1 # javacomp.m4 serial 11
2 dnl Copyright (C) 2001-2003, 2006-2007, 2009 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 # Prerequisites of javacomp.sh.
8 # gt_JAVACOMP([source-version], [target-version])
9 # Sets HAVE_JAVACOMP to nonempty if javacomp.sh will allow Java source code
10 # according to source-version to be compiled to Java bytecode classes in the
11 # target-version format.
13 # source-version can be: support for
16 # 1.5 generic classes and methods
17 # 1.6 (not yet supported)
19 # target-version can be: classfile version:
26 # The classfile version of a .class file can be determined through the "file"
27 # command. More portably, the classfile major version can be determined through
28 # "od -A n -t d1 -j 7 -N 1 classfile".
29 # target-version can also be omitted. In this case, the required target-version
30 # is determined from the found JVM (see macro gt_JAVAEXEC):
31 # target-version for JVM
34 # 1.3 JDK/JRE 1.3, gij 3.3, 3.4
35 # 1.4 JDK/JRE 1.4, gij 4.0, 4.1
38 # Note: gij >= 3.3 can in some cases handle classes compiled with -target 1.4,
39 # and gij >= 4.1 can in some cases partially handle classes compiled with
40 # -target 1.5, but I have no idea how complete this support is.
42 # Specifying target-version is useful when building a library (.jar) that is
43 # useful outside the given package. Omitting target-version is useful when
44 # building an application.
46 # It is unreasonable to ask for:
47 # - target-version < 1.4 with source-version >= 1.4, or
48 # - target-version < 1.5 with source-version >= 1.5, or
49 # - target-version < 1.6 with source-version >= 1.6,
50 # because even Sun's javac doesn't support these combinations.
52 # It is redundant to ask for a target-version > source-version, since the
53 # smaller target-version = source-version will also always work and newer JVMs
54 # support the older target-versions too. Except for the case
55 # target-version = 1.4, source-version = 1.3, which allows gcj versions 3.0
58 AC_DEFUN([gt_JAVACOMP],
60 ifelse([$2], [], [AC_REQUIRE([gt_JAVAEXEC])], [])
62 #if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
65 ], CLASSPATH_SEPARATOR=';', CLASSPATH_SEPARATOR=':')
67 test -n "$source_version" || {
68 AC_MSG_ERROR([missing source-version argument to gt_@&t@JAVACOMP])
71 [if test -n "$HAVE_JAVAEXEC"; then
72 dnl Use $CONF_JAVA to determine the JVM's version.
74 cat > conftestver.java <<EOF
75 public class conftestver {
76 public static void main (String[] args) {
77 System.out.println(System.getProperty("java.specification.version"));
82 dnl A precompiled version of conftestver.java, compiled with
83 dnl "javac -target 1.1". This avoids having to compile conftestver.java
84 dnl during each test for a suitable Java compiler.
85 dnl For the conversion from binary to this ASCII encapsulation, avoiding
86 dnl to assume the presence of uudecode, use the command
87 dnl $ od -A n -t o1 < conftestver.class | tr ' ' '\012'| sort | uniq | sed -e '/^$/d' -e 's,^,\\,' | tr -d '\012'
88 dnl and the long tr command in opposite direction.
89 dnl Finally move the position corresponding to \055 to the last position,
90 dnl to work around a coreutils-5.x bug.
91 echo 'xyvw!$!H!C,!)!2+!3!4*!5,!3!6,!7!8)!9)!:"!(LdhdmM"!$EFV"!%Ni_a"!1PdhaQngYakUXYfa"!%gXdh"!8EWPeXoXJfXhcJTmkdhcKFV"!,TinkZaOdfa"!2ZihbmalmoakIeXoX.!*!+)!;.!<!="!<eXoXIljaZdbdZXmdihIoakldih.!>!?)!@.!A!B"!-Zihbmalmoak"!2eXoXJfXhcJRYeaZm"!2eXoXJfXhcJTplmag"!$inm"!7PeXoXJdiJSkdhmTmkaXgK"!-camSkijakmp"!DEPeXoXJfXhcJTmkdhcKFPeXoXJfXhcJTmkdhcK"!5eXoXJdiJSkdhmTmkaXg"!)jkdhmfh"!7EPeXoXJfXhcJTmkdhcKFV!C!(!)!!!!!#!"!*!+!"!,!!!?!"!"!!!&Gt!"q!!!"!-!!!(!"!!!"!+!.!/!"!,!!!E!#!"!!!.r!#4$u!%s!&q!!!"!-!!!,!#!!!$!-!%!"!0!!!#!1' \
93 | tr '!"#$%&()*+,-./0123456789:;<=>?@ABCDEFGIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyzH' '\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\046\050\051\052\056\057\073\074\076\103\106\114\116\117\120\123\124\126\133\141\142\143\144\145\146\147\151\152\154\155\156\157\160\162\163\164\165\166\171\261\262\266\267\270\272\276\312\376\055' \
97 echo "$as_me:__oline__: CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver" >&AS_MESSAGE_LOG_FD
98 CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver 2>&AS_MESSAGE_LOG_FD
100 case "$target_version" in
101 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6) ;;
103 dnl JDK 1.1.X returns null.
104 target_version=1.1 ;;
105 *) AC_MSG_WARN([unknown target-version $target_version, please update gt_@&t@JAVACOMP macro])
106 target_version=1.1 ;;
113 case "$source_version" in
114 1.3) goodcode='class conftest {}'
115 failcode='class conftestfail { static { assert(true); } }' ;;
116 1.4) goodcode='class conftest { static { assert(true); } }'
117 failcode='class conftestfail<T> { T foo() { return null; } }' ;;
118 1.5) goodcode='class conftest<T> { T foo() { return null; } }'
119 failcode='class conftestfail syntax error' ;;
120 *) AC_MSG_ERROR([invalid source-version argument to gt_@&t@JAVACOMP: $source_version]) ;;
122 case "$target_version" in
129 *) AC_MSG_ERROR([invalid target-version argument to gt_@&t@JAVACOMP: $target_version]) ;;
131 # Function to output the classfile version of a file (8th byte) in decimal.
132 if od -A x < /dev/null >/dev/null 2>/dev/null; then
134 func_classfile_version ()
136 od -A n -t d1 -j 7 -N 1 "[$]1"
140 func_classfile_version ()
142 dd if="[$]1" bs=1 count=1 skip=7 2>/dev/null | hexdump -e '1/1 "%3d "'
146 AC_MSG_CHECKING([for Java compiler])
148 dnl The support of GNU gcj for target-version and source-version:
150 dnl gcj 3.0.4 to 4.2 does not have a way to specify the target-version.
151 dnl It always assumes target-version=1.4 but labels the class files as 1.1.
152 dnl One consequence of this is that gcj compiles GetURL.java to invalid
153 dnl bytecode, which crashes with a VerifyError when executed by Sun Java
154 dnl 1.3.1. The bug is registered as java/7066, see
155 dnl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7066
156 dnl gcj 4.3 and newer has an option -ftarget=1.X.
158 dnl For gcj < 3.3, the source-version always is 1.3.
159 dnl For 3.3 <= gcj < 4.3, the source-version defaults to 1.4; option
160 dnl "-fno-assert" switches to source-version 1.3.
161 dnl gcj >= 4.3 has an option -fsource=1.X.
163 dnl The support of Sun javac for target-version and source-version:
165 dnl javac 1.3: -target 1.1 1.2 1.3 default: 1.1
166 dnl source always: 1.3
168 dnl javac 1.4: -target 1.1 1.2 1.3 1.4 default: 1.2
169 dnl -source 1.3 1.4 default: 1.3
170 dnl -target 1.1/1.2/1.3 only possible with -source 1.3 or no -source
172 dnl javac 1.5: -target 1.1 1.2 1.3 1.4 1.5 default: 1.5
173 dnl -source 1.3 1.4 1.5 default: 1.5
174 dnl -target 1.1/1.2/1.3 only possible with -source 1.3
175 dnl -target 1.4 only possible with -source 1.3/1.4
177 dnl javac 1.6: -target 1.1 1.2 1.3 1.4 1.5 1.6 default: 1.6
178 dnl -source 1.3 1.4 1.5 1.6 default: 1.5
179 dnl -target 1.1/1.2/1.3 only possible with -source 1.3
180 dnl -target 1.4 only possible with -source 1.3/1.4
181 dnl -target 1.5 only possible with -source 1.3/1.4/1.5 or no -source
183 dnl The support of jikes for target-version and source-version:
185 dnl jikes 1.14 does not have a way to specify the target-version. It
186 dnl always assumes target-version=1.1.
188 dnl For jikes 1.14, the source-version always is 1.3.
197 cat > conftestlib.java <<EOF
198 public class conftestlib {
199 public static void main (String[] args) {
204 echo "$goodcode" > conftest.java
205 echo "$failcode" > conftestfail.java
206 dnl If the user has set the JAVAC environment variable, use that, if it
207 dnl satisfies the constraints (possibly after adding -target and -source
209 if test -n "$JAVAC"; then
210 dnl Try the original $JAVAC.
211 if $JAVAC --version 2>/dev/null | sed -e 1q | grep gcj > /dev/null; then
212 dnl It's a version of gcj.
214 if $JAVAC --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then
216 dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct.
219 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
220 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
222 && test -f conftest.class \
223 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
224 dnl Try adding -fsource option if it is useful.
226 rm -f conftestfail.class
227 if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
228 $JAVAC -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
230 && test -f conftest.class \
231 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
232 && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
233 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
235 && test -f conftestfail.class \
236 && ! { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
237 $JAVAC -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
239 CONF_JAVAC="$JAVAC -fsource=$source_version"
248 dnl Try with -fsource and -ftarget options.
250 rm -f conftestfail.class
251 if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
252 $JAVAC -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
254 && test -f conftest.class \
255 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
256 CONF_JAVAC="$JAVAC -fsource=$source_version -ftarget=$target_version"
262 dnl It's a version of gcj < 4.3. Ignore the version of conftest.class.
263 if test "$target_version" = 1.4 && test "$source_version" = 1.4; then
266 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
267 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
269 && test -f conftest.class; then
275 if test "$target_version" = 1.4 && test "$source_version" = 1.3; then
276 dnl Try $JAVAC and "$JAVAC -fno-assert". But add -fno-assert only if
277 dnl it makes a difference. (It could already be part of $JAVAC.)
280 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
281 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
283 && test -f conftest.class; then
286 javac_noassert_works=
288 if { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD
289 $JAVAC -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
291 && test -f conftest.class; then
292 javac_noassert_works=1
294 if test -n "$javac_works" && test -n "$javac_noassert_works"; then
295 rm -f conftestfail.class
296 if { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
297 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
299 && test -f conftestfail.class \
300 && ! { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
301 $JAVAC -fno-assert -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
303 dnl "$JAVAC -fno-assert" works better than $JAVAC.
307 if test -n "$javac_works"; then
312 if test -n "$javac_noassert_works"; then
313 CONF_JAVAC="$JAVAC -fno-assert"
322 dnl It's not gcj. Assume the classfile versions are correct.
325 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
326 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
328 && test -f conftest.class \
329 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
330 dnl Try adding -source option if it is useful.
332 rm -f conftestfail.class
333 if { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
334 $JAVAC -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
336 && test -f conftest.class \
337 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
338 && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
339 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
341 && test -f conftestfail.class \
342 && ! { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
343 $JAVAC -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
345 CONF_JAVAC="$JAVAC -source $source_version"
354 dnl Try with -target option alone. (Sun javac 1.3.1 has the -target
355 dnl option but no -source option.)
357 if { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
358 $JAVAC -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
360 && test -f conftest.class \
361 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
362 dnl Try adding -source option if it is useful.
364 rm -f conftestfail.class
365 if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
366 $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
368 && test -f conftest.class \
369 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
370 && { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
371 $JAVAC -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
373 && test -f conftestfail.class \
374 && ! { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
375 $JAVAC -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
377 CONF_JAVAC="$JAVAC -target $target_version -source $source_version"
381 CONF_JAVAC="$JAVAC -target $target_version"
386 dnl Maybe this -target option requires a -source option? Try with
387 dnl -target and -source options. (Supported by Sun javac 1.4 and
390 if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
391 $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
393 && test -f conftest.class \
394 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
395 CONF_JAVAC="$JAVAC -target $target_version -source $source_version"
403 if test -z "$HAVE_JAVACOMP"; then
404 pushdef([AC_MSG_CHECKING],[:])dnl
405 pushdef([AC_CHECKING],[:])dnl
406 pushdef([AC_MSG_RESULT],[:])dnl
407 AC_CHECK_PROG([HAVE_GCJ_IN_PATH], [gcj], [yes])
408 AC_CHECK_PROG([HAVE_JAVAC_IN_PATH], [javac], [yes])
409 AC_CHECK_PROG([HAVE_JIKES_IN_PATH], [jikes], [yes])
410 popdef([AC_MSG_RESULT])dnl
411 popdef([AC_CHECKING])dnl
412 popdef([AC_MSG_CHECKING])dnl
413 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_GCJ_IN_PATH"; then
414 dnl Test for a good gcj version (>= 3.0).
416 if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^3\.[01]/d' | grep '^[3-9]' >/dev/null; then
418 dnl See if libgcj.jar is well installed.
419 if { echo "$as_me:__oline__: gcj -C -d . conftestlib.java" >&AS_MESSAGE_LOG_FD
420 gcj -C -d . conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1
424 if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then
426 dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct.
429 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
430 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
432 && test -f conftest.class \
433 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
434 dnl Try adding -fsource option if it is useful.
436 rm -f conftestfail.class
437 if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
438 gcj -C -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
440 && test -f conftest.class \
441 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
442 && { echo "$as_me:__oline__: gcj -C -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
443 gcj -C -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
445 && test -f conftestfail.class \
446 && ! { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
447 gcj -C -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
449 CONF_JAVAC="gcj -C -fsource=$source_version"
458 dnl Try with -fsource and -ftarget options.
460 rm -f conftestfail.class
461 if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
462 gcj -C -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
464 && test -f conftest.class \
465 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
466 CONF_JAVAC="gcj -C -fsource=$source_version -ftarget=$target_version"
472 dnl It's a version of gcj < 4.3. Ignore the version of conftest.class.
473 dnl Now test whether it supports the desired target-version and
475 if test "$target_version" = 1.4 && test "$source_version" = 1.4; then
477 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
478 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
480 && test -f conftest.class; then
486 if test "$target_version" = 1.4 && test "$source_version" = 1.3; then
487 dnl Try gcj and "gcj -fno-assert". But add -fno-assert only if
488 dnl it works (not gcj < 3.3).
490 if { echo "$as_me:__oline__: gcj -C -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD
491 gcj -C -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
493 && test -f conftest.class; then
494 CONF_JAVAC="gcj -C -fno-assert"
499 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
500 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
502 && test -f conftest.class; then
514 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JAVAC_IN_PATH"; then
515 dnl Test whether javac is usable.
516 if { javac -version >/dev/null 2>/dev/null || test $? -le 2; } \
517 && ( if javac -help 2>&1 >/dev/null | grep at.dms.kjc.Main >/dev/null && javac -help 2>/dev/null | grep 'released.*2000' >/dev/null ; then exit 1; else exit 0; fi ); then
519 dnl Now test whether it supports the desired target-version and
522 if { echo "$as_me:__oline__: javac -d . conftest.java" >&AS_MESSAGE_LOG_FD
523 javac -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
525 && test -f conftest.class \
526 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
527 dnl Try adding -source option if it is useful.
529 rm -f conftestfail.class
530 if { echo "$as_me:__oline__: javac -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
531 javac -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
533 && test -f conftest.class \
534 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
535 && { echo "$as_me:__oline__: javac -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
536 javac -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
538 && test -f conftestfail.class \
539 && ! { echo "$as_me:__oline__: javac -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
540 javac -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
542 CONF_JAVAC="javac -source $source_version"
551 dnl Try with -target option alone. (Sun javac 1.3.1 has the -target
552 dnl option but no -source option.)
554 if { echo "$as_me:__oline__: javac -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
555 javac -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
557 && test -f conftest.class \
558 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
559 dnl Try adding -source option if it is useful.
561 rm -f conftestfail.class
562 if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
563 javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
565 && test -f conftest.class \
566 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
567 && { echo "$as_me:__oline__: javac -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
568 javac -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
570 && test -f conftestfail.class \
571 && ! { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
572 javac -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
574 CONF_JAVAC="javac -target $target_version -source $source_version"
578 CONF_JAVAC="javac -target $target_version"
583 dnl Maybe this -target option requires a -source option? Try with
584 dnl -target and -source options. (Supported by Sun javac 1.4 and
587 if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
588 javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
590 && test -f conftest.class \
591 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
592 CONF_JAVAC="javac -target $target_version -source $source_version"
600 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JIKES_IN_PATH"; then
601 dnl Test whether jikes is usable.
602 if { jikes >/dev/null 2>/dev/null || test $? = 1; } \
604 # See if the existing CLASSPATH is sufficient to make jikes work.
606 jikes conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1
608 rm -f conftestlib.class
612 dnl Now test whether it supports the desired target-version and
614 if test "$source_version" = 1.3; then
622 rm -f conftest*.java conftest*.class
623 if test -n "$HAVE_JAVACOMP"; then
624 ac_result="$CONF_JAVAC"
628 AC_MSG_RESULT([$ac_result])
629 AC_SUBST([CONF_JAVAC])
630 AC_SUBST([CLASSPATH])
631 AC_SUBST([CLASSPATH_SEPARATOR])
632 AC_SUBST([HAVE_JAVAC_ENVVAR])
633 AC_SUBST([HAVE_GCJ_C])
634 AC_SUBST([HAVE_JAVAC])
635 AC_SUBST([HAVE_JIKES])