* Makefile.am (starttls_SOURCES): Add gnutls.c if USE_GNUTLS

[elisp/starttls.git] / configure.in

diff --git a/configure.in b/configure.in
index 9b530a8..c3aa0c1 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -23,15 +23,24 @@ AC_REPLACE_FUNCS(basename)
 AC_CHECK_FUNC(poll)
 
 AC_ARG_WITH(openssl,[  --with-openssl=PATH     use OpenSSL from PATH])
-
-if test -n "$with_openssl"; then
-       CPPFLAGS="$CPPFLAGS -I${with_openssl}/include"
-       LDFLAGS="$LDFLAGS -L${with_openssl}/lib"
+AC_ARG_WITH(gnutls,[  --with-gnutls     use GnuTLS instead of OpenSSL],
+       use_gnutls=true, use_gnutls=false)
+AM_CONDITIONAL(USE_GNUTLS, test x$use_gnutls = xtrue)
+
+if $use_gnutls; then
+       AC_CHECK_HEADER(gnutls/gnutls.h, [
+               AC_DEFINE(USE_GNUTLS)
+               AC_CHECK_LIB(gnutls, gnutls_global_init, LIBS="-lgnutls $LIBS")],
+               [GnuTLS is selected, but it is not installed])
+else
+       if test -n "$with_openssl"; then
+               CPPFLAGS="$CPPFLAGS -I${with_openssl}/include"
+               LDFLAGS="$LDFLAGS -L${with_openssl}/lib"
+       fi
+       AC_CHECK_HEADER(openssl/ssl.h, [
+               AC_CHECK_LIB(crypto, BIO_accept, LIBS="-lcrypto $LIBS")
+               AC_CHECK_LIB(ssl, SSL_CTX_new, LIBS="-lssl $LIBS")],
+               AC_MSG_ERROR([OpenSSL not installed - please install first]))
 fi
 
-AC_CHECK_HEADER(openssl/ssl.h, [
-       AC_CHECK_LIB(crypto, BIO_accept, LIBS="-lcrypto $LIBS")
-       AC_CHECK_LIB(ssl, SSL_CTX_new, LIBS="-lssl $LIBS")],
-       AC_MSG_ERROR([OpenSSL not installed - please install first]))
-
 AC_OUTPUT(Makefile)