Fix: unchecked return value in trace_clock_read64_monotonic
[lttng-tools.git] / m4 / ax_prog_javah.m4
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1# ===========================================================================
2# http://www.gnu.org/software/autoconf-archive/ax_prog_javah.html
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
24#serial 7
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 "$ac_cv_path_JAVAH"],
32 [
33 AC_TRY_CPP([#include <jni.h>],,[
34 ac_save_CPPFLAGS="$CPPFLAGS"
35 ax_prog_javah_bin_dir=`AS_DIRNAME([$ac_cv_path_JAVAH])`
36 ac_dir="`AS_DIRNAME([$ax_prog_javah_bin])`/include"
37 AS_CASE([$build_os],
38 [cygwin*],
39 [ac_machdep=win32],
40 [ac_machdep=`AS_ECHO($build_os) | sed 's,[[-0-9]].*,,'`])
41 CPPFLAGS="$ac_save_CPPFLAGS -I$ac_dir -I$ac_dir/$ac_machdep"
42 AC_TRY_CPP([#include <jni.h>],
43 ac_save_CPPFLAGS="$CPPFLAGS",
44 AC_MSG_WARN([unable to include <jni.h>]))
45 CPPFLAGS="$ac_save_CPPFLAGS"])
46 ])
47])
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