configure: generate version.h

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Makefile.am

 ACLOCAL_AMFLAGS = -Im4
 
-AM_CPPFLAGS = -I$(top_srcdir)/src $(CSS_CFLAGS)
+AM_CPPFLAGS = -I$(top_srcdir)/src -I$(top_builddir)/src/dvdread $(CSS_CFLAGS)
 
 dist_doc_DATA = AUTHORS ChangeLog COPYING NEWS README TODO
 
@@ -46,7 +46,8 @@ pkginclude_HEADERS = \
 	src/dvdread/ifo_types.h \
 	src/dvdread/nav_print.h \
 	src/dvdread/nav_read.h \
-	src/dvdread/nav_types.h
+	src/dvdread/nav_types.h \
+	src/dvdread/version.h
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = misc/dvdread.pc

configure.ac

-AC_INIT(libdvdread, 5.0.4)
+dnl library version number
+m4_define([dvdread_major], 5)
+m4_define([dvdread_minor], 0)
+m4_define([dvdread_micro], 3)
+m4_define([dvdread_version],[dvdread_major.dvdread_minor.dvdread_micro])
+
+AC_INIT(libdvdread, dvdread_version)
+
 AC_CONFIG_SRCDIR([src/dvd_reader.c])
 
 AC_PREREQ(2.53)
@@ -105,6 +112,14 @@ AS_IF([test "x$ac_cv_c_compiler_gnu" = "xyes"], [
   AC_DEFINE([UNUSED], [], [Unused parameter annotation])
 ])
 
+dnl export library version number
+DVDREAD_VERSION_MAJOR=dvdread_major()
+DVDREAD_VERSION_MINOR=dvdread_minor()
+DVDREAD_VERSION_MICRO=dvdread_micro()
+AC_SUBST(DVDREAD_VERSION_MAJOR)
+AC_SUBST(DVDREAD_VERSION_MINOR)
+AC_SUBST(DVDREAD_VERSION_MICRO)
+
 dnl ---------------------------------------------
 dnl Output configuration files
 dnl ---------------------------------------------
@@ -112,4 +127,5 @@ AC_OUTPUT([
 Makefile
 doc/doxygen.cfg
 misc/dvdread.pc
+src/dvdread/version.h
 ])

src/dvdread/dvd_reader.h

@@ -43,7 +43,7 @@
 /**
  * The current version.
  */
-#define DVDREAD_VERSION 50400
+#include "version.h"
 
 /**
  * The length of one Logical Block of a DVD.

src/dvdread/version.h.in

+/*
+ * This file is part of libdvdread
+ * Copyright (C) 2015 VideoLAN
+ *
+ * This file 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.
+ *
+ * This file 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 library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef DVDREAD_VERSION_H_
+#define DVDREAD_VERSION_H_
+
+#define DVDREAD_VERSION_CODE(major, minor, micro) \
+    (((major) * 10000) +                         \
+     ((minor) *   100) +                         \
+     ((micro) *     1))
+
+#define DVDREAD_VERSION_MAJOR @DVDREAD_VERSION_MAJOR@
+#define DVDREAD_VERSION_MINOR @DVDREAD_VERSION_MINOR@
+#define DVDREAD_VERSION_MICRO @DVDREAD_VERSION_MICRO@
+
+#define DVDREAD_VERSION_STRING "@DVDREAD_VERSION_MAJOR@.@DVDREAD_VERSION_MINOR@.@DVDREAD_VERSION_MICRO@"
+
+#define DVDREAD_VERSION \
+    DVDREAD_VERSION_CODE(DVDREAD_VERSION_MAJOR, DVDREAD_VERSION_MINOR, DVDREAD_VERSION_MICRO)
+
+#endif /* DVDREAD_VERSION_H_ */