Removed checks/workarounds for pre-C++89 compatibility (#449)

After 30+ years, just assume that the following exist:
- extension-less includes
- namespaces
- std::
- static_cast
- bool

2 files changed, 0 insertions, 61 deletions

diff --git a/config/cmake_ext_mod/HDFCXXTests.cpp b/config/cmake_ext_mod/HDFCXXTests.cpp
index f05151b..08ccb34 100644
--- a/config/cmake_ext_mod/HDFCXXTests.cpp
+++ b/config/cmake_ext_mod/HDFCXXTests.cpp
@@ -10,62 +10,6 @@
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-
-#include <iostream>
-
-int main(void) { return 0; }
-
-#endif
-
-
-#ifdef HDF_NO_NAMESPACE
-
-namespace HDF {
-int fnord;
-}
-
-int main(void) {
-   using namespace HDF;
-   fnord = 37;
-   return 0;
-}
-
-#endif
-
-#ifdef HDF_NO_STD
-
-#include <string>
-
-using namespace std;
-
-int main(void) {
-   string myString("testing namespace std");
-   return 0;
-}
-
-#endif
-
-#ifdef BOOL_NOTDEFINED
-int main(void) {
-   bool flag;
-   return 0;
-}
-
-#endif
-
-#ifdef NO_STATIC_CAST
-
-int main(void) {
-   float test_float;
-   int test_int;
-   test_float = 37.0;
-   test_int = static_cast <int> (test_float);
-   return 0;
-}
-
-#endif
-
 #ifdef CXX_HAVE_OFFSETOF
 
 #include <stdio.h>
diff --git a/config/cmake_ext_mod/HDFUseCXX.cmake b/config/cmake_ext_mod/HDFUseCXX.cmake
index 28e7f8a..580c409 100644
--- a/config/cmake_ext_mod/HDFUseCXX.cmake
+++ b/config/cmake_ext_mod/HDFUseCXX.cmake
@@ -103,11 +103,6 @@ endmacro ()
 #-----------------------------------------------------------------------------
 if (CMAKE_CXX_COMPILER_LOADED)
   foreach (cxx_test
-      OLD_HEADER_FILENAME
-      HDF_NO_NAMESPACE
-      HDF_NO_STD
-      BOOL_NOTDEFINED
-      NO_STATIC_CAST
       CXX_HAVE_OFFSETOF
   )
     HDF_CXX_FUNCTION_TEST (${cxx_test})