$NetBSD: patch-configure.ac,v 1.4 2021/12/15 14:06:21 schmonz Exp $

Remove anonymous inner functions to build with clang.
Remove outdated OpenSSL check to build with 1.1.x.
Respect CFLAGS.

--- configure.ac.orig	2015-04-30 00:53:36.000000000 +0000
+++ configure.ac
@@ -22,7 +22,7 @@ AC_CONFIG_SRCDIR([spamdyke.h])
 AC_CONFIG_HEADER([config.h])
 
 AC_LANG_WERROR
-CFLAGS=-Wall
+CFLAGS="${CFLAGS} -Wall"
 
 # Checks for programs.
 AC_PROG_CC([[gcc]])
@@ -148,25 +148,15 @@ AS_IF([ test "x$enable_tls" != "xno" ],
                        [],
                        [
                          AC_MSG_RESULT([yes])
-                         AC_SEARCH_LIBS([RSA_sign], [ssl crypto], [], [ AC_MSG_FAILURE([--enable-tls was given but OpenSSL was not found]) ])
-                         AC_SEARCH_LIBS([SSL_library_init],
-                                        [ssl crypto],
-                                        [ LIBS="$LIBS -lssl"
-                                          AC_DEFINE([HAVE_LIBSSL], [1])
-                                          AC_MSG_CHECKING([for OpenSSL libraries (for TLS support)]) 
-                                          AC_MSG_RESULT([yes])
-                                        ],
-                                        [ AS_IF([ test "x$enable_tls" = "xcheck" ],
-                                                [ AC_MSG_CHECKING([for OpenSSL libraries (for TLS support)])
-                                                  AC_MSG_RESULT([no, TLS disabled]) ],
-                                                [ AC_MSG_FAILURE([--enable-tls was given but OpenSSL was not found])
-                                                ])
-                                        ])
+                         AC_SEARCH_LIBS([RSA_sign], [ssl crypto],
+					[ LIBS="$LIBS -lssl"
+					  AC_DEFINE([HAVE_LIBSSL], [1])
+					],
+					[ AC_MSG_FAILURE([--enable-tls was given but OpenSSL was not found]) ])
                        ],
                        [
                          AC_MSG_RESULT([no])
-                         AC_MSG_NOTICE([Unable to include openssl/ssl.h (required by OpenSSL), TLS support disabled])
-                         enable_tls="no"
+                         AC_MSG_NOTICE([Unable to include openssl/ssl.h (required by OpenSSL)])
                        ])
       ],
       [ AC_MSG_NOTICE([OpenSSL check skipped, TLS support disabled]) ]
@@ -188,37 +178,6 @@ AC_SEARCH_LIBS([getopt_long],
                                 [ AC_MSG_FAILURE([unable to compile without getopt_long(), you may need to install the libgnugetopt package/port]) ])
                ])
 
-# Checks for the flag to compile anonymous inner functions.
-AC_MSG_CHECKING([whether anonymous inner functions are supported by default])
-AC_TRY_COMPILE([],
-               [ int (*bar)(int) = ({ int tmp_action(int foo) { foo++; return(0); } &tmp_action; }); (*bar)(0); ],
-               [ AC_MSG_RESULT([yes]) ],
-               [ AC_MSG_RESULT([no])
-                 OLD_CFLAGS=$CFLAGS
-                 CFLAGS="$OLD_CFLAGS -fnested-functions"
-                 AC_MSG_CHECKING([whether anonymous inner functions are supported with -fnested-functions])
-                 AC_TRY_COMPILE([],
-                                [ int (*bar)(int) = ({ int tmp_action(int foo) { foo++; return(0); } &tmp_action; }); (*bar)(0); ],
-                                [ AC_MSG_RESULT([yes]) ],
-                                [ AC_MSG_RESULT([no])
-                                  CFLAGS="$OLD_CFLAGS -ftrampolines"
-                                  AC_MSG_CHECKING([whether anonymous inner functions are supported with -ftrampolines])
-                                  AC_TRY_COMPILE([],
-                                                 [ int (*bar)(int) = ({ int tmp_action(int foo) { foo++; return(0); } &tmp_action; }); (*bar)(0); ],
-                                                 [ AC_MSG_RESULT([yes]) ],
-                                                 [ AC_MSG_RESULT([no])
-                                                   CFLAGS="$OLD_CFLAGS -Wp,-Wno-trampolines"
-                                                   AC_MSG_CHECKING([whether anonymous inner functions are supported with -Wp,-Wno-trampolines])
-                                                   AC_TRY_COMPILE([],
-                                                                  [ int (*bar)(int) = ({ int tmp_action(int foo) { foo++; return(0); } &tmp_action; }); (*bar)(0); ],
-                                                                  [ AC_MSG_RESULT([yes]) ],
-                                                                  [ AC_MSG_RESULT([no])
-                                                                    AC_MSG_FAILURE([Unable to compile without anonymous inner function support.])
-                                                                  ])
-                                                 ])
-                                ])
-               ])
-
 AC_MSG_CHECKING([whether struct option is defined in getopt.h])
 AC_TRY_COMPILE([ #define _GNU_SOURCE
                  #include <stdio.h>