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Commit e3e23f7746977 breaks build with openexr
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Blender Version
Broken: rBe3e23f774697782424647d8a12792dbc768501ad
Worked: rB83c9109926677b6b6a75ccb36ae0017733e8c8a2

Short description of error
Commit rBe3e23f77 causes BLI_Math_base.h to be included before openexr headers when compiling openexr_api.cpp which leads to the BLI_Math_base.h acosf() macro conflicting with ::acosf()

In file included from /home/shane/Projects/blender-bits/blender-trunk/blender/source/blender/imbuf/intern/openexr/openexr_api.cpp:85:
In file included from /usr/local/include/OpenEXR/ImathBox.h:65:
In file included from /usr/local/include/OpenEXR/ImathVec.h:48:
/usr/local/include/OpenEXR/ImathMath.h:127:45: error: expected unqualified-id
   static float acos  (float x)                 {return ::acosf (x);}   
/home/shane/Projects/blender-bits/blender-trunk/blender/source/blender/blenlib/BLI_math_base.h:108:19: note: expanded from macro 'acosf'
#define acosf(a) ((float)acos(a))

Moving #include "IMB_colormanagement.h" to after the openexr headers and keeping within an extern "C" resolves this for me.

diff --git a/source/blender/imbuf/intern/openexr/openexr_api.cpp b/source/blender/imbuf/intern/openexr/openexr_api.cpp
index ecef621..d4b4882 100644
--- a/source/blender/imbuf/intern/openexr/openexr_api.cpp
+++ b/source/blender/imbuf/intern/openexr/openexr_api.cpp
@@ -71,9 +71,6 @@ _CRTIMP void __cdecl _invalid_parameter_noinfo(void)
 #include "IMB_allocimbuf.h"
 #include "IMB_metadata.h"
-#include "IMB_colormanagement.h"
-#include "IMB_colormanagement_intern.h"
 #include "openexr_multi.h"
@@ -104,6 +101,13 @@ _CRTIMP void __cdecl _invalid_parameter_noinfo(void)
 #include <ImfPartType.h>
 #include <ImfPartHelper.h>
+extern "C"
+/* including these before <Imf*> breaks compile with conflicting acosf() definitions */
+#include "IMB_colormanagement.h"
+#include "IMB_colormanagement_intern.h"
 using namespace Imf;
 using namespace Imath;



Event Timeline

Shane Ambler (sambler) set Type to Bug.
Shane Ambler (sambler) created this task.
Shane Ambler (sambler) raised the priority of this task from to Needs Triage by Developer.

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Compile or build issues, ask on #blendercoders or mail bf-committers

Sergey Sharybin (sergey) closed this task as Resolved.Jan 26 2016, 10:00 AM

Committed the change now.