mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 22:30:07 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
111 lines
4.2 KiB
C
111 lines
4.2 KiB
C
/* Handle feature test macros at the start of a header.
|
|
Copyright (C) 2016-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* This header is internal to glibc and should not be included outside
|
|
of glibc headers. Headers including it must define
|
|
__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION first. This header
|
|
cannot have multiple include guards because ISO C feature test
|
|
macros depend on the definition of the macro when an affected
|
|
header is included, not when the first system header is
|
|
included. */
|
|
|
|
#ifndef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
|
|
# error "Never include <bits/libc-header-start.h> directly."
|
|
#endif
|
|
|
|
#undef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
|
|
|
|
#include <features.h>
|
|
|
|
/* ISO/IEC TR 24731-2:2010 defines the __STDC_WANT_LIB_EXT2__
|
|
macro. */
|
|
#undef __GLIBC_USE_LIB_EXT2
|
|
#if (defined __USE_GNU \
|
|
|| (defined __STDC_WANT_LIB_EXT2__ && __STDC_WANT_LIB_EXT2__ > 0))
|
|
# define __GLIBC_USE_LIB_EXT2 1
|
|
#else
|
|
# define __GLIBC_USE_LIB_EXT2 0
|
|
#endif
|
|
|
|
/* ISO/IEC TS 18661-1:2014 defines the __STDC_WANT_IEC_60559_BFP_EXT__
|
|
macro. Most but not all symbols enabled by that macro in TS
|
|
18661-1 are enabled unconditionally in C2X. In C2X, the symbols in
|
|
Annex F still require a new feature test macro
|
|
__STDC_WANT_IEC_60559_EXT__ instead (C2X does not define
|
|
__STDC_WANT_IEC_60559_BFP_EXT__), while a few features from TS
|
|
18661-1 are not included in C2X (and thus should depend on
|
|
__STDC_WANT_IEC_60559_BFP_EXT__ even when C2X features are
|
|
enabled).
|
|
|
|
__GLIBC_USE (IEC_60559_BFP_EXT) controls those features from TS
|
|
18661-1 not included in C2X.
|
|
|
|
__GLIBC_USE (IEC_60559_BFP_EXT_C2X) controls those features from TS
|
|
18661-1 that are also included in C2X (with no feature test macro
|
|
required in C2X).
|
|
|
|
__GLIBC_USE (IEC_60559_EXT) controls those features from TS 18661-1
|
|
that are included in C2X but conditional on
|
|
__STDC_WANT_IEC_60559_EXT__. (There are currently no features
|
|
conditional on __STDC_WANT_IEC_60559_EXT__ that are not in TS
|
|
18661-1.) */
|
|
#undef __GLIBC_USE_IEC_60559_BFP_EXT
|
|
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_BFP_EXT__
|
|
# define __GLIBC_USE_IEC_60559_BFP_EXT 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_BFP_EXT 0
|
|
#endif
|
|
#undef __GLIBC_USE_IEC_60559_BFP_EXT_C2X
|
|
#if __GLIBC_USE (IEC_60559_BFP_EXT) || __GLIBC_USE (ISOC2X)
|
|
# define __GLIBC_USE_IEC_60559_BFP_EXT_C2X 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_BFP_EXT_C2X 0
|
|
#endif
|
|
#undef __GLIBC_USE_IEC_60559_EXT
|
|
#if __GLIBC_USE (IEC_60559_BFP_EXT) || defined __STDC_WANT_IEC_60559_EXT__
|
|
# define __GLIBC_USE_IEC_60559_EXT 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_EXT 0
|
|
#endif
|
|
|
|
/* ISO/IEC TS 18661-4:2015 defines the
|
|
__STDC_WANT_IEC_60559_FUNCS_EXT__ macro. Other than the reduction
|
|
functions, the symbols from this TS are enabled unconditionally in
|
|
C2X. */
|
|
#undef __GLIBC_USE_IEC_60559_FUNCS_EXT
|
|
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_FUNCS_EXT__
|
|
# define __GLIBC_USE_IEC_60559_FUNCS_EXT 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_FUNCS_EXT 0
|
|
#endif
|
|
#undef __GLIBC_USE_IEC_60559_FUNCS_EXT_C2X
|
|
#if __GLIBC_USE (IEC_60559_FUNCS_EXT) || __GLIBC_USE (ISOC2X)
|
|
# define __GLIBC_USE_IEC_60559_FUNCS_EXT_C2X 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_FUNCS_EXT_C2X 0
|
|
#endif
|
|
|
|
/* ISO/IEC TS 18661-3:2015 defines the
|
|
__STDC_WANT_IEC_60559_TYPES_EXT__ macro. */
|
|
#undef __GLIBC_USE_IEC_60559_TYPES_EXT
|
|
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_TYPES_EXT__
|
|
# define __GLIBC_USE_IEC_60559_TYPES_EXT 1
|
|
#else
|
|
# define __GLIBC_USE_IEC_60559_TYPES_EXT 0
|
|
#endif
|