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view modules/errno @ 14853:bdc85db78f47
strerror: drop strerror_r dependency
Since the errno module is responsible for introducing replacement
errno values, it should also be responsible for translating those
new values into strings. And by moving the replacements into a
file managed by the errno, we can then break the dependency between
strerror and strerror_r, so that strerror no longer drags in
multi-threading modules required by strerror_r.
Tested on glibc with:
gl_cv_header_errno_h_complete=no gl_cv_func_working_strerror=no \
gl_cv_func_strerror_r_works=no ./gnulib-tool --with-tests \
--test strerror strerror_r-posix
* lib/strerror_r.c (strerror_r): Move gnulib replacement strings...
* lib/strerror-override.c (strerror_override): ...to new file.
* lib/strerror-override.h: Add prototype.
* lib/strerror-impl.h: Delete.
* lib/strerror.c (strerror): New implementation.
* modules/errno (Files): Add new files.
(configure.ac): Compile new file as appropriate.
* modules/strerror (Files): Drop unused file.
(Depends-on): Drop strerror_r-posix.
* MODULES.html.sh: Document strerror_r-posix.
Requested by Sam Steingold.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 24 May 2011 15:33:49 -0600 |
parents | 5f709022a256 |
children | 293a9a1292a9 |
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Description: A POSIX-like <errno.h>. Files: lib/errno.in.h lib/strerror-override.h lib/strerror-override.c m4/errno_h.m4 Depends-on: include_next configure.ac: gl_HEADER_ERRNO_H if test -n "$ERRNO_H"; then AC_LIBOBJ([strerror-override]) fi Makefile.am: BUILT_SOURCES += $(ERRNO_H) # We need the following in order to create <errno.h> when the system # doesn't have one that is POSIX compliant. if GL_GENERATE_ERRNO_H errno.h: errno.in.h $(top_builddir)/config.status $(AM_V_GEN)rm -f $@-t $@ && \ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \ sed -e 's|@''GUARD_PREFIX''@|${gl_include_guard_prefix}|g' \ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \ -e 's|@''NEXT_ERRNO_H''@|$(NEXT_ERRNO_H)|g' \ -e 's|@''EMULTIHOP_HIDDEN''@|$(EMULTIHOP_HIDDEN)|g' \ -e 's|@''EMULTIHOP_VALUE''@|$(EMULTIHOP_VALUE)|g' \ -e 's|@''ENOLINK_HIDDEN''@|$(ENOLINK_HIDDEN)|g' \ -e 's|@''ENOLINK_VALUE''@|$(ENOLINK_VALUE)|g' \ -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \ -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \ < $(srcdir)/errno.in.h; \ } > $@-t && \ mv $@-t $@ else errno.h: $(top_builddir)/config.status rm -f $@ endif MOSTLYCLEANFILES += errno.h errno.h-t Include: <errno.h> License: LGPLv2+ Maintainer: Bruno Haible