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-rw-r--r--src/glsl/glcpp/glcpp-lex.l4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 68e44eb7902..86618870885 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -34,6 +34,10 @@
int glcpp_get_column (yyscan_t yyscanner);
void glcpp_set_column (int column_no , yyscan_t yyscanner);
+#ifdef _MSC_VER
+#define YY_NO_UNISTD_H
+#endif
+
#define YY_NO_INPUT
#define YY_USER_ACTION \