-# absolute-header.m4 serial 13
+# absolute-header.m4 serial 14
dnl Copyright (C) 2006-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
# - it is silent.
AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
[
+ AC_REQUIRE([AC_CANONICAL_HOST])
AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
dnl that contain only a #include of other header files and no
aix*) gl_absname_cpp="$ac_cpp -C" ;;
*) gl_absname_cpp="$ac_cpp" ;;
esac
+changequote(,)
+ case "$host_os" in
+ mingw*)
+ dnl For the sake of native Windows compilers (excluding gcc),
+ dnl treat backslash as a directory separator, like /.
+ dnl Actually, these compilers use a double-backslash as
+ dnl directory separator, inside the
+ dnl # line "filename"
+ dnl directives.
+ gl_dirsep_regex='[/\\]'
+ ;;
+ *)
+ gl_dirsep_regex='/'
+ ;;
+ esac
+changequote([,])
+ gl_absolute_header_sed='\#'"${gl_dirsep_regex}"'$1#{
+ s#.*"\(.*'"${gl_dirsep_regex}"'$1\)".*#\1#
+ s#^/[^/]#//&#
+ p
+ q
+ }'
dnl eval is necessary to expand gl_absname_cpp.
dnl Ultrix and Pyramid sh refuse to redirect output of eval,
dnl so use subshell.
AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]),
[`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
-sed -n '\#/$1#{
- s#.*"\(.*/$1\)".*#\1#
- s#^/[^/]#//&#
- p
- q
-}'`])
+ sed -n "$gl_absolute_header_sed"`])
])