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Unified Diff: bison/src/bison/2.4.1/bison-2.4.1-src/m4/javacomp.m4

Issue 10807020: Add native Windows binary for bison. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 8 years, 5 months ago
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Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/javacomp.m4
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/javacomp.m4 (revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/javacomp.m4 (revision 0)
@@ -0,0 +1,636 @@
+# javacomp.m4 serial 10
+dnl Copyright (C) 2001-2003, 2006-2007 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Prerequisites of javacomp.sh.
+# gt_JAVACOMP([source-version], [target-version])
+# Sets HAVE_JAVACOMP to nonempty if javacomp.sh will allow Java source code
+# according to source-version to be compiled to Java bytecode classes in the
+# target-version format.
+#
+# source-version can be: support for
+# 1.3 inner classes
+# 1.4 assert keyword
+# 1.5 generic classes and methods
+# 1.6 (not yet supported)
+#
+# target-version can be: classfile version:
+# 1.1 45.3
+# 1.2 46.0
+# 1.3 47.0
+# 1.4 48.0
+# 1.5 49.0
+# 1.6 50.0
+# The classfile version of a .class file can be determined through the "file"
+# command. More portably, the classfile major version can be determined through
+# "od -A n -t d1 -j 7 -N 1 classfile".
+# target-version can also be omitted. In this case, the required target-version
+# is determined from the found JVM (see macro gt_JAVAEXEC):
+# target-version for JVM
+# 1.1 JDK 1.1, jview
+# 1.2 JDK/JRE 1.2
+# 1.3 JDK/JRE 1.3, gij 3.3, 3.4
+# 1.4 JDK/JRE 1.4, gij 4.0, 4.1
+# 1.5 JDK/JRE 1.5
+# 1.6 JDK/JRE 1.6
+# Note: gij >= 3.3 can in some cases handle classes compiled with -target 1.4,
+# and gij >= 4.1 can in some cases partially handle classes compiled with
+# -target 1.5, but I have no idea how complete this support is.
+#
+# Specifying target-version is useful when building a library (.jar) that is
+# useful outside the given package. Omitting target-version is useful when
+# building an application.
+#
+# It is unreasonable to ask for:
+# - target-version < 1.4 with source-version >= 1.4, or
+# - target-version < 1.5 with source-version >= 1.5, or
+# - target-version < 1.6 with source-version >= 1.6,
+# because even Sun's javac doesn't support these combinations.
+#
+# It is redundant to ask for a target-version > source-version, since the
+# smaller target-version = source-version will also always work and newer JVMs
+# support the older target-versions too. Except for the case
+# target-version = 1.4, source-version = 1.3, which allows gcj versions 3.0
+# to 3.2 to be used.
+
+AC_DEFUN([gt_JAVACOMP],
+[
+ ifelse([$2], [], [AC_REQUIRE([gt_JAVAEXEC])], [])
+ AC_EGREP_CPP(yes, [
+#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+ yes
+#endif
+], CLASSPATH_SEPARATOR=';', CLASSPATH_SEPARATOR=':')
+ source_version=$1
+ test -n "$source_version" || {
+ AC_MSG_ERROR([missing source-version argument to gt_@&t@JAVACOMP])
+ }
+ ifelse([$2], [],
+ [if test -n "$HAVE_JAVAEXEC"; then
+ dnl Use $CONF_JAVA to determine the JVM's version.
+changequote(,)dnl
+ cat > conftestver.java <<EOF
+public class conftestver {
+ public static void main (String[] args) {
+ System.out.println(System.getProperty("java.specification.version"));
+ }
+}
+EOF
+changequote([,])dnl
+ dnl A precompiled version of conftestver.java, compiled with
+ dnl "javac -target 1.1". This avoids having to compile conftestver.java
+ dnl during each test for a suitable Java compiler.
+ dnl For the conversion from binary to this ASCII encapsulation, avoiding
+ dnl to assume the presence of uudecode, use the command
+ dnl $ od -A n -t o1 < conftestver.class | tr ' ' '\012'| sort | uniq | sed -e '/^$/d' -e 's,^,\\,' | tr -d '\012'
+ dnl and the long tr command in opposite direction.
+ dnl Finally move the position corresponding to \055 to the last position,
+ dnl to work around a coreutils-5.x bug.
+ echo 'xyvw!$!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' \
+ | tr -d '\012\015' \
+ | tr '!"#$%&()*+,-./0123456789:;<=>?@ABCDEFGIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyzH' '\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\046\050\051\052\056\057\073\074\076\103\106\114\116\117\120\123\124\126\133\141\142\143\144\145\146\147\151\152\154\155\156\157\160\162\163\164\165\166\171\261\262\266\267\270\272\276\312\376\055' \
+ > conftestver.class
+ target_version=`{
+ unset JAVA_HOME
+ echo "$as_me:__oline__: CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver" >&AS_MESSAGE_LOG_FD
+ CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver 2>&AS_MESSAGE_LOG_FD
+ }`
+ case "$target_version" in
+ 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6) ;;
+ null)
+ dnl JDK 1.1.X returns null.
+ target_version=1.1 ;;
+ *) AC_MSG_WARN([unknown target-version $target_version, please update gt_@&t@JAVACOMP macro])
+ target_version=1.1 ;;
+ esac
+ else
+ target_version="1.1"
+ fi
+ ],
+ [target_version=$2])
+ case "$source_version" in
+ 1.3) goodcode='class conftest {}'
+ failcode='class conftestfail { static { assert(true); } }' ;;
+ 1.4) goodcode='class conftest { static { assert(true); } }'
+ failcode='class conftestfail<T> { T foo() { return null; } }' ;;
+ 1.5) goodcode='class conftest<T> { T foo() { return null; } }'
+ failcode='class conftestfail syntax error' ;;
+ *) AC_MSG_ERROR([invalid source-version argument to gt_@&t@JAVACOMP: $source_version]) ;;
+ esac
+ case "$target_version" in
+ 1.1) cfversion=45 ;;
+ 1.2) cfversion=46 ;;
+ 1.3) cfversion=47 ;;
+ 1.4) cfversion=48 ;;
+ 1.5) cfversion=49 ;;
+ 1.6) cfversion=50 ;;
+ *) AC_MSG_ERROR([invalid target-version argument to gt_@&t@JAVACOMP: $target_version]) ;;
+ esac
+ # Function to output the classfile version of a file (8th byte) in decimal.
+ if od -A x < /dev/null >/dev/null 2>/dev/null; then
+ # Use POSIX od.
+ func_classfile_version ()
+ {
+ od -A n -t d1 -j 7 -N 1 "[$]1"
+ }
+ else
+ # Use BSD hexdump.
+ func_classfile_version ()
+ {
+ dd if="[$]1" bs=1 count=1 skip=7 2>/dev/null | hexdump -e '1/1 "%3d "'
+ echo
+ }
+ fi
+ AC_MSG_CHECKING([for Java compiler])
+ dnl
+ dnl The support of GNU gcj for target-version and source-version:
+ dnl
+ dnl gcj 3.0.4 to 4.2 does not have a way to specify the target-version.
+ dnl It always assumes target-version=1.4 but labels the class files as 1.1.
+ dnl One consequence of this is that gcj compiles GetURL.java to invalid
+ dnl bytecode, which crashes with a VerifyError when executed by Sun Java
+ dnl 1.3.1. The bug is registered as java/7066, see
+ dnl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7066
+ dnl gcj 4.3 and newer has an option -ftarget=1.X.
+ dnl
+ dnl For gcj < 3.3, the source-version always is 1.3.
+ dnl For 3.3 <= gcj < 4.3, the source-version defaults to 1.4; option
+ dnl "-fno-assert" switches to source-version 1.3.
+ dnl gcj >= 4.3 has an option -fsource=1.X.
+ dnl
+ dnl The support of Sun javac for target-version and source-version:
+ dnl
+ dnl javac 1.3: -target 1.1 1.2 1.3 default: 1.1
+ dnl source always: 1.3
+ dnl
+ dnl javac 1.4: -target 1.1 1.2 1.3 1.4 default: 1.2
+ dnl -source 1.3 1.4 default: 1.3
+ dnl -target 1.1/1.2/1.3 only possible with -source 1.3 or no -source
+ dnl
+ dnl javac 1.5: -target 1.1 1.2 1.3 1.4 1.5 default: 1.5
+ dnl -source 1.3 1.4 1.5 default: 1.5
+ dnl -target 1.1/1.2/1.3 only possible with -source 1.3
+ dnl -target 1.4 only possible with -source 1.3/1.4
+ dnl
+ dnl javac 1.6: -target 1.1 1.2 1.3 1.4 1.5 1.6 default: 1.6
+ dnl -source 1.3 1.4 1.5 1.6 default: 1.5
+ dnl -target 1.1/1.2/1.3 only possible with -source 1.3
+ dnl -target 1.4 only possible with -source 1.3/1.4
+ dnl -target 1.5 only possible with -source 1.3/1.4/1.5 or no -source
+ dnl
+ dnl The support of jikes for target-version and source-version:
+ dnl
+ dnl jikes 1.14 does not have a way to specify the target-version. It
+ dnl always assumes target-version=1.1.
+ dnl
+ dnl For jikes 1.14, the source-version always is 1.3.
+ dnl
+ CONF_JAVAC=
+ HAVE_JAVAC_ENVVAR=
+ HAVE_GCJ_C=
+ HAVE_JAVAC=
+ HAVE_JIKES=
+ HAVE_JAVACOMP=
+changequote(,)dnl
+ cat > conftestlib.java <<EOF
+public class conftestlib {
+ public static void main (String[] args) {
+ }
+}
+EOF
+changequote([,])dnl
+ echo "$goodcode" > conftest.java
+ echo "$failcode" > conftestfail.java
+ dnl If the user has set the JAVAC environment variable, use that, if it
+ dnl satisfies the constraints (possibly after adding -target and -source
+ dnl options).
+ if test -n "$JAVAC"; then
+ dnl Try the original $JAVAC.
+ if $JAVAC --version 2>/dev/null | sed -e 1q | grep gcj > /dev/null; then
+ dnl It's a version of gcj.
+changequote(,)dnl
+ if $JAVAC --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then
+changequote([,])dnl
+ dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct.
+ dnl Try $JAVAC.
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -fsource option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="$JAVAC -fsource=$source_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="$JAVAC"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Try with -fsource and -ftarget options.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ CONF_JAVAC="$JAVAC -fsource=$source_version -ftarget=$target_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ else
+ dnl It's a version of gcj < 4.3. Ignore the version of conftest.class.
+ if test "$target_version" = 1.4 && test "$source_version" = 1.4; then
+ dnl Try $JAVAC.
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ CONF_JAVAC="$JAVAC"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ if test "$target_version" = 1.4 && test "$source_version" = 1.3; then
+ dnl Try $JAVAC and "$JAVAC -fno-assert". But add -fno-assert only if
+ dnl it makes a difference. (It could already be part of $JAVAC.)
+ javac_works=
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ javac_works=1
+ fi
+ javac_noassert_works=
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ javac_noassert_works=1
+ fi
+ if test -n "$javac_works" && test -n "$javac_noassert_works"; then
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -fno-assert -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ dnl "$JAVAC -fno-assert" works better than $JAVAC.
+ javac_works=
+ fi
+ fi
+ if test -n "$javac_works"; then
+ CONF_JAVAC="$JAVAC"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ else
+ if test -n "$javac_noassert_works"; then
+ CONF_JAVAC="$JAVAC -fno-assert"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ fi
+ fi
+ fi
+ else
+ dnl It's not gcj. Assume the classfile versions are correct.
+ dnl Try $JAVAC.
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -source option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="$JAVAC -source $source_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="$JAVAC"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Try with -target option alone. (Sun javac 1.3.1 has the -target
+ dnl option but no -source option.)
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -source option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="$JAVAC -target $target_version -source $source_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="$JAVAC -target $target_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Maybe this -target option requires a -source option? Try with
+ dnl -target and -source options. (Supported by Sun javac 1.4 and
+ dnl higher.)
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ CONF_JAVAC="$JAVAC -target $target_version -source $source_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -z "$HAVE_JAVACOMP"; then
+ pushdef([AC_MSG_CHECKING],[:])dnl
+ pushdef([AC_CHECKING],[:])dnl
+ pushdef([AC_MSG_RESULT],[:])dnl
+ AC_CHECK_PROG(HAVE_GCJ_IN_PATH, gcj, yes)
+ AC_CHECK_PROG(HAVE_JAVAC_IN_PATH, javac, yes)
+ AC_CHECK_PROG(HAVE_JIKES_IN_PATH, jikes, yes)
+ popdef([AC_MSG_RESULT])dnl
+ popdef([AC_CHECKING])dnl
+ popdef([AC_MSG_CHECKING])dnl
+ if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_GCJ_IN_PATH"; then
+ dnl Test for a good gcj version (>= 3.0).
+changequote(,)dnl
+ if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^3\.[01]/d' | grep '^[3-9]' >/dev/null; then
+changequote([,])dnl
+ dnl See if libgcj.jar is well installed.
+ if { echo "$as_me:__oline__: gcj -C -d . conftestlib.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -d . conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ dnl OK, gcj works.
+changequote(,)dnl
+ if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then
+changequote([,])dnl
+ dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct.
+ dnl Try gcj.
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -fsource option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: gcj -C -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="gcj -C -fsource=$source_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="gcj -C"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Try with -fsource and -ftarget options.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ CONF_JAVAC="gcj -C -fsource=$source_version -ftarget=$target_version"
+ HAVE_JAVAC_ENVVAR=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ else
+ dnl It's a version of gcj < 4.3. Ignore the version of conftest.class.
+ dnl Now test whether it supports the desired target-version and
+ dnl source-version.
+ if test "$target_version" = 1.4 && test "$source_version" = 1.4; then
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ CONF_JAVAC="gcj -C"
+ HAVE_GCJ_C=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ if test "$target_version" = 1.4 && test "$source_version" = 1.3; then
+ dnl Try gcj and "gcj -fno-assert". But add -fno-assert only if
+ dnl it works (not gcj < 3.3).
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: gcj -C -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ CONF_JAVAC="gcj -C -fno-assert"
+ HAVE_GCJ_C=1
+ HAVE_JAVACOMP=1
+ else
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class; then
+ CONF_JAVAC="gcj -C"
+ HAVE_GCJ_C=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ fi
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JAVAC_IN_PATH"; then
+ dnl Test whether javac is usable.
+ if { javac -version >/dev/null 2>/dev/null || test $? -le 2; } \
+ && ( if javac -help 2>&1 >/dev/null | grep at.dms.kjc.Main >/dev/null && javac -help 2>/dev/null | grep 'released.*2000' >/dev/null ; then exit 1; else exit 0; fi ); then
+ dnl OK, javac works.
+ dnl Now test whether it supports the desired target-version and
+ dnl source-version.
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: javac -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ javac -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -source option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: javac -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ javac -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: javac -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ javac -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: javac -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ javac -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="javac -source $source_version"
+ HAVE_JAVAC=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="javac"
+ HAVE_JAVAC=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Try with -target option alone. (Sun javac 1.3.1 has the -target
+ dnl option but no -source option.)
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: javac -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ javac -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ dnl Try adding -source option if it is useful.
+ rm -f conftest.class
+ rm -f conftestfail.class
+ if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && { echo "$as_me:__oline__: javac -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ javac -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftestfail.class \
+ && ! { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD
+ javac -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1
+ }; then
+ CONF_JAVAC="javac -target $target_version -source $source_version"
+ HAVE_JAVAC=1
+ HAVE_JAVACOMP=1
+ else
+ CONF_JAVAC="javac -target $target_version"
+ HAVE_JAVAC=1
+ HAVE_JAVACOMP=1
+ fi
+ else
+ dnl Maybe this -target option requires a -source option? Try with
+ dnl -target and -source options. (Supported by Sun javac 1.4 and
+ dnl higher.)
+ rm -f conftest.class
+ if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD
+ javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1
+ } \
+ && test -f conftest.class \
+ && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ CONF_JAVAC="javac -target $target_version -source $source_version"
+ HAVE_JAVAC=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JIKES_IN_PATH"; then
+ dnl Test whether jikes is usable.
+ if { jikes >/dev/null 2>/dev/null || test $? = 1; } \
+ && (
+ # See if the existing CLASSPATH is sufficient to make jikes work.
+ unset JAVA_HOME
+ jikes conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1
+ error=$?
+ rm -f conftestlib.class
+ exit $error
+ ); then
+ dnl OK, jikes works.
+ dnl Now test whether it supports the desired target-version and
+ dnl source-version.
+ if test "$source_version" = 1.3; then
+ CONF_JAVAC="jikes"
+ HAVE_JIKES=1
+ HAVE_JAVACOMP=1
+ fi
+ fi
+ fi
+ fi
+ rm -f conftest*.java conftest*.class
+ if test -n "$HAVE_JAVACOMP"; then
+ ac_result="$CONF_JAVAC"
+ else
+ ac_result="no"
+ fi
+ AC_MSG_RESULT([$ac_result])
+ AC_SUBST(CONF_JAVAC)
+ AC_SUBST(CLASSPATH)
+ AC_SUBST(CLASSPATH_SEPARATOR)
+ AC_SUBST(HAVE_JAVAC_ENVVAR)
+ AC_SUBST(HAVE_GCJ_C)
+ AC_SUBST(HAVE_JAVAC)
+ AC_SUBST(HAVE_JIKES)
+])
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