Mercurial > gnulib
view lib/vasnprintf.h @ 40206:770a5696761e
relocatable-prog: Use wrapper-free installation on Mac OS X, take 2.
This approach supports relocatable installation of shared libraries
which depend on other shared libraries from the same package.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Determine use_macos_tools.
If use_macos_tools is true, use reloc-ldflags and set LIBTOOL to be a
wrapper around the original LIBTOOL.
* build-aux/reloc-ldflags: Add support for Mac OS X, which uses the
token '@loader_path' instead of '$ORIGIN'.
* build-aux/libtool-reloc: New file.
* modules/relocatable-prog (Files): Add it.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes. Document the need to set the *_LDFLAGS of libraries.
RELOCATABLE_LIBRARY_PATH and RELOCATABLE_CONFIG_H_DIR should be set in
Makefile.am, not in configure.ac.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 04 Mar 2019 17:25:09 +0100 |
parents | b06060465f09 |
children |
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/* vsprintf with automatic memory allocation. Copyright (C) 2002-2004, 2007-2019 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <https://www.gnu.org/licenses/>. */ #ifndef _VASNPRINTF_H #define _VASNPRINTF_H /* Get va_list. */ #include <stdarg.h> /* Get size_t. */ #include <stddef.h> /* The __attribute__ feature is available in gcc versions 2.5 and later. The __-protected variants of the attributes 'format' and 'printf' are accepted by gcc versions 2.6.4 (effectively 2.7) and later. We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because gnulib and libintl do '#define printf __printf__' when they override the 'printf' function. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) # define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) #else # define _GL_ATTRIBUTE_FORMAT(spec) /* empty */ #endif #ifdef __cplusplus extern "C" { #endif /* Write formatted output to a string dynamically allocated with malloc(). You can pass a preallocated buffer for the result in RESULTBUF and its size in *LENGTHP; otherwise you pass RESULTBUF = NULL. If successful, return the address of the string (this may be = RESULTBUF if no dynamic memory allocation was necessary) and set *LENGTHP to the number of resulting bytes, excluding the trailing NUL. Upon error, set errno and return NULL. When dynamic memory allocation occurs, the preallocated buffer is left alone (with possibly modified contents). This makes it possible to use a statically allocated or stack-allocated buffer, like this: char buf[100]; size_t len = sizeof (buf); char *output = vasnprintf (buf, &len, format, args); if (output == NULL) ... error handling ...; else { ... use the output string ...; if (output != buf) free (output); } */ #if REPLACE_VASNPRINTF # define asnprintf rpl_asnprintf # define vasnprintf rpl_vasnprintf #endif extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...) _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4)); extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args) _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 0)); #ifdef __cplusplus } #endif #endif /* _VASNPRINTF_H */