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Rewrite order in preprocessing if to simplify user code

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Patrick Pelissier committed 2023-06-11 23:32:02 +02:00
1 parent 6bb7a184db
commit 92bb380117
1 file changed
+18 -9
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m-core.h
+18 -9
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@@ -282,17 +282,26 @@ M_BEGIN_PROTECTED_CODE
use the "inline" semantic of the C99 and requests no inlining to the compiler.
Then it needs to define in at most one translation unit (M_USE_EXTERN_DEF) to define the functions.
This is only supported by GCC and CLANG.
Otherwise uses the classic "M_INLINE"
If M_USE_EXTERN_FINE_GRAINED, then uses a mechanism to decl or def the functions in function of M_USE_EXTERN_FINE_DECL / M_USE_EXTERN_FINE_DEF
Otherwise uses the classic "M_INLINE" (inline for C++ or static inline for C)
inline in C++ as a weak definition by default, which may reduce code size in executable.
*/
#if !defined( __cplusplus) && defined(__GNUC__) && defined(M_USE_EXTERN_DECL)
#define M_INLINE _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") __attribute__((weak, noinline))
#elif !defined( __cplusplus) && defined(__GNUC__) && defined(M_USE_EXTERN_DEF)
#define M_INLINE _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") __attribute__((noinline))
#elif !defined( __cplusplus) && defined(__GNUC__) && defined(M_USE_EXTERN_FINE_GRAINED)
#if !defined(__cplusplus) && defined(__GNUC__)
# define M_INLINE_PRAGMA _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"")
#else
# define M_INLINE_PRAGMA
#endif
#if defined(__GNUC__) && defined(M_USE_EXTERN_DEF)
#define M_INLINE M_INLINE_PRAGMA __attribute__((noinline)) extern
#elif defined(__GNUC__) && defined(M_USE_EXTERN_DECL)
#define M_INLINE M_INLINE_PRAGMA __attribute__((weak, noinline)) extern
#elif defined(__GNUC__) && defined(M_USE_EXTERN_FINE_GRAINED)
#define M_INLINE \
M_IF(M_EQUAL(M_USE_EXTERN_FINE_SELECT, 2))(_Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") __attribute__((weak, noinline)), \
M_IF(M_EQUAL(M_USE_EXTERN_FINE_SELECT, 3))(_Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") __attribute__((noinline)), \
static inline))
M_IF(M_EQUAL(M_USE_EXTERN_FINE_SELECT, 2))(M_INLINE_PRAGMA __attribute__((weak, noinline)) extern, \
M_IF(M_EQUAL(M_USE_EXTERN_FINE_SELECT, 3))(M_INLINE_PRAGMA __attribute__((noinline)) extern, \
static inline))
#elif defined(__cplusplus)
#define M_INLINE inline
#else
#define M_INLINE static inline
#endif