kc3-lang/gnulib/build-aux/snippet/link-warning.h

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• Hash : 5b92dd0a
  Author :
  Date : 2024-01-01T10:31:48
  

  maint: run 'make update-copyright'
  

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• build-aux/snippet/link-warning.h

• /* A C macro for emitting link time warnings.
     Copyright (C) 1995, 1997, 2000, 2002-2003, 2007, 2009-2024 Free Software
     Foundation, Inc.
  
     This program 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 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
     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 @HAVE_FEATURES_H@
  # include <features.h> /* for __GLIBC__, __UCLIBC__ */
  #endif
  
  /* GL_LINK_WARNING("literal string") arranges to emit the literal string as
     a linker warning on most glibc systems.
     We use a linker warning rather than a preprocessor warning, because
     #warning cannot be used inside macros.  */
  #ifndef GL_LINK_WARNING
    /* This works on platforms with GNU ld and ELF object format.
       Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
       Testing __ELF__ guarantees the ELF object format.
       Testing __GNUC__ is necessary for the compound expression syntax.  */
  # if (defined __GLIBC__ || defined __UCLIBC__) && defined __ELF__ && defined __GNUC__
  #  define GL_LINK_WARNING(message) \
       GL_LINK_WARNING1 (__FILE__, __LINE__, message)
  #  define GL_LINK_WARNING1(file, line, message) \
       GL_LINK_WARNING2 (file, line, message)  /* macroexpand file and line */
  #  define GL_LINK_WARNING2(file, line, message) \
       GL_LINK_WARNING3 (file ":" #line ": warning: " message)
  #  define GL_LINK_WARNING3(message) \
       ({ static const char warning[sizeof (message)]             \
            __attribute__ ((__unused__,                           \
                            __section__ (".gnu.warning"),         \
                            __aligned__ (1)))                     \
            = message "\n";                                       \
          (void)0;                                                \
       })
  # else
  #  define GL_LINK_WARNING(message) ((void) 0)
  # endif
  #endif
  

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