#
AC_DEFUN([lldp_CHECK_LIBEVENT], [
- LIBEVENT_URL=http://libevent.org/
- _save_LIBS="$LIBS"
- _save_CFLAGS="$CFLAGS"
+ # Do we require embedded libevent?
+ AC_ARG_WITH([embedded-libevent],
+ AS_HELP_STRING(
+ [--with-embedded-libevent],
+ [Use embedded libevent @<:@default=auto@:>@]
+ ), [], [with_embedded_libevent=auto])
+ if test x"$with_embedded_libevent" = x"yes"; then
+ LIBEVENT_EMBEDDED=1
+ else
+ # If not forced, check first with pkg-config
+ PKG_CHECK_MODULES([LIBEVENT], [libevent >= 2.0.5], [
+ # Check if we have a working libevent
+ AC_MSG_CHECKING([if system libevent works as expected])
+ _save_CFLAGS="$CFLAGS"
+ _save_LIBS="$LIBS"
+ CFLAGS="$CFLAGS $LIBEVENT_CFLAGS"
+ LIBS="$LIBS $LIBEVENT_LIBS"
+ AC_TRY_LINK([
+@%:@include <sys/time.h>
+@%:@include <sys/types.h>
+@%:@include <event2/event.h>], [ struct event_base *base = event_base_new(); event_new(base, -1, 0, NULL, NULL); ],
+ [
+ AC_MSG_RESULT([yes])
+ ], [
+ if test x"$with_embedded_libevent" = x"auto"; then
+ AC_MSG_RESULT([no, using shipped libevent])
+ LIBEVENT_EMBEDDED=1
+ else
+ AC_MSG_ERROR([*** unusable system libevent])
+ fi
+ ])
+ CFLAGS="$_save_CFLAGS"
+ LIBS="$_save_LIBS"
+ ], [
+ # No appropriate version, let's use the shipped copy if possible
+ if test x"$with_embedded_libevent" = x"auto"; then
+ AC_MSG_NOTICE([using shipped libevent])
+ LIBEVENT_EMBEDDED=1
+ else
+ AC_MSG_ERROR([*** libevent not found])
+ fi
+ ])
+ fi
- # First, try with pkg-config
- PKG_CHECK_MODULES([LIBEVENT], [libevent >= 2.0.5], [], [
- # No appropriate version, let's use the shipped copy
- AC_MSG_NOTICE([using shipped libevent])
+ if test x"$LIBEVENT_EMBEDDED" != x; then
+ unset LIBEVENT_LIBS
LIBEVENT_CFLAGS="-I\$(top_srcdir)/libevent/include -I\$(top_builddir)/libevent/include"
- LIBEVENT_LIBS="\$(top_builddir)/libevent/libevent.la"
LIBEVENT_LDFLAGS="\$(top_builddir)/libevent/libevent.la"
- ])
+ fi
- # Override configure arguments
- ac_configure_args="$ac_configure_args --disable-libevent-regress --disable-thread-support --disable-shared --enable-static"
- AC_CONFIG_SUBDIRS([libevent])
- AM_CONDITIONAL([LIBEVENT_EMBEDDED], [test x"$LIBEVENT_LDFLAGS" != x])
+ # Call ./configure in libevent. Need it for make dist...
+ libevent_configure_args="$libevent_configure_args --disable-libevent-regress"
+ libevent_configure_args="$libevent_configure_args --disable-thread-support"
+ libevent_configure_args="$libevent_configure_args --disable-openssl"
+ libevent_configure_args="$libevent_configure_args --disable-malloc-replacement"
+ libevent_configure_args="$libevent_configure_args --disable-debug-mode"
+ libevent_configure_args="$libevent_configure_args --enable-function-sections"
+ libevent_configure_args="$libevent_configure_args --disable-shared"
+ libevent_configure_args="$libevent_configure_args --with-pic"
+ libevent_configure_args="$libevent_configure_args --enable-static"
+ lldp_CONFIG_SUBDIRS([libevent], [$libevent_configure_args])
+
+ AM_CONDITIONAL([LIBEVENT_EMBEDDED], [test x"$LIBEVENT_EMBEDDED" != x])
AC_SUBST([LIBEVENT_LIBS])
AC_SUBST([LIBEVENT_CFLAGS])
AC_SUBST([LIBEVENT_LDFLAGS])