ENH: Generalize the check for sizeof void* to detect more ABI information.

1 files changed, 28 insertions, 0 deletions

diff --git a/Modules/CMakeCCompilerABI.c b/Modules/CMakeCCompilerABI.c
new file mode 100644
index 0000000000..f73e7fcc34
--- /dev/null
+++ b/Modules/CMakeCCompilerABI.c
@@ -0,0 +1,28 @@
+#ifdef __cplusplus
+# error "A C++ compiler has been selected for C."
+#endif
+
+#ifdef __CLASSIC_C__
+# define const
+#endif
+
+/*--------------------------------------------------------------------------*/
+
+#include "CMakeCompilerABI.h"
+
+/*--------------------------------------------------------------------------*/
+
+/* Make sure the information strings are referenced.  */
+#define REQUIRE(x) (&x[0] != &require)
+
+int main()
+{
+  const char require = 0;
+  return
+    (
+      REQUIRE(info_sizeof_dptr)
+#if defined(ABI_ID)
+      && REQUIRE(info_abi)
+#endif
+      );
+}