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RConfig.hxx
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1/* @(#)root/base:$Id$ */
2
3/*************************************************************************
4 * Copyright (C) 1995-2002, Rene Brun and Fons Rademakers. *
5 * All rights reserved. *
6 * *
7 * For the licensing terms see $ROOTSYS/LICENSE. *
8 * For the list of contributors see $ROOTSYS/README/CREDITS. *
9 *************************************************************************/
10
11#ifndef ROOT_RConfig
12#define ROOT_RConfig
13
14/*************************************************************************
15 * *
16 * RConfig *
17 * *
18 * Defines used by ROOT. *
19 * *
20 *************************************************************************/
21
22#include "../RVersion.h"
23#include "RConfigure.h"
24
25
26/*---- new C++ features ------------------------------------------------------*/
27
28#if defined __has_feature
29# if __has_feature(modules)
30# define R__CXXMODULES
31# endif
32#endif
33
34#define R__USE_SHADOW_CLASS
35
36/* Now required, thus defined by default for backward compatibility */
37#define R__ANSISTREAM /* ANSI C++ Standard Library conformant */
38#define R__SSTREAM /* use sstream or strstream header */
39
40#if defined(_MSC_VER)
41# if (_MSC_VER < 1910)
42# error "ROOT requires Visual Studio 2017 or higher."
43# else
44# define R__NULLPTR
45# endif
46#else
47# if defined(__cplusplus) && (__cplusplus < 201402L)
48# error "ROOT requires support for C++14 or higher."
49# if defined(__GNUC__) || defined(__clang__)
50# error "Pass `-std=c++14` as compiler argument."
51# endif
52# endif
53#endif
54
55/*---- machines --------------------------------------------------------------*/
56
57#ifdef __hpux
58 /* R__HPUX10 or R__HPUX11 is determined in the Makefile */
59# define R__HPUX
60# define R__UNIX
61# define ANSICPP
62# ifdef __LP64__
63# define R__B64
64# endif
65# ifdef R__HPUX10
66# define NEED_SNPRINTF
67# endif
68#endif
69
70#ifdef _AIX
71# define R__AIX
72# define R__UNIX
73# define ANSICPP
74# define R__SEEK64
75# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
76# define NEED_STRCASECMP
77#endif
78
79#if defined(__linux) || defined(__linux__)
80# ifndef linux
81# define linux
82# endif
83#endif
84
85#if defined(__CYGWIN__) && defined(__GNUC__)
86# ifndef linux
87# define linux
88# endif
89# ifndef R__WINGCC
90# define R__WINGCC
91# endif
92#endif
93
94#if defined(__sun) && !(defined(linux) || defined(__FCC_VERSION))
95# ifdef __SVR4
96# define R__SOLARIS
97# define R__SEEK64
98# define ANSICPP
99# ifdef __i386
100# define R__BYTESWAP
101# endif
102# ifdef __x86_64
103# define R__B64
104# define R__BYTESWAP
105# endif
106# else
107# define R__SUN
108# include <stdlib.h>
109# endif
110# define R__UNIX
111# define NEED_STRING
112# define NEED_SIGJMP
113# if __SUNPRO_CC > 0x420
114# define R__SOLARIS_CC50
115# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
116# endif
117# if __SUNPRO_CC >= 0x420
118# define R__SUNCCBUG /* to work around a compiler bug */
119# endif
120# if __GNUC__ >= 3 || __GNUC_MINOR__ >= 90 /* modern egcs/gcc */
121# define R__SUNGCC3
122# endif
123#endif
124
125#if defined(__FCC_VERSION) /* Solaris with Fujitsu compiler */
126# define R__SOLARIS
127# define R__SEEK64
128# define ANSICPP
129# define R__UNIX
130# define NEED_STRING
131# define NEED_SIGJMP
132#endif
133
134#if defined(linux)
135# ifndef _LARGEFILE64_SOURCE
136# define _LARGEFILE64_SOURCE
137# endif
138# include <features.h>
139# if __GNU_LIBRARY__ == 6
140# ifndef R__GLIBC
141# define R__GLIBC
142# endif
143# endif
144# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 2
145# define R__NONSCALARFPOS2
146# define R__USESTHROW
147# define R__SEEK64
148# endif
149#endif
150
151#if defined(linux) && defined(__i386__)
152# define R__LINUX
153# define R__UNIX
154# define R__BYTESWAP
155# ifndef __i486__
156# define __i486__ /* turn off if you really want to run on an i386 */
157# endif
158# define NEED_SIGJMP
159#endif
160
161#if defined(linux) && defined(__ia64__)
162# define R__LINUX
163# define R__UNIX
164# define R__BYTESWAP
165# define R__B64
166# define NEED_SIGJMP
167#endif
168
169#if defined(linux) && defined(__x86_64__)
170# define R__LINUX
171# define R__UNIX
172# define R__BYTESWAP
173# define R__B64
174# define NEED_SIGJMP
175#endif
176
177#if defined(linux) && defined(__arm__)
178# define R__LINUX
179# define R__UNIX
180# define R__BYTESWAP
181# define NEED_SIGJMP
182#endif
183
184#if defined(linux) && defined(__sparc__)
185# define R__LINUX
186# define R__UNIX
187# define NEED_SIGJMP
188/*# define R__B64 */ /* enable when 64 bit machine */
189#endif
190
191#if defined(linux) && defined(__hppa)
192# define R__LINUX
193# define R__UNIX
194# define NEED_SIGJMP
195#endif
196
197#if defined(linux) && defined(__powerpc__)
198# define R__LINUX
199# define R__UNIX
200# define NEED_SIGJMP
201# if defined(R__ppc64)
202# define R__B64
203# endif
204# if defined(_LITTLE_ENDIAN)
205# define R__BYTESWAP
206# endif
207#endif
208
209#if defined(linux) && defined(__aarch64__)
210# define R__LINUX
211# define R__UNIX
212# define R__BYTESWAP
213# define R__B64
214# define NEED_SIGJMP
215#endif
216
217#if defined(linux) && defined(__s390__)
218# define R__LINUX
219# define R__UNIX
220# define NEED_SIGJMP
221#endif
222
223#if defined(linux) && defined(__s390x__)
224# define R__LINUX
225# define R__UNIX
226# define R__B64
227# define NEED_SIGJMP
228#endif
229
230#if defined(__MACH__) && defined(__i386__) && !defined(__APPLE__)
231# define R__HURD
232# define f2cFortran /* cfortran.h does not know HURD - sigh */
233# define R__UNIX
234# define R__BYTESWAP
235# define R__GLIBC /* GNU/Hurd always use GLIBC 2.x :-) */
236# define NEED_SIGJMP
237#endif
238
239#if defined(__Lynx__) && defined(__powerpc__)
240# define R__LYNXOS
241# define R__UNIX
242# define ANSICPP
243# define NEED_SIGJMP
244# define NEED_STRCASECMP
245# define NEED_SNPRINTF
246#endif
247
248#if defined(__FreeBSD__)
249# define R__FBSD
250# define R__UNIX
251# define R__BYTESWAP
252# if defined(__i386__)
253# ifndef __i486__
254# define __i486__ /* turn off if you really want to run on an i386 */
255# endif
256# endif
257# if defined(__amd64__)
258# define R__B64
259# endif
260# define HAS_STRLCPY
261#endif
262
263#if defined(__OpenBSD__)
264# define R__OBSD
265# define R__UNIX
266# define R__BYTESWAP
267# if defined(__i386__)
268# ifndef __i486__
269# define __i486__ /* turn off if you really want to run on an i386 */
270# endif
271# endif
272# if defined(__amd64__)
273# define R__B64
274# endif
275# define HAS_STRLCPY
276#endif
277
278#if defined(__APPLE__) /* MacOS X support, initially following FreeBSD */
279# include <AvailabilityMacros.h>
280# ifndef __CINT__
281# include <TargetConditionals.h>
282# endif
283# define R__MACOSX
284# define R__UNIX
285# if defined(__xlC__) || defined(__xlc__)
286# define ANSICPP
287# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
288# endif
289# if defined(__ppc64__)
290# define R__B64 /* enable when 64 bit machine */
291# endif
292# if defined(__i386__)
293# define R__BYTESWAP
294# endif
295# if defined(__x86_64__)
296# define R__BYTESWAP
297# define R__B64 /* enable when 64 bit machine */
298# endif
299# if defined(__arm__)
300# define R__BYTESWAP
301# endif
302# if defined (__arm64__)
303# define R__BYTESWAP
304# define R__B64 /* enable when 64 bit machine */
305# endif
306# define HAS_STRLCPY
307#endif
308
309#ifdef _HIUX_SOURCE
310# define R__HIUX
311# define R__UNIX
312# define NEED_SIGJMP
313# define NEED_SNPRINTF
314# define ANSICPP
315#endif
316
317#ifdef __GNUC__
318# define R__GNU
319# define ANSICPP
320# if __GNUC__ >= 3 || __GNUC_MINOR__ >= 90 /* egcs 1.0.3 */
321# define R__VECNEWDELETE /* supports overloading of new[] and delete[] */
322# define R__PLACEMENTDELETE /* supports overloading placement delete */
323# endif
324# if __GNUC__ >= 3 || ( __GNUC__ == 2 && __GNUC_MINOR__ >= 95)
325# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
326# endif
327# if defined(__ia64__) && __GNUC__ < 3 /* gcc 2.9x (MINOR is 9!) */
328# define R__VECNEWDELETE /* supports overloading of new[] and delete[] */
329# define R__PLACEMENTDELETE /* supports overloading placement delete */
330# endif
331# if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ > 1)
332# define R__PRAGMA_DIAGNOSTIC
333# endif
334# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
335# define R__BYTESWAP
336# endif
337#endif
338
339#if defined(R__MACOSX) && !defined(MAC_OS_X_VERSION_10_12)
340 // At least on 10.11, the compiler defines but the c++ library does not provide the size operator delete.
341 // See for example https://llvm.org/bugs/show_bug.cgi?id=22951 or
342 // https://github.com/gperftools/gperftools/issues/794.
343#elif !defined(__GNUC__)
344# define R__SIZEDDELETE
345#elif __GNUC__ > 4
346# define R__SIZEDDELETE
347#endif
348
349/* allows symbols to be hidden from the shared library export symbol table */
350/* use typically on file statics and private methods */
351#if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3))
352# define R__HIDDEN __attribute__((__visibility__("hidden")))
353#else
354# define R__HIDDEN
355#endif
356
357#ifdef __INTEL_COMPILER
358# define R__INTEL_COMPILER
359# define R__VECNEWDELETE /* supports overloading of new[] and delete[] */
360# define R__PLACEMENTDELETE /* supports overloading placement delete */
361# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
362# define ANSICPP
363#endif
364
365#ifdef __HP_aCC
366# define R__ACC
367# define R__VECNEWDELETE /* supports overloading of new[] and delete[] */
368# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
369# if __HP_aCC <= 015000
370# define R__OLDHPACC
371# define R__TEMPLATE_OVERLOAD_BUG
372# define R__GLOBALSTL /* STL in global name space */
373# error "ROOT requires proper support for C++11 or higher"
374# else
375# define R__PLACEMENTDELETE /* supports overloading placement delete */
376# define R__TMPLTSTREAM /* std::iostream implemented with templates */
377# endif
378# ifndef _INCLUDE_LONGLONG
379# define _INCLUDE_LONGLONG
380# endif
381#endif
382
383#ifdef _WIN32
384# define R__WIN32
385# ifndef WIN32
386# define WIN32
387# endif
388# define R__BYTESWAP
389# define R__ACCESS_IN_SYMBOL
390//# define __attribute__(X)
391//# define thread_local static __declspec(thread)
392#endif
393#ifdef _WIN64
394# define R__WIN64
395# ifndef WIN64
396# define WIN64
397# endif
398# define R__x86_64__ 1
399# define R__B64 /* enable when 64 bit machine */
400#endif
401
402#ifdef __SC__
403# define SC
404# define R__SC
405# if defined(WIN32)
406# define NEED_STRING
407# define NEED_STRCASECMP
408# define NEED_SNPRINTF
409# define ANSICPP
410# else
411# define MSDOS
412# define NEED_STRCASECMP
413# define R__BYTESWAP
414# endif
415#endif
416
417#ifdef _MSC_VER
418# define R__VISUAL_CPLUSPLUS
419# define NEED_STRING
420# define NEED_STRCASECMP
421# if _MSC_VER < 1900
422# define NEED_SNPRINTF
423# endif
424# define ANSICPP
425# define R__VECNEWDELETE /* supports overloading of new[] and delete[] */
426# define R__PLACEMENTDELETE /* supports overloading placement delete */
427# define R__PLACEMENTINLINE /* placement new/delete is inline in <new> */
428# if _MSC_VER >= 1400
429# define DONTNEED_VSNPRINTF
430# endif
431# if _MSC_VER < 1310
432# define R__NO_CLASS_TEMPLATE_SPECIALIZATION
433# endif
434# if _MSC_VER <= 1800
435# define R__NO_ATOMIC_FUNCTION_POINTER
436# endif
437#endif
438
439/*--- memory and object statistics -------------------------------------------*/
440
441/* #define R__NOSTATS */
442
443/*--- cpp --------------------------------------------------------------------*/
444
445#ifdef ANSICPP
446 /* symbol concatenation operator */
447# define _NAME1_(name) name
448# define _NAME2_(name1,name2) name1##name2
449# define _NAME3_(name1,name2,name3) name1##name2##name3
450
451 /* stringizing */
452# define _QUOTE_(name) #name
453
454#else
455
456# define _NAME1_(name) name
457# define _NAME2_(name1,name2) _NAME1_(name1)name2
458# define _NAME3_(name1,name2,name3) _NAME2_(name1,name2)name3
459
460# define _QUOTE_(name) "name"
461
462#endif
463
464/* produce an identifier that is almost unique inside a file */
465#ifndef __CINT__
466# define _R__JOIN_(X,Y) _NAME2_(X,Y)
467# define _R__JOIN3_(F,X,Y) _NAME3_(F,X,Y)
468# define _R__UNIQUE_DICT_(X) _R__JOIN3_(R__DICTIONARY_FILENAME,X,__LINE__)
469# define _R__UNIQUE_(X) _R__JOIN_(X,__LINE__)
470#else
471 /* Currently CINT does not really mind to have duplicates and */
472 /* does not work correctly as far as merging tokens is concerned. */
473# define _R__UNIQUE_(X) X
474#endif
475
476/*---- deprecation -----------------------------------------------------------*/
477#if defined(__GNUC__) || defined(__clang__) || defined(__INTEL_COMPILER)
478# if (__GNUC__ == 5 && (__GNUC_MINOR__ == 1 || __GNUC_MINOR__ == 2)) || defined(R__NO_DEPRECATION)
479/* GCC 5.1, 5.2: false positives due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15269
480 or deprecation turned off */
481# define _R__DEPRECATED_LATER(REASON)
482# else
483# define _R__DEPRECATED_LATER(REASON) __attribute__((deprecated(REASON)))
484# endif
485#elif defined(_MSC_VER) || !defined(R__NO_DEPRECATION)
486# define _R__DEPRECATED_LATER(REASON) __pragma(deprecated(REASON))
487#else
488/* Deprecation not supported for this compiler. */
489# define _R__DEPRECATED_LATER(REASON)
490#endif
491
492#ifdef R__WIN32
493#define _R_DEPRECATED_REMOVE_NOW(REASON)
494#else
495#define _R_DEPRECATED_REMOVE_NOW(REASON) __attribute__((REMOVE_THIS_NOW))
496#endif
497
498/* USE AS `R__DEPRECATED(6,30, "Not threadsafe; use TFoo::Bar().")`
499 To be removed by 6.30 */
500#if ROOT_VERSION_CODE <= ROOT_VERSION(6,29,0)
501# define _R__DEPRECATED_630(REASON) _R__DEPRECATED_LATER(REASON)
502#else
503# define _R__DEPRECATED_630(REASON) _R_DEPRECATED_REMOVE_NOW(REASON)
504#endif
505
506/* USE AS `R__DEPRECATED(7,00, "Not threadsafe; use TFoo::Bar().")`
507 To be removed by 7.00 */
508#if ROOT_VERSION_CODE < ROOT_VERSION(6,99,0)
509# define _R__DEPRECATED_700(REASON) _R__DEPRECATED_LATER(REASON)
510#else
511# define _R__DEPRECATED_700(REASON) _R_DEPRECATED_REMOVE_NOW(REASON)
512#endif
513
514
515/* Spell as R__DEPRECATED(6,04, "Not threadsafe; use TFoo::Bar().") */
516#define R__DEPRECATED(MAJOR, MINOR, REASON) \
517 _R__JOIN3_(_R__DEPRECATED_,MAJOR,MINOR)("will be removed in ROOT v" #MAJOR "." #MINOR ": " REASON)
518
519/* Mechanisms to advise users to avoid legacy functions and classes that will not be removed */
520#if defined R__SUGGEST_NEW_INTERFACE
521# define R__SUGGEST_ALTERNATIVE(ALTERNATIVE) \
522 _R__DEPRECATED_LATER("There is a superior alternative: " ALTERNATIVE)
523#else
524# define R__SUGGEST_ALTERNATIVE(ALTERNATIVE)
525#endif
526
527#define R__ALWAYS_SUGGEST_ALTERNATIVE(ALTERNATIVE) \
528 _R__DEPRECATED_LATER("There is a superior alternative: " ALTERNATIVE)
529
530
531
532/*---- misc ------------------------------------------------------------------*/
533
534#ifdef R__GNU
535# define SafeDelete(p) { if (p) { delete p; p = nullptr; } }
536#else
537# define SafeDelete(p) { delete p; p = nullptr; }
538#endif
539
540#ifdef __FAST_MATH__
541#define R__FAST_MATH
542#endif
543
544#if (__GNUC__ >= 7)
545#define R__DO_PRAGMA(x) _Pragma (#x)
546# define R__INTENTIONALLY_UNINIT_BEGIN \
547 R__DO_PRAGMA(GCC diagnostic push) \
548 R__DO_PRAGMA(GCC diagnostic ignored "-Wmaybe-uninitialized") \
549 R__DO_PRAGMA(GCC diagnostic ignored "-Wuninitialized")
550# define R__INTENTIONALLY_UNINIT_END \
551 R__DO_PRAGMA(GCC diagnostic pop)
552#else
553# define R__INTENTIONALLY_UNINIT_BEGIN
554# define R__INTENTIONALLY_UNINIT_END
555
556#endif
557
558#ifdef R__HAS_ATTRIBUTE_ALWAYS_INLINE
559#define R__ALWAYS_INLINE inline __attribute__((always_inline))
560#else
561#if defined(_MSC_VER)
562#define R__ALWAYS_INLINE __forceinline
563#else
564#define R__ALWAYS_INLINE inline
565#endif
566#endif
567
568// See also https://nemequ.github.io/hedley/api-reference.html#HEDLEY_NEVER_INLINE
569// for other platforms.
570#ifdef R__HAS_ATTRIBUTE_NOINLINE
571#define R__NEVER_INLINE inline __attribute__((noinline))
572#else
573#if defined(_MSC_VER)
574#define R__NEVER_INLINE inline __declspec(noinline)
575#else
576#define R__NEVER_INLINE inline
577#endif
578#endif
579
580/*---- unlikely / likely expressions -----------------------------------------*/
581// These are meant to use in cases like:
582// if (R__unlikely(expression)) { ... }
583// in performance-critical sections. R__unlikely / R__likely provide hints to
584// the compiler code generation to heavily optimize one side of a conditional,
585// causing the other branch to have a heavy performance cost.
586//
587// It is best to use this for conditionals that test for rare error cases or
588// backward compatibility code.
589
590#if (__GNUC__ >= 3) || defined(__INTEL_COMPILER)
591#if !defined(R__unlikely)
592 #define R__unlikely(expr) __builtin_expect(!!(expr), 0)
593#endif
594#if !defined(R__likely)
595 #define R__likely(expr) __builtin_expect(!!(expr), 1)
596#endif
597#else
598 #define R__unlikely(expr) expr
599 #define R__likely(expr) expr
600#endif
601
602// Setting this define causes ROOT to keep statistics about memory buffer allocation
603// time within the TTree. Given that this is a "hot-path", we provide a mechanism
604// for enabling / disabling this at compile time by developers; default is disabled.
605#ifndef R__TRACK_BASKET_ALLOC_TIME
606//#define R__TRACK_BASKET_ALLOC_TIME 1
607#endif
608
609#endif