Detect OpenMP properly.

src/CMakeLists.txt

@@ -111,6 +111,15 @@ ELSE(OPENEXR_FOUND)
 	MESSAGE(STATUS "Looking for OpenEXR - not found")
 ENDIF(OPENEXR_FOUND)
 
+# OpenMP
+INCLUDE(FindOpenMP)
+IF(OPENMP_FOUND)
+	SET(HAVE_OPENMP ${OPENMP_FOUND} CACHE BOOL "Set to TRUE if OpenMP is found, FALSE otherwise")
+	MESSAGE(STATUS "Looking for OpenMP - found")
+ELSE(OPENMP_FOUND)
+	MESSAGE(STATUS "Looking for OpenMP - not found")
+ENDIF(OPENMP_FOUND)
+	
 # Qt
 FIND_PACKAGE(Qt4)
 

src/nvconfig.h.in

@@ -7,6 +7,8 @@
 #cmakedefine HAVE_EXECINFO_H
 #cmakedefine HAVE_MALLOC_H
 
+#cmakedefine HAVE_OPENMP
+
 #cmakedefine HAVE_PNG
 #cmakedefine HAVE_JPEG
 #cmakedefine HAVE_TIFF

src/nvtt/CompressDXT.cpp

@@ -71,9 +71,10 @@ typedef ULONG_PTR DWORD_PTR;
 #include "stb/stb_dxt.h"
 #endif
 
-#pragma message(NV_FILE_LINE "FIXME: Define HAVE_OPENMP from cmake.")
-#define HAVE_OPENMP
+// OpenMP
+#if defined (HAVE_OPENMP)
 #include <omp.h>
+#endif
 
 using namespace nv;
 using namespace nvtt;