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-rw-r--r--configure.in1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 1219b9fb8a..f5dbff68cc 100644
--- a/configure.in
+++ b/configure.in
@@ -95,6 +95,7 @@ AC_ARG_WITH([headers],
 			    @<:@default=compiler default@:>@]),
 	    [sysheaders=$withval],
 	    [sysheaders=''])
+AC_SUBST(sysheaders)
 
 AC_SUBST(use_default_link)
 AC_ARG_WITH([default-link],