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# LIBEVENT_CHECK_CONFIG ([DEFAULT-ACTION])
# ----------------------------------------------------------
# Andris Zeila Dec-13-2016
#
# Checks for libevent. DEFAULT-ACTION is the string yes or no to
# specify whether to default to --with-libevent or --without-libevent.
# If not supplied, DEFAULT-ACTION is no.
#
# This macro #defines HAVE_LIBEVENT if a required header files is
# found, and sets @LIBEVENT_LDFLAGS@ and @LIBEVENT_CFLAGS@ to the necessary
# values.
#
# 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([LIBEVENT_TRY_LINK],
[
AC_TRY_LINK(
[
#include <stdlib.h>
#include <event.h>
],
[
event_init();
],
found_libevent="yes")
])dnl
AC_DEFUN([LIBEVENT_CHECK_CONFIG],
[
AC_ARG_WITH([libevent],[
If you want to specify libevent installation directories:
AC_HELP_STRING([--with-libevent@<:@=DIR@:>@], [use libevent from given base install directory (DIR), default is to search through a number of common places for the libevent files.])],
[
test "x$withval" = "xyes" && withval=/usr
LIBEVENT_CFLAGS="-I$withval/include"
LIBEVENT_LDFLAGS="-L$withval/lib"
_libevent_dir_set="yes"
]
)
AC_ARG_WITH([libevent-include],
AC_HELP_STRING([--with-libevent-include@<:@=DIR@:>@],
[use libevent include headers from given path.]
),
[
LIBEVENT_CFLAGS="-I$withval"
_libevent_dir_set="yes"
]
)
AC_ARG_WITH([libevent-lib],
AC_HELP_STRING([--with-libevent-lib@<:@=DIR@:>@],
[use libevent libraries from given path.]
),
[
LIBEVENT_LDFLAGS="-L$withval"
_libevent_dir_set="yes"
]
)
AC_MSG_CHECKING(for libevent support)
LIBEVENT_LIBS="-levent"
if test -n "$_libevent_dir_set" -o -f /usr/include/event.h; then
found_libevent="yes"
elif test -f /usr/local/include/event.h; then
LIBEVENT_CFLAGS="-I/usr/local/include"
LIBEVENT_LDFLAGS="-L/usr/local/lib"
found_libevent="yes"
else
found_libevent="no"
AC_MSG_RESULT(no)
fi
if test "x$found_libevent" = "xyes"; then
am_save_CFLAGS="$CFLAGS"
am_save_LDFLAGS="$LDFLAGS"
am_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $LIBEVENT_CFLAGS"
LDFLAGS="$LDFLAGS $LIBEVENT_LDFLAGS"
LIBS="$LIBS $LIBEVENT_LIBS"
found_libevent="no"
LIBEVENT_TRY_LINK([no])
CFLAGS="$am_save_CFLAGS"
LDFLAGS="$am_save_LDFLAGS"
LIBS="$am_save_LIBS"
fi
if test "x$found_libevent" = "xyes"; then
AC_DEFINE([HAVE_LIBEVENT], 1, [Define to 1 if you have the 'libevent' library (-levent)])
AC_MSG_RESULT(yes)
else
LIBEVENT_CFLAGS=""
LIBEVENT_LDFLAGS=""
LIBEVENT_LIBS=""
fi
AC_SUBST(LIBEVENT_CFLAGS)
AC_SUBST(LIBEVENT_LDFLAGS)
AC_SUBST(LIBEVENT_LIBS)
])dnl
|
