gnu-versions.h 2.3 KB

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  1. /* Header with interface version macros for library pieces copied elsewhere.
  2. Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #ifndef _GNU_VERSIONS_H
  16. #define _GNU_VERSIONS_H 1
  17. /* This file exists to define these few macros. Each specifies a version
  18. number associated with the library interface of a piece of the C library
  19. which is also distributed with other GNU packages. These pieces are
  20. both part of the GNU C library and also distributed with other GNU
  21. packages so those packages may use their facilities on systems lacking
  22. the GNU C library. The source files for each piece surround all their
  23. code with `#ifndef ELIDE_CODE' after defining it with this:
  24. #define OBSTACK_INTERFACE_VERSION 1
  25. #if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
  26. #include <gnu-versions.h>
  27. #if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
  28. #define ELIDE_CODE
  29. #endif
  30. #endif
  31. This allows those one to avoid compiling those files when part of a GNU
  32. package not libc, on a system using a GNU C library that supports the
  33. same interface.
  34. Please preserve the format of the comments after each macro. And
  35. remember, if any of these versions change, the libc.so major version
  36. number must change too (so avoid it)! */
  37. #define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */
  38. #ifdef __UCLIBC_HAS_GNU_GLOB__
  39. #define _GNU_GLOB_INTERFACE_VERSION 1 /* vs posix/glob.c */
  40. #endif
  41. #define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and
  42. posix/getopt1.c */
  43. #endif /* gnu-versions.h */