diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | doc/posix-headers/sys_msg.texi | 2 | ||||
| -rw-r--r-- | lib/sys_msg.in.h | 30 | ||||
| -rw-r--r-- | m4/sys_msg_h.m4 | 20 | ||||
| -rw-r--r-- | modules/sys_msg | 48 |
5 files changed, 107 insertions, 1 deletions
@@ -1,3 +1,11 @@ +2023-04-14 Bruno Haible <bruno@clisp.org> + + sys_msg: New module. + * lib/sys_msg.in.h: New file. + * m4/sys_msg_h.m4: New file. + * modules/sys_msg: New file. + * doc/posix-headers/sys_msg.texi: Mention the new module. + 2023-04-13 Bruno Haible <bruno@clisp.org> Add more reminders to include <config.h>. diff --git a/doc/posix-headers/sys_msg.texi b/doc/posix-headers/sys_msg.texi index 6b15537d62..8a4578d78b 100644 --- a/doc/posix-headers/sys_msg.texi +++ b/doc/posix-headers/sys_msg.texi @@ -3,7 +3,7 @@ POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_msg.h.html} -Gnulib module: --- +Gnulib module: sys_msg Portability problems fixed by Gnulib: @itemize diff --git a/lib/sys_msg.in.h b/lib/sys_msg.in.h new file mode 100644 index 0000000000..46cf7c19f9 --- /dev/null +++ b/lib/sys_msg.in.h @@ -0,0 +1,30 @@ +/* Provide a more reliable sys/msg.h. + + Copyright (C) 2023 Free Software Foundation, Inc. + + This file 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. + + This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */ + +#if __GNUC__ >= 3 +@PRAGMA_SYSTEM_HEADER@ +#endif +@PRAGMA_COLUMNS@ + +/* This file uses #include_next of a system file that defines time_t. + For the 'year2038' module to work right, <config.h> needs to have been + included before. */ +#if !_GL_CONFIG_H_INCLUDED + #error "Please include config.h first." +#endif + +#@INCLUDE_NEXT@ @NEXT_SYS_MSG_H@ diff --git a/m4/sys_msg_h.m4 b/m4/sys_msg_h.m4 new file mode 100644 index 0000000000..c62cdabf2f --- /dev/null +++ b/m4/sys_msg_h.m4 @@ -0,0 +1,20 @@ +# sys_msg_h.m4 serial 1 +dnl Copyright (C) 2023 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Written by Bruno Haible. + +AC_DEFUN_ONCE([gl_SYS_MSG_H], +[ + AC_CHECK_HEADERS_ONCE([sys/msg.h]) + dnl For now, we provide a <sys/msg.h> wrapper only if the system already has + dnl a <sys/msg.h>. + if test $ac_cv_header_sys_msg_h = yes; then + GL_GENERATE_SYS_MSG_H=true + gl_CHECK_NEXT_HEADERS([sys/msg.h]) + else + GL_GENERATE_SYS_MSG_H=false + fi +]) diff --git a/modules/sys_msg b/modules/sys_msg new file mode 100644 index 0000000000..6b059cfc49 --- /dev/null +++ b/modules/sys_msg @@ -0,0 +1,48 @@ +Description: +<sys/msg.h> with extra checks. + +Files: +lib/sys_msg.in.h +m4/sys_msg_h.m4 + +Depends-on: +gen-header +include_next + +configure.ac: +gl_SYS_MSG_H +gl_CONDITIONAL_HEADER([sys/msg.h]) +AC_PROG_MKDIR_P + +Makefile.am: +BUILT_SOURCES += $(SYS_MSG_H) + +# We need the following in order to create <sys/msg.h> when desired. +if GL_GENERATE_SYS_MSG_H +sys/msg.h: sys_msg.in.h $(top_builddir)/config.status + $(AM_V_GEN)$(MKDIR_P) '%reldir%/sys' + $(AM_V_at)$(SED_HEADER_STDOUT) \ + -e 's|@''GUARD_PREFIX''@|${gl_include_guard_prefix}|g' \ + -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \ + -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \ + -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \ + -e 's|@''NEXT_SYS_MSG_H''@|$(NEXT_SYS_MSG_H)|g' \ + $(srcdir)/sys_msg.in.h > $@-t + $(AM_V_at)mv $@-t $@ +else +sys/msg.h: $(top_builddir)/config.status + rm -f $@ +endif +MOSTLYCLEANFILES += sys/msg.h sys/msg.h-t +MOSTLYCLEANDIRS += sys + +Include: +#if HAVE_SYS_MSG_H +<sys/msg.h> +#endif + +License: +LGPLv2+ + +Maintainer: +all |