1 # gl-openssl.m4 serial 3
2 dnl Copyright (C) 2013 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_SET_CRYPTO_CHECK_DEFAULT],
9 m4_define([gl_CRYPTO_CHECK_DEFAULT], [$1])
11 gl_SET_CRYPTO_CHECK_DEFAULT([no])
13 AC_DEFUN([gl_CRYPTO_CHECK],
15 m4_divert_once([DEFAULTS], [with_openssl_default='gl_CRYPTO_CHECK_DEFAULT'])
17 AC_ARG_WITH([openssl],
18 [AS_HELP_STRING([--with-openssl],
19 [use libcrypto hash routines. Valid ARGs are:
20 'yes', 'no', 'auto' => use if available,
21 'optional' => use if available and warn if not available;
22 default is ']gl_CRYPTO_CHECK_DEFAULT['])],
24 [with_openssl=$with_openssl_default])
26 if test "x$1" = xMD5; then
33 AC_SUBST([LIB_CRYPTO])
34 if test "x$with_openssl" != xno; then
35 AC_CHECK_LIB([crypto], [$1],
36 [AC_CHECK_HEADERS([openssl/$ALG_header],
38 AC_DEFINE([HAVE_OPENSSL_$1], [1],
39 [Define to 1 if libcrypto is used for $1.])])])
40 if test "x$LIB_CRYPTO" = x; then
41 if test "x$with_openssl" = xyes; then
42 AC_MSG_ERROR([openssl development library not found for $1])
43 elif test "x$with_openssl" = xoptional; then
44 AC_MSG_WARN([openssl development library not found for $1])