rev 47445 : 8171853: Remove Shark compiler

   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 shark 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 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.
  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 " =~ " $1 " ]] ] ])
  57 
  58 ###############################################################################
  59 # Check which variants of the JVM that we want to build. Available variants are:
  60 #   server: normal interpreter, and a tiered C1/C2 compiler
  61 #   client: normal interpreter, and C1 (no C2 compiler)
  62 #   minimal: reduced form of client with optional features stripped out
  63 #   core: normal interpreter only, no compiler
  64 #   zero: C++ based interpreter only, no compiler
  65 #   zeroshark: C++ based interpreter, and a llvm-based compiler
  66 #   custom: baseline JVM with no default features
  67 #
  68 AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_VARIANTS],
  69 [
  70   AC_ARG_WITH([jvm-variants], [AS_HELP_STRING([--with-jvm-variants],
  71       [JVM variants (separated by commas) to build (server,client,minimal,core,zero,zeroshark,custom) @<:@server@:>@])])
  72 
  73   SETUP_HOTSPOT_TARGET_CPU_PORT
  74 
  75   if test "x$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 #
 146 AC_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: $enable_dtrace])
 191   fi
 192 ])
 193 
 194 ################################################################################
 195 # Check if AOT should be enabled
 196 #
 197 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_AOT],
 198 [
 199   AC_ARG_ENABLE([aot], [AS_HELP_STRING([--enable-aot@<:@=yes/no/auto@:>@],
 200       [enable ahead of time compilation feature. Default is auto, where aot is enabled if all dependencies are present.])])
 201 
 202   if test "x$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$OPENJDK_TARGET_CPU" = "xx86_64"; then
 217       if test -e "${TOPDIR}/src/jdk.aot"; then
 218         if test -e "${TOPDIR}/src/jdk.internal.vm.compiler"; then
 219           ENABLE_AOT="true"
 220         else
 221           ENABLE_AOT="false"
 222           if test "x$enable_aot" = "xyes"; then
 223             AC_MSG_ERROR([Cannot build AOT without src/jdk.internal.vm.compiler sources. Remove --enable-aot.])
 224           fi
 225         fi
 226       else
 227         ENABLE_AOT="false"
 228         if test "x$enable_aot" = "xyes"; then
 229           AC_MSG_ERROR([Cannot build AOT without src/jdk.aot sources. Remove --enable-aot.])
 230         fi
 231       fi
 232     else
 233       ENABLE_AOT="false"
 234       if test "x$enable_aot" = "xyes"; then
 235         AC_MSG_ERROR([AOT is currently only supported on x86_64. Remove --enable-aot.])
 236       fi
 237     fi
 238   fi
 239 
 240   AC_SUBST(ENABLE_AOT)
 241 ])
 242 
 243 ################################################################################
 244 # Allow to disable CDS
 245 #
 246 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_CDS],
 247 [
 248   AC_ARG_ENABLE([cds], [AS_HELP_STRING([--enable-cds@<:@=yes/no@:>@],
 249       [enable class data sharing feature in non-minimal VM. Default is yes.])])
 250 
 251   if test "x$enable_cds" = "x" || test "x$enable_cds" = "xyes"; then
 252     ENABLE_CDS="true"
 253   elif test "x$enable_cds" = "xno"; then
 254     ENABLE_CDS="false"
 255   else
 256     AC_MSG_ERROR([Invalid value for --enable-cds: $enable_cds])
 257   fi
 258 
 259   AC_SUBST(ENABLE_CDS)
 260 ])
 261 
 262 ###############################################################################
 263 # Set up all JVM features for each JVM variant.
 264 #
 265 AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],
 266 [
 267   # The user can in some cases supply additional jvm features. For the custom
 268   # variant, this defines the entire variant.
 269   AC_ARG_WITH([jvm-features], [AS_HELP_STRING([--with-jvm-features],
 270       [additional JVM features to enable (separated by comma),  use '--help' to show possible values @<:@none@:>@])])
 271   if test "x$with_jvm_features" != x; then
 272     AC_MSG_CHECKING([additional JVM features])
 273     JVM_FEATURES=`$ECHO $with_jvm_features | $SED -e 's/,/ /g'`
 274     AC_MSG_RESULT([$JVM_FEATURES])
 275   fi
 276 
 277   # Override hotspot cpu definitions for ARM platforms
 278   if test "x$OPENJDK_TARGET_CPU" = xarm; then
 279     HOTSPOT_TARGET_CPU=arm_32
 280     HOTSPOT_TARGET_CPU_DEFINE="ARM32"
 281     JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char"
 282     JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char"
 283   elif test "x$OPENJDK_TARGET_CPU" = xaarch64 && test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
 284     HOTSPOT_TARGET_CPU=arm_64
 285     HOTSPOT_TARGET_CPU_ARCH=arm
 286     JVM_LDFLAGS="$JVM_LDFLAGS -fsigned-char"
 287     JVM_CFLAGS="$JVM_CFLAGS -DARM -fsigned-char"
 288   fi
 289 
 290   # Verify that dependencies are met for explicitly set features.
 291   if HOTSPOT_CHECK_JVM_FEATURE(jvmti) && ! HOTSPOT_CHECK_JVM_FEATURE(services); then
 292     AC_MSG_ERROR([Specified JVM feature 'jvmti' requires feature 'services'])
 293   fi
 294 
 295   if HOTSPOT_CHECK_JVM_FEATURE(management) && ! HOTSPOT_CHECK_JVM_FEATURE(nmt); then
 296     AC_MSG_ERROR([Specified JVM feature 'management' requires feature 'nmt'])
 297   fi
 298 
 299   if HOTSPOT_CHECK_JVM_FEATURE(jvmci) && ! (HOTSPOT_CHECK_JVM_FEATURE(compiler1) || HOTSPOT_CHECK_JVM_FEATURE(compiler2)); then
 300     AC_MSG_ERROR([Specified JVM feature 'jvmci' requires feature 'compiler2' or 'compiler1'])
 301   fi
 302 
 303   if HOTSPOT_CHECK_JVM_FEATURE(compiler2) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then
 304     AC_MSG_ERROR([Specified JVM feature 'compiler2' requires feature 'all-gcs'])
 305   fi
 306 
 307   if HOTSPOT_CHECK_JVM_FEATURE(vm-structs) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then
 308     AC_MSG_ERROR([Specified JVM feature 'vm-structs' requires feature 'all-gcs'])
 309   fi
 310 
 311   # Turn on additional features based on other parts of configure
 312   if test "x$INCLUDE_DTRACE" = "xtrue"; then
 313     JVM_FEATURES="$JVM_FEATURES dtrace"
 314   else
 315     if HOTSPOT_CHECK_JVM_FEATURE(dtrace); then
 316       AC_MSG_ERROR([To enable dtrace, you must use --enable-dtrace])
 317     fi
 318   fi
 319 
 320   if test "x$STATIC_BUILD" = "xtrue"; then
 321     JVM_FEATURES="$JVM_FEATURES static-build"
 322   else
 323     if HOTSPOT_CHECK_JVM_FEATURE(static-build); then
 324       AC_MSG_ERROR([To enable static-build, you must use --enable-static-build])
 325     fi
 326   fi
 327 
 328   if ! HOTSPOT_CHECK_JVM_VARIANT(zero) && ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then
 329     if HOTSPOT_CHECK_JVM_FEATURE(zero); then
 330       AC_MSG_ERROR([To enable zero/zeroshark, you must use --with-jvm-variants=zero/zeroshark])
 331     fi
 332   fi
 333 
 334   if ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then
 335     if HOTSPOT_CHECK_JVM_FEATURE(shark); then
 336       AC_MSG_ERROR([To enable shark, you must use --with-jvm-variants=zeroshark])
 337     fi
 338   fi
 339 
 340   # Only enable jvmci on x86_64, sparcv9 and aarch64.
 341   if test "x$OPENJDK_TARGET_CPU" = "xx86_64" || \
 342      test "x$OPENJDK_TARGET_CPU" = "xsparcv9" || \
 343      test "x$OPENJDK_TARGET_CPU" = "xaarch64" ; then
 344     JVM_FEATURES_jvmci="jvmci"
 345   else
 346     JVM_FEATURES_jvmci=""
 347   fi
 348 
 349   AC_MSG_CHECKING([if jdk.internal.vm.compiler should be built])
 350   if HOTSPOT_CHECK_JVM_FEATURE(graal); then
 351     AC_MSG_RESULT([yes, forced])
 352     if test "x$JVM_FEATURES_jvmci" != "xjvmci" ; then
 353       AC_MSG_ERROR([Specified JVM feature 'graal' requires feature 'jvmci'])
 354     fi
 355     INCLUDE_GRAAL="true"
 356   else
 357     # By default enable graal build on linux-x64 or where AOT is available.
 358     # graal build requires jvmci.
 359     if test "x$JVM_FEATURES_jvmci" = "xjvmci" && \
 360         (test "x$OPENJDK_TARGET_CPU" = "xx86_64" && \
 361          test "x$OPENJDK_TARGET_OS" = "xlinux" || \
 362          test "x$ENABLE_AOT" = "xtrue") ; then
 363       AC_MSG_RESULT([yes])
 364       JVM_FEATURES_graal="graal"
 365       INCLUDE_GRAAL="true"
 366     else
 367       AC_MSG_RESULT([no])
 368       JVM_FEATURES_graal=""
 369       INCLUDE_GRAAL="false"
 370     fi
 371   fi
 372 
 373   AC_SUBST(INCLUDE_GRAAL)
 374 
 375   AC_MSG_CHECKING([if aot should be enabled])
 376   if test "x$ENABLE_AOT" = "xtrue"; then
 377     if test "x$enable_aot" = "xyes"; then
 378       AC_MSG_RESULT([yes, forced])
 379     else
 380       AC_MSG_RESULT([yes])
 381     fi
 382     JVM_FEATURES_aot="aot"
 383   else
 384     if test "x$enable_aot" = "xno"; then
 385       AC_MSG_RESULT([no, forced])
 386     else
 387       AC_MSG_RESULT([no])
 388     fi
 389     JVM_FEATURES_aot=""
 390   fi
 391 
 392   if test "x$OPENJDK_TARGET_CPU" = xarm ; then
 393     # Default to use link time optimizations on minimal on arm
 394     JVM_FEATURES_link_time_opt="link-time-opt"
 395   else
 396     JVM_FEATURES_link_time_opt=""
 397   fi
 398 
 399   # All variants but minimal (and custom) get these features
 400   NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti vm-structs jni-check services management all-gcs nmt"
 401   if test "x$ENABLE_CDS" = "xtrue"; then
 402     NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cds"
 403   fi                                            
 404 
 405   # Enable features depending on variant.
 406   JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci $JVM_FEATURES_aot $JVM_FEATURES_graal"
 407   JVM_FEATURES_client="compiler1 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci"
 408   JVM_FEATURES_core="$NON_MINIMAL_FEATURES $JVM_FEATURES"
 409   JVM_FEATURES_minimal="compiler1 minimal $JVM_FEATURES $JVM_FEATURES_link_time_opt"
 410   JVM_FEATURES_zero="zero $NON_MINIMAL_FEATURES $JVM_FEATURES"
 411   JVM_FEATURES_zeroshark="zero shark $NON_MINIMAL_FEATURES $JVM_FEATURES"
 412   JVM_FEATURES_custom="$JVM_FEATURES"
 413 
 414   AC_SUBST(JVM_FEATURES_server)
 415   AC_SUBST(JVM_FEATURES_client)
 416   AC_SUBST(JVM_FEATURES_core)
 417   AC_SUBST(JVM_FEATURES_minimal)
 418   AC_SUBST(JVM_FEATURES_zero)
 419   AC_SUBST(JVM_FEATURES_zeroshark)
 420   AC_SUBST(JVM_FEATURES_custom)
 421 
 422   # Used for verification of Makefiles by check-jvm-feature
 423   AC_SUBST(VALID_JVM_FEATURES)
 424 
 425   # We don't support --with-jvm-interpreter anymore, use zero instead.
 426   BASIC_DEPRECATED_ARG_WITH(jvm-interpreter)
 427 ])
 428 
 429 ###############################################################################
 430 # Validate JVM features once all setup is complete, including custom setup.
 431 #
 432 AC_DEFUN_ONCE([HOTSPOT_VALIDATE_JVM_FEATURES],
 433 [
 434   # Keep feature lists sorted and free of duplicates
 435   JVM_FEATURES_server="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_server | $SORT -u))"
 436   JVM_FEATURES_client="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_client | $SORT -u))"
 437   JVM_FEATURES_core="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_core | $SORT -u))"
 438   JVM_FEATURES_minimal="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_minimal | $SORT -u))"
 439   JVM_FEATURES_zero="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zero | $SORT -u))"
 440   JVM_FEATURES_zeroshark="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zeroshark | $SORT -u))"
 441   JVM_FEATURES_custom="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_custom | $SORT -u))"
 442 
 443   # Validate features
 444   for variant in $JVM_VARIANTS; do
 445     AC_MSG_CHECKING([JVM features for JVM variant '$variant'])
 446     features_var_name=JVM_FEATURES_$variant
 447     JVM_FEATURES_TO_TEST=${!features_var_name}
 448     AC_MSG_RESULT([$JVM_FEATURES_TO_TEST])
 449     NEEDLE=${VALID_JVM_FEATURES// /$'\n'}
 450     STACK=${JVM_FEATURES_TO_TEST// /$'\n'}
 451     INVALID_FEATURES=`$GREP -Fvx "${NEEDLE}" <<< "${STACK}"`
 452     if test "x$INVALID_FEATURES" != x; then
 453       AC_MSG_ERROR([Invalid JVM feature(s): $INVALID_FEATURES])
 454     fi
 455   done
 456 ])
 457 
 458 ################################################################################
 459 #
 460 # Specify which sources will be used to build the 64-bit ARM port
 461 #
 462 # --with-cpu-port=arm64   will use hotspot/src/cpu/arm
 463 # --with-cpu-port=aarch64 will use hotspot/src/cpu/aarch64
 464 #
 465 AC_DEFUN([SETUP_HOTSPOT_TARGET_CPU_PORT],
 466 [
 467   AC_ARG_WITH(cpu-port, [AS_HELP_STRING([--with-cpu-port],
 468       [specify sources to use for Hotspot 64-bit ARM port (arm64,aarch64) @<:@aarch64@:>@ ])])
 469 
 470   if test "x$with_cpu_port" != x; then
 471     if test "x$OPENJDK_TARGET_CPU" != xaarch64; then
 472       AC_MSG_ERROR([--with-cpu-port only available on aarch64])
 473     fi
 474     if test "x$with_cpu_port" != xarm64 && \
 475         test "x$with_cpu_port" != xaarch64; then
 476       AC_MSG_ERROR([--with-cpu-port must specify arm64 or aarch64])
 477     fi
 478     HOTSPOT_TARGET_CPU_PORT="$with_cpu_port"
 479   fi
 480 ])
 481 
 482 
 483 ################################################################################
 484 # Check if gtest should be built
 485 #
 486 AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_GTEST],
 487 [
 488   AC_ARG_ENABLE([hotspot-gtest], [AS_HELP_STRING([--disable-hotspot-gtest],
 489       [Disables building of the Hotspot unit tests])])
 490 
 491   if test -e "${TOPDIR}/test/hotspot/gtest"; then
 492     GTEST_DIR_EXISTS="true"
 493   else
 494     GTEST_DIR_EXISTS="false"
 495   fi
 496 
 497   AC_MSG_CHECKING([if Hotspot gtest unit tests should be built])
 498   if test "x$enable_hotspot_gtest" = "xyes"; then
 499     if test "x$GTEST_DIR_EXISTS" = "xtrue"; then
 500       AC_MSG_RESULT([yes, forced])
 501       BUILD_GTEST="true"
 502     else
 503       AC_MSG_ERROR([Cannot build gtest without the test source])
 504     fi
 505   elif test "x$enable_hotspot_gtest" = "xno"; then
 506     AC_MSG_RESULT([no, forced])
 507     BUILD_GTEST="false"
 508   elif test "x$enable_hotspot_gtest" = "x"; then
 509     if test "x$GTEST_DIR_EXISTS" = "xtrue"; then
 510       AC_MSG_RESULT([yes])
 511       BUILD_GTEST="true"
 512     else
 513       AC_MSG_RESULT([no])
 514       BUILD_GTEST="false"
 515     fi
 516   else
 517     AC_MSG_ERROR([--enable-gtest must be either yes or no])
 518   fi
 519 
 520   AC_SUBST(BUILD_GTEST)
 521 ])
--- EOF ---