uclibc-ng/extra/scripts/gen_bits_syscall_h.sh

#!/bin/sh
#
# Copyright (C) 2001 Manuel Novoa III <mjn3@uclibc.org>
# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
#
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#

# June 27, 2001         Manuel Novoa III
#
# This script expects top_builddir and CC (as used in the Makefiles) to be set
# in the environment, and outputs the appropriate
# $top_builddir/include/bits/sysnum.h # corresponding to
# $top_builddir/include/asm/unistd.h to stdout.
#
# Warning!!! This does _no_ error checking!!!

if [ "${KERNEL_HEADERS:-/}" != "/" ] ; then
  INCLUDE_OPTS="-nostdinc -I${KERNEL_HEADERS}"
else
  # Let the toolchain use its configure paths.
  INCLUDE_OPTS=
fi

case $CC in
*icc*) CC_SYSNUM_ARGS="-dM" ;;
*)     CC_SYSNUM_ARGS="-dN" ;;
esac

( echo "#include <asm/unistd.h>";
  echo "#include <asm/unistd.h>" |
  $CC -E $CC_SYSNUM_ARGS $INCLUDE_OPTS - |
  sed -ne 's/^[ ]*#define[ ]*\(__ARM_NR_\|__NR_\)\([A-Za-z0-9_]*\).*/UCLIBC\1\2 \1\2/gp' \
      -e 's/^[ ]*#undef[ ]*\(__ARM_NR_\|__NR_\)\([A-Za-z0-9_]*\).*/UNDEFUCLIBC\1\2 \1\2/gp' # needed to strip out any kernel-internal defines
) |
$CC -E $INCLUDE_OPTS - |
( echo "/* WARNING!!! AUTO-GENERATED FILE!!! DO NOT EDIT!!! */" ;
  echo ;
  echo "#ifndef _BITS_SYSNUM_H" ;
  echo "#define _BITS_SYSNUM_H" ;
  echo ;
  echo "#ifndef _SYSCALL_H" ;
  echo "# error \"Never use <bits/sysnum.h> directly; include <sys/syscall.h> instead.\"" ;
  echo "#endif" ; echo ;
  sed -ne 's/^UCLIBC\(__ARM_NR_\|__NR_\)\([A-Za-z0-9_]*\) *\(.*\)/#undef \1\2\
#define \1\2 \3\
#define SYS_\2 \1\2/gp' \
     -e 's/^UNDEFUCLIBC\(__ARM_NR_\|__NR_\)\([A-Za-z0-9_]*\).*/#undef \1\2/gp'
  echo ;
  echo "#endif" ;
)