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-rw-r--r--Utilities/cmzlib/gzread.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Utilities/cmzlib/gzread.c b/Utilities/cmzlib/gzread.c
index 884c9bfe4c..22052dd7ed 100644
--- a/Utilities/cmzlib/gzread.c
+++ b/Utilities/cmzlib/gzread.c
@@ -441,6 +441,8 @@ z_size_t ZEXPORT gzfread(buf, size, nitems, file)
/* -- see zlib.h -- */
#ifdef Z_PREFIX_SET
# undef z_gzgetc
+#elif 1 /* Hook for mangling inside CMake. */
+# undef cm_zlib_gzgetc
#else
# undef gzgetc
#endif