Mercurial > hg > octave-nkf > gnulib-hg
changeset 8382:63f80832687d
Make <sys/select.h> self-contained, i.e. make it possible to include it
without prior <sys/types.h>.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Thu, 08 Mar 2007 03:48:30 +0000 |
| parents | 8c96722f8bd0 |
| children | 314709e521da |
| files | m4/sys_select_h.m4 |
| diffstat | 1 files changed, 21 insertions(+), 7 deletions(-) [+] |
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--- a/m4/sys_select_h.m4 +++ b/m4/sys_select_h.m4 @@ -1,18 +1,32 @@ -# sys_select_h.m4 serial 1 -dnl Copyright (C) 2006 Free Software Foundation, Inc. +# sys_select_h.m4 serial 2 +dnl Copyright (C) 2006-2007 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. -dnl Adapted from arpa_inet.m4, written by Simon Josefsson. - AC_DEFUN([gl_HEADER_SYS_SELECT], [ - AC_CHECK_HEADERS_ONCE([sys/select.h]) - if test $ac_cv_header_sys_select_h = yes; then + AC_CACHE_CHECK([whether <sys/select.h> is self-contained], + [gl_cv_header_sys_select_h_selfcontained], + [ + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/select.h>], [])], + [gl_cv_header_sys_select_h_selfcontained=yes], + [gl_cv_header_sys_select_h_selfcontained=no]) + ]) + if test $gl_cv_header_sys_select_h_selfcontained = yes; then SYS_SELECT_H='' else SYS_SELECT_H='sys/select.h' + AC_CHECK_HEADERS([sys/select.h]) + gl_ABSOLUTE_HEADER([sys/select.h]) + ABSOLUTE_SYS_SELECT_H=\"$gl_cv_absolute_sys_select_h\" + AC_SUBST([ABSOLUTE_SYS_SELECT_H]) + if test $ac_cv_header_sys_select_h = yes; then + HAVE_SYS_SELECT_H=1 + else + HAVE_SYS_SELECT_H=0 + fi + AC_SUBST([HAVE_SYS_SELECT_H]) fi - AC_SUBST(SYS_SELECT_H) + AC_SUBST([SYS_SELECT_H]) ])