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-rw-r--r--configure.ac4
1 files changed, 3 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 336884d93..6f4ba1ca6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,7 +61,9 @@ GP_CONFIG_MSG([Source code location],[${srcdir}])
dnl ---------------------------------------------------------------------------
dnl Advanced information about versioning:
dnl * "Writing shared libraries" by Mike Hearn
-dnl http://navi.cx/~mike/writing-shared-libraries.html
+dnl https://web.archive.org/web/20070219014345/http://plan99.net/~mike/writing-shared-libraries.html
+dnl originally http://navi.cx/~mike/writing-shared-libraries.html
+dnl and later http://plan99.net/~mike/writing-shared-libraries.html
dnl * libtool.info chapter "Versioning"
dnl * libtool.info chapter "Updating library version information"
dnl ---------------------------------------------------------------------------