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Diffstat (limited to 'm4/dps_java_check_class.m4')
| -rw-r--r-- | m4/dps_java_check_class.m4 | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/m4/dps_java_check_class.m4 b/m4/dps_java_check_class.m4 new file mode 100644 index 00000000..a86d6416 --- /dev/null +++ b/m4/dps_java_check_class.m4 @@ -0,0 +1,89 @@ +##### http://autoconf-archive.cryp.to/dps_java_check_class.html +# +# SYNOPSIS +# +# DPS_JAVA_CHECK_CLASS(<class>,<action-if-found>,<action-if-not-found>) +# +# DESCRIPTION +# +# Test if a Java class is available. Based on AC_PROG_JAVAC_WORKS. +# This version uses a cache variable which is both compiler, options +# and classpath dependent (so if you switch from javac to gcj it +# correctly notices and redoes the test). +# +# The macro tries to compile a minimal program importing <class>. +# Some newer compilers moan about the failure to use this but fail or +# produce a class file anyway. All moaing is sunk to /dev/null since +# I only wanted to know if the class could be imported. This is a +# recommended followup to DPS_CHECK_JAVA_PLUGIN with classpath +# appropriately adjusted. +# +# LAST MODIFICATION +# +# 2008-01-28 +# +# COPYLEFT +# +# Copyright (c) 2008 Duncan Simpson <dps@simpson.demon.co.uk> +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of the +# License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA +# 02111-1307, USA. +# +# As a special exception, the respective Autoconf Macro's copyright +# owner gives unlimited permission to copy, distribute and modify the +# configure scripts that are the output of Autoconf when processing +# the Macro. You need not follow the terms of the GNU General Public +# License when using or distributing such scripts, even though +# portions of the text of the Macro appear in them. The GNU General +# Public License (GPL) does govern all other use of the material that +# constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the +# Autoconf Macro released by the Autoconf Macro Archive. When you +# make and distribute a modified version of the Autoconf Macro, you +# may extend this special exception to the GPL to apply to your +# modified version as well. + +AC_DEFUN([DPS_JAVA_CHECK_CLASS],[ +m4_define([cache_val],[m4_translit(dps_cv_have_java_class_$1, " ." ,"__")]) +if test "x$CLASSPATH" != "x"; then +xtra=" with classpath ${CLASSPATH}" +xopts=`echo ${CLASSPATH} | ${SED} 's/^ *://'` +xopts="-classpath $xopts" +else xtra=""; xopts=""; fi +cache_var="cache_val"AS_TR_SH([_Jc_${JAVAC}_Cp_${CLASSPATH}]) +AC_CACHE_CHECK([if the $1 class is available$xtra], [$cache_var], [ +JAVA_TEST=Testing.java +CLASS_TEST=Testing.class +cat << \EOF > $JAVA_TEST +/* [#]xline __oline__ "configure" */ +import $1; +public class Testing { +} +EOF +if AC_TRY_COMMAND($JAVAC $JAVACFLAGS $xopts $JAVA_TEST) >/dev/null 2>&1; then + eval "${cache_var}=yes" +else + eval "${cache_var}=no" + echo "configure: failed program was:" >&AC_FD_CC + cat $JAVA_TEST >&AC_FD_CC +fi +rm -f $JAVA_TEST $CLASS_TEST +]) +if eval 'test "x$'${cache_var}'" = "xyes"'; then +$2 +true; else +$3 +false; fi]) |