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Re: C++ and read redefinition
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From: |
Bruno Haible |
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Subject: |
Re: C++ and read redefinition |
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Date: |
Fri, 25 Dec 2020 16:22:35 +0100 |
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User-agent: |
KMail/5.1.3 (Linux/4.4.0-197-generic; KDE/5.18.0; x86_64; ; ) |
On 2020-12-06 I committed this:
> * lib/fcntl.in.h (creat, open): In C++ mode, when GNULIB_NAMESPACE is
> defined: 1. Define a symbol in this namespace. 2. Don't redirect using
> a preprocessor #define.
> * lib/math.in.h (j0, j1, jn, y0, y1, yn): Likewise.
> ...
There are other situations when it is necessary to avoid preprocessor
#defines. For example, when building libtextstyle on native Windows,
the package intentionally does
#define isatty libtextstyle_isatty
and when <unistd.h> does
#undef isatty
#define isatty _isatty
the library defines a wrong symbol, leading to a link error.
So, what we need is a way through which a package can avoid some or
all of these preprocessor #defines. Done as follows:
2020-12-25 Bruno Haible <bruno@clisp.org>
Make it possible to turn off each of the Windows oldnames workarounds.
* lib/fcntl.in.h (creat, open): Conditionalize each of the Windows
oldnames workarounds through a GNULIB_MDA_<func> symbol.
* lib/math.in.h (j0, j1, jn, y0, y1, yn): Likewise.
* lib/search.in.h (lfind, lsearch): Likewise.
* lib/stdio.in.h (fcloseall, fdopen, fileno, getw, putw, tempnam):
Likewise.
* lib/stdlib.in.h (ecvt, fcvt, gcvt, mktemp, putenv): Likewise.
* lib/string.in.h (memccpy, strdup): Likewise.
* lib/sys_stat.in.h (chmod, umask): Likewise.
* lib/time.in.h (tzset): Likewise.
* lib/unistd.in.h (access, chdir, close, dup, dup2, execl, execle,
execlp, execv, execve, execvp, execvpe, getcwd, getpid, isatty, lseek,
read, rmdir, swab, unlink, write): Likewise.
* lib/utime.in.h (utime): Likewise.
* lib/wchar.in.h (wcsdup): Likewise.
* m4/fcntl_h.m4 (gl_FCNTL_H_DEFAULTS): Initialize these
GNULIB_MDA_<func> symbols.
* m4/math_h.m4 (gl_MATH_H_DEFAULTS): Likewise.
* m4/search_h.m4 (gl_SEARCH_H_DEFAULTS): Likewise.
* m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS): Likewise.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Likewise.
* m4/string_h.m4 (gl_HEADER_STRING_H_DEFAULTS): Likewise.
* m4/sys_stat_h.m4 (gl_SYS_STAT_H_DEFAULTS): Likewise.
* m4/time_h.m4 (gl_HEADER_TIME_H_DEFAULTS): Likewise.
* m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Likewise.
* m4/utime_h.m4 (gl_UTIME_H_DEFAULTS): Likewise.
* m4/wchar_h.m4 (gl_WCHAR_H_DEFAULTS): Likewise.
* modules/fcntl-h (Makefile.am): Substitute these GNULIB_MDA_<func>
symbols.
* modules/math (Makefile.am): Likewise.
* modules/search (Makefile.am): Likewise.
* modules/stdio (Makefile.am): Likewise.
* modules/stdlib (Makefile.am): Likewise.
* modules/string (Makefile.am): Likewise.
* modules/sys_stat (Makefile.am): Likewise.
* modules/time (Makefile.am): Likewise.
* modules/unistd (Makefile.am): Likewise.
* modules/utime-h (Makefile.am): Likewise.
* modules/wchar (Makefile.am): Likewise.
0001-Make-it-possible-to-turn-off-each-of-the-Windows-old.patch
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