configure.ac: move warning to end of output for the end user
[lttng-tools.git] / m4 / ax_prog_java_works.m4
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
52 AU_ALIAS([AC_PROG_JAVA_WORKS], [AX_PROG_JAVA_WORKS])
53 AC_DEFUN([AX_PROG_JAVA_WORKS], [
54 AC_PATH_PROG(UUDECODE, uudecode, [no])
55 if test x$UUDECODE != xno; then
56 AC_CACHE_CHECK([if uudecode can decode base 64 file], ac_cv_prog_uudecode_base64, [
57 dnl /**
58 dnl * Test.java: used to test if java compiler works.
59 dnl */
60 dnl public class Test
61 dnl {
62 dnl
63 dnl public static void
64 dnl main( String[] argv )
65 dnl {
66 dnl System.exit (0);
67 dnl }
68 dnl
69 dnl }
70 cat << \EOF > Test.uue
71 begin-base64 644 Test.class
72 yv66vgADAC0AFQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE
73 bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51
74 bWJlclRhYmxlDAAKAAsBAARleGl0AQAEKEkpVgoADQAJBwAOAQAQamF2YS9s
75 YW5nL1N5c3RlbQEABjxpbml0PgEAAygpVgwADwAQCgADABEBAApTb3VyY2VG
76 aWxlAQAJVGVzdC5qYXZhACEAAQADAAAAAAACAAkABQAGAAEABwAAACEAAQAB
77 AAAABQO4AAyxAAAAAQAIAAAACgACAAAACgAEAAsAAQAPABAAAQAHAAAAIQAB
78 AAEAAAAFKrcAErEAAAABAAgAAAAKAAIAAAAEAAQABAABABMAAAACABQ=
79 ====
80 EOF
81 if $UUDECODE Test.uue; then
82 ac_cv_prog_uudecode_base64=yes
83 else
84 echo "configure: __oline__: uudecode had trouble decoding base 64 file 'Test.uue'" >&AS_MESSAGE_LOG_FD
85 echo "configure: failed file was:" >&AS_MESSAGE_LOG_FD
86 cat Test.uue >&AS_MESSAGE_LOG_FD
87 ac_cv_prog_uudecode_base64=no
88 fi
89 rm -f Test.uue])
90 fi
91 if test x$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
100 fi
101 AC_CACHE_CHECK(if $JAVA works, ac_cv_prog_java_works, [
102 JAVA_TEST=Test.java
103 CLASS_TEST=Test.class
104 TEST=Test
105 changequote(, )dnl
106 cat << \EOF > $JAVA_TEST
107 /* [#]line __oline__ "configure" */
108 public class Test {
109 public static void main (String args[]) {
110 System.exit (0);
111 } }
112 EOF
113 changequote([, ])dnl
114 if test x$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 $JAVAC failed (see config.log, check the CLASSPATH?))
121 fi
122 fi
123 if AC_TRY_COMMAND($JAVA -classpath . $JAVAFLAGS $TEST) >/dev/null 2>&1; then
124 ac_cv_prog_java_works=yes
125 else
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?))
129 fi
130 rm -fr $JAVA_TEST $CLASS_TEST Test.uue
131 ])
132 AC_PROVIDE([$0])dnl
133 ]
134 )
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