From ff8daa013621019f1606dc0c188b16f1ce34fea7 Mon Sep 17 00:00:00 2001
From: Vinson Lee <vlee@freedesktop.org>
Date: Mon, 6 Apr 2020 18:21:54 -0700
Subject: [PATCH] gallivm: Add missing header for powf.
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Fix build error after llvm-11 commit 3a29393b4709 ("Remove
math.h/cmath include from DataTypes.h").

src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c: In function ‘lp_build_linear_to_srgb’:
src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c:194:44: error: implicit declaration of function ‘powf’ [-Werror=implicit-function-declaration]
  194 |                                  exp2f_c * powf(coeff_f, 1.0f / exp_f));
      |                                            ^~~~
src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c:194:44: warning: incompatible implicit declaration of built-in function ‘powf’
src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c:78:1: note: include ‘<math.h>’ or provide a declaration of ‘powf’
   77 | #include "lp_bld_format.h"
  +++ |+#include <math.h>
   78 |

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4473>
---
 src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c b/src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c
index d5cf698b060..5cd6ebe7149 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_format_srgb.c
@@ -68,6 +68,7 @@
 
 
 #include "util/u_debug.h"
+#include "util/u_math.h"
 
 #include "lp_bld_type.h"
 #include "lp_bld_const.h"
-- 
2.30.2