source: trunk/m4/ssl.m4 @ 704

# Copyright (c) 2005-2008 David Carter <dcarter@arm4.org> and others.
# All rights reserved.   This program and the accompanying materials
# are made available under the terms of the Eclipse Public License v1.0
# which accompanies this distribution, and is available at
# http://www.eclipse.org/legal/epl-v10.html

# Check for the MD5 headers, and which libraries need to be linked

AC_DEFUN([__ARM4_SSL_CHECKLINK],
[
  SSL_LIBS="$1"
  ac_save_LIBS="$LIBS"
  LIBS="$LIBS $SSL_LIBS"
  AC_LINK_IFELSE([
#include <unistd.h>
#include <openssl/md5.h>

main ()
{
        MD5_CTX ctx;
        
        MD5_Init (&ctx);
}
], ,[SSL_LIBS=""])
  LIBS="$ac_save_libs"
  AC_SUBST(SSL_LIBS)
])

AC_DEFUN([ARM4_CHECK_SSL],
[
  arm4_md5_h=no
  AC_CHECK_HEADER([openssl/md5.h],[arm4_md5_h=yes],,)
  if test "$arm4_md5_h" = "yes" ; then
    __ARM4_SSL_CHECKLINK([-lssl -lcrypto])
    if test "x$SSL_LIBS" = "x" ; then
      arm4_md5_h=no
    fi
  fi
  if test "x$SSL_LIBS" = x ; then
    AC_MSG_ERROR([this platform doesn't support MD5 generation])
  fi
  if test "$arm4_md5_h" = "yes" ; then
    AC_DEFINE(HAVE_OPENSSL_MD5_H, 1,
      [Define to 1 if you have the <openssl/md5.h> header file.])
  fi
])