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From a6c35dbab5a2a75c176e031122ee64152e50e5d3 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Thu, 1 Jan 2015 12:23:43 +0100
Subject: [PATCH] Switch to use pkg-config to detect libevent and openssl
Switching to pkg-config fixes a number of problems when detecting the
libraries. For example the detection of libpthread was failing,
because libevent_threads was added to LIBS before libevent itself,
causing the libpthread test to fail due to missing symbols. pkg-config
is anyway nowadays the preferred way for detecting libraries. It also
has the benefit of working properly in static library situations.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
configure.ac | 36 ++++++++++++------------------------
1 file changed, 12 insertions(+), 24 deletions(-)
diff --git a/configure.ac b/configure.ac
index d4109ce..fc1cadc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,35 +27,20 @@ AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_CHECK_FUNCS([memset socket strstr])
-AC_CHECK_HEADERS([event2/thread.h], [
- LIBS="-levent_pthreads ${LIBS}"
- ], [
- echo "libevent_pthreads required, failing"
- exit -1
- ])
-AC_CHECK_LIB(pthread, pthread_create, [LIBS="-lpthread ${LIBS}"], [
+AC_CHECK_LIB(pthread, pthread_create, [PTHREAD_LIBS="-lpthread"], [
echo "pthreads required, failing"
exit -1
])
-AC_CHECK_LIB(event, event_base_dispatch, [], [
- echo "libevent required, failing"
- exit -1
- ])
+
+PKG_CHECK_MODULES([EVENT], [libevent])
+PKG_CHECK_MODULES([EVENT_PTHREAD], [libevent_pthreads])
AS_IF([test "x$with_ssl" != "xno"],
[
- AC_CHECK_LIB([ssl], [SSL_CTX_new],
- [
- LIBS="-lssl ${LIBS}"
- AC_CHECK_LIB([event_openssl], [bufferevent_openssl_socket_new], [
- LIBS="-levent_openssl ${LIBS}"
- have_ssl=yes
- ], [have_ssl=no])
- ],
- [have_ssl=no])
- ],
- [have_ssl=no])
-
+ PKG_CHECK_MODULES([SSL], [openssl], [have_ssl=yes], [have_ssl=no])
+ AS_IF([test "x${have_ssl}" = "xyes"],
+ [PKG_CHECK_MODULES([EVENT_OPENSSL], [libevent_openssl], [have_ssl=yes], [have_ssl=no])])])
+
AS_IF([test "x$have_ssl" = "xyes"],
[
AC_DEFINE([WEBSOCK_HAVE_SSL], [1], [Define if building SSL support])
@@ -63,8 +48,11 @@ AS_IF([test "x$have_ssl" = "xyes"],
[AS_IF([test "x$with_ssl" = "xyes"],
[AC_MSG_ERROR([SSL support requested but not found])
])])
-
+
AM_CONDITIONAL([HAVE_SSL], [test "x$have_ssl" = "xyes"])
+
+LIBS="${EVENT_LIBS} ${EVENT_PTHREAD_LIBS} ${PTHREAD_LIBS} ${SSL_LIBS} ${EVENT_OPENSSL_LIBS}"
+
AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_VERSION], ["$PACKAGE_VERSION"], [libwebsock version])
AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_STRING], ["$PACKAGE_STRING"], [libwebsock package string])
AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_NAME], ["$PACKAGE_NAME"], [libwebsock package name])
--
2.1.0
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