[PATCH] Make AC_CHECK_LIB failure for libevent explicit

[PATCH] Make AC_CHECK_LIB failure for libevent explicit

[Matthew Farrellee]

When libevent headers were missing, configure would complete with an
exit code of 1, but no clear message as to what failed. This patch
makes things more clear as to why configure is exiting. It could be
extended to include information about needing libevent headers or
development libraries.

Signed-off-by: Matthew Farrellee <matt@redhat.com>
---
 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index acea808..eb6a968 100644
--- a/configure.ac
+++ b/configure.ac
@@ -74,7 +74,8 @@ dnl Checks for required libraries
 dnl -----------------------------
 AC_CHECK_LIB(crypto, MD5_Init, CRYPTO_LIBS=-lcrypto)
 AC_CHECK_LIB(ssl, SSL_new, SSL_LIBS=-lssl)
-AC_CHECK_LIB(event, event_base_new, EVENT_LIBS=-levent, exit 1)
+AC_CHECK_LIB(event, event_base_new, EVENT_LIBS=-levent_core,
+   [AC_MSG_ERROR([Missing required libevent])])
 AC_CHECK_LIB(argp, argp_parse, ARGP_LIBS=-largp)
 AC_CHECK_LIB(socket, bind, SOCKET_LIBS=-lsocket)
 PKG_CHECK_MODULES(CLDC, libcldc)