glibc/sysdeps/unix/sysv/linux/dl-librecon.h

50 lines
1.8 KiB
C

/* Optional code to distinguish library flavours.
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
The GNU C Library 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 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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
/* Recognizing extra environment variables. */
#define EXTRA_LD_ENVVARS \
case 13: \
if (memcmp (&envline[3], "ASSUME_KERNEL", 13) == 0) \
{ \
unsigned long int i, j, osversion = 0; \
char *p = &envline[17], *q; \
\
for (i = 0; i < 3; i++, p = q + 1) \
{ \
j = __strtoul_internal (p, &q, 0, 0); \
if (j >= 255 || p == q || (i < 2 && *q && *q != '.')) \
{ \
osversion = 0; \
break; \
} \
osversion |= j << (16 - 8 * i); \
if (!*q) \
break; \
} \
if (osversion) \
_dl_osversion = osversion; \
break; \
}
#endif /* dl-librecon.h */