dnl $Id$ dnl Copyright (C) 2004 Enrico Scholz dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; version 2 of the License. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the dnl GNU General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. dnl Usage: ENSC_SYSCALLNR(,) AC_DEFUN([ENSC_SYSCALLNR], [ AC_REQUIRE([ENSC_KERNEL_HEADERS]) AC_REQUIRE([AC_PROG_EGREP]) AC_CACHE_CHECK([for number of syscall '$1'], [ensc_cv_value_syscall_$1], [ AC_LANG_PUSH(C) AC_EGREP_CPP(ensc_cv_value_syscall_$1=auto, [ #include #ifdef __NR_$1 ensc_cv_value_syscall_$1=auto #endif ], [ensc_cv_value_syscall_$1=auto], [ AC_LANG_CONFTEST([ #include #ifdef __NR_$1 ensc_cv_value_syscall_$1=__NR_$1 #else ensc_cv_value_syscall_$1=$2 #endif ]) eval $($CPP $CPPFLAGS -I$ensc_cv_path_kernelheaders conftest.c | $EGREP -x 'ensc_cv_value_syscall_$1=[[1-9]][[0-9]]*') if test x"$ensc_cv_value_syscall_$1" = x; then AC_MSG_ERROR( [Can not determine value of __NR_$1; please verify your glibc/kernelheaders, and/or set CPPFLAGS='-D=__NR_$1=' environment when calling configure.]) fi ]) AC_LANG_POP ]) if test x"$ensc_cv_value_syscall_$1" != xauto; then AC_DEFINE_UNQUOTED(ENSC_SYSCALL__NR_$1, $ensc_cv_value_syscall_$1, [The number of the $1 syscall]) fi ])