X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=configure.in;h=cfdf0fc0fc22f0b30afc9a4fcf5570100573a0d0;hp=a846c91e0fe1974d6ecbbf08fefb2968a8574219;hb=15f428efcdf71665f99f2b08432c1566dda5835f;hpb=6b3768e8c544739ae53321539cb4d1e3112ded1b

diff --git a/configure.in b/configure.in
index a846c91e..cfdf0fc0 100644
--- a/configure.in
+++ b/configure.in
@@ -1,11 +1,50 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_INIT(ginac/basic.cpp)
-AM_CONFIG_HEADER(config.h)
 AC_PREREQ(2.12)
 
+dnl GiNaC version information
+dnl
+dnl Making releases:
+dnl   GINACLIB_MICRO_VERSION += 1;
+dnl   GINACLIB_INTERFACE_AGE += 1;
+dnl   GINACLIB_BINARY_AGE += 1;
+dnl if any functions have been added, set GINACLIB_INTERFACE_AGE to 0.
+dnl if backwards compatibility has been broken,
+dnl set GINACLIB_BINARY_AGE and GINACLIB_INTERFACE_AGE to 0.
+dnl
+dnl NOTE: these can't be renamed to GINAC_MAJOR_VERSION etc. because
+dnl autoconf sees "AC_MAJOR_VERSION" and complains about an undefined macro
+dnl (don't we all *love* autoconf?)...
+
+GINACLIB_MAJOR_VERSION=0
+GINACLIB_MINOR_VERSION=4
+GINACLIB_MICRO_VERSION=0
+GINACLIB_INTERFACE_AGE=0
+GINACLIB_BINARY_AGE=0
+GINACLIB_VERSION=$GINACLIB_MAJOR_VERSION.$GINACLIB_MINOR_VERSION.$GINACLIB_MICRO_VERSION
+
+AC_SUBST(GINACLIB_MAJOR_VERSION)
+AC_SUBST(GINACLIB_MINOR_VERSION)
+AC_SUBST(GINACLIB_MICRO_VERSION)
+AC_SUBST(GINACLIB_INTERFACE_AGE)
+AC_SUBST(GINACLIB_BINARY_AGE)
+AC_SUBST(GINACLIB_VERSION)
+
+dnl libtool versioning
+LT_RELEASE=$GINACLIB_MAJOR_VERSION.$GINACLIB_MINOR_VERSION
+LT_CURRENT=`expr $GINACLIB_MICRO_VERSION - $GINACLIB_INTERFACE_AGE`
+LT_REVISION=$GINACLIB_INTERFACE_AGE
+LT_AGE=`expr $GINACLIB_BINARY_AGE - $GINACLIB_INTERFACE_AGE`
+
+AC_SUBST(LT_RELEASE)
+AC_SUBST(LT_CURRENT)
+AC_SUBST(LT_REVISION)
+AC_SUBST(LT_AGE)
+
 dnl This defines PACKAGE and VERSION
-AM_INIT_AUTOMAKE([GiNaC], [0.4])
+AM_CONFIG_HEADER(config.h)
+AM_INIT_AUTOMAKE([GiNaC], $GINACLIB_VERSION)
 AM_MAINTAINER_MODE
 
 dnl ===========================================================================