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Re: status of new 'c++defs' module?
From: |
Bruno Haible |
Subject: |
Re: status of new 'c++defs' module? |
Date: |
Mon, 8 Mar 2010 03:23:53 +0100 |
User-agent: |
KMail/1.9.9 |
John W. Eaton asked:
> Is there any reason not to commit the changes for the new c++defs
> module?
It was delayed because I wanted to have unit tests before committing the
changes.
It is now committed, as a series of 48 individual commits. The most interesting
part are the new idioms; documented at the head of build-aux/c++defs.h.
The tests pass on glibc systems and should pass on MacOS X, Solaris, Cygwin.
Currently the C++ symbols are non-overloaded functions. It would be possible,
with more work, to provided overloaded functions:
- for <math.h> functions, see [1],
- for string search functions, like memchr, strchr, strstr, see [2]-[7].
But this is extra effort, more likely to hit differences between C++ compilers,
and is easier handled on the application's side (via some const_cast or
static_cast).
Bruno
[1] http://www.cplusplus.com/reference/clibrary/cmath/
[2] http://www.cplusplus.com/reference/clibrary/cstring/
[3] http://www.cplusplus.com/reference/clibrary/cstring/memchr/
[4] http://www.cplusplus.com/reference/clibrary/cstring/strchr/
[5] http://www.cplusplus.com/reference/clibrary/cstring/strrchr/
[6] http://www.cplusplus.com/reference/clibrary/cstring/strpbrk/
[7] http://www.cplusplus.com/reference/clibrary/cstring/strstr/
2010-03-07 Bruno Haible <address@hidden>
Document C++ namespace mode.
* doc/gnulib.texi (A C++ namespace for gnulib): New section.
wctype: Avoid #define replacements in C++ mode.
* lib/wctype.in.h: Include c++defs.h, warn-on-use.h.
(iswalnum, iswalpha, iswblank, iswcntrl, iswdigit, iswgraph, iswlower,
iswprint, iswpunct, iswspace, iswupper, iswxdigit, towlower, towupper):
In C++, define a namespaced alias symbol.
* m4/wctype_h.m4 (gl_WCTYPE_H): Don't set WCTYPE_H.
* modules/wctype (Depends-on): Add c++defs, warn-on-use.
(Makefile.am): Provide a wctype.h replacement always. Update wctype.h
rule.
wchar: Avoid #define replacements in C++ mode.
* lib/wchar.in.h: Include c++defs.h.
(btowc, wctob, mbsinit, mbrtowc, mbrlen, mbsrtowcs, mbsnrtowcs,
wcrtomb, wcsrtombs, wcsnrtombs): In C++, define a namespaced alias
symbol.
(wcwidth): Likewise. Fix prototype to be POSIX compliant.
* modules/wchar (Depends-on): Add c++defs.
(Makefile.am): Update wchar.h rule.
unistd: Avoid #define replacements in C++ mode.
* lib/unistd.in.h: Include c++defs.h.
(chown, close, dup, dup2, dup3, euidaccess, faccessat, fchdir,
fchownat, fsync, ftruncate, getcwd, getdomainname, getdtablesize,
getgroups, gethostname, getlogin, getlogin_r, getpagesize,
getusershell, setusershell, endusershell, lchown, link, linkat, lseek,
pipe2, pread, readlink, readlinkat, rmdir, sleep, symlink, symlinkat,
unlink, unlinkat, usleep, write): In C++, define a namespaced alias
symbol.
(environ): Update.
* modules/unistd (Depends-on): Add c++defs.
(Makefile.am): Update unistd.h rule.
time: Avoid #define replacements in C++ mode.
* lib/time.in.h: Include c++defs.h, warn-on-use.h.
(nanosleep, mktime, localtime_r, gmtime_r, strptime, timegm): In C++,
define a namespaced alias symbol.
* m4/time_h.m4 (gl_TIME_MODULE_INDICATOR): New macro.
(gl_HEADER_TIME_H_DEFAULTS): Initialize also GNULIB_MKTIME,
GNULIB_NANOSLEEP, GNULIB_STRPTIME, GNULIB_TIMEGM.
* modules/time (Depends-on): Add c++defs, warn-on-use.
(Makefile.am): Update time.h rule.
* modules/mktime (configure.ac): Invoke gl_TIME_MODULE_INDICATOR.
* modules/nanosleep (configure.ac): Likewise.
* modules/strptime (configure.ac): Likewise.
* modules/timegm (configure.ac): Likewise.
sys_time: Avoid #define replacements in C++ mode.
* lib/sys_time.in.h: Include c++defs.h.
(gettimeofday): In C++, define a namespaced alias symbol.
* modules/sys_time (Depends-on): Add c++defs.
(Makefile.am): Update sys/time.h rule.
sys_stat: Avoid #define replacements in C++ mode.
* lib/sys_stat.in.h: Include c++defs.h.
(fchmodat, fstat, fstatat, futimens, lchmod, lstat, mkdir, mkdirat,
mkfifo, mkfifoat, mknod, mknodat, utimensat): In C++, define a
namespaced alias symbol.
In C++, define a namespaced alias symbol.
* modules/sys_stat (Depends-on): Add c++defs.
(Makefile.am): Update sys/stat.h rule.
sys_socket: Avoid #define replacements in C++ mode.
* lib/sys_socket.in.h: Handle the case of recursive include on Cygwin.
Include c++defs.h. Include warn-on-use.h earlier. Enable the function
definitions also when the system has a <sys/socket.h>.
(socket, connect, accept, bind, getpeername, getsockname, getsockopt,
listen, recv, send, recvfrom, sendto, setsockopt, shutdown, accept4):
In C++, define a namespaced alias symbol.
* modules/sys_socket (Depends-on): Add c++defs.
(Makefile.am): Update sys/socket.h rule.
sys_select: Avoid #define replacements in C++ mode.
* lib/sys_select.in.h: Include c++defs.h. Enable the function
definitions also when the system has a <sys/select.h>.
(select): In C++, define a namespaced alias symbol.
* modules/sys_select (Depends-on): Add c++defs.
(Makefile.am): Update sys/select.h rule.
sys_ioctl: Avoid #define replacements in C++ mode.
* lib/sys_ioctl.in.h: Include c++defs.h.
(ioctl): In C++, define a namespaced alias symbol.
* modules/sys_ioctl (Depends-on): Add c++defs.
(Makefile.am): Update sys/ioctl.h rule.
string: Avoid #define replacements in C++ mode.
* lib/string.in.h: Include c++defs.h.
(stpncpy): Define to rpl_stpncpy, not gnu_stpncpy.
(memchr, memmem, mempcpy, memrchr, rawmemchr, stpcpy, stpncpy,
strchrnul, strdup, strndup, strnlen, strpbrk, strsep, strstr,
strcasestr, strtok_r, mbslen, mbschr, mbsrchr, mbspbrk, strerror,
strsignal, strverscmp): In C++, define a namespaced alias symbol.
* modules/string (Depends-on): Add c++defs.
(Makefile.am): Update string.h rule.
stdlib: Avoid #define replacements in C++ mode.
* lib/stdlib.in.h: Include c++defs.h.
(atoll, calloc, canonicalize_file_name, getloadavg, getsubopt, malloc,
mkdtemp, mkostemp, mkostemps, mkstemp, mkstemps, putenv, random_r,
srandom_r, initstate_r, setstate_r, realloc, realpath, rpmatch, setenv,
strtod, strtoll, strtoull, unsetenv): In C++, define a namespaced alias
symbol.
* modules/stdlib (Depends-on): Add c++defs.
(Makefile.am): Update stdlib.h rule.
stdio: Avoid #define replacements in C++ mode.
* lib/stdio.in.h: Include c++defs.h.
(dprintf, fclose, fflush, fopen, fprintf, fpurge, fputc, fputs,
freopen, fseek, fseeko, ftell, ftello, fwrite, getdelim, getline,
obstack_printf, obstack_vprintf, perror, popen, printf, fputc, putchar,
puts, remove, rename, renameat, snprintf, sprintf, asprintf, vasprintf,
vdprintf, vfprintf, vprintf, vsnprintf, vsprintf): In C++, define a
namespaced alias symbol.
* modules/stdio (Depends-on): Add c++defs.
(Makefile.am): Update stdio.h rule.
spawn: Avoid #define replacements in C++ mode.
* lib/spawn.in.h: Include c++defs.h.
(posix_spawn, posix_spawnp, posix_spawnattr_init,
posix_spawnattr_destroy, posix_spawnattr_getsigdefault,
posix_spawnattr_setsigdefault, posix_spawnattr_getsigmask,
posix_spawnattr_setsigmask, posix_spawnattr_getflags,
posix_spawnattr_setflags, posix_spawnattr_getpgroup,
posix_spawnattr_setpgroup, posix_spawnattr_getschedpolicy,
posix_spawnattr_setschedpolicy, posix_spawnattr_getschedparam,
posix_spawnattr_setschedparam, posix_spawn_file_actions_init,
posix_spawn_file_actions_destroy, posix_spawn_file_actions_addopen,
posix_spawn_file_actions_addclose, posix_spawn_file_actions_adddup2):
In C++, define a namespaced alias symbol.
* modules/spawn (Depends-on): Add c++defs.
(Makefile.am): Update spawn.h rule.
signal: Avoid #define replacements in C++ mode.
* lib/signal.in.h: Include c++defs.h.
(sigismember, sigemptyset, sigaddset, sigdelset, sigfillset,
sigpending, sigprocmask, signal, raise, sigaction): In C++, define a
namespaced alias symbol.
* modules/signal (Depends-on): Add c++defs.
(Makefile.am): Update signal.h rule.
search: Avoid #define replacements in C++ mode.
* lib/search.in.h: Include c++defs.h.
(_gl_search_compar_fn, _gl_search_action_fn): New types.
(tsearch, tfind, tdelete, twalk): In C++, define a namespaced alias
symbol.
* modules/search (Depends-on): Add c++defs.
(Makefile.am): Update search.h rule.
math: Avoid #define replacements in C++ mode.
* lib/math.in.h: Include c++defs.h.
(frexp, acosl, asinl, atanl, ceilf, ceill, cosl, expl, floorf, floorl,
frexpl, ldexpl, logl, roundf, round, roundl, sinl, sqrtl, tanl, truncf,
trunc, truncl): In C++, define a namespaced alias symbol.
* modules/math (Depends-on): Add c++defs.
(Makefile.am): Update math.h rule.
locale: Avoid #define replacements in C++ mode.
* lib/locale.in.h: Include c++defs.h.
(duplocale): In C++, define a namespaced alias symbol.
* m4/locale_h.m4 (gl_LOCALE_H_DEFAULTS): Initialize HAVE_DUPLOCALE.
* m4/duplocale.m4 (gl_FUNC_DUPLOCALE): Set HAVE_DUPLOCALE.
* modules/locale (Depends-on): Add c++defs.
(Makefile.am): Update locale.h rule. Substitute HAVE_DUPLOCALE.
langinfo: Avoid #define replacements in C++ mode.
* lib/langinfo.in.h: Include c++defs.h.
(nl_langinfo): In C++, define a namespaced alias symbol.
* modules/langinfo (Depends-on): Add c++defs.
(Makefile.am): Update langinfo.h rule.
iconv-h: Avoid #define replacements in C++ mode.
* lib/iconv.in.h: Include c++defs.h, warn-on-use.h.
(iconv_open, iconv, iconv_close): In C++, define a namespaced alias
symbol.
* m4/iconv_open.m4 (gl_FUNC_ICONV_OPEN): Invoke gl_REPLACE_ICONV_H
whenever iconv is present.
* modules/iconv-h (Depends-on): Add c++defs, warn-on-use.
(Makefile.am): Update iconv.h rule.
glob: Avoid #define replacements in C++ mode.
* lib/glob.in.h: Include c++defs.h, warn-on-use.h.
(_gl_glob_errfunc_fn): New type.
(glob, globfree, glob_pattern_p): In C++, define a namespaced alias
symbol.
* modules/glob (Depends-on): Add c++defs, warn-on-use.
(Makefile.am): Update glob.h rule.
fcntl-h: Avoid #define replacements in C++ mode.
* lib/fcntl.in.h: Include c++defs.h.
(fcntl, open, openat): In C++, define a namespaced alias symbol.
* modules/fcntl-h (Depends-on): Add c++defs.
(Makefile.am): Update fcntl.h rule.
dirent: Avoid #define replacements in C++ mode.
* lib/dirent.in.h: Include c++defs.h.
(closedir, fdopendir, opendir, scandir, alphasort): In C++, define a
namespaced alias symbol.
(dirfd): Update declaration.
* modules/dirent (Depends-on): Add c++defs.
(Makefile.am): Update dirent.h rule.
ctype: Make it usable in C++ code.
* lib/ctype.in.h: Include c++defs.h.
(isblank): Declare as extern "C".
* modules/ctype (Depends-on): Add c++defs.
(Makefile.am): Update ctype.h rule.
New module 'c++defs'.
* modules/c++defs: New file.
* build-aux/c++defs.h: New file.
Reported by John W. Eaton <address@hidden>.