Test for libgnutls by hand rather than relying on deprecated libgnutl…

…s-config script.

Closes #3239.

--HG--
branch : HEAD

configure.ac

@@ -649,7 +649,7 @@ AM_CONDITIONAL(USE_GSS, test x$need_gss = xyes)
 
 dnl -- end imap dependencies --
 
-AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl@<:@=PFX@:>@], [Compile in SSL support for POP/IMAP/SMTP using OpenSSL]),
+AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl@<:@=PFX@:>@], [Enable TLS support using OpenSSL]),
 [       if test "$with_ssl" != "no"
         then
           if test "$need_socket" != "yes"; then
@@ -682,31 +682,38 @@ AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl@<:@=PFX@:>@], [Compile in SSL suppor
         fi
 ])
 
-AC_ARG_WITH([gnutls], AC_HELP_STRING([--with-gnutls@<:@=PFX@:>@], [Compile in SSL support for POP/IMAP/SMTP using gnutls]),
+AC_ARG_WITH([gnutls], AC_HELP_STRING([--with-gnutls@<:@=PFX@:>@], [enable TLS support using gnutls]),
     [gnutls_prefix="$withval"], [gnutls_prefix="no"])
 if test "$gnutls_prefix" != "no" && test x"$need_ssl" != xyes
 then
   if test "$need_socket" != "yes"
   then
     AC_MSG_WARN([SSL support is only useful with POP, IMAP or SMTP support])
   else
-    MUTT_AM_PATH_GNUTLS([$gnutls_prefix],
+    if test "$gnutls_prefix" != "yes"
+    then
+      LDFLAGS="$LDFLAGS -L$gnutls_prefix/lib"
+      CPPFLAGS="$CPPFLAGS -I$gnutls_prefix/include"
+    fi
+    saved_LIBS="$LIBS"
+
+    AC_CHECK_LIB(gnutls, gnutls_check_version,
       [dnl GNUTLS found
-      CPPFLAGS="$CPPFLAGS $LIBGNUTLS_CFLAGS"
-      MUTTLIBS="$MUTTLIBS $LIBGNUTLS_LIBS"
+      AC_CHECK_DECLS([GNUTLS_VERIFY_DISABLE_TIME_CHECKS], [], [],
+                    [[#include <gnutls/x509.h>]])
 
-      AC_DEFINE(USE_SSL,1,[ Define if you want support for SSL. ])
-      AC_DEFINE(USE_SSL_GNUTLS,1,[ Define if you want support for SSL via GNUTLS. ])
+      LIBS="$saved_LIBS"
+      MUTTLIBS="$MUTTLIBS -lgnutls"
+
+      AC_DEFINE(USE_SSL, 1, [ Define if you want support for SSL. ])
+      AC_DEFINE(USE_SSL_GNUTLS, 1, [ Define if you want support for SSL via GNUTLS. ])
 
       MUTT_LIB_OBJECTS="$MUTT_LIB_OBJECTS mutt_ssl_gnutls.o"
       need_ssl=yes],
-      [dnl GNUTLS not found
-        AC_MSG_ERROR([could not find libgnutls])
-      ])
-      AC_CHECK_DECLS([GNUTLS_VERIFY_DISABLE_TIME_CHECKS], [], [],
-                    [[#include <gnutls/x509.h>]])
+      [AC_MSG_ERROR([could not find libgnutls])])
   fi
 fi
+
 AM_CONDITIONAL(USE_SSL, test x$need_ssl = xyes)
 
 AC_ARG_WITH(sasl, AC_HELP_STRING([--with-sasl@<:@=PFX@:>@], [Use Cyrus SASL 2 network security library]),