Replace generic C wrapper with individual programs

* src/wrapper.c: Delete.
* src/crontab.c: New file.
* src/mcron.c: Likewise.
* src/cron.c: Likewise.
* configure.ac: Adapt 'AC_CONFIG_DIR' to use "src/mcron.c".
* Makefile.am (bin_crontab_SOURCES, bin_cron_SOURCES)
(bin_mcron_SOURCES): Use new files.
(bin_cron_CPPFLAGS, bin_mcron_CPPFLAGS, bin_crontab_CPPFLAGS): Delete.

1 files changed, 49 insertions, 0 deletions

diff --git a/src/mcron.c b/src/mcron.c
new file mode 100644
index 0000000..43afc72
--- /dev/null
+++ b/src/mcron.c
@@ -0,0 +1,49 @@
+/* mcron.c -- run jobs at scheduled times
+   Copyright © 2003, 2014 Dale Mellor <dale_mellor@users.sourceforge.net>
+   Copyright © 2015, 2016, 2017 Mathieu Lirzin <mthl@gnu.org>
+
+   This file is part of GNU Mcron.
+
+   GNU Mcron is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   GNU Mcron is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GNU Mcron.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "utils.h"
+#include <libguile.h>
+
+/* Forward declarations.  */
+static void inner_main (void *closure, int argc, char *argv[]);
+
+int
+main (int argc, char *argv[])
+{
+  /* Set Guile load paths to ensure that Mcron modules will be found after
+     installation.  In a build environment let the 'pre-inst-env' script set
+     the correct paths.  */
+  if (getenv ("MCRON_UNINSTALLED") == NULL)
+    {
+      wrap_env_path ("GUILE_LOAD_PATH", PACKAGE_LOAD_PATH);
+      wrap_env_path ("GUILE_LOAD_COMPILED_PATH", PACKAGE_LOAD_COMPILED_PATH);
+    }
+
+  scm_boot_guile (argc, argv, inner_main, NULL);
+
+  return EXIT_SUCCESS;
+}
+
+/* Launch the Mcron Guile main program.  */
+static void
+inner_main (void *closure, int argc, char *argv[])
+{
+  scm_set_current_module (scm_c_resolve_module ("mcron scripts mcron"));
+  scm_call_0 (scm_variable_ref (scm_c_lookup ("main")));
+}