X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=internals%2F_PDCLIB_aux.h;h=484e930f24618c24fbee7dc563835e441ceeed35;hp=8c4e897003e7e25c13f58c26bd3af274fa4d164f;hb=5af6a81428deb4542b01eed33f450057c7fa89c2;hpb=b6d270371b520e0a85075d8bf84c10c53d9b30bf

diff --git a/internals/_PDCLIB_aux.h b/internals/_PDCLIB_aux.h
index 8c4e897..484e930 100644
--- a/internals/_PDCLIB_aux.h
+++ b/internals/_PDCLIB_aux.h
@@ -1,6 +1,5 @@
-/* $Id$ */
-
-/* Release $Name$ */
+#ifndef __PDCLIB_AUX_H
+#define __PDCLIB_AUX_H __PDCLIB_AUX_H
 
 /* Auxiliary PDCLib code <_PDCLIB_aux.h>
 
@@ -8,6 +7,11 @@
    Permission is granted to use, modify, and / or redistribute at will.
 */
 
+/* -------------------------------------------------------------------------- */
+/* You should not have to edit anything in this file; if you DO have to, it   */
+/* would be considered a bug / missing feature: notify the author(s).         */
+/* -------------------------------------------------------------------------- */
+
 /* -------------------------------------------------------------------------- */
 /* Standard Version                                                           */
 /* -------------------------------------------------------------------------- */
@@ -18,37 +22,229 @@
 #error Compiler does not define _ _STDC_ _ to 1 (not standard-compliant)!
 #endif
 
-#ifndef __STDC_VERSION__
-#define _PDCLIB_C_VERSION 90
-#define _PDCLIB_restrict
-#define _PDCLIB_inline
+#if defined(_PDCLIB_C_VERSION)
+    /* Pass - conditional simplification case */
+#elif !defined(__STDC_VERSION__)
+    #define _PDCLIB_C_VERSION 1990
 #elif __STDC_VERSION__ == 199409L
-#define _PDCLIB_C_VERSION 95
-#define _PDCLIB_restrict
-#define _PDCLIB_inline
+    #define _PDCLIB_C_VERSION 1995
 #elif __STDC_VERSION__ == 199901L
-#define _PDCLIB_C_VERSION 99
-#define _PDCLIB_restrict restrict
-#define _PDCLIB_inline inline
+    #define _PDCLIB_C_VERSION 1999
+#elif __STDC_VERSION__ == 201112L
+    #define _PDCLIB_C_VERSION 2011
+#else
+    #error Unsupported _ _STDC_VERSION_ _ (__STDC_VERSION__) (supported: ISO/IEC 9899:1990, 9899/AMD1:1995, 9899:1999, 9899:2011).
+#endif
+
+#if !defined(__cplusplus) || defined(_PDCLIB_CXX_VERSION)
+   #define _PDCLIB_CXX_VERSION 0
+#elif __cplusplus == 201103L
+    #define _PDCLIB_CXX_VERSION 2011
+    /* TODO: Do we want this? */
+    #if _PDCLIB_C_VERSION < 2011
+        #undef _PDCLIB_C_VERSION
+        #define _PDCLIB_C_VERSION 2011
+    #endif
+#elif __cplusplus == 199711L
+   #define _PDCLIB_CXX_VERSION 1997
 #else
-#error Unsupported _ _STDC_VERSION_ _ (__STDC_VERSION__) (supported: ISO/IEC 9899:1990, 9899/AMD1:1995, and 9899:1999).
+   #error Unsupported _ _cplusplus (__cplusplus) (supported: ISO/IEC 14882:1997, ISO/IEC 14882:2011).
 #endif
 
 #ifndef __STDC_HOSTED__
-#warning Compiler does not define _ _STDC_HOSTED_ _ (not standard-compliant)!
+    #error Compiler does not define _ _STDC_HOSTED_ _ (not standard-compliant)!
 #elif __STDC_HOSTED__ == 0
-#define _PDCLIB_HOSTED 0
+    #define _PDCLIB_HOSTED 0
 #elif __STDC_HOSTED__ == 1
-#define _PDCLIB_HOSTED 1
+    #define _PDCLIB_HOSTED 1
+#else
+    #error Compiler does not define _ _STDC_HOSTED_ _ to 0 or 1 (not standard-compliant)!
+#endif
+
+#ifdef __cplusplus
+    #define _PDCLIB_BEGIN_EXTERN_C extern "C" {
+    #define _PDCLIB_END_EXTERN_C }
+    typedef bool _PDCLIB_bool;
+#else
+    #define _PDCLIB_BEGIN_EXTERN_C
+    #define _PDCLIB_END_EXTERN_C
+    typedef _Bool _PDCLIB_bool;
+#endif
+
+/* Clang style feature detection macros
+ * Note: It is common to #define __has_feature(0) if undefined so the presence
+ * of this macro does not guarantee it to be working
+ */
+
+#ifdef __has_feature
+   #define _PDCLIB_HAS_FEATURE(x) __has_feature(x)
+#else
+   #define _PDCLIB_HAS_FEATURE(x) (0)
+#endif
+
+#ifdef __has_extension
+   #define _PDCLIB_HAS_EXTENSION(x) __has_extension(x)
+#else
+   // Older versions of Clang use __has_feature instead
+   #define _PDCLIB_HAS_EXTENSION(x) _PDCLIB_HAS_FEATURE(x)
+#endif
+
+#ifdef __has_builtin
+   #define _PDCLIB_HAS_BUILTIN(x) __has_builtin(x)
+#else
+   #define _PDCLIB_HAS_BUILTIN(x) (0)
+#endif
+
+#ifdef __has_attribute
+   #define _PDCLIB_HAS_ATTRIBUTE(x) __has_attribute(x)
+#else
+   #define _PDCLIB_HAS_ATTRIBUTE(x) (0)
+#endif
+
+/* GCC feature detection macros */
+
+#if defined(__GNUC__)
+    #define _PDCLIB_GCC_MIN(maj, min) \
+        ((__GNUC__ > maj) || (__GNUC__ == maj && __GNUC_MINOR__ >= min))
+#else
+    #define _PDCLIB_GCC_MIN(maj, min) (0)
+#endif
+
+/* Hybrid GCC/Clang feature detection macros */
+#define _PDCLIB_GCC_FEATURE(x, gccmaj, gccmin) \
+        (_PDCLIB_HAS_FEATURE(x) || _PDCLIB_GCC_MIN(gccmin, gccmaj))
+
+#define _PDCLIB_GCC_EXTENSION(x, gccmaj, gccmin) \
+        (_PDCLIB_HAS_EXTENSION(x) || _PDCLIB_GCC_MIN(gccmin, gccmaj))
+
+#define _PDCLIB_GCC_BUILTIN(x, gccmaj, gccmin) \
+        (_PDCLIB_HAS_BUILTIN(x) || _PDCLIB_GCC_MIN(gccmin, gccmaj))
+
+#define _PDCLIB_GCC_ATTRIBUTE(x, gccmaj, gccmin) \
+        (_PDCLIB_HAS_ATTRIBUTE(x) || _PDCLIB_GCC_MIN(gccmin, gccmaj))
+
+/* Extension & Language feature detection */
+
+#if _PDCLIB_C_VERSION >= 1999 || defined(__cplusplus)
+    #ifndef __cplusplus
+        #define _PDCLIB_restrict restrict
+    #endif
+    #define _PDCLIB_inline   inline
+#endif
+
+#if _PDCLIB_CXX_VERSION >= 2011
+  #define _PDCLIB_nothrow     noexcept
+  #define _PDCLIB_noexcept(x) noexcept(x)
+#elif _PDCLIB_CXX_VERSION
+  #define _PDCLIB_nothrow     throw()
+  #define _PDCLIB_noexcept
+#endif
+
+#if _PDCLIB_CXX_VERSION >= 2011 && _PDCLIB_GCC_FEATURE(cxx_attributes, 4, 8)
+    #define _PDCLIB_noreturn [[noreturn]]
+#elif _PDCLIB_C_VERSION >= 2011 && _PDCLIB_GCC_FEATURE(c_noreturn, 4, 7)
+    #define _PDCLIB_noreturn _Noreturn
+#endif
+
+#ifdef _WIN32
+   #define _PDCLIB_EXPORT __declspec(dllexport)
+   #define _PDCLIB_IMPORT __declspec(dllimport)
+#endif
+
+#if !defined(_PDCLIB_EXPORT) && _PDCLIB_GCC_ATTRIBUTE(__visibility__, 4, 0)
+    #define _PDCLIB_EXPORT __attribute__((__visibility__("protected")))
+#endif
+
+#if !defined(_PDCLIB_HIDDEN) && _PDCLIB_GCC_ATTRIBUTE(__visibility__, 4, 0)
+    #define _PDCLIB_HIDDEN __attribute__((__visibility__("hidden")))
+#endif
+
+#if !defined(_PDCLIB_nothrow) && _PDCLIB_GCC_ATTRIBUTE(__nothrow__, 4, 0)
+    #define _PDCLIB_nothrow __attribute__((__nothrow__))
+    #define _PDCLIB_noexcept
+#endif
+
+#if !defined(_PDCLIB_restrict) && _PDCLIB_GCC_MIN(3, 0)
+    #define _PDCLIB_restrict __restrict
+#endif
+
+#if !defined(_PDCLIB_inline) && _PDCLIB_GCC_MIN(3, 0)
+    #define _PDCLIB_inline __inline
+#endif
+
+#if !defined(_PDCLIB_noreturn) && _PDCLIB_GCC_ATTRIBUTE(__noreturn__, 3, 0)
+    /* If you don't use __noreturn__, then stdnoreturn.h will break things! */
+    #define _PDCLIB_noreturn __attribute__((__noreturn__))
+#endif
+
+#if !defined(_PDCLIB_DEPRECATED) && _PDCLIB_GCC_ATTRIBUTE(__deprecated__, 3, 0)
+    #define _PDCLIB_DEPRECATED __attribute__ ((__deprecated__))
+#endif
+
+#if !defined(_PDCLIB_UNREACHABLE) && _PDCLIB_GCC_BUILTIN(__builtin_unreachable, 4, 0)
+    #define _PDCLIB_UNREACHABLE __builtin_unreachable()
+#endif
+
+#if !defined(_PDCLIB_UNDEFINED) && defined(__GNUC__)
+    #define _PDCLIB_UNDEFINED(_var) \
+        do { __asm__("" : "=X"(_var)); } while(0)
+#endif
+
+/* No-op fallbacks */
+
+#ifndef _PDCLIB_nothrow
+  #define _PDCLIB_nothrow
+  #define _PDCLIB_noexcept
+#endif
+
+#ifndef _PDCLIB_EXPORT
+    #define _PDCLIB_EXPORT
+#endif
+#ifndef _PDCLIB_IMPORT
+    #define _PDCLIB_IMPORT
+#endif
+#ifndef _PDCLIB_HIDDEN
+    #define _PDCLIB_HIDDEN
+#endif
+
+#if defined(_PDCLIB_SHARED) 
+    #if defined(_PDCLIB_BUILD)
+        #define _PDCLIB_API _PDCLIB_EXPORT
+    #else
+        #define _PDCLIB_API _PDCLIB_IMPORT
+    #endif
 #else
-#error Compiler does not define _ _STDC_HOSTED_ _ to 0 or 1 (not standard-compliant)!
+    #define _PDCLIB_API
+#endif
+
+#ifndef _PDCLIB_restrict
+      #define _PDCLIB_restrict
+#endif
+
+#ifndef _PDCLIB_inline
+      #define _PDCLIB_inline
+#endif
+
+#ifndef _PDCLIB_noreturn
+      #define _PDCLIB_noreturn
+#endif
+
+#ifndef _PDCLIB_DEPRECATED
+    #define _PDCLIB_DEPRECATED
+#endif
+
+#ifndef _PDCLIB_UNREACHABLE
+    #define _PDCLIB_UNREACHABLE do {} while(0)
 #endif
 
-#if _PDCLIB_C_VERSION != 99
-#warning Up to and including v1.x, PDCLib is only aiming at ISO/IEC 9899:1999 (C99).
-#warning PDCLib might not be fully conforming to either C89 or C95 prior to v2.x.
+#ifndef _PDCLIB_UNDEFINED
+    #define _PDCLIB_UNDEFINED(_var) do {} while(0)
 #endif
 
+/*#if _PDCLIB_C_VERSION != 1999
+#error PDCLib might not be fully conforming to either C89 or C95 prior to v2.x.
+#endif*/
+
 /* -------------------------------------------------------------------------- */
 /* Helper macros:                                                             */
 /* _PDCLIB_cc( x, y ) concatenates two preprocessor tokens without extending  */
@@ -57,7 +253,126 @@
 
 #define _PDCLIB_cc( x, y )     x ## y
 #define _PDCLIB_concat( x, y ) _PDCLIB_cc( x, y )
+#define _PDCLIB_concat3( x, y, z ) _PDCLIB_concat( _PDCLIB_concat( x, y ), z )
 
 #define _PDCLIB_symbol2value( x ) #x
 #define _PDCLIB_symbol2string( x ) _PDCLIB_symbol2value( x )
-#define _PDCLIB_symbol2identity( x ) x
+
+/* Feature test macros
+ *
+ * All of the feature test macros come in the following forms
+ *   _PDCLIB_*_MIN(min):            Available in versions >= min
+ *   _PDCLIB_*_MINMAX(min, max):    Available in versions >= min <= max
+ *   _PDCLIB_*_MAX(max):            Availabel in versions <= max
+ *
+ * The defined tests are:
+ *   C:     C standard versions 
+ *              1990, 1995, 1999, 2011
+ *   CXX:   C++ standard versions 
+ *              1997, 2011
+ *   POSIX: POSIX extension versions.
+ *              1 (POSIX.2), 2 (POSIX.2), 199309L (POSIX.1b), 
+ *              199506L (POSIX.1c), 200112L (2001), 200809L (2008)
+ *   XOPEN: X/Open System Interface (XSI)/Single Unix Specification
+ *              0 (XPG4), 500 (SUSv2/UNIX98), 600 (SUSv3/UNIX03), 700 (SUSv4)
+ *
+ *   Additionally, the macros
+ *     _BSD_SOURCE, _SVID_SOURCE and _GNU_SOURCE
+ *   are adhered to. If _GNU_SOURCE is defined, _XOPEN_SOURCE and 
+ *   _POSIX_C_SOURCE are defined to their most recent values to match glibc 
+ *   behaviour
+ *
+ *   The intention of supporting these feature test macros is to ease 
+ *   application portability from these systems to PDCLib systems; in addition,
+ *   it eases support for these standards by systems supporting them which are 
+ *   using PDCLib as their default C library.
+ *
+ *   Applications targetting purely PDClib/PDCLib based platforms may define 
+ *   just _PDCLIB_EXTENSIONS, which will enable all supported extensions, plus
+ *   all features from all supported versions of C and C++.
+ *
+ */
+#define _PDCLIB_C_MIN(min)         _PDCLIB_C_MINMAX(min, 3000)
+#define _PDCLIB_CXX_MIN(min)     _PDCLIB_CXX_MINMAX(min, 3000)
+#define _PDCLIB_XOPEN_MIN(min) _PDCLIB_XOPEN_MINMAX(min, 30000000)
+#define _PDCLIB_POSIX_MIN(min) _PDCLIB_POSIX_MINMAX(min, 30000000)
+#define _PDCLIB_C_MAX(max)         _PDCLIB_C_MINMAX(0, max)
+#define _PDCLIB_CXX_MAX(max)     _PDCLIB_CXX_MINMAX(0, max)
+#define _PDCLIB_XOPEN_MAX(max) _PDCLIB_XOPEN_MINMAX(0, max)
+#define _PDCLIB_POSIX_MAX(max) _PDCLIB_POSIX_MINMAX(0, max)
+#if defined(_PDCLIB_EXTENSIONS) || defined(_PDCLIB_BUILD)
+    #define _PDCLIB_C_MINMAX(min, max) 1
+    #define _PDCLIB_CXX_MINMAX(min, max) 1
+    #define _PDCLIB_POSIX_MINMAX(min, max) 1
+    #define _PDCLIB_XOPEN_MINMAX(min, max) 1
+
+    #undef _PDCLIB_EXTENSIONS
+    #undef _PDCLIB_BSD_SOURCE 
+    #undef _PDCLIB_SVID_SOURCE
+    #undef _PDCLIB_GNU_SOURCE
+
+    #define _PDCLIB_EXTENSIONS 1
+    #define _PDCLIB_BSD_SOURCE 1
+    #define _PDCLIB_SVID_SOURCE 1
+    #define _PDCLIB_GNU_SOURCE 1
+#else
+    #define _PDCLIB_C_MINMAX(min, max) \
+        (_PDCLIB_C_VERSION >= (min) && _PDCLIB_C_VERSION <= (max))
+    #define _PDCLIB_CXX_MINMAX(min, max) \
+        (_PDCLIB_CXX_VERSION >= (min) && _PDCLIB_CXX_VERSION <= (max))
+    #define _PDCLIB_XOPEN_MINMAX(min, max) \
+        (defined(_XOPEN_SOURCE) \
+            && _XOPEN_SOURCE >= (min) && _XOPEN_SOURCE <= (max))
+    #define _PDCLIB_POSIX_MINMAX(min, max) \
+        (defined(_POSIX_C_SOURCE) \
+            && _POSIX_C_SOURCE >= (min) && _POSIX_C_SOURCE <= (max))
+
+    #if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE-1 == -1)
+        /* If _XOPEN_SOURCE is defined as empty, redefine here as zero */
+        #undef _XOPEN_SOURCE
+        #define _XOPEN_SOURCE 0
+    #endif
+
+    #if defined(_GNU_SOURCE)
+        #define _PDCLIB_GNU_SOURCE 1
+        #define _PDCLIB_SVID_SOURCE 1
+        #define _PDCLIB_BSD_SOURCE 1
+        #undef _XOPEN_SOURCE
+        #define _XOPEN_SOURCE 700
+    #else
+        #define _PDCLIB_GNU_SOURCE 0
+    #endif
+
+    #if defined(_PDCLIB_BSD_SOURCE)
+        // pass
+    #elif defined(_BSD_SOURCE)
+        #define _PDCLIB_BSD_SOURCE 1
+    #else
+        #define _PDCLIB_BSD_SOURCE 0
+    #endif
+
+    #if defined(_PDCLIB_SVID_SOURCE)
+        // pass
+    #elif defined(_SVID_SOURCE)
+        #define _PDCLIB_SVID_SOURCE 1
+    #else
+        #define _PDCLIB_SVID_SOURCE 0
+    #endif
+
+    #if _PDCLIB_XOPEN_MIN(700) && !_PDCLIB_POSIX_MIN(200809L)
+        #undef _POSIX_C_SOURCE
+        #define _POSIX_C_SOURCE 2008098L    
+    #elif _PDCLIB_XOPEN_MIN(600) && !_PDCLIB_POSIX_MIN(200112L)
+        #undef _POSIX_C_SOURCE
+        #define _POSIX_C_SOURCE 200112L
+    #elif _PDCLIB_XOPEN_MIN(0) && !_PDCLIB_POSIX_MIN(2)
+        #undef _POSIX_C_SOURCE
+        #define _POSIX_C_SOURCE 2
+    #endif
+
+    #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
+        #define _POSIX_C_SOURCE 1
+    #endif
+#endif
+
+#endif