Switched build system to meson.

src/config.h.in

@@ -0,0 +1,4 @@
+#pragma once
+
+#define LOCAL_SCAN_VERSION @local_scan_version@
+

src/libexim-encrypt-dlfunc.c

@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
@@ -6,8 +8,10 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#define LOCAL_SCAN
+#define DLFUNC_IMPL
 /* Exim4 dlfunc API header */
-#include <local_scan.h>
+#include <exim4/local_scan.h>
 
 /*
  * This is a set of workarounds for the different exim local_scan ABI versions, distribution patches and missing
@@ -21,26 +25,14 @@
  * 3.1  Ubuntu 20-04 (Focal)
  */
 
-// local_scan ABI version < 3
-#if LOCAL_SCAN_ABI_VERSION_MAJOR < 3
-#define LOCAL_SCAN
+#if LOCAL_SCAN_VERSION < 3
 #define store_get_untainted(size) store_get(size)
 #define store_get_tainted(size) store_get(size)
-
-// local_scan ABI version == 3
-#elif LOCAL_SCAN_ABI_VERSION_MAJOR == 3
-#define DLFUNC_IMPL
+#elif LOCAL_SCAN_VERSION >= 3
 #define store_get_untainted(size) store_get(size, FALSE)
 #define store_get_tainted(size) store_get(size, TRUE)
-
-# define string_copy(s) string_copy_function(s)
-extern uschar * string_copy_function(const uschar *);
-
-// local_scan ABI version > 3
 #else
-#define DLFUNC_IMPL
-#define store_get_untainted(size) store_get(size, FALSE)
-#define store_get_tainted(size) store_get(size, TRUE)
+#error "exim4 local version"
 #endif
 
 /*
@@ -329,4 +321,4 @@ int sodium_crypto_box_seal_open(uschar **yield, int argc, uschar *argv[]) {
     // return cleartext
     *yield = string_copy(cleartext);
     return OK;
-}
+}

src/meson.build

@@ -0,0 +1,14 @@
+configure_file(input: 'config.h.in',
+		      output: 'config.h',
+		      configuration: conf_data)
+
+executable('genkey', 'genkey.c', dependencies : [ sodium_deps ] )
+
+shared_library('exim-encrypt-dlfunc', 'libexim-encrypt-dlfunc.c',
+				      dependencies : [ sodium_deps ],
+				      install: true)		      
+
+
+simple_exim_test = find_program('simple_exim_test.sh')
+test('simple test', simple_exim_test)
+

src/simple_exim_test.sh

@@ -2,8 +2,10 @@
 
 set -e
 
+PATH=/sbin:/usr/sbin:$PATH
+
 # copy to /tmp to keep call to exim under 256 chars (prevent problems on Ubuntu)
-install -t /tmp libexim-encrypt-dlfunc.so
+install -t /tmp src/libexim-encrypt-dlfunc.so
 
 LIB=/tmp/libexim-encrypt-dlfunc.so
 CLEARTEXT="127.88.99.23" # keep short; see above