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# libcap-ng.m4 - Checks for the libcap-ng support
# Copyright (c) 2009 Steve Grubb sgrubb@redhat.com
#
AC_DEFUN([LIBCAP_NG_PATH],
[
AC_ARG_WITH(libcap-ng,
[ --with-libcap-ng=[auto/yes/no] Add Libcap-ng support [default=auto]],,
with_libcap_ng=auto)
# Check for Libcap-ng API
#
# libcap-ng detection
if test x$with_libcap_ng = xno ; then
have_libcap_ng=no;
else
# Start by checking for header file
AC_CHECK_HEADER(cap-ng.h, capng_headers=yes, capng_headers=no)
# See if we have libcap-ng library
AC_CHECK_LIB(cap-ng, capng_clear,
CAPNG_LDADD=-lcap-ng,)
# Check results are usable
if test x$with_libcap_ng = xyes -a x$CAPNG_LDADD = x ; then
AC_MSG_ERROR(libcap-ng support was requested and the library was not found)
fi
if test x$CAPNG_LDADD != x -a $capng_headers = no ; then
AC_MSG_ERROR(libcap-ng libraries found but headers are missing)
fi
fi
AC_SUBST(CAPNG_LDADD)
AC_MSG_CHECKING(whether to use libcap-ng)
if test x$CAPNG_LDADD != x ; then
AC_DEFINE(HAVE_LIBCAP_NG,1,[libcap-ng support])
AC_CHECK_DECLS([CAPNG_AMBIENT], [], [], [[#include <cap-ng.h>]])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
])
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