Mercurial > gnulib
view lib/dummy.c @ 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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/* A dummy file, to prevent empty libraries from breaking builds. Copyright (C) 2004, 2007, 2009-2019 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 3 of the License, 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/>. */ /* Some systems, reportedly OpenBSD and Mac OS X, refuse to create libraries without any object files. You might get an error like: > ar cru .libs/libgl.a > ar: no archive members specified Compiling this file, and adding its object file to the library, will prevent the library from being empty. */ /* Some systems, such as Solaris with cc 5.0, refuse to work with libraries that don't export any symbol. You might get an error like: > cc ... libgnu.a > ild: (bad file) garbled symbol table in archive ../gllib/libgnu.a Compiling this file, and adding its object file to the library, will prevent the library from exporting no symbols. */ #ifdef __sun /* This declaration ensures that the library will export at least 1 symbol. */ int gl_dummy_symbol; #else /* This declaration is solely to ensure that after preprocessing this file is never empty. */ typedef int dummy; #endif