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# SYNOPSIS
#
# AX_CHECK_ATM([action-if-found[, action-if-not-found]])
#
# DESCRIPTION
#
# Look for libatm in a number of default locations, or in a provided location
# (via --with-atm=). Sets
# ATM_CFLAGS
# ATM_LDFLAGS
# ATM_LIBS
#
# and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
#
# LICENSE
#
# Copyright (c) 2021 Eivind Naess <eivnaes@yahoo.com>
#
# 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. This file is offered as-is, without any
# warranty.
#serial 1
AC_DEFUN([AX_CHECK_ATM], [
AC_ARG_WITH([atm],
[AS_HELP_STRING([--with-atm=DIR],
[With libatm support, see http://linux-atm.sourceforge.net])],
[
case "$withval" in
"" | y | ye | yes)
atmdirs="/usr/local /usr/lib /usr"
;;
n | no)
with_atm="no"
;;
*)
atmdirs="$withval"
;;
esac
])
if [ test "x${with_atm}" != "xno" ] ; then
ATM_LIBS="-latm"
for atmdir in $atmdirs; do
AC_MSG_CHECKING([for atm.h in $atmdir])
if test -f "$atmdir/include/atm.h"; then
ATM_CFLAGS="-I$atmdir/include"
ATM_LDFLAGS="-L$atmdir/lib"
AC_MSG_RESULT([yes])
break
else
AC_MSG_RESULT([no])
fi
done
# try the preprocessor and linker with our new flags,
# being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
AC_MSG_CHECKING([if compiling and linking against libatm works])
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
save_CPPFLAGS="$CPPFLAGS"
LDFLAGS="$LDFLAGS $ATM_LDFLAGS"
LIBS="$ATM_LIBS $LIBS"
CPPFLAGS="$ATM_CFLAGS $CPPFLAGS"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[#include <atm.h>
#include <stddef.h>],
[text2atm(NULL,NULL,0,0);])],
[
AC_MSG_RESULT([yes])
with_atm=yes
$1
], [
AC_MSG_RESULT([no])
with_atm="no"
$2
])
CPPFLAGS="$save_CPPFLAGS"
LDFLAGS="$save_LDFLAGS"
LIBS="$save_LIBS"
AC_SUBST([ATM_CFLAGS])
AC_SUBST([ATM_LIBS])
AC_SUBST([ATM_LDFLAGS])
fi
AM_CONDITIONAL(WITH_LIBATM, test "x${with_atm}" != "xno")
])
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