Fix: libcompat is now part of libcommon
[lttng-tools.git] / m4 / ax_prog_javah.m4
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504d4ace 1# ===========================================================================
6333b87b 2# https://www.gnu.org/software/autoconf-archive/ax_prog_javah.html
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3# ===========================================================================
4#
5# SYNOPSIS
6#
7# AX_PROG_JAVAH
8#
9# DESCRIPTION
10#
11# AX_PROG_JAVAH tests the availability of the javah header generator and
12# looks for the jni.h header file. If available, JAVAH is set to the full
13# path of javah and CPPFLAGS is updated accordingly.
14#
15# LICENSE
16#
17# Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
18#
19# Copying and distribution of this file, with or without modification, are
20# permitted in any medium without royalty provided the copyright notice
21# and this notice are preserved. This file is offered as-is, without any
22# warranty.
23
6333b87b 24#serial 11
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25
26AU_ALIAS([AC_PROG_JAVAH], [AX_PROG_JAVAH])
27AC_DEFUN([AX_PROG_JAVAH],[
28AC_REQUIRE([AC_CANONICAL_BUILD])dnl
29AC_REQUIRE([AC_PROG_CPP])dnl
30AC_PATH_PROG(JAVAH,javah)
31AS_IF([test -n "$ac_cv_path_JAVAH"],
32 [
6333b87b 33 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <jni.h>]])],[],[
504d4ace 34 ac_save_CPPFLAGS="$CPPFLAGS"
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35 _ACJAVAH_FOLLOW_SYMLINKS("$ac_cv_path_JAVAH")
36 ax_prog_javah_bin_dir=`AS_DIRNAME([$_ACJAVAH_FOLLOWED])`
37 ac_dir="`AS_DIRNAME([$ax_prog_javah_bin_dir])`/include"
504d4ace 38 AS_CASE([$build_os],
6333b87b 39 [cygwin*|mingw*],
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40 [ac_machdep=win32],
41 [ac_machdep=`AS_ECHO($build_os) | sed 's,[[-0-9]].*,,'`])
42 CPPFLAGS="$ac_save_CPPFLAGS -I$ac_dir -I$ac_dir/$ac_machdep"
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43 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <jni.h>]])],
44 [ac_save_CPPFLAGS="$CPPFLAGS"],
45 [AC_MSG_WARN([unable to include <jni.h>])])
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46 CPPFLAGS="$ac_save_CPPFLAGS"])
47 ])
48])
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49
50AC_DEFUN([_ACJAVAH_FOLLOW_SYMLINKS],[
51# find the include directory relative to the javac executable
52_cur="$1"
53while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
54 AC_MSG_CHECKING([symlink for $_cur])
55 _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
56 case "$_slink" in
57 /*) _cur="$_slink";;
58 # 'X' avoids triggering unwanted echo options.
59 *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
60 esac
61 AC_MSG_RESULT([$_cur])
62done
63_ACJAVAH_FOLLOWED="$_cur"
64])
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