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-rw-r--r--configure.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 2707aa2e4..0430e9722 100644
--- a/configure.ac
+++ b/configure.ac
@@ -684,6 +684,9 @@ case "$OPT_ZLIB" in
;;
esac
+dnl set variable for use in automakefile(s)
+AM_CONDITIONAL(HAVE_LIBZ, test x"$HAVE_LIBZ" = x1)
+
dnl Default is to try the thread-safe versions of a few functions
OPT_THREAD=on