portability: use -DGNULIB_POSIXCHECK.

[bison.git] / gnulib

diff --git a/gnulib b/gnulib
index 3ef64012bf653379fda629f5a6b619be4c1f2e69..3fd9a2df88c558b27be3a585ca2978dbf9b5da53 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 3ef64012bf653379fda629f5a6b619be4c1f2e69
+Subproject commit 3fd9a2df88c558b27be3a585ca2978dbf9b5da53