configure.ac: move warning to end of output for the end user
[lttng-tools.git] / m4 / ax_prog_java_works.m4
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1# ===========================================================================
2# http://www.gnu.org/software/autoconf-archive/ax_prog_java_works.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7# AX_PROG_JAVA_WORKS
8#
9# DESCRIPTION
10#
11# Internal use ONLY.
12#
13# Note: This is part of the set of autoconf M4 macros for Java programs.
14# It is VERY IMPORTANT that you download the whole set, some macros depend
15# on other. Unfortunately, the autoconf archive does not support the
16# concept of set of macros, so I had to break it for submission. The
17# general documentation, as well as the sample configure.in, is included
18# in the AX_PROG_JAVA macro.
19#
20# LICENSE
21#
22# Copyright (c) 2008 Stephane Bortzmeyer <bortzmeyer@pasteur.fr>
23#
24# This program is free software; you can redistribute it and/or modify it
25# under the terms of the GNU General Public License as published by the
26# Free Software Foundation; either version 2 of the License, or (at your
27# option) any later version.
28#
29# This program is distributed in the hope that it will be useful, but
30# WITHOUT ANY WARRANTY; without even the implied warranty of
31# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
32# Public License for more details.
33#
34# You should have received a copy of the GNU General Public License along
35# with this program. If not, see <http://www.gnu.org/licenses/>.
36#
37# As a special exception, the respective Autoconf Macro's copyright owner
38# gives unlimited permission to copy, distribute and modify the configure
39# scripts that are the output of Autoconf when processing the Macro. You
40# need not follow the terms of the GNU General Public License when using
41# or distributing such scripts, even though portions of the text of the
42# Macro appear in them. The GNU General Public License (GPL) does govern
43# all other use of the material that constitutes the Autoconf Macro.
44#
45# This special exception to the GPL applies to versions of the Autoconf
46# Macro released by the Autoconf Archive. When you make and distribute a
47# modified version of the Autoconf Macro, you may extend this special
48# exception to the GPL to apply to your modified version as well.
49
50#serial 9
51
52AU_ALIAS([AC_PROG_JAVA_WORKS], [AX_PROG_JAVA_WORKS])
53AC_DEFUN([AX_PROG_JAVA_WORKS], [
54AC_PATH_PROG(UUDECODE, uudecode, [no])
55if test x$UUDECODE != xno; then
56AC_CACHE_CHECK([if uudecode can decode base 64 file], ac_cv_prog_uudecode_base64, [
57dnl /**
58dnl * Test.java: used to test if java compiler works.
59dnl */
60dnl public class Test
61dnl {
62dnl
63dnl public static void
64dnl main( String[] argv )
65dnl {
66dnl System.exit (0);
67dnl }
68dnl
69dnl }
70cat << \EOF > Test.uue
71begin-base64 644 Test.class
72yv66vgADAC0AFQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE
73bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51
74bWJlclRhYmxlDAAKAAsBAARleGl0AQAEKEkpVgoADQAJBwAOAQAQamF2YS9s
75YW5nL1N5c3RlbQEABjxpbml0PgEAAygpVgwADwAQCgADABEBAApTb3VyY2VG
76aWxlAQAJVGVzdC5qYXZhACEAAQADAAAAAAACAAkABQAGAAEABwAAACEAAQAB
77AAAABQO4AAyxAAAAAQAIAAAACgACAAAACgAEAAsAAQAPABAAAQAHAAAAIQAB
78AAEAAAAFKrcAErEAAAABAAgAAAAKAAIAAAAEAAQABAABABMAAAACABQ=
79====
80EOF
81if $UUDECODE Test.uue; then
82 ac_cv_prog_uudecode_base64=yes
83else
84 echo "configure: __oline__: uudecode had trouble decoding base 64 file 'Test.uue'" >&AS_MESSAGE_LOG_FD
85 echo "configure: failed file was:" >&AS_MESSAGE_LOG_FD
86 cat Test.uue >&AS_MESSAGE_LOG_FD
87 ac_cv_prog_uudecode_base64=no
88fi
89rm -f Test.uue])
90fi
91if test x$ac_cv_prog_uudecode_base64 != xyes; then
92 rm -f Test.class
93 AC_MSG_WARN([I have to compile Test.class from scratch])
94 if test x$ac_cv_prog_javac_works = xno; then
95 AC_MSG_ERROR([Cannot compile java source. $JAVAC does not work properly])
96 fi
97 if test x$ac_cv_prog_javac_works = x; then
98 AX_PROG_JAVAC
99 fi
100fi
101AC_CACHE_CHECK(if $JAVA works, ac_cv_prog_java_works, [
102JAVA_TEST=Test.java
103CLASS_TEST=Test.class
104TEST=Test
105changequote(, )dnl
106cat << \EOF > $JAVA_TEST
107/* [#]line __oline__ "configure" */
108public class Test {
109public static void main (String args[]) {
110 System.exit (0);
111} }
112EOF
113changequote([, ])dnl
114if test x$ac_cv_prog_uudecode_base64 != xyes; then
115 if AC_TRY_COMMAND($JAVAC $JAVACFLAGS $JAVA_TEST) && test -s $CLASS_TEST; then
116 :
117 else
118 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
119 cat $JAVA_TEST >&AS_MESSAGE_LOG_FD
120 AC_MSG_ERROR(The Java compiler $JAVAC failed (see config.log, check the CLASSPATH?))
121 fi
122fi
123if AC_TRY_COMMAND($JAVA -classpath . $JAVAFLAGS $TEST) >/dev/null 2>&1; then
124 ac_cv_prog_java_works=yes
125else
126 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
127 cat $JAVA_TEST >&AS_MESSAGE_LOG_FD
128 AC_MSG_ERROR(The Java VM $JAVA failed (see config.log, check the CLASSPATH?))
129fi
130rm -fr $JAVA_TEST $CLASS_TEST Test.uue
131])
132AC_PROVIDE([$0])dnl
133]
134)
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