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# SYNOPSIS
#
# AX_CHECK_LIBTIFF(required_version, lib_dir)
#
# DESCRIPTION
#
# Check whether the system has libtiff version required_version.
#
# LAST MODIFICATION
#
# 2007-11-08
#
# COPYLEFT
#
# Copyright (c) 2006 Nicolas Calimet
#
# Copying and distribution of this file, with or without
# modification, are permitted in any medium without royalty provided
# the copyright notice and this notice are preserved.
AC_DEFUN([AX_CHECK_LIBTIFF],
[
PKG_CHECK_MODULES([LIBTIFF],[libtiff-4 >= $1],[
CPPFLAGS="$LIBTIFF_CFLAGS $CPPFLAGS"
LIBS="$LIBTIFF_LIBS $LIBS"
ax_check_libtiff=ok
],[
ax_check_libtiff_save_cppflags="$CPPFLAGS"
ax_check_libtiff_save_ldflags="$LDFLAGS"
if test x"$2" != x""; then
CPPFLAGS="-I$2/../include $CPPFLAGS"
LDFLAGS="-L$2 $LDFLAGS"
fi
# check the library
AC_SEARCH_LIBS(
[TIFFGetVersion],
[tiff],
[
# check include file
AC_CHECK_HEADER(
[tiffio.h],
[
# check library version, update LIBS
AC_MSG_CHECKING([for libtiff version >= $1])
AC_RUN_IFELSE(
[
AC_LANG_SOURCE(
[#include <stdio.h>
#include <string.h>
#include "tiffio.h"
int main (void)
{
char version[[81]];
char *p, *c;
sprintf (version, "%.79s", TIFFGetVersion ());
p = strstr (version, "Version ") + strlen ("Version ");
if (! p)
return 1;
c = strchr (p, '\n');
if (! c)
return 1;
*c = '\0';
fprintf (stderr, "%s\n", p);
return 0;
}]
)
],
[
ax_check_libtiff_version=`eval $ac_try 2>&1`
AX_COMPARE_VERSION([$ax_check_libtiff_version], [ge], [$1], [ax_check_libtiff="ok"], [ax_check_libtiff="bad"])
AC_MSG_RESULT([$ax_check_libtiff_version, $ax_check_libtiff])
],
[
ax_check_libtiff="unknown"
AC_MSG_RESULT([$ax_check_libtiff])
],
[AC_MSG_RESULT([cross-compiling, forced])]
) # AC_RUN_IFELSE
],
[ax_check_libtiff="no headers"]
) # AC_CHECK_HEADER
],
[ax_check_libtiff="not found"],
[]
) # AC_SEARCH_LIBS
if test x"$ax_check_libtiff" != x"ok"; then
CPPFLAGS="$ax_check_libtiff_save_cppflags"
LDFLAGS="$ax_check_libtiff_save_ldflags"
fi
])
])
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