Add some checks to defs.h to ensure that the library isn't built as o…

…ld C, C++, or with disabled features
aaaaaa123456789 · Jan 14, 2022 · 056abb9 · 056abb9
1 parent a2ec4a0
commit 056abb9
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/src/defs.h b/src/defs.h
@@ -2,6 +2,14 @@
 
 #define PLUM_DEFS
 
+#if defined(PLUM_NO_STDINT) || defined(PLUM_NO_ANON_MEMBERS) || defined(PLUM_NO_VLA)
+  #error libplum feature-test macros must not be defined when compiling the library.
+#elif defined(__cplusplus)
+  #error libplum cannot be compiled with a C++ compiler.
+#elif __STDC_VERSION__ < 201710L
+  #error libplum requires C17 or later.
+#endif
+
 #ifdef noreturn
   #undef noreturn
 #endif

diff --git a/src/proto.h b/src/proto.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 #include <setjmp.h>
 
-#include "../header/libplum.h"
 #include "defs.h"
+#include "../header/libplum.h"
 #include "struct.h"
 
 #include "multibyte.h"