cmake HAVE_FPCLASSIFY examples

LiangliangNan/MVStudio 3rd_party/nlopt/CMakeLists.txt :140 

try_compile (HAVE_FPCLASSIFY
  ${PROJECT_BINARY_DIR}/build_fpclassify
  ${PROJECT_BINARY_DIR}/fpclassify.c
  CMAKE_FLAGS -DLINK_LIBRARIES=m)

LiangliangNan/MVStudio 3rd_party/nlopt/CMakeLists.txt :144 

message(STATUS "Looking for fpclassify - ${HAVE_FPCLASSIFY}")

stevengj/nlopt CMakeLists.txt :118 

try_compile (HAVE_FPCLASSIFY
  ${PROJECT_BINARY_DIR}/build_fpclassify
  ${PROJECT_BINARY_DIR}/fpclassify.c
  CMAKE_FLAGS -DLINK_LIBRARIES=m)

stevengj/nlopt CMakeLists.txt :122 

message(STATUS "Looking for fpclassify - ${HAVE_FPCLASSIFY}")