external/cde
1
0
Fork 0
mirror of git://git.code.sf.net/p/cdesktopenv/code synced 2025-03-09 15:50:02 +00:00
Code Issues Releases Wiki Activity
cde/src/lib/libast/features/standards
Martijn Dekker 2c4b05b4f8 tie up standards macros loose ends (re: 289dd46c) 
src/lib/libast/features/standards:
- Do not emit #defines for the typ u_long test which is only used
  as a heuristic in subsequent tests in this file. (Note that 'set'
  can set and unset any iffe command-line --option at runtime.)
- Remove definition of _ISOC99_SOURCE macro. This is another old
  GNU thing; feature_test_macros(7) says invoking the compiler with
  the option -std=c99 has the same effect. But modern GCC has C11
  with GNU extensions as the default, which is fine. If a
  particular standard is desired, pass a -std=... flag in $CC.

src/cmd/ksh93/features/rlimits:
- Remove overlooked Linux *64* types/functions hackery.
  After defining standards macros it caused a build failure
  on at least one version of Void Linux (but not 5.15.14_1).
  Thanks to @JohnoKing for the report.

src/cmd/ksh93/sh/subshell.c,
src/lib/libdll/dllnext.c:
- Remove now-redundant local definitions of _GNU_SOURCE and
  __EXTENSIONS__ macros.

src/cmd/ksh93/tests/builtins.sh:
- Fix broken sed invocation (re: 41829efa).
2022-01-20 05:50:00 +00:00

337 lines
9 KiB
Text
Raw Blame History

# Disable default inclusion of <stdio.h> by setting stdio option to empty
set stdio
# Flag systems that omit necessary definitions such as u_long
# when _POSIX_SOURCE or _XOPEN_SOURCE are defined.
# Affected: Mac OS X, UnixWare.
# Do not emit a #define for this test, just remember it for the next tests in this file.
set nodefine
typ u_long
set define
#
# The following tests try to define the features/standards macros that expose
# as much functionality as possible on the current system. We've got our own
# feature test framework, iffe, so we want POSIX + all possible extensions.
#
# The results of these are included in everything that uses libast and
# (as of 2021-12-06) also in all subsequent feature tests run by iffe.
#
# Note: The code between compile{ ... }end is the feature test; the text
# in the subsequent { ... } block is output literally to FEATURE/standards.
#
if tst note{ BSD (Free, Net, Open, et al) }end compile{
/*
* On BSD systems, _POSIX_SOURCE and such are used to *limit* functionality to a known API;
* they don't enable anything. The general intent in BSD is to enable everything by default.
*/
#include <limits.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <wchar.h>
#if !(BSD && !__APPLE__ && !__MACH__ && !NeXTBSD) /* NeXT/macOS falsely claim to be BSD */
#error not BSD
#endif
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy_;
#endif
int main(void)
{
wchar_t _wchar_dummy_ = 0;
wcwidth(_wchar_dummy_);
return 0;
}
}end {
/* No standards or features macro here. On BSD, everything is enabled by default */
}
elif tst note{ Darwin (macOS, Mac OS X) }end compile{
/*
* From compat(5) on macOS 10.14.6:
*
* Defining _POSIX_C_SOURCE or _DARWIN_C_SOURCE causes library and kernel calls to
* conform to the SUSv3 standards even if doing so would alter the behavior of func-
* tions used in 10.3. Defining _POSIX_C_SOURCE also removes functions, types, and
* other interfaces that are not part of SUSv3 from the normal C namespace, unless
* _DARWIN_C_SOURCE is also defined (i.e., _DARWIN_C_SOURCE is _POSIX_C_SOURCE with
* non-POSIX extensions).
*/
#define _DARWIN_C_SOURCE 1
#include <limits.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <wchar.h>
#if !(__APPLE__ && __MACH__ && NeXTBSD)
#error not Darwin
#endif
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy_;
#endif
int main(void)
{
wchar_t _wchar_dummy_ = 0;
wcwidth(_wchar_dummy_);
return 0;
}
}end {
#ifndef _DARWIN_C_SOURCE
#define _DARWIN_C_SOURCE 1
#endif
}
elif tst note{ SunOS (Solaris, illumos) }end compile{
/*
* On Solaris/illumos, we ignore the standards(5) manual completely because
* defining recommended standards macros will disable functionality that
* libast depends on. Instead we define unofficial _XPG* macros that enable
* up-to-date declarations and functionality in Solaris system headers.
* (Note that we must also avoid passing any -std=... flag to the compiler,
* because that will disable essential functionality as well.)
*/
#define _XPG7
#define _XPG6
#define _XPG5
#define _XPG4_2
#define _XPG4
#define _XPG3
#define __EXTENSIONS__ 1
#define _XOPEN_SOURCE 9900
#undef _POSIX_C_SOURCE
#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <wchar.h>
#if !__sun
#error dark
#endif
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy_;
#endif
int main(void)
{
wchar_t _wchar_dummy_ = 0;
wcwidth(_wchar_dummy_);
return 0;
}
}end {
#define _XPG7
#define _XPG6
#define _XPG5
#define _XPG4_2
#define _XPG4
#define _XPG3
#define __EXTENSIONS__ 1
#define _XOPEN_SOURCE 9900
#undef _POSIX_C_SOURCE
}
elif tst note{ GNU (glibc) or Cygwin }end compile{
/*
* On GNU (GNU's Not UNIX) and Cygwin, _GNU_SOURCE is the "everything and the kitchen sink" macro
* (see feature_test_macros(7)), but on GNU we also need to define _FILE_OFFSET_BITS to get large
* file support. We also need to define 'basename' to stop string.h from declaring a GNU-specific
* version of basename(3) which on Cygwin has a declaration that conflicts with AST basename(3).
*/
#define _GNU_SOURCE 1
#define _FILE_OFFSET_BITS 64
#define basename basename
#include <limits.h>
#include <unistd.h>
#include <features.h>
#include <sys/types.h>
#include <wchar.h>
#if !__GLIBC__ && !__CYGWIN__
#error not GNU or Cygwin
#endif
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy_;
#endif
int main(void)
{
wchar_t _wchar_dummy_ = 0;
wcwidth(_wchar_dummy_);
return 0;
}
}end {
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#define basename basename /* avoid string.h defining this in conflict with AST basename(3) */
}
elif tst note{ _ALL_SOURCE & _POSIX_SOURCE & _POSIX_C_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{
#define _ALL_SOURCE 1
#define _POSIX_SOURCE 1
#define _POSIX_C_SOURCE 21000101L
#define _XOPEN_SOURCE 9900
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy_;
#endif
}end {
#ifndef _ALL_SOURCE
#define _ALL_SOURCE 1
#endif
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#endif
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 21000101L
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 9900
#endif
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
elif tst note{ _ALL_SOURCE & _POSIX_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{
#define _ALL_SOURCE 1
#define _POSIX_SOURCE 1
#define _XOPEN_SOURCE 9900
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef _ALL_SOURCE
#define _ALL_SOURCE 1
#endif
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 9900
#endif
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
elif tst note{ _POSIX_SOURCE & _POSIX_C_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{
#define _POSIX_SOURCE 1
#define _POSIX_C_SOURCE 21000101L
#define _XOPEN_SOURCE 9900
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#endif
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 21000101L
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 9900
#endif
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
elif tst note{ _POSIX_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{
#define _POSIX_SOURCE 1
#define _XOPEN_SOURCE 1
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 1
#endif
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
elif tst note{ _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{
#define _XOPEN_SOURCE 1
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 1
#endif
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
elif tst note{ _XOPEN_SOURCE works }end compile{
#define _XOPEN_SOURCE 1
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 1
#endif
}
else tst note{ __EXTENSIONS__ works }end compile{
#define __EXTENSIONS__ 1
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
int _do_these_compile_ = _POSIX_PATH_MAX & _SC_PAGESIZE;
#if _typ_u_long
u_long _test_dummy;
#endif
}end {
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
}
endif
Reference in a new issue View git blame Copy permalink