diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/dl-librecon.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/dl-librecon.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/dl-librecon.h b/sysdeps/unix/sysv/linux/i386/dl-librecon.h new file mode 100644 index 0000000000..ef2c4bb632 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/dl-librecon.h @@ -0,0 +1,57 @@ +/* Optional code to distinguish library flavours. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _DL_LIBRECON_H +#define _DL_LIBRECON_H 1 + +#define DISTINGUISH_LIB_VERSIONS \ + do \ + { \ + /* We have to find out whether the binary is linked against \ + libc 5 or glibc. We do this by looking at all the DT_NEEDED \ + entries. If one is libc.so.5 this is a libc 5 linked binary. */ \ + if (main_map->l_info[DT_NEEDED]) \ + { \ + /* We have dependencies. */ \ + const char *strtab = ((void *) main_map->l_addr \ + + main_map->l_info[DT_STRTAB]->d_un.d_ptr); \ + const ElfW(Dyn) *d; \ + \ + for (d = main_map->l_ld; d->d_tag != DT_NULL; ++d) \ + if (d->d_tag == DT_NEEDED \ + && strcmp (strtab + d->d_un.d_val, "libc.so.5") == 0) \ + break; \ + \ + /* We print a `5' or `6' depending on the outcome. */ \ + _dl_sysdep_message (d->d_tag != DT_NULL ? "5\n" : "6\n", NULL); \ + } \ + } \ + while (0) + +/* Recognizing extra environment variables. */ +#define EXTRA_LD_ENVVARS \ + case 15: \ + if (memcmp (&envline[3], "LIBRARY_VERSION", 15) == 0) \ + { \ + _dl_correct_cache_id = envline[19] == '5' ? 2 : 3; \ + break; \ + } + +#endif /* dl-librecon.h */ |