cmake HAVE_ATTRIBUTE_VISIBILITY_HIDDEN examples

HDFGroup/hdf5 config/cmake/ZLIBNG/CMakeLists.txt :479 

check_c_source_compiles(
    "#define Z_INTERNAL __attribute__((visibility (\"hidden\")))
    int Z_INTERNAL foo;
    int main() {
        return 0;
    }"
    HAVE_ATTRIBUTE_VISIBILITY_HIDDEN FAIL_REGEX "visibility")

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ZLIBNG/CMakeLists.txt :416 

check_c_source_compiles(
    "#define Z_INTERNAL __attribute__((visibility (\"hidden\")))
    int Z_INTERNAL foo;
    int main() {
        return 0;
    }"
    HAVE_ATTRIBUTE_VISIBILITY_HIDDEN FAIL_REGEX "visibility")

InsightSoftwareConsortium/ITK Modules/ThirdParty/ZLIB/src/itkzlib-ng/CMakeLists.txt :487 

check_c_source_compiles(
    "#define Z_INTERNAL __attribute__((visibility (\"hidden\")))
    int Z_INTERNAL foo;
    int main() {
        return 0;
    }"
    HAVE_ATTRIBUTE_VISIBILITY_HIDDEN FAIL_REGEX "visibility")