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-rw-r--r--src/gallium/auxiliary/util/u_math.h5
-rw-r--r--src/mesa/main/imports.h4
2 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 404bd21e1c5..f6196665f4f 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -340,6 +340,9 @@ util_is_inf_or_nan(float x)
* Find first bit set in word. Least significant bit is 1.
* Return 0 if no bits set.
*/
+#ifndef FFS_DEFINED
+#define FFS_DEFINED 1
+
#if defined(_MSC_VER) && _MSC_VER >= 1300 && (_M_IX86 || _M_AMD64 || _M_IA64)
unsigned char _BitScanForward(unsigned long* Index, unsigned long Mask);
#pragma intrinsic(_BitScanForward)
@@ -372,6 +375,8 @@ unsigned ffs( unsigned u )
#define ffs __builtin_ffs
#endif
+#endif /* FFS_DEFINED */
+
/* Destructively loop over all of the bits in a mask as in:
*
diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index bcf125ada76..ce7b45d7733 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -566,6 +566,9 @@ _mesa_inv_sqrtf(float x);
extern void
_mesa_init_sqrt_table(void);
+
+#ifndef FFS_DEFINED
+#define FFS_DEFINED 1
#ifdef __GNUC__
#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(ANDROID) || defined(__APPLE__)
@@ -579,6 +582,7 @@ extern int ffs(int i);
extern int ffsll(long long int i);
#endif /*__ GNUC__ */
+#endif /* FFS_DEFINED */
#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */