hotspot.m4 revision 2793:752f5fb6ca0c
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 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 "$HOTSPOT_TOPDIR/src/jdk.internal.vm.compiler"; then
219          ENABLE_AOT="true"
220        else
221          ENABLE_AOT="false"
222          if test "x$enable_aot" = "xyes"; then
223            AC_MSG_ERROR([Cannot build AOT without hotspot/src/jdk.internal.vm.compiler sources. Remove --enable-aot.])
224          fi
225        fi
226      else
227        ENABLE_AOT="false"
228        if test "x$enable_aot" = "xyes"; then
229          AC_MSG_ERROR([Cannot build AOT without hotspot/src/jdk.aot sources. Remove --enable-aot.])
230        fi
231      fi
232    else
233      ENABLE_AOT="false"
234      if test "x$enable_aot" = "xyes"; then
235        AC_MSG_ERROR([AOT is currently only supported on 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#
246AC_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: $enable_cds])
257  fi
258
259  AC_SUBST(ENABLE_CDS)
260])
261
262###############################################################################
263# Set up all JVM features for each JVM variant.
264#
265AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],
266[
267  # The user can in some cases supply additional jvm features. For the custom
268  # variant, this defines the entire variant.
269  AC_ARG_WITH([jvm-features], [AS_HELP_STRING([--with-jvm-features],
270      [additional JVM features to enable (separated by comma),  use '--help' to show possible values @<:@none@:>@])])
271  if test "x$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#
432AC_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): $INVALID_FEATURES])
454    fi
455  done
456])
457
458################################################################################
459#
460# Specify which sources will be used to build the 64-bit ARM port
461#
462# --with-cpu-port=arm64   will use hotspot/src/cpu/arm
463# --with-cpu-port=aarch64 will use hotspot/src/cpu/aarch64
464#
465AC_DEFUN([SETUP_HOTSPOT_TARGET_CPU_PORT],
466[
467  AC_ARG_WITH(cpu-port, [AS_HELP_STRING([--with-cpu-port],
468      [specify sources to use for Hotspot 64-bit ARM port (arm64,aarch64) @<:@aarch64@:>@ ])])
469
470  if test "x$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#
486AC_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 "$HOTSPOT_TOPDIR/test/native"; then
492    GTEST_DIR_EXISTS="true"
493  else
494    GTEST_DIR_EXISTS="false"
495  fi
496
497  AC_MSG_CHECKING([if Hotspot gtest unit tests should be built])
498  if test "x$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])
522