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# GnuTLS LIBGNUTLS_CHECK_CONFIG ([DEFAULT-ACTION])
# ----------------------------------------------------------
# Derived from libssh2.m4
#
# Checks for GnuTLS library libgnutls. DEFAULT-ACTION is the string
# yes or no to specify whether to default to --with-gnutls or
# --without-gnutls. If not supplied, DEFAULT-ACTION is no.
#
# This macro #defines HAVE_GNUTLS if a required header files are
# found, and sets @GNUTLS_LDFLAGS@, @GNUTLS_CFLAGS@ and @GNUTLS_LIBS@
# to the necessary values.
#
# Users may override the detected values by doing something like:
# GNUTLS_LIBS="-lgnutls" GNUTLS_CFLAGS="-I/usr/myinclude" ./configure
#
# This macro is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
AC_DEFUN([LIBGNUTLS_TRY_LINK],
[
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <gnutls/gnutls.h>
]], [[
gnutls_global_init();
]])],[found_gnutls="yes"],[])
])dnl
AC_DEFUN([LIBGNUTLS_ACCEPT_VERSION],
[
# Zabbix minimal supported version of libgnutls:
minimal_gnutls_version_major=3
minimal_gnutls_version_minor=1
minimal_gnutls_version_patch=18
# get version
found_gnutls_version_major=`cat $1 | $EGREP \#define.*GNUTLS_VERSION_MAJOR | $AWK '{print @S|@3;}'`
found_gnutls_version_minor=`cat $1 | $EGREP \#define.*GNUTLS_VERSION_MINOR | $AWK '{print @S|@3;}'`
found_gnutls_version_patch=`cat $1 | $EGREP \#define.*GNUTLS_VERSION_PATCH | $AWK '{print @S|@3;}'`
if test $((found_gnutls_version_major)) -gt $((minimal_gnutls_version_major)); then
accept_gnutls_version="yes"
elif test $((found_gnutls_version_major)) -lt $((minimal_gnutls_version_major)); then
accept_gnutls_version="no"
elif test $((found_gnutls_version_minor)) -gt $((minimal_gnutls_version_minor)); then
accept_gnutls_version="yes"
elif test $((found_gnutls_version_minor)) -lt $((minimal_gnutls_version_minor)); then
accept_gnutls_version="no"
elif test $((found_gnutls_version_patch)) -ge $((minimal_gnutls_version_patch)); then
accept_gnutls_version="yes"
else
accept_gnutls_version="no"
fi;
])dnl
AC_DEFUN([LIBGNUTLS_CHECK_CONFIG],
[
AC_ARG_WITH(gnutls,[
If you want to use encryption provided by GnuTLS library:
AS_HELP_STRING([--with-gnutls@<:@=DIR@:>@],[use GnuTLS package @<:@default=no@:>@, DIR is the libgnutls install directory.])],
[
if test "$withval" = "no"; then
want_gnutls="no"
_libgnutls_dir="no"
elif test "$withval" = "yes"; then
want_gnutls="yes"
_libgnutls_dir="no"
else
want_gnutls="yes"
_libgnutls_dir=$withval
fi
accept_gnutls_version="no"
],[want_gnutls=ifelse([$1],,[no],[$1])]
)
if test "x$want_gnutls" = "xyes"; then
AC_MSG_CHECKING(for GnuTLS support)
if test "x$_libgnutls_dir" = "xno"; then
if test -f /usr/local/include/gnutls/gnutls.h; then
GNUTLS_CFLAGS=-I/usr/local/include
GNUTLS_LDFLAGS=-L/usr/local/lib
GNUTLS_LIBS="-lgnutls"
found_gnutls="yes"
LIBGNUTLS_ACCEPT_VERSION([/usr/local/include/gnutls/gnutls.h])
elif test -f /usr/include/gnutls/gnutls.h; then
GNUTLS_CFLAGS=-I/usr/include
GNUTLS_LDFLAGS=-L/usr/lib
GNUTLS_LIBS="-lgnutls"
found_gnutls="yes"
LIBGNUTLS_ACCEPT_VERSION([/usr/include/gnutls/gnutls.h])
else #libraries are not found in default directories
found_gnutls="no"
AC_MSG_RESULT(no)
fi
else
if test -f $_libgnutls_dir/include/gnutls/gnutls.h; then
GNUTLS_CFLAGS=-I$_libgnutls_dir/include
GNUTLS_LDFLAGS=-L$_libgnutls_dir/lib
GNUTLS_LIBS="-lgnutls"
found_gnutls="yes"
LIBGNUTLS_ACCEPT_VERSION([$_libgnutls_dir/include/gnutls/gnutls.h])
else
found_gnutls="no"
AC_MSG_RESULT(no)
fi
fi
fi
if test "x$found_gnutls" = "xyes"; then
am_save_cflags="$CFLAGS"
am_save_ldflags="$LDFLAGS"
am_save_libs="$LIBS"
CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
LDFLAGS="$LDFLAGS $GNUTLS_LDFLAGS"
LIBS="$LIBS $GNUTLS_LIBS"
found_gnutls="no"
LIBGNUTLS_TRY_LINK([no])
CFLAGS="$am_save_cflags"
LDFLAGS="$am_save_ldflags"
LIBS="$am_save_libs"
if test "x$found_gnutls" = "xyes"; then
AC_DEFINE([HAVE_GNUTLS], 1, [Define to 1 if you have the 'libgnutls' library (-lgnutls)])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
GNUTLS_CFLAGS=""
GNUTLS_LDFLAGS=""
GNUTLS_LIBS=""
fi
fi
AC_SUBST(GNUTLS_CFLAGS)
AC_SUBST(GNUTLS_LDFLAGS)
AC_SUBST(GNUTLS_LIBS)
])dnl