Add version macros and check function.

* configure.ac (VERSION_NUMBER): New ac_subst.
(BUILD_FILEVERSION): Build on all platforms
(BUILD_TIMESTAMP): Try to use an ISO string.
* src/Makefile.am (extra-h.in): Add new version numbers.
* src/versioninfo.rc.in: Update copyright year.
* src/version.c: New.
(gpg_error_check_version): New API.
* src/gpg-error.h.in: Add gpg_error_check_version prototype.
* src/gpg-error.def.in: Add gpg_error_check_version
* tests/t-version.c: New.
* tests/Makefile.am (TESTS): Add t-version.c

* src/gpg-error-config.in: s/VERSION/PACKAGE_VERSION/.
--

All other GnuPG libraries do this, thus we do it here as well.

2 files changed, 104 insertions, 6 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index be63260..1a27f81 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,18 +1,18 @@
 # Makefile.am for libgpg-error/tests.
 # Copyright (C) 2003 g10 Code GmbH
-# 
+#
 # This file is part of libgpg-error.
-# 
+#
 # libgpg-error is free software; you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
 # published by the Free Software Foundation; either version 2.1 of the
 # License, or (at your option) any later version.
-# 
+#
 # libgpg-error 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 Lesser General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
@@ -22,11 +22,11 @@
 if HAVE_W32CE_SYSTEM
 extra_includes = -idirafter $(top_builddir)/src/gpg-extra
 else
-extra_includes = 
+extra_includes =
 endif
 
 
-TESTS = t-strerror t-syserror
+TESTS = t-version t-strerror t-syserror
 
 INCLUDES = -I$(top_builddir)/src $(extra_includes)
 
diff --git a/tests/t-version.c b/tests/t-version.c
new file mode 100644
index 0000000..d6c6399
--- /dev/null
+++ b/tests/t-version.c
@@ -0,0 +1,98 @@
+/* t-version.c - Check the version info function
+ * Copyright (C) 2013 g10 Code GmbH
+ *
+ * This file is part of libgpg-error.
+ *
+ * libgpg-error is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * libgpg-error 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "../src/gpg-error.h"
+
+static const char *logpfx = "";
+static int verbose;
+static int debug;
+static int errorcount;
+
+int
+main (int argc, char **argv)
+{
+  int last_argc = -1;
+
+  if (argc)
+    {
+      logpfx = *argv;
+      argc--; argv++;
+    }
+  while (argc && last_argc != argc )
+    {
+      last_argc = argc;
+      if (!strcmp (*argv, "--help"))
+        {
+          puts (
+"usage: ./version [options]\n"
+"\n"
+"Options:\n"
+"  --verbose      Show what is going on\n"
+);
+          exit (0);
+        }
+      if (!strcmp (*argv, "--verbose"))
+        {
+          verbose = 1;
+          argc--; argv++;
+        }
+      else if (!strcmp (*argv, "--debug"))
+        {
+          verbose = debug = 1;
+          argc--; argv++;
+        }
+    }
+
+  if (!gpg_error_check_version (GPG_ERROR_VERSION))
+    {
+      fprintf (stderr, "%s: gpg_error_check_version returned an error\n",
+               logpfx);
+      errorcount++;
+    }
+  if (!gpg_error_check_version ("1.10"))
+    {
+      fprintf (stderr, "%s: gpg_error_check_version returned an "
+               "error for an old version\n", logpfx);
+      errorcount++;
+    }
+  if (gpg_error_check_version ("15"))
+    {
+      fprintf (stderr, "gpg_error_check_version did not return an error"
+               " for a newer version\n", logpfx);
+      errorcount++;
+    }
+  if (verbose || errorcount)
+    {
+      printf ("Version from header: %s (0x%06x)\n",
+               GPG_ERROR_VERSION, GPG_ERROR_VERSION_NUMBER);
+      printf ("Version from binary: %s\n", gpg_error_check_version (NULL));
+      printf ("Copyright blurb ...:%s\n", gpg_error_check_version ("\x01\x01"));
+    }
+
+  return errorcount ? 1 : 0;
+}