Fixes compilation failure with MSVC since 0f3ba405.
---
src/mesa/main/imports.h | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index 81da510..4deca6a 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -145,6 +145,13 @@ static inline int isblank(int ch) { return ch == ' ' || ch
== '\t'; }
/*@}*/
+/*
+ * signbit() is a macro on Linux. Not available on Windows.
+ */
+#ifndef signbit
+#define signbit(x) ((x) < 0.0)
+#endif
+
/** single-precision inverse square root */
static inline float
--
1.7.3.4
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