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 ===========================================================================