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# npth.m4 - autoconf macro to detect NPTH.
# Copyright (C) 2002, 2003, 2004, 2011 g10 Code GmbH
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
AC_DEFUN([_AM_PATH_NPTH_CONFIG],
[ AC_ARG_WITH(npth-prefix,
AC_HELP_STRING([--with-npth-prefix=PFX],
[prefix where NPTH is installed (optional)]),
npth_config_prefix="$withval", npth_config_prefix="")
if test "x$npth_config_prefix" != x ; then
NPTH_CONFIG="$npth_config_prefix/bin/npth-config"
fi
AC_PATH_PROG(NPTH_CONFIG, npth-config, no)
if test "$NPTH_CONFIG" != "no" ; then
npth_version=`$NPTH_CONFIG --version`
fi
npth_version_major=`echo $npth_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
npth_version_minor=`echo $npth_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
])
dnl AM_PATH_NPTH([MINIMUM-VERSION,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
dnl Test for libnpth and define NPTH_CFLAGS and NPTH_LIBS.
dnl
AC_DEFUN([AM_PATH_NPTH],
[ AC_REQUIRE([_AM_PATH_NPTH_CONFIG])dnl
tmp=ifelse([$1], ,1:0.91,$1)
if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
req_npth_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
min_npth_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
else
req_npth_api=1
min_npth_version="$tmp"
fi
AC_MSG_CHECKING(for NPTH - version >= $min_npth_version)
ok=no
if test "$NPTH_CONFIG" != "no" ; then
req_major=`echo $min_npth_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
req_minor=`echo $min_npth_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
if test "$npth_version_major" -gt "$req_major"; then
ok=yes
else
if test "$npth_version_major" -eq "$req_major"; then
if test "$npth_version_minor" -gt "$req_minor"; then
ok=yes
else
if test "$npth_version_minor" -eq "$req_minor"; then
ok=yes
fi
fi
fi
fi
fi
if test $ok = yes; then
AC_MSG_RESULT([yes ($npth_version)])
else
AC_MSG_RESULT(no)
fi
if test $ok = yes; then
# If we have a recent NPTH, we should also check that the
# API is compatible.
if test "$req_npth_api" -gt 0 ; then
tmp=`$NPTH_CONFIG --api-version 2>/dev/null || echo 0`
if test "$tmp" -gt 0 ; then
AC_MSG_CHECKING([NPTH API version])
if test "$req_npth_api" -eq "$tmp" ; then
AC_MSG_RESULT([okay])
else
ok=no
AC_MSG_RESULT([does not match. want=$req_npth_api got=$tmp])
fi
fi
fi
fi
if test $ok = yes; then
NPTH_CFLAGS=`$NPTH_CONFIG --cflags`
NPTH_LIBS=`$NPTH_CONFIG --libs`
ifelse([$2], , :, [$2])
npth_config_host=`$NPTH_CONFIG --host 2>/dev/null || echo none`
if test x"$npth_config_host" != xnone ; then
if test x"$npth_config_host" != x"$host" ; then
AC_MSG_WARN([[
***
*** The config script $NPTH_CONFIG was
*** built for $npth_config_host and thus may not match the
*** used host $host.
*** You may want to use the configure option --with-npth-prefix
*** to specify a matching config script.
***]])
fi
fi
else
NPTH_CFLAGS=""
NPTH_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(NPTH_CFLAGS)
AC_SUBST(NPTH_LIBS)
])
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