cmake HAVE_TMPNAM examples

InsightSoftwareConsortium/ITK Modules/ThirdParty/MINC/src/libminc/CMakeLists.txt :127 

CHECK_FUNCTION_EXISTS(tmpnam   HAVE_TMPNAM)

gccxml/gccxml GCC/config_cmake/CMakeLists.txt :243 

CHECK_FUNCTION_EXISTS(tmpnam HAVE_TMPNAM)