Adjust for changes to getaddrinfo.c.
[kopensolaris-gnu/glibc.git] / posix / getconf.c
index 4c3d917..66e582e 100644 (file)
@@ -1,20 +1,18 @@
-/* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 1995-2005, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   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.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation.
 
-   The GNU C Library is distributed in the hope that it will be useful,
+   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
-   Library General Public License for more details.
+   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 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.  */
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include <unistd.h>
 #include <errno.h>
@@ -37,212 +35,958 @@ struct conf
 
 static const struct conf vars[] =
   {
+#ifdef _PC_LINK_MAX
     { "LINK_MAX", _PC_LINK_MAX, PATHCONF },
+#endif
+#ifdef _PC_LINK_MAX
     { "_POSIX_LINK_MAX", _PC_LINK_MAX, PATHCONF },
+#endif
+#ifdef _PC_MAX_CANON
     { "MAX_CANON", _PC_MAX_CANON, PATHCONF },
+#endif
+#ifdef _PC_MAX_CANON
     { "_POSIX_MAX_CANON", _PC_MAX_CANON, PATHCONF },
+#endif
+#ifdef _PC_MAX_INPUT
     { "MAX_INPUT", _PC_MAX_INPUT, PATHCONF },
+#endif
+#ifdef _PC_MAX_INPUT
     { "_POSIX_MAX_INPUT", _PC_MAX_INPUT, PATHCONF },
+#endif
+#ifdef _PC_NAME_MAX
     { "NAME_MAX", _PC_NAME_MAX, PATHCONF },
+#endif
+#ifdef _PC_NAME_MAX
     { "_POSIX_NAME_MAX", _PC_NAME_MAX, PATHCONF },
+#endif
+#ifdef _PC_PATH_MAX
     { "PATH_MAX", _PC_PATH_MAX, PATHCONF },
+#endif
+#ifdef _PC_PATH_MAX
     { "_POSIX_PATH_MAX", _PC_PATH_MAX, PATHCONF },
+#endif
+#ifdef _PC_PIPE_BUF
     { "PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
+#endif
+#ifdef _PC_PIPE_BUF
     { "_POSIX_PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
+#endif
+#ifdef _PC_SOCK_MAXBUF
     { "SOCK_MAXBUF", _PC_SOCK_MAXBUF, PATHCONF },
+#endif
+#ifdef _PC_ASYNC_IO
     { "_POSIX_ASYNC_IO", _PC_ASYNC_IO, PATHCONF },
+#endif
+#ifdef _PC_CHOWN_RESTRICTED
     { "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED, PATHCONF },
+#endif
+#ifdef _PC_NO_TRUNC
     { "_POSIX_NO_TRUNC", _PC_NO_TRUNC, PATHCONF },
+#endif
+#ifdef _PC_PRIO_IO
     { "_POSIX_PRIO_IO", _PC_PRIO_IO, PATHCONF },
+#endif
+#ifdef _PC_SYNC_IO
     { "_POSIX_SYNC_IO", _PC_SYNC_IO, PATHCONF },
+#endif
+#ifdef _PC_VDISABLE
     { "_POSIX_VDISABLE", _PC_VDISABLE, PATHCONF },
+#endif
 
+#ifdef _SC_ARG_MAX
     { "ARG_MAX", _SC_ARG_MAX, SYSCONF },
+#endif
+#ifdef _SC_ATEXIT_MAX
     { "ATEXIT_MAX", _SC_ATEXIT_MAX, SYSCONF },
+#endif
+#ifdef _SC_CHAR_BIT
     { "CHAR_BIT", _SC_CHAR_BIT, SYSCONF },
+#endif
+#ifdef _SC_CHAR_MAX
     { "CHAR_MAX", _SC_CHAR_MAX, SYSCONF },
+#endif
+#ifdef _SC_CHAR_MIN
     { "CHAR_MIN", _SC_CHAR_MIN, SYSCONF },
+#endif
+#ifdef _SC_CHILD_MAX
     { "CHILD_MAX", _SC_CHILD_MAX, SYSCONF },
+#endif
+#ifdef _SC_CLK_TCK
     { "CLK_TCK", _SC_CLK_TCK, SYSCONF },
+#endif
+#ifdef _SC_INT_MAX
     { "INT_MAX", _SC_INT_MAX, SYSCONF },
+#endif
+#ifdef _SC_INT_MIN
     { "INT_MIN", _SC_INT_MIN, SYSCONF },
+#endif
+#ifdef _SC_UIO_MAXIOV
     { "IOV_MAX", _SC_UIO_MAXIOV, SYSCONF },
+#endif
+#ifdef _SC_LOGIN_NAME_MAX
     { "LOGNAME_MAX", _SC_LOGIN_NAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_LONG_BIT
     { "LONG_BIT", _SC_LONG_BIT, SYSCONF },
+#endif
+#ifdef _SC_MB_LEN_MAX
     { "MB_LEN_MAX", _SC_MB_LEN_MAX, SYSCONF },
+#endif
+#ifdef _SC_NGROUPS_MAX
     { "NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF },
+#endif
+#ifdef _SC_NL_ARGMAX
     { "NL_ARGMAX", _SC_NL_ARGMAX, SYSCONF },
+#endif
+#ifdef _SC_NL_LANGMAX
     { "NL_LANGMAX", _SC_NL_LANGMAX, SYSCONF },
+#endif
+#ifdef _SC_NL_MSGMAX
     { "NL_MSGMAX", _SC_NL_MSGMAX, SYSCONF },
+#endif
+#ifdef _SC_NL_NMAX
     { "NL_NMAX", _SC_NL_NMAX, SYSCONF },
+#endif
+#ifdef _SC_NL_SETMAX
     { "NL_SETMAX", _SC_NL_SETMAX, SYSCONF },
+#endif
+#ifdef _SC_NL_TEXTMAX
     { "NL_TEXTMAX", _SC_NL_TEXTMAX, SYSCONF },
+#endif
+#ifdef _SC_GETGR_R_SIZE_MAX
     { "NSS_BUFLEN_GROUP", _SC_GETGR_R_SIZE_MAX, SYSCONF },
+#endif
+#ifdef _SC_GETPW_R_SIZE_MAX
     { "NSS_BUFLEN_PASSWD", _SC_GETPW_R_SIZE_MAX, SYSCONF },
+#endif
+#ifdef _SC_NZERO
     { "NZERO", _SC_NZERO, SYSCONF },
+#endif
+#ifdef _SC_OPEN_MAX
     { "OPEN_MAX", _SC_OPEN_MAX, SYSCONF },
+#endif
+#ifdef _SC_PAGESIZE
     { "PAGESIZE", _SC_PAGESIZE, SYSCONF },
+#endif
+#ifdef _SC_PAGESIZE
     { "PAGE_SIZE", _SC_PAGESIZE, SYSCONF },
+#endif
+#ifdef _SC_PASS_MAX
     { "PASS_MAX", _SC_PASS_MAX, SYSCONF },
+#endif
+#ifdef _SC_THREAD_DESTRUCTOR_ITERATIONS
     { "PTHREAD_DESTRUCTOR_ITERATIONS", _SC_THREAD_DESTRUCTOR_ITERATIONS, SYSCONF },
+#endif
+#ifdef _SC_THREAD_KEYS_MAX
     { "PTHREAD_KEYS_MAX", _SC_THREAD_KEYS_MAX, SYSCONF },
+#endif
+#ifdef _SC_THREAD_STACK_MIN
     { "PTHREAD_STACK_MIN", _SC_THREAD_STACK_MIN, SYSCONF },
+#endif
+#ifdef _SC_THREAD_THREADS_MAX
     { "PTHREAD_THREADS_MAX", _SC_THREAD_THREADS_MAX, SYSCONF },
+#endif
+#ifdef _SC_SCHAR_MAX
     { "SCHAR_MAX", _SC_SCHAR_MAX, SYSCONF },
+#endif
+#ifdef _SC_SCHAR_MIN
     { "SCHAR_MIN", _SC_SCHAR_MIN, SYSCONF },
+#endif
+#ifdef _SC_SHRT_MAX
     { "SHRT_MAX", _SC_SHRT_MAX, SYSCONF },
+#endif
+#ifdef _SC_SHRT_MIN
     { "SHRT_MIN", _SC_SHRT_MIN, SYSCONF },
+#endif
+#ifdef _SC_SSIZE_MAX
     { "SSIZE_MAX", _SC_SSIZE_MAX, SYSCONF },
+#endif
+#ifdef _SC_TTY_NAME_MAX
     { "TTY_NAME_MAX", _SC_TTY_NAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_TZNAME_MAX
     { "TZNAME_MAX", _SC_TZNAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_UCHAR_MAX
     { "UCHAR_MAX", _SC_UCHAR_MAX, SYSCONF },
+#endif
+#ifdef _SC_UINT_MAX
     { "UINT_MAX", _SC_UINT_MAX, SYSCONF },
+#endif
+#ifdef _SC_UIO_MAXIOV
     { "UIO_MAXIOV", _SC_UIO_MAXIOV, SYSCONF },
+#endif
+#ifdef _SC_ULONG_MAX
     { "ULONG_MAX", _SC_ULONG_MAX, SYSCONF },
+#endif
+#ifdef _SC_USHRT_MAX
     { "USHRT_MAX", _SC_USHRT_MAX, SYSCONF },
+#endif
+#ifdef _SC_WORD_BIT
     { "WORD_BIT", _SC_WORD_BIT, SYSCONF },
+#endif
+#ifdef _SC_AVPHYS_PAGES
     { "_AVPHYS_PAGES", _SC_AVPHYS_PAGES, SYSCONF },
+#endif
+#ifdef _SC_NPROCESSORS_CONF
     { "_NPROCESSORS_CONF", _SC_NPROCESSORS_CONF, SYSCONF },
+#endif
+#ifdef _SC_NPROCESSORS_ONLN
     { "_NPROCESSORS_ONLN", _SC_NPROCESSORS_ONLN, SYSCONF },
+#endif
+#ifdef _SC_PHYS_PAGES
     { "_PHYS_PAGES", _SC_PHYS_PAGES, SYSCONF },
+#endif
+#ifdef _SC_ARG_MAX
     { "_POSIX_ARG_MAX", _SC_ARG_MAX, SYSCONF },
+#endif
+#ifdef _SC_ASYNCHRONOUS_IO
     { "_POSIX_ASYNCHRONOUS_IO", _SC_ASYNCHRONOUS_IO, SYSCONF },
+#endif
+#ifdef _SC_CHILD_MAX
     { "_POSIX_CHILD_MAX", _SC_CHILD_MAX, SYSCONF },
+#endif
+#ifdef _SC_FSYNC
     { "_POSIX_FSYNC", _SC_FSYNC, SYSCONF },
+#endif
+#ifdef _SC_JOB_CONTROL
     { "_POSIX_JOB_CONTROL", _SC_JOB_CONTROL, SYSCONF },
+#endif
+#ifdef _SC_MAPPED_FILES
     { "_POSIX_MAPPED_FILES", _SC_MAPPED_FILES, SYSCONF },
+#endif
+#ifdef _SC_MEMLOCK
     { "_POSIX_MEMLOCK", _SC_MEMLOCK, SYSCONF },
+#endif
+#ifdef _SC_MEMLOCK_RANGE
     { "_POSIX_MEMLOCK_RANGE", _SC_MEMLOCK_RANGE, SYSCONF },
+#endif
+#ifdef _SC_MEMORY_PROTECTION
     { "_POSIX_MEMORY_PROTECTION", _SC_MEMORY_PROTECTION, SYSCONF },
+#endif
+#ifdef _SC_MESSAGE_PASSING
     { "_POSIX_MESSAGE_PASSING", _SC_MESSAGE_PASSING, SYSCONF },
+#endif
+#ifdef _SC_NGROUPS_MAX
     { "_POSIX_NGROUPS_MAX", _SC_NGROUPS_MAX, SYSCONF },
+#endif
+#ifdef _SC_OPEN_MAX
     { "_POSIX_OPEN_MAX", _SC_OPEN_MAX, SYSCONF },
+#endif
+#ifdef _SC_PII
     { "_POSIX_PII", _SC_PII, SYSCONF },
+#endif
+#ifdef _SC_PII_INTERNET
     { "_POSIX_PII_INTERNET", _SC_PII_INTERNET, SYSCONF },
+#endif
+#ifdef _SC_PII_INTERNET_DGRAM
     { "_POSIX_PII_INTERNET_DGRAM", _SC_PII_INTERNET_DGRAM, SYSCONF },
+#endif
+#ifdef _SC_PII_INTERNET_STREAM
     { "_POSIX_PII_INTERNET_STREAM", _SC_PII_INTERNET_STREAM, SYSCONF },
+#endif
+#ifdef _SC_PII_OSI
     { "_POSIX_PII_OSI", _SC_PII_OSI, SYSCONF },
+#endif
+#ifdef _SC_PII_OSI_CLTS
     { "_POSIX_PII_OSI_CLTS", _SC_PII_OSI_CLTS, SYSCONF },
+#endif
+#ifdef _SC_PII_OSI_COTS
     { "_POSIX_PII_OSI_COTS", _SC_PII_OSI_COTS, SYSCONF },
+#endif
+#ifdef _SC_PII_OSI_M
     { "_POSIX_PII_OSI_M", _SC_PII_OSI_M, SYSCONF },
+#endif
+#ifdef _SC_PII_SOCKET
     { "_POSIX_PII_SOCKET", _SC_PII_SOCKET, SYSCONF },
+#endif
+#ifdef _SC_PII_XTI
     { "_POSIX_PII_XTI", _SC_PII_XTI, SYSCONF },
+#endif
+#ifdef _SC_POLL
     { "_POSIX_POLL", _SC_POLL, SYSCONF },
+#endif
+#ifdef _SC_PRIORITIZED_IO
     { "_POSIX_PRIORITIZED_IO", _SC_PRIORITIZED_IO, SYSCONF },
+#endif
+#ifdef _SC_PRIORITY_SCHEDULING
     { "_POSIX_PRIORITY_SCHEDULING", _SC_PRIORITY_SCHEDULING, SYSCONF },
+#endif
+#ifdef _SC_REALTIME_SIGNALS
     { "_POSIX_REALTIME_SIGNALS", _SC_REALTIME_SIGNALS, SYSCONF },
+#endif
+#ifdef _SC_SAVED_IDS
     { "_POSIX_SAVED_IDS", _SC_SAVED_IDS, SYSCONF },
+#endif
+#ifdef _SC_SELECT
     { "_POSIX_SELECT", _SC_SELECT, SYSCONF },
+#endif
+#ifdef _SC_SEMAPHORES
     { "_POSIX_SEMAPHORES", _SC_SEMAPHORES, SYSCONF },
+#endif
+#ifdef _SC_SHARED_MEMORY_OBJECTS
     { "_POSIX_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS, SYSCONF },
+#endif
+#ifdef _SC_SSIZE_MAX
     { "_POSIX_SSIZE_MAX", _SC_SSIZE_MAX, SYSCONF },
+#endif
+#ifdef _SC_STREAM_MAX
     { "_POSIX_STREAM_MAX", _SC_STREAM_MAX, SYSCONF },
+#endif
+#ifdef _SC_SYNCHRONIZED_IO
     { "_POSIX_SYNCHRONIZED_IO", _SC_SYNCHRONIZED_IO, SYSCONF },
+#endif
+#ifdef _SC_THREADS
     { "_POSIX_THREADS", _SC_THREADS, SYSCONF },
+#endif
+#ifdef _SC_THREAD_ATTR_STACKADDR
     { "_POSIX_THREAD_ATTR_STACKADDR", _SC_THREAD_ATTR_STACKADDR, SYSCONF },
+#endif
+#ifdef _SC_THREAD_ATTR_STACKSIZE
     { "_POSIX_THREAD_ATTR_STACKSIZE", _SC_THREAD_ATTR_STACKSIZE, SYSCONF },
+#endif
+#ifdef _SC_THREAD_PRIORITY_SCHEDULING
     { "_POSIX_THREAD_PRIORITY_SCHEDULING", _SC_THREAD_PRIORITY_SCHEDULING, SYSCONF },
+#endif
+#ifdef _SC_THREAD_PRIO_INHERIT
     { "_POSIX_THREAD_PRIO_INHERIT", _SC_THREAD_PRIO_INHERIT, SYSCONF },
+#endif
+#ifdef _SC_THREAD_PRIO_PROTECT
     { "_POSIX_THREAD_PRIO_PROTECT", _SC_THREAD_PRIO_PROTECT, SYSCONF },
+#endif
+#ifdef _SC_THREAD_PROCESS_SHARED
     { "_POSIX_THREAD_PROCESS_SHARED", _SC_THREAD_PROCESS_SHARED, SYSCONF },
+#endif
+#ifdef _SC_THREAD_SAFE_FUNCTIONS
     { "_POSIX_THREAD_SAFE_FUNCTIONS", _SC_THREAD_SAFE_FUNCTIONS, SYSCONF },
+#endif
+#ifdef _SC_TIMERS
     { "_POSIX_TIMERS", _SC_TIMERS, SYSCONF },
+#endif
+#ifdef _SC_TIMER_MAX
+    { "TIMER_MAX", _SC_TIMER_MAX, SYSCONF },
+#endif
+#ifdef _SC_TZNAME_MAX
     { "_POSIX_TZNAME_MAX", _SC_TZNAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_VERSION
     { "_POSIX_VERSION", _SC_VERSION, SYSCONF },
+#endif
+#ifdef _SC_T_IOV_MAX
     { "_T_IOV_MAX", _SC_T_IOV_MAX, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_CRYPT
     { "_XOPEN_CRYPT", _SC_XOPEN_CRYPT, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_ENH_I18N
     { "_XOPEN_ENH_I18N", _SC_XOPEN_ENH_I18N, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_LEGACY
     { "_XOPEN_LEGACY", _SC_XOPEN_LEGACY, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_REALTIME
     { "_XOPEN_REALTIME", _SC_XOPEN_REALTIME, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_REALTIME_THREADS
     { "_XOPEN_REALTIME_THREADS", _SC_XOPEN_REALTIME_THREADS, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_SHM
     { "_XOPEN_SHM", _SC_XOPEN_SHM, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_UNIX
     { "_XOPEN_UNIX", _SC_XOPEN_UNIX, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_VERSION
     { "_XOPEN_VERSION", _SC_XOPEN_VERSION, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_XCU_VERSION
     { "_XOPEN_XCU_VERSION", _SC_XOPEN_XCU_VERSION, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_XPG2
     { "_XOPEN_XPG2", _SC_XOPEN_XPG2, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_XPG3
     { "_XOPEN_XPG3", _SC_XOPEN_XPG3, SYSCONF },
+#endif
+#ifdef _SC_XOPEN_XPG4
     { "_XOPEN_XPG4", _SC_XOPEN_XPG4, SYSCONF },
+#endif
     /* POSIX.2  */
+#ifdef _SC_BC_BASE_MAX
     { "BC_BASE_MAX", _SC_BC_BASE_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_DIM_MAX
     { "BC_DIM_MAX", _SC_BC_DIM_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_SCALE_MAX
     { "BC_SCALE_MAX", _SC_BC_SCALE_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_STRING_MAX
     { "BC_STRING_MAX", _SC_BC_STRING_MAX, SYSCONF },
-    { "CHARCLASS_NAME_MAX", _SC_CHARCLASS_NAME_MAX },
+#endif
+    { "CHARCLASS_NAME_MAX", _SC_CHARCLASS_NAME_MAX, SYSCONF },
+#ifdef _SC_COLL_WEIGHTS_MAX
     { "COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX, SYSCONF },
+#endif
+#ifdef _SC_EQUIV_CLASS_MAX
     { "EQUIV_CLASS_MAX", _SC_EQUIV_CLASS_MAX, SYSCONF },
+#endif
+#ifdef _SC_EXPR_NEST_MAX
     { "EXPR_NEST_MAX", _SC_EXPR_NEST_MAX, SYSCONF },
+#endif
+#ifdef _SC_LINE_MAX
     { "LINE_MAX", _SC_LINE_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_BASE_MAX
     { "POSIX2_BC_BASE_MAX", _SC_BC_BASE_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_DIM_MAX
     { "POSIX2_BC_DIM_MAX", _SC_BC_DIM_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_SCALE_MAX
     { "POSIX2_BC_SCALE_MAX", _SC_BC_SCALE_MAX, SYSCONF },
+#endif
+#ifdef _SC_BC_STRING_MAX
     { "POSIX2_BC_STRING_MAX", _SC_BC_STRING_MAX, SYSCONF },
+#endif
+#ifdef _SC_2_CHAR_TERM
     { "POSIX2_CHAR_TERM", _SC_2_CHAR_TERM, SYSCONF },
+#endif
+#ifdef _SC_COLL_WEIGHTS_MAX
     { "POSIX2_COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX, SYSCONF },
+#endif
+#ifdef _SC_2_C_BIND
     { "POSIX2_C_BIND", _SC_2_C_BIND, SYSCONF },
+#endif
+#ifdef _SC_2_C_DEV
     { "POSIX2_C_DEV", _SC_2_C_DEV, SYSCONF },
+#endif
+#ifdef _SC_2_C_VERSION
     { "POSIX2_C_VERSION", _SC_2_C_VERSION, SYSCONF },
+#endif
+#ifdef _SC_EXPR_NEST_MAX
     { "POSIX2_EXPR_NEST_MAX", _SC_EXPR_NEST_MAX, SYSCONF },
+#endif
+#ifdef _SC_2_FORT_DEV
     { "POSIX2_FORT_DEV", _SC_2_FORT_DEV, SYSCONF },
+#endif
+#ifdef _SC_2_FORT_RUN
     { "POSIX2_FORT_RUN", _SC_2_FORT_RUN, SYSCONF },
-    { "POSIX2_LINE_MAX", _SC_LINE_MAX, SYSCONF },
+#endif
+#ifdef _SC_LINE_MAX
+    { "_POSIX2_LINE_MAX", _SC_LINE_MAX, SYSCONF },
+#endif
+#ifdef _SC_2_LOCALEDEF
     { "POSIX2_LOCALEDEF", _SC_2_LOCALEDEF, SYSCONF },
+#endif
+#ifdef _SC_RE_DUP_MAX
     { "POSIX2_RE_DUP_MAX", _SC_RE_DUP_MAX, SYSCONF },
+#endif
+#ifdef _SC_2_SW_DEV
     { "POSIX2_SW_DEV", _SC_2_SW_DEV, SYSCONF },
+#endif
+#ifdef _SC_2_UPE
     { "POSIX2_UPE", _SC_2_UPE, SYSCONF },
+#endif
+#ifdef _SC_2_VERSION
     { "POSIX2_VERSION", _SC_2_VERSION, SYSCONF },
+#endif
+#ifdef _SC_RE_DUP_MAX
     { "RE_DUP_MAX", _SC_RE_DUP_MAX, SYSCONF },
+#endif
 
+#ifdef _CS_PATH
     { "PATH", _CS_PATH, CONFSTR },
     { "CS_PATH", _CS_PATH, CONFSTR },
+#endif
 
     /* LFS */
+#ifdef _CS_LFS_CFLAGS
     { "LFS_CFLAGS", _CS_LFS_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_LFS_LDFLAGS
     { "LFS_LDFLAGS", _CS_LFS_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_LFS_LIBS
     { "LFS_LIBS", _CS_LFS_LIBS, CONFSTR },
+#endif
+#ifdef _CS_LFS_LINTFLAGS
     { "LFS_LINTFLAGS", _CS_LFS_LINTFLAGS, CONFSTR },
+#endif
+#ifdef _CS_LFS64_CFLAGS
     { "LFS64_CFLAGS", _CS_LFS64_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_LFS64_LDFLAGS
     { "LFS64_LDFLAGS", _CS_LFS64_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_LFS64_LIBS
     { "LFS64_LIBS", _CS_LFS64_LIBS, CONFSTR },
+#endif
+#ifdef _CS_LFS64_LINTFLAGS
     { "LFS64_LINTFLAGS", _CS_LFS64_LINTFLAGS, CONFSTR },
+#endif
 
     /* Programming environments.  */
-    { "XBS5_ILP32_OFF32", _SC_XBS5_ILP32_OFF32, SYSCONF },
+#ifdef _SC_XBS5_ILP32_OFF32
+    { "_XBS5_ILP32_OFF32", _SC_XBS5_ILP32_OFF32, SYSCONF },
+#endif
+#ifdef _CS_XBS5_ILP32_OFF32_CFLAGS
     { "XBS5_ILP32_OFF32_CFLAGS", _CS_XBS5_ILP32_OFF32_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFF32_LDFLAGS
     { "XBS5_ILP32_OFF32_LDFLAGS", _CS_XBS5_ILP32_OFF32_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFF32_LIBS
     { "XBS5_ILP32_OFF32_LIBS", _CS_XBS5_ILP32_OFF32_LIBS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFF32_LINTFLAGS
     { "XBS5_ILP32_OFF32_LINTFLAGS", _CS_XBS5_ILP32_OFF32_LINTFLAGS, CONFSTR },
+#endif
 
-    { "XBS5_ILP32_OFFBIG", _SC_XBS5_ILP32_OFFBIG, SYSCONF },
+#ifdef _SC_XBS5_ILP32_OFFBIG
+    { "_XBS5_ILP32_OFFBIG", _SC_XBS5_ILP32_OFFBIG, SYSCONF },
+#endif
+#ifdef _CS_XBS5_ILP32_OFFBIG_CFLAGS
     { "XBS5_ILP32_OFFBIG_CFLAGS", _CS_XBS5_ILP32_OFFBIG_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFFBIG_LDFLAGS
     { "XBS5_ILP32_OFFBIG_LDFLAGS", _CS_XBS5_ILP32_OFFBIG_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFFBIG_LIBS
     { "XBS5_ILP32_OFFBIG_LIBS", _CS_XBS5_ILP32_OFFBIG_LIBS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_ILP32_OFFBIG_LINTFLAGS
     { "XBS5_ILP32_OFFBIG_LINTFLAGS", _CS_XBS5_ILP32_OFFBIG_LINTFLAGS, CONFSTR },
+#endif
 
-    { "XBS5_LP64_OFF64", _SC_XBS5_LP64_OFF64, SYSCONF },
+#ifdef _SC_XBS5_LP64_OFF64
+    { "_XBS5_LP64_OFF64", _SC_XBS5_LP64_OFF64, SYSCONF },
+#endif
+#ifdef _CS_XBS5_LP64_OFF64_CFLAGS
     { "XBS5_LP64_OFF64_CFLAGS", _CS_XBS5_LP64_OFF64_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LP64_OFF64_LDFLAGS
     { "XBS5_LP64_OFF64_LDFLAGS", _CS_XBS5_LP64_OFF64_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LP64_OFF64_LIBS
     { "XBS5_LP64_OFF64_LIBS", _CS_XBS5_LP64_OFF64_LIBS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LP64_OFF64_LINTFLAGS
     { "XBS5_LP64_OFF64_LINTFLAGS", _CS_XBS5_LP64_OFF64_LINTFLAGS, CONFSTR },
+#endif
 
-    { "XBS5_LPBIG_OFFBIG", _SC_XBS5_LPBIG_OFFBIG, SYSCONF },
+#ifdef _SC_XBS5_LPBIG_OFFBIG
+    { "_XBS5_LPBIG_OFFBIG", _SC_XBS5_LPBIG_OFFBIG, SYSCONF },
+#endif
+#ifdef _CS_XBS5_LPBIG_OFFBIG_CFLAGS
     { "XBS5_LPBIG_OFFBIG_CFLAGS", _CS_XBS5_LPBIG_OFFBIG_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LPBIG_OFFBIG_LDFLAGS
     { "XBS5_LPBIG_OFFBIG_LDFLAGS", _CS_XBS5_LPBIG_OFFBIG_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LPBIG_OFFBIG_LIBS
     { "XBS5_LPBIG_OFFBIG_LIBS", _CS_XBS5_LPBIG_OFFBIG_LIBS, CONFSTR },
+#endif
+#ifdef _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS
     { "XBS5_LPBIG_OFFBIG_LINTFLAGS", _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS, CONFSTR },
+#endif
+
+#ifdef _SC_V6_ILP32_OFF32
+    { "_POSIX_V6_ILP32_OFF32", _SC_V6_ILP32_OFF32, SYSCONF },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFF32_CFLAGS
+    { "POSIX_V6_ILP32_OFF32_CFLAGS", _CS_POSIX_V6_ILP32_OFF32_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFF32_LDFLAGS
+    { "POSIX_V6_ILP32_OFF32_LDFLAGS", _CS_POSIX_V6_ILP32_OFF32_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFF32_LIBS
+    { "POSIX_V6_ILP32_OFF32_LIBS", _CS_POSIX_V6_ILP32_OFF32_LIBS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS
+    { "POSIX_V6_ILP32_OFF32_LINTFLAGS", _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS, CONFSTR },
+#endif
+
+#ifdef _CS_V6_WIDTH_RESTRICTED_ENVS
+    { "_POSIX_V6_WIDTH_RESTRICTED_ENVS", _CS_V6_WIDTH_RESTRICTED_ENVS, CONFSTR },
+#endif
+
+#ifdef _SC_V6_ILP32_OFFBIG
+    { "_POSIX_V6_ILP32_OFFBIG", _SC_V6_ILP32_OFFBIG, SYSCONF },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS
+    { "POSIX_V6_ILP32_OFFBIG_CFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS
+    { "POSIX_V6_ILP32_OFFBIG_LDFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFFBIG_LIBS
+    { "POSIX_V6_ILP32_OFFBIG_LIBS", _CS_POSIX_V6_ILP32_OFFBIG_LIBS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS
+    { "POSIX_V6_ILP32_OFFBIG_LINTFLAGS", _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS, CONFSTR },
+#endif
+
+#ifdef _SC_V6_LP64_OFF64
+    { "_POSIX_V6_LP64_OFF64", _SC_V6_LP64_OFF64, SYSCONF },
+#endif
+#ifdef _CS_POSIX_V6_LP64_OFF64_CFLAGS
+    { "POSIX_V6_LP64_OFF64_CFLAGS", _CS_POSIX_V6_LP64_OFF64_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LP64_OFF64_LDFLAGS
+    { "POSIX_V6_LP64_OFF64_LDFLAGS", _CS_POSIX_V6_LP64_OFF64_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LP64_OFF64_LIBS
+    { "POSIX_V6_LP64_OFF64_LIBS", _CS_POSIX_V6_LP64_OFF64_LIBS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LP64_OFF64_LINTFLAGS
+    { "POSIX_V6_LP64_OFF64_LINTFLAGS", _CS_POSIX_V6_LP64_OFF64_LINTFLAGS, CONFSTR },
+#endif
+
+#ifdef _SC_V6_LPBIG_OFFBIG
+    { "_POSIX_V6_LPBIG_OFFBIG", _SC_V6_LPBIG_OFFBIG, SYSCONF },
+#endif
+#ifdef _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS
+    { "POSIX_V6_LPBIG_OFFBIG_CFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS
+    { "POSIX_V6_LPBIG_OFFBIG_LDFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LPBIG_OFFBIG_LIBS
+    { "POSIX_V6_LPBIG_OFFBIG_LIBS", _CS_POSIX_V6_LPBIG_OFFBIG_LIBS, CONFSTR },
+#endif
+#ifdef _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS
+    { "POSIX_V6_LPBIG_OFFBIG_LINTFLAGS", _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS, CONFSTR },
+#endif
+
+#ifdef _SC_ADVISORY_INFO
+    { "_POSIX_ADVISORY_INFO", _SC_ADVISORY_INFO, SYSCONF },
+#endif
+#ifdef _SC_BARRIERS
+    { "_POSIX_BARRIERS", _SC_BARRIERS, SYSCONF },
+#endif
+#ifdef _SC_BASE
+    { "_POSIX_BASE", _SC_BASE, SYSCONF },
+#endif
+#ifdef _SC_C_LANG_SUPPORT
+    { "_POSIX_C_LANG_SUPPORT", _SC_C_LANG_SUPPORT, SYSCONF },
+#endif
+#ifdef _SC_C_LANG_SUPPORT_R
+    { "_POSIX_C_LANG_SUPPORT_R", _SC_C_LANG_SUPPORT_R, SYSCONF },
+#endif
+#ifdef _SC_CLOCK_SELECTION
+    { "_POSIX_CLOCK_SELECTION", _SC_CLOCK_SELECTION, SYSCONF },
+#endif
+#ifdef _SC_CPUTIME
+    { "_POSIX_CPUTIME", _SC_CPUTIME, SYSCONF },
+#endif
+#ifdef _SC_THREAD_CPUTIME
+    { "_POSIX_THREAD_CPUTIME", _SC_THREAD_CPUTIME, SYSCONF },
+#endif
+#ifdef _SC_DEVICE_SPECIFIC
+    { "_POSIX_DEVICE_SPECIFIC", _SC_DEVICE_SPECIFIC, SYSCONF },
+#endif
+#ifdef _SC_DEVICE_SPECIFIC_R
+    { "_POSIX_DEVICE_SPECIFIC_R", _SC_DEVICE_SPECIFIC_R, SYSCONF },
+#endif
+#ifdef _SC_FD_MGMT
+    { "_POSIX_FD_MGMT", _SC_FD_MGMT, SYSCONF },
+#endif
+#ifdef _SC_FIFO
+    { "_POSIX_FIFO", _SC_FIFO, SYSCONF },
+#endif
+#ifdef _SC_PIPE
+    { "_POSIX_PIPE", _SC_PIPE, SYSCONF },
+#endif
+#ifdef _SC_FILE_ATTRIBUTES
+    { "_POSIX_FILE_ATTRIBUTES", _SC_FILE_ATTRIBUTES, SYSCONF },
+#endif
+#ifdef _SC_FILE_LOCKING
+    { "_POSIX_FILE_LOCKING", _SC_FILE_LOCKING, SYSCONF },
+#endif
+#ifdef _SC_FILE_SYSTEM
+    { "_POSIX_FILE_SYSTEM", _SC_FILE_SYSTEM, SYSCONF },
+#endif
+#ifdef _SC_MONOTONIC_CLOCK
+    { "_POSIX_MONOTONIC_CLOCK", _SC_MONOTONIC_CLOCK, SYSCONF },
+#endif
+#ifdef _SC_MULTI_PROCESS
+    { "_POSIX_MULTI_PROCESS", _SC_MULTI_PROCESS, SYSCONF },
+#endif
+#ifdef _SC_SINGLE_PROCESS
+    { "_POSIX_SINGLE_PROCESS", _SC_SINGLE_PROCESS, SYSCONF },
+#endif
+#ifdef _SC_NETWORKING
+    { "_POSIX_NETWORKING", _SC_NETWORKING, SYSCONF },
+#endif
+#ifdef _SC_READER_WRITER_LOCKS
+    { "_POSIX_READER_WRITER_LOCKS", _SC_READER_WRITER_LOCKS, SYSCONF },
+#endif
+#ifdef _SC_SPIN_LOCKS
+    { "_POSIX_SPIN_LOCKS", _SC_SPIN_LOCKS, SYSCONF },
+#endif
+#ifdef _SC_REGEXP
+    { "_POSIX_REGEXP", _SC_REGEXP, SYSCONF },
+#endif
+#ifdef _SC_REGEX_VERSION
+    { "_REGEX_VERSION", _SC_REGEX_VERSION, SYSCONF },
+#endif
+#ifdef _SC_SHELL
+    { "_POSIX_SHELL", _SC_SHELL, SYSCONF },
+#endif
+#ifdef _SC_SIGNALS
+    { "_POSIX_SIGNALS", _SC_SIGNALS, SYSCONF },
+#endif
+#ifdef _SC_SPAWN
+    { "_POSIX_SPAWN", _SC_SPAWN, SYSCONF },
+#endif
+#ifdef _SC_SPORADIC_SERVER
+    { "_POSIX_SPORADIC_SERVER", _SC_SPORADIC_SERVER, SYSCONF },
+#endif
+#ifdef _SC_THREAD_SPORADIC_SERVER
+    { "_POSIX_THREAD_SPORADIC_SERVER", _SC_THREAD_SPORADIC_SERVER, SYSCONF },
+#endif
+#ifdef _SC_SYSTEM_DATABASE
+    { "_POSIX_SYSTEM_DATABASE", _SC_SYSTEM_DATABASE, SYSCONF },
+#endif
+#ifdef _SC_SYSTEM_DATABASE_R
+    { "_POSIX_SYSTEM_DATABASE_R", _SC_SYSTEM_DATABASE_R, SYSCONF },
+#endif
+#ifdef _SC_TIMEOUTS
+    { "_POSIX_TIMEOUTS", _SC_TIMEOUTS, SYSCONF },
+#endif
+#ifdef _SC_TYPED_MEMORY_OBJECTS
+    { "_POSIX_TYPED_MEMORY_OBJECTS", _SC_TYPED_MEMORY_OBJECTS, SYSCONF },
+#endif
+#ifdef _SC_USER_GROUPS
+    { "_POSIX_USER_GROUPS", _SC_USER_GROUPS, SYSCONF },
+#endif
+#ifdef _SC_USER_GROUPS_R
+    { "_POSIX_USER_GROUPS_R", _SC_USER_GROUPS_R, SYSCONF },
+#endif
+#ifdef _SC_2_PBS
+    { "POSIX2_PBS", _SC_2_PBS, SYSCONF },
+#endif
+#ifdef _SC_2_PBS_ACCOUNTING
+    { "POSIX2_PBS_ACCOUNTING", _SC_2_PBS_ACCOUNTING, SYSCONF },
+#endif
+#ifdef _SC_2_PBS_LOCATE
+    { "POSIX2_PBS_LOCATE", _SC_2_PBS_LOCATE, SYSCONF },
+#endif
+#ifdef _SC_2_PBS_TRACK
+    { "POSIX2_PBS_TRACK", _SC_2_PBS_TRACK, SYSCONF },
+#endif
+#ifdef _SC_2_PBS_MESSAGE
+    { "POSIX2_PBS_MESSAGE", _SC_2_PBS_MESSAGE, SYSCONF },
+#endif
+#ifdef _SC_SYMLOOP_MAX
+    { "SYMLOOP_MAX", _SC_SYMLOOP_MAX, SYSCONF },
+#endif
+#ifdef _SC_STREAM_MAX
+    { "STREAM_MAX", _SC_STREAM_MAX, SYSCONF },
+#endif
+#ifdef _SC_AIO_LISTIO_MAX
+    { "AIO_LISTIO_MAX", _SC_AIO_LISTIO_MAX, SYSCONF },
+#endif
+#ifdef _SC_AIO_MAX
+    { "AIO_MAX", _SC_AIO_MAX, SYSCONF },
+#endif
+#ifdef _SC_AIO_PRIO_DELTA_MAX
+    { "AIO_PRIO_DELTA_MAX", _SC_AIO_PRIO_DELTA_MAX, SYSCONF },
+#endif
+#ifdef _SC_DELAYTIMER_MAX
+    { "DELAYTIMER_MAX", _SC_DELAYTIMER_MAX, SYSCONF },
+#endif
+#ifdef _SC_HOST_NAME_MAX
+    { "HOST_NAME_MAX", _SC_HOST_NAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_LOGIN_NAME_MAX
+    { "LOGIN_NAME_MAX", _SC_LOGIN_NAME_MAX, SYSCONF },
+#endif
+#ifdef _SC_MQ_OPEN_MAX
+    { "MQ_OPEN_MAX", _SC_MQ_OPEN_MAX, SYSCONF },
+#endif
+#ifdef _SC_MQ_PRIO_MAX
+    { "MQ_PRIO_MAX", _SC_MQ_PRIO_MAX, SYSCONF },
+#endif
+#ifdef _SC_DEVICE_IO
+    { "_POSIX_DEVICE_IO", _SC_DEVICE_IO, SYSCONF },
+#endif
+#ifdef _SC_TRACE
+    { "_POSIX_TRACE", _SC_TRACE, SYSCONF },
+#endif
+#ifdef _SC_TRACE_EVENT_FILTER
+    { "_POSIX_TRACE_EVENT_FILTER", _SC_TRACE_EVENT_FILTER, SYSCONF },
+#endif
+#ifdef _SC_TRACE_INHERIT
+    { "_POSIX_TRACE_INHERIT", _SC_TRACE_INHERIT, SYSCONF },
+#endif
+#ifdef _SC_TRACE_LOG
+    { "_POSIX_TRACE_LOG", _SC_TRACE_LOG, SYSCONF },
+#endif
+#ifdef _SC_RTSIG_MAX
+    { "RTSIG_MAX", _SC_RTSIG_MAX, SYSCONF },
+#endif
+#ifdef _SC_SEM_NSEMS_MAX
+    { "SEM_NSEMS_MAX", _SC_SEM_NSEMS_MAX, SYSCONF },
+#endif
+#ifdef _SC_SEM_VALUE_MAX
+    { "SEM_VALUE_MAX", _SC_SEM_VALUE_MAX, SYSCONF },
+#endif
+#ifdef _SC_SIGQUEUE_MAX
+    { "SIGQUEUE_MAX", _SC_SIGQUEUE_MAX, SYSCONF },
+#endif
+#ifdef _PC_FILESIZEBITS
+    { "FILESIZEBITS", _PC_FILESIZEBITS, PATHCONF },
+#endif
+#ifdef _PC_ALLOC_SIZE_MIN
+    { "POSIX_ALLOC_SIZE_MIN", _PC_ALLOC_SIZE_MIN, PATHCONF },
+#endif
+#ifdef _PC_REC_INCR_XFER_SIZE
+    { "POSIX_REC_INCR_XFER_SIZE", _PC_REC_INCR_XFER_SIZE, PATHCONF },
+#endif
+#ifdef _PC_REC_MAX_XFER_SIZE
+    { "POSIX_REC_MAX_XFER_SIZE", _PC_REC_MAX_XFER_SIZE, PATHCONF },
+#endif
+#ifdef _PC_REC_MIN_XFER_SIZE
+    { "POSIX_REC_MIN_XFER_SIZE", _PC_REC_MIN_XFER_SIZE, PATHCONF },
+#endif
+#ifdef _PC_REC_XFER_ALIGN
+    { "POSIX_REC_XFER_ALIGN", _PC_REC_XFER_ALIGN, PATHCONF },
+#endif
+#ifdef _PC_SYMLINK_MAX
+    { "SYMLINK_MAX", _PC_SYMLINK_MAX, PATHCONF },
+#endif
+#ifdef _CS_GNU_LIBC_VERSION
+    { "GNU_LIBC_VERSION", _CS_GNU_LIBC_VERSION, CONFSTR },
+#endif
+#ifdef _CS_GNU_LIBPTHREAD_VERSION
+    { "GNU_LIBPTHREAD_VERSION", _CS_GNU_LIBPTHREAD_VERSION, CONFSTR },
+#endif
+#ifdef _PC_2_SYMLINKS
+    { "POSIX2_SYMLINKS", _PC_2_SYMLINKS, PATHCONF },
+#endif
+
+#ifdef _SC_LEVEL1_ICACHE_SIZE
+    { "LEVEL1_ICACHE_SIZE", _SC_LEVEL1_ICACHE_SIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL1_ICACHE_ASSOC
+    { "LEVEL1_ICACHE_ASSOC", _SC_LEVEL1_ICACHE_ASSOC, SYSCONF },
+#endif
+#ifdef _SC_LEVEL1_ICACHE_LINESIZE
+    { "LEVEL1_ICACHE_LINESIZE", _SC_LEVEL1_ICACHE_LINESIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL1_DCACHE_SIZE
+    { "LEVEL1_DCACHE_SIZE", _SC_LEVEL1_DCACHE_SIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL1_DCACHE_ASSOC
+    { "LEVEL1_DCACHE_ASSOC", _SC_LEVEL1_DCACHE_ASSOC, SYSCONF },
+#endif
+#ifdef _SC_LEVEL1_DCACHE_LINESIZE
+    { "LEVEL1_DCACHE_LINESIZE", _SC_LEVEL1_DCACHE_LINESIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL2_CACHE_SIZE
+    { "LEVEL2_CACHE_SIZE", _SC_LEVEL2_CACHE_SIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL2_CACHE_ASSOC
+    { "LEVEL2_CACHE_ASSOC", _SC_LEVEL2_CACHE_ASSOC, SYSCONF },
+#endif
+#ifdef _SC_LEVEL2_CACHE_LINESIZE
+    { "LEVEL2_CACHE_LINESIZE", _SC_LEVEL2_CACHE_LINESIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL3_CACHE_SIZE
+    { "LEVEL3_CACHE_SIZE", _SC_LEVEL3_CACHE_SIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL3_CACHE_ASSOC
+    { "LEVEL3_CACHE_ASSOC", _SC_LEVEL3_CACHE_ASSOC, SYSCONF },
+#endif
+#ifdef _SC_LEVEL3_CACHE_LINESIZE
+    { "LEVEL3_CACHE_LINESIZE", _SC_LEVEL3_CACHE_LINESIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL4_CACHE_SIZE
+    { "LEVEL4_CACHE_SIZE", _SC_LEVEL4_CACHE_SIZE, SYSCONF },
+#endif
+#ifdef _SC_LEVEL4_CACHE_ASSOC
+    { "LEVEL4_CACHE_ASSOC", _SC_LEVEL4_CACHE_ASSOC, SYSCONF },
+#endif
+
+#ifdef _SC_IPV6
+    { "IPV6", _SC_IPV6, SYSCONF },
+#endif
+#ifdef _SC_RAW_SOCKETS
+    { "RAW_SOCKETS", _SC_RAW_SOCKETS, SYSCONF },
+#endif
 
     { NULL, 0, SYSCONF }
   };
 
+
+static struct { const char *name; int num; } specs[] =
+  {
+    { "POSIX_V6_ILP32_OFF32", _SC_V6_ILP32_OFF32 },
+    { "POSIX_V6_ILP32_OFFBIG", _SC_V6_ILP32_OFFBIG },
+    { "POSIX_V6_LP64_OFF64", _SC_V6_LP64_OFF64 },
+    { "POSIX_V6_LPBIG_OFFBIG", _SC_V6_LPBIG_OFFBIG }
+  };
+static const int nspecs = sizeof (specs) / sizeof (specs[0]);
+
 extern const char *__progname;
 
 
 static void
 usage (void)
 {
-  fprintf (stderr, _("Usage: %s variable_name [pathname]\n"), __progname);
+  fprintf (stderr,
+          _("Usage: %s [-v specification] variable_name [pathname]\n"),
+          __progname);
+  fprintf (stderr,
+          _("       %s -a [pathname]\n"), __progname);
   exit (2);
 }
 
+static void
+print_all (const char *path)
+{
+  register const struct conf *c;
+  size_t clen;
+  long int value;
+  char *cvalue;
+  for (c = vars; c->name != NULL; ++c) {
+    printf("%-35s", c->name);
+    switch (c->call) {
+      case PATHCONF:
+        value = pathconf (path, c->call_name);
+        if (value != -1) {
+          printf("%ld", value);
+        }
+        printf("\n");
+        break;
+      case SYSCONF:
+        value = sysconf (c->call_name);
+        if (value == -1l) {
+          if (c->call_name == _SC_UINT_MAX
+            || c->call_name == _SC_ULONG_MAX)
+            printf ("%lu", value);
+        }
+        else {
+          printf ("%ld", value);
+        }
+        printf ("\n");
+        break;
+      case CONFSTR:
+        clen = confstr (c->call_name, (char *) NULL, 0);
+        cvalue = (char *) malloc (clen);
+        if (cvalue == NULL)
+          error (3, 0, _("memory exhausted"));
+        if (confstr (c->call_name, cvalue, clen) != clen)
+          error (3, errno, "confstr");
+        printf ("%.*s\n", (int) clen, cvalue);
+        break;
+    }
+  }
+  exit (0);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -263,16 +1007,109 @@ main (int argc, char *argv[])
 Copyright (C) %s Free Software Foundation, Inc.\n\
 This is free software; see the source for copying conditions.  There is NO\n\
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
-"), "1991, 1992, 1995, 1996, 1997");
+"), "2006");
       fprintf (stderr, gettext ("Written by %s.\n"), "Roland McGrath");
       return 0;
     }
 
+  const char *getconf_dir = getenv ("GETCONF_DIR") ?: GETCONF_DIR;
+  size_t getconf_dirlen = strlen (getconf_dir);
+
+  const char *spec = NULL;
+  char buf[sizeof "POSIX_V6_LPBIG_OFFBIG"];
+  char *argv0 = argv[0];
+  if (argc > 1 && strncmp (argv[1], "-v", 2) == 0)
+    {
+      if (argv[1][2] == '\0')
+       {
+         if (argc < 3)
+           usage ();
+
+         spec = argv[2];
+         argv += 2;
+         argc -= 2;
+       }
+      else
+       {
+         spec = &argv[1][2];
+         argv += 1;
+         argc += 1;
+       }
+    }
+  else
+    {
+      char default_name[getconf_dirlen + sizeof "/default"];
+      memcpy (mempcpy (default_name, getconf_dir, getconf_dirlen),
+             "/default", sizeof "/default");
+      int len = readlink (default_name, buf, sizeof buf - 1);
+      if (len > 0)
+       {
+         buf[len] = '\0';
+         spec = buf;
+       }
+    }
+
+  /* Check for the specifications we know.  */
+  if (spec != NULL)
+    {
+      int i;
+      for (i = 0; i < nspecs; ++i)
+       if (strcmp (spec, specs[i].name) == 0)
+         break;
+
+      if (i == nspecs)
+       error (2, 0, _("unknown specification \"%s\""), spec);
+
+      switch (specs[i].num)
+       {
+#ifndef _POSIX_V6_ILP32_OFF32
+         case _SC_V6_ILP32_OFF32:
+#endif
+#ifndef _POSIX_V6_ILP32_OFFBIG
+         case _SC_V6_ILP32_OFFBIG:
+#endif
+#ifndef _POSIX_V6_LP64_OFF64
+         case _SC_V6_LP64_OFF64:
+#endif
+#ifndef _POSIX_V6_LPBIG_OFFBIG
+         case _SC_V6_LPBIG_OFFBIG:
+#endif
+           {
+             const char *args[argc + 3];
+             size_t spec_len = strlen (spec);
+             char getconf_name[getconf_dirlen + 1 + spec_len + 1];
+             memcpy (mempcpy (mempcpy (getconf_name, getconf_dir,
+                                       getconf_dirlen),
+                              "/", 1), spec, spec_len + 1);
+             args[0] = argv0;
+             args[1] = "-v";
+             args[2] = spec;
+             memcpy (&args[3], &argv[1], argc * sizeof (argv[1]));
+             execv (getconf_name, (char * const *) args);
+             error (4, errno, _("Couldn't execute %s"), getconf_name);
+           }
+         default:
+           break;
+       }
+    }
+
+  if (argc > 1 && strcmp (argv[1], "-a") == 0)
+    {
+      if (argc == 2)
+       print_all ("/");
+      else if (argc == 3)
+       print_all (argv[2]);
+      else
+       usage ();
+    }
+
   if (argc < 2 || argc > 3)
     usage ();
 
   for (c = vars; c->name != NULL; ++c)
-    if (!strcmp (c->name, argv[1]))
+    if (strcmp (c->name, argv[1]) == 0
+       || (strncmp (c->name, "_POSIX_", 7) == 0
+           && strcmp (c->name + 7, argv[1]) == 0))
       {
        long int value;
        size_t clen;
@@ -300,11 +1137,13 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
              usage ();
            value = sysconf (c->call_name);
            if (value == -1l)
-             if (c->call_name == _SC_UINT_MAX
-                 || c->call_name == _SC_ULONG_MAX)
-               printf ("%lu\n", value);
-             else
-               puts (_("undefined"));
+             {
+               if (c->call_name == _SC_UINT_MAX
+                   || c->call_name == _SC_ULONG_MAX)
+                 printf ("%lu\n", value);
+               else
+                 puts (_("undefined"));
+             }
            else
              printf ("%ld\n", value);
            exit (0);