X-Git-Url: https://git.sur5r.net/?p=iec16022;a=blobdiff_plain;f=configure.ac;fp=configure.ac;h=33506e00efb7138bcb40ed5399a461a65c63aa6e;hp=0cdde4c087f5ea8a877f884263f011f53273b4bd;hb=8a7a280904ab4b38b1a21ce9e7496dadb2a6c049;hpb=671a86f30fc0e61cfe01a41a064b6851c7d9a18d

diff --git a/configure.ac b/configure.ac
index 0cdde4c..33506e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,9 +1,35 @@
-AC_INIT(iec16022, 0.2.3, stefan@datenfreihafen.org)
+AC_INIT(iec16022, 0.2.4, stefan@datenfreihafen.org)
 AM_INIT_AUTOMAKE([subdir-objects])
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AM_MAINTAINER_MODE
 
 AM_CONFIG_HEADER(config.h)
 
+
+dnl
+dnl LIB API versioning
+dnl
+dnl From the libtool manual:
+dnl 1. Start with version information of `0:0:0' for each libtool library.
+dnl 2. Update the version information only immediately before a public release.
+dnl    More frequent updates are unnecessary, and only guarantee that the current
+dnl    interface number gets larger faster.
+dnl 3. If the library source code has changed at all since the last update, then increment
+dnl    revision (`c:r:a' becomes `c:r+1:a').
+dnl 4. If any interfaces have been added, removed, or changed since the last update,
+dnl    increment current, and set revision to 0.
+dnl 5. If any interfaces have been added since the last public release, then increment age.
+dnl 6. If any interfaces have been removed since the last public release, then set age
+dnl    to 0.
+LT_VERSION_C=0
+LT_VERSION_R=0
+LT_VERSION_A=0
+
+AC_SUBST(LT_VERSION_C)
+AC_SUBST(LT_VERSION_R)
+AC_SUBST(LT_VERSION_A)
+
+
 dnl
 dnl Require programs
 dnl
@@ -22,11 +48,12 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 dnl
 AC_HEADER_TIME
 
-AC_CHECK_LIB([popt], [main])
-AC_CHECK_LIB([z], [main])
+AC_CHECK_LIB([popt], [main],,AC_MSG_ERROR([Missing library: popt not found.]))
+AC_CHECK_LIB([z], [main],,AC_MSG_ERROR([Missing library: zlib not found.]))
 
 dnl Output the files
 AC_OUTPUT([
 Makefile
 test/Makefile
+libiec16022.pc
 ])