Temporary build fix for OpenEXR.

* It seems hex floats are not allowed in C++.
* I will fix this more cleanly, but it needs another rebuild of the gcc2
package. Until then, this lets haiku compile.

src/add-ons/translators/exr/openexr/imath/ImathLimits.h

@@ -46,6 +46,10 @@
 #include <float.h>
 #undef LDBL_EPSILON
 #define LDBL_EPSILON 2.2204460492503131e-16L
+#undef LDBL_MAX
+#undef LDBL_MIN
+extern "C" long double LDBL_MAX;
+extern "C" long double LDBL_MIN;
 #include <limits.h>
 
 //------------------------------------------

src/add-ons/translators/exr/openexr/imath/Jamfile

@@ -19,6 +19,7 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 			ImathRandom.cpp
 			ImathShear.cpp
 			ImathVec.cpp
+			gcc2fix.c
 			;
 	}
 }

src/add-ons/translators/exr/openexr/imath/gcc2fix.c

@@ -0,0 +1,3 @@
+// C++ doesn't handle hex floats properly...
+long double LDBL_MAX = 0xfffffffffffffffp16320l;
+long double LDBL_MIN = 0x1p-16382l;