Use pkg-config (if available) to handle OpenSSL.

Makefile.am

@@ -209,6 +209,7 @@ if OPENSSL
 libevent_openssl_la_SOURCES = bufferevent_openssl.c
 libevent_openssl_la_LIBADD = $(MAYBE_CORE) $(OPENSSL_LIBS)
 libevent_openssl_la_LDFLAGS = $(GENERIC_LDFLAGS)
+libevent_openssl_la_CPPFLAGS = $(OPENSSL_INCS)
 endif
 
 noinst_HEADERS = util-internal.h mm-internal.h ipv6-internal.h \

configure.in

@@ -163,22 +163,7 @@ fi
 AC_SUBST(EV_LIB_WS32)
 AC_SUBST(EV_LIB_GDI)
 
-AC_CHECK_HEADERS([openssl/bio.h])
-
-if test "$enable_openssl" = "yes"; then
-save_LIBS="$LIBS"
-LIBS=""
-OPENSSL_LIBS=""
-have_openssl=no
-AC_SEARCH_LIBS([SSL_new], [ssl],
-	[have_openssl=yes
-	OPENSSL_LIBS="$LIBS -lcrypto $EV_LIB_GDI $EV_LIB_WS32"
-	AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl])],
-	[have_openssl=no],
-	[-lcrypto $EV_LIB_GDI $EV_LIB_WS32])
-LIBS="$save_LIBS"
-AC_SUBST(OPENSSL_LIBS)
-fi
+LIBEVENT_OPENSSL
 
 dnl Checks for header files.
 AC_HEADER_STDC

sample/Makefile.am

@@ -13,6 +13,7 @@ hello_world_sources = hello-world.c
 http_server_sources = http-server.c
 
 if OPENSSL
+AM_CPPFLAGS += $(OPENSSL_INCS)
 noinst_PROGRAMS += le-proxy
 le_proxy_sources = le-proxy.c
 le_proxy_LDADD = $(LDADD) ../libevent_openssl.la