buildsys: use pkg-config for openssl detection

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

configure.ac

@@ -157,17 +157,15 @@ AC_CHECK_LIB([archive], [archive_read_data], ,
 	AC_MSG_ERROR([libarchive is needed to compile pacman!]))
 
 # Check for OpenSSL
-AC_MSG_CHECKING(whether to link with libssl)
-AS_IF([test "x$with_openssl" != "xno"],
-	[AC_MSG_RESULT(yes)
-	AC_CHECK_LIB([ssl], [MD5_Final], ,
-	[if test "x$with_openssl" != "xcheck"; then
-		AC_MSG_FAILURE([--with-openssl was given, but -lssl was not found])
-	fi],
-	[-lcrypto])
-	with_openssl=$ac_cv_lib_ssl_MD5_Final],
-	AC_MSG_RESULT(no))
-AM_CONDITIONAL([HAVE_LIBSSL], [test "x$with_openssl" = "xyes"])
+have_openssl=no
+if test "x$with_openssl" != "xno"; then
+	PKG_CHECK_MODULES(LIBSSL, [libssl libcrypto],
+		[AC_DEFINE(HAVE_LIBSSL, 1, [Define if libcrypto is available]) have_openssl=yes], have_openssl=no)
+	if test "x$have_openssl" = xno -a "x$with_openssl" = xyes; then
+		AC_MSG_ERROR([*** openssl support requested but libraries not found])
+	fi
+fi
+AM_CONDITIONAL(HAVE_LIBSSL, [test "$have_openssl" = "yes"])
 
 # Check for gpgme
 AC_MSG_CHECKING(whether to link with libgpgme)
@@ -414,7 +412,7 @@ ${PACKAGE_NAME}:
     preprocessor flags     : ${CPPFLAGS}
     compiler flags         : ${CFLAGS}
     defines                : ${DEFS}
-    library flags          : ${LIBS}
+    library flags          : ${LIBS} ${LIBSSL_LIBS}
     linker flags           : ${LDFLAGS}
 
     Architecture           : ${CARCH}
@@ -436,7 +434,7 @@ ${PACKAGE_NAME}:
   Compilation options:
     Use libcurl            : ${with_libcurl}
     Use GPGME              : ${with_gpgme}
-    Use OpenSSL            : ${with_openssl}
+    Use OpenSSL            : ${have_openssl}
     Run make in doc/ dir   : ${wantdoc} ${asciidoc}
     Doxygen support        : ${usedoxygen}
     debug support          : ${debug}

lib/libalpm/Makefile.am

@@ -64,6 +64,13 @@ libalpm_la_SOURCES += \
 endif
 
 libalpm_la_LDFLAGS = -no-undefined -version-info $(LIB_VERSION_INFO) @LIBCURL@
-libalpm_la_LIBADD = $(LTLIBINTL)
+
+libalpm_la_CFLAGS = \
+	$(AM_CFLAGS) \
+	$(LIBSSL_CFLAGS)
+
+libalpm_la_LIBADD = \
+	$(LTLIBINTL) \
+	$(LIBSSL_LIBS)
 
 # vim:set ts=2 sw=2 noet:

src/util/Makefile.am

@@ -35,6 +35,6 @@ testpkg_SOURCES = testpkg.c
 testpkg_LDADD = $(top_builddir)/lib/libalpm/.libs/libalpm.la
 
 vercmp_SOURCES = vercmp.c
-vercmp_LDADD = $(top_builddir)/lib/libalpm/version.lo
+vercmp_LDADD = $(top_builddir)/lib/libalpm/libalpm_la-version.lo
 
 # vim:set ts=2 sw=2 noet: