10 files changed, 4 insertions, 131 deletions
diff --git a/Source/Checks/cm_cxx_attribute_fallthrough.cxx b/Source/Checks/cm_cxx_attribute_fallthrough.cxx
deleted file mode 100644
index df43625..0000000
--- a/Source/Checks/cm_cxx_attribute_fallthrough.cxx
+++ /dev/null
@@ -1,11 +0,0 @@
-int main(int argc, char* argv[])
-{
-  int i = 3;
-  switch (argc) {
-    case 1:
-      i = 0;
-      __attribute__((fallthrough));
-    default:
-      return i;
-  }
-}
diff --git a/Source/Checks/cm_cxx_auto_ptr.cxx b/Source/Checks/cm_cxx_auto_ptr.cxx
deleted file mode 100644
index d3100fd..0000000
--- a/Source/Checks/cm_cxx_auto_ptr.cxx
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <memory>
-
-std::auto_ptr<int> get_auto_ptr()
-{
-  std::auto_ptr<int> ptr;
-  ptr = std::auto_ptr<int>(new int(0));
-  return ptr;
-}
-
-int use_auto_ptr(std::auto_ptr<int> ptr)
-{
-  return *ptr;
-}
-
-int main()
-{
-  return use_auto_ptr(get_auto_ptr());
-}
diff --git a/Source/Checks/cm_cxx_eq_delete.cxx b/Source/Checks/cm_cxx_eq_delete.cxx
deleted file mode 100644
index 809e4cf..0000000
--- a/Source/Checks/cm_cxx_eq_delete.cxx
+++ /dev/null
@@ -1,14 +0,0 @@
-struct Foo
-{
-  Foo() {}
-  ~Foo() {}
-  Foo(Foo const&) = delete;
-  Foo& operator=(Foo const&) = delete;
-  int test() const { return 0; }
-};
-
-int main()
-{
-  Foo const foo;
-  return foo.test();
-}
diff --git a/Source/Checks/cm_cxx_fallthrough.cxx b/Source/Checks/cm_cxx_fallthrough.cxx
deleted file mode 100644
index 7b35a5f..0000000
--- a/Source/Checks/cm_cxx_fallthrough.cxx
+++ /dev/null
@@ -1,11 +0,0 @@
-int main(int argc, char* argv[])
-{
-  int i = 3;
-  switch (argc) {
-    case 1:
-      i = 0;
-      [[fallthrough]];
-    default:
-      return i;
-  }
-}
diff --git a/Source/Checks/cm_cxx_features.cmake b/Source/Checks/cm_cxx_features.cmake
index 3b08025..2704c40 100644
--- a/Source/Checks/cm_cxx_features.cmake
+++ b/Source/Checks/cm_cxx_features.cmake
@@ -14,8 +14,11 @@ function(cm_check_cxx_feature name)
       CMAKE_FLAGS ${maybe_cxx_standard}
       OUTPUT_VARIABLE OUTPUT
       )
+    set(check_output "${OUTPUT}")
     # Filter out MSBuild output that looks like a warning.
-    string(REGEX REPLACE " +0 Warning\\(s\\)" "" check_output "${OUTPUT}")
+    string(REGEX REPLACE " +0 Warning\\(s\\)" "" check_output "${check_output}")
+    # Filter out warnings caused by user flags.
+    string(REGEX REPLACE "[^\n]*warning:[^\n]*-Winvalid-command-line-argument[^\n]*" "" check_output "${check_output}")
     # If using the feature causes warnings, treat it as broken/unavailable.
     if(check_output MATCHES "[Ww]arning")
       set(CMake_HAVE_CXX_${FEATURE} OFF CACHE INTERNAL "TRY_COMPILE" FORCE)
@@ -38,21 +41,8 @@ function(cm_check_cxx_feature name)
   endif()
 endfunction()
 
-cm_check_cxx_feature(auto_ptr)
-cm_check_cxx_feature(eq_delete)
-cm_check_cxx_feature(fallthrough)
-if(NOT CMake_HAVE_CXX_FALLTHROUGH)
-  cm_check_cxx_feature(gnu_fallthrough)
-  if(NOT CMake_HAVE_CXX_GNU_FALLTHROUGH)
-    cm_check_cxx_feature(attribute_fallthrough)
-  endif()
-endif()
 cm_check_cxx_feature(make_unique)
 if(CMake_HAVE_CXX_MAKE_UNIQUE)
   set(CMake_HAVE_CXX_UNIQUE_PTR 1)
 endif()
-cm_check_cxx_feature(nullptr)
-cm_check_cxx_feature(override)
 cm_check_cxx_feature(unique_ptr)
-cm_check_cxx_feature(unordered_map)
-cm_check_cxx_feature(unordered_set)
diff --git a/Source/Checks/cm_cxx_gnu_fallthrough.cxx b/Source/Checks/cm_cxx_gnu_fallthrough.cxx
deleted file mode 100644
index 6021094..0000000
--- a/Source/Checks/cm_cxx_gnu_fallthrough.cxx
+++ /dev/null
@@ -1,11 +0,0 @@
-int main(int argc, char* argv[])
-{
-  int i = 3;
-  switch (argc) {
-    case 1:
-      i = 0;
-      [[gnu::fallthrough]];
-    default:
-      return i;
-  }
-}
diff --git a/Source/Checks/cm_cxx_nullptr.cxx b/Source/Checks/cm_cxx_nullptr.cxx
deleted file mode 100644
index 500684a..0000000
--- a/Source/Checks/cm_cxx_nullptr.cxx
+++ /dev/null
@@ -1,14 +0,0 @@
-int test(int)
-{
-  return -1;
-}
-
-int test(int*)
-{
-  return 0;
-}
-
-int main()
-{
-  return test(nullptr);
-}
diff --git a/Source/Checks/cm_cxx_override.cxx b/Source/Checks/cm_cxx_override.cxx
deleted file mode 100644
index 5a33fbb..0000000
--- a/Source/Checks/cm_cxx_override.cxx
+++ /dev/null
@@ -1,24 +0,0 @@
-struct Foo
-{
-  Foo() {}
-  virtual ~Foo() {}
-  virtual int test() const = 0;
-};
-
-struct Bar : Foo
-{
-  Bar() {}
-  ~Bar() override {}
-  int test() const override { return 0; }
-};
-
-int test(Foo const& foo)
-{
-  return foo.test();
-}
-
-int main()
-{
-  Bar const bar;
-  return test(bar);
-}
diff --git a/Source/Checks/cm_cxx_unordered_map.cxx b/Source/Checks/cm_cxx_unordered_map.cxx
deleted file mode 100644
index be3de25..0000000
--- a/Source/Checks/cm_cxx_unordered_map.cxx
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <unordered_map>
-int main()
-{
-  std::unordered_map<int, int> map;
-  map[0] = 0;
-  return 0;
-}
diff --git a/Source/Checks/cm_cxx_unordered_set.cxx b/Source/Checks/cm_cxx_unordered_set.cxx
deleted file mode 100644
index de4bb77..0000000
--- a/Source/Checks/cm_cxx_unordered_set.cxx
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <unordered_set>
-int main()
-{
-  std::unordered_set<int> set;
-  set.insert(0);
-  return 0;
-}