES $JVM_FEATURES_link_time_opt" 384 JVM_FEATURES_zero="zero $NON_MINIMAL_FEATURES $JVM_FEATURES" 385 JVM_FEATURES_zeroshark="zero shark $NON_MINIMAL_FEATURES $JVM_FEATURES" 386 JVM_FEATURES_custom="$JVM_FEATURES" 387 388 AC_SUBST(JVM_FEATURES_server) 389 AC_SUBST(JVM_FEATURES_client) 390 AC_SUBST(JVM_FEATURES_core) 391 AC_SUBST(JVM_FEATURES_minimal) 392 AC_SUBST(JVM_FEATURES_zero) 393 AC_SUBST(JVM_FEATURES_zeroshark) 394 AC_SUBST(JVM_FEATURES_custom) 395 396 # Used for verification of Makefiles by check-jvm-feature 397 AC_SUBST(VALID_JVM_FEATURES) 398 399 # We don't support --with-jvm-interpreter anymore, use zero instead. 400 BASIC_DEPRECATED_ARG_WITH(jvm-interpreter) 401]) 402 403############################################################################### 404# Validate JVM features once all setup is complete, including custom setup. 405# 406AC_DEFUN_ONCE([HOTSPOT_VALIDATE_JVM_FEATURES], 407[ 408 # Keep feature lists sorted and free of duplicates 409 JVM_FEATURES_server="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_server | $SORT -u))" 410 JVM_FEATURES_client="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_client | $SORT -u))" 411 JVM_FEATURES_core="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_core | $SORT -u))" 412 JVM_FEATURES_minimal="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_minimal | $SORT -u))" 413 JVM_FEATURES_zero="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zero | $SORT -u))" 414 JVM_FEATURES_zeroshark="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zeroshark | $SORT -u))" 415 JVM_FEATURES_custom="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_custom | $SORT -u))" 416 417 # Validate features 418 for variant in $JVM_VARIANTS; do 419 AC_MSG_CHECKING([JVM features for JVM variant '$variant']) 420 features_var_name=JVM_FEATURES_$variant 421 JVM_FEATURES_TO_TEST=${!features_var_name} 422 AC_MSG_RESULT([$JVM_FEATURES_TO_TEST]) 423 NEEDLE=${VALID_JVM_FEATURES// /$'\n'} 424 STACK=${JVM_FEATURES_TO_TEST// /$'\n'} 425 INVALID_FEATURES=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"` 426 if test "x$INVALID_FEATURES" != x; then 427 AC_MSG_ERROR([Invalid JVM feature(s): $INVALID_FEATURES]) 428 fi 429 done 430]) 431 432################################################################################ 433# 434# Specify which sources will be used to build the 64-bit ARM port 435# 436# --with-cpu-port=arm64 will use hotspot/src/cpu/arm 437# --with-cpu-port=aarch64 will use hotspot/src/cpu/aarch64 438# 439AC_DEFUN([SETUP_HOTSPOT_TARGET_CPU_PORT], 440[ 441 AC_ARG_WITH(cpu-port, [AS_HELP_STRING([--with-cpu-port], 442 [specify sources to use for Hotspot 64-bit ARM port (arm64,aarch64) @<:@aarch64@:>@ ])]) 443 444 if test "x$with_cpu_port" != x; then 445 if test "x$OPENJDK_TARGET_CPU" != xaarch64; then 446 AC_MSG_ERROR([--with-cpu-port only available on aarch64]) 447 fi 448 if test "x$with_cpu_port" != xarm64 && \ 449 test "x$with_cpu_port" != xaarch64; then 450 AC_MSG_ERROR([--with-cpu-port must specify arm64 or aarch64]) 451 fi 452 HOTSPOT_TARGET_CPU_PORT="$with_cpu_port" 453 fi 454]) 455 456 457################################################################################ 458# Check if gtest should be built 459# 460AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_GTEST], 461[ 462 AC_ARG_ENABLE([hotspot-gtest], [AS_HELP_STRING([--disable-hotspot-gtest], 463 [Disables building of the Hotspot unit tests])]) 464 465 if test -e "$HOTSPOT_TOPDIR/test/native"; then 466 GTEST_DIR_EXISTS="true" 467 else 468 GTEST_DIR_EXISTS="false" 469 fi 470 471 AC_MSG_CHECKING([if Hotspot gtest unit tests should be built]) 472 if test "x$enable_hotspot_gtest" = "xyes"; then 473 if test "x$GTEST_DIR_EXISTS" = "xtrue"; then 474 AC_MSG_RESULT([yes, forced]) 475 BUILD_GTEST="true" 476 else 477 AC_MSG_ERROR([Cannot build gtest without the test source]) 478 fi 479 elif test "x$enable_hotspot_gtest" = "xno"; then 480 AC_MSG_RESULT([no, forced]) 481 BUILD_GTEST="false" 482 elif test "x$enable_hotspot_gtest" = "x"; then 483 if test "x$GTEST_DIR_EXISTS" = "xtrue"; then 484 AC_MSG_RESULT([yes]) 485 BUILD_GTEST="true" 486 else 487 AC_MSG_RESULT([no]) 488 BUILD_GTEST="false" 489 fi 490 else 491 AC_MSG_ERROR([--enable-gtest must be either yes or no]) 492 fi 493 494 AC_SUBST(BUILD_GTEST) 495]) 496