X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=configure.ac;h=ce36408ad6e63eb17f31ff3ce881df9751bd7def;hb=5610bfab7fe9910823f05dc17d453271106047b1;hp=50ee2805611608d87eb889ca3786b30bc942b579;hpb=d6705de4986d84c2b4e93a39c5cb4782e611f812;p=xonotic%2Fd0_blind_id.git

diff --git a/configure.ac b/configure.ac
index 50ee280..ce36408 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,15 @@ AM_INIT_AUTOMAKE([-Wall foreign])
 AC_PROG_CC
 AC_PROG_LIBTOOL
 
-AC_SEARCH_LIBS(__gmpz_init, gmp, , [AC_MSG_ERROR([GNU MP not found, see http://gmplib.org/])])
+AC_ARG_WITH(openssl, AS_HELP_STRING([--with-openssl], [Use OpenSSL instead of GMP (beware of the OpenSSL license)]), [enable_openssl=$enableval], [enable_openssl=no])
+AM_CONDITIONAL(ENABLE_OPENSSL, [test x$enable_openssl = xyes])
+
+if test x$enable_openssl = xyes
+then
+	AC_SEARCH_LIBS(BN_init, ssl, , [AC_MSG_ERROR([OpenSSL not found, see http://www.openssl.org/, or try --without-openssl])])
+else
+	AC_SEARCH_LIBS(__gmpz_init, gmp, , [AC_MSG_ERROR([GNU MP not found, see http://gmplib.org/, or try --with-openssl])])
+fi
 
 AC_ARG_ENABLE(rijndael, AS_HELP_STRING([--disable-rijndael], [Disable build of the d0_rijndael library]), [enable_aes=$enableval], [enable_aes=yes])
 AM_CONDITIONAL(ENABLE_RIJNDAEL, [test x$enable_aes = xyes])