From: Vinson Lee <vlee@vmware.com>
Date: Sun, 15 Aug 2010 20:08:15 +0000 (-0700)
Subject: mesa: Check that _XOPEN_SOURCE is defined before using it.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a0b0afc6944b00df27145a96ad2727a36752e1d6;p=mesa.git

mesa: Check that _XOPEN_SOURCE is defined before using it.
---

diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index a439370bc4c..e967b147311 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -120,7 +120,7 @@ typedef union { GLfloat f; GLint i; } fi_type;
  * \name Work-arounds for platforms that lack C99 math functions
  */
 /*@{*/
-#if (_XOPEN_SOURCE < 600) && !defined(_ISOC99_SOURCE) \
+#if (defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE < 600)) && !defined(_ISOC99_SOURCE) \
    && (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L)) \
    && (!defined(_MSC_VER) || (_MSC_VER < 1400))
 #define acosf(f) ((float) acos(f))