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authorThomas White <taw@physics.org>2014-08-19 10:54:38 +0200
committerThomas White <taw@physics.org>2014-08-19 10:54:38 +0200
commit1a532028cb2f2df6f12e518bdf6d3425bbb28b08 (patch)
treeebccb1fd7bc4d3d561cc5d7456dc5629cf497653 /m4/include_next.m4
parent8e770f218c07cd71c3ba7262348c76ced477ba5b (diff)
Update gnulib files
Diffstat (limited to 'm4/include_next.m4')
-rw-r--r--m4/include_next.m455
1 files changed, 4 insertions, 51 deletions
diff --git a/m4/include_next.m4 b/m4/include_next.m4
index a60a2614..69ad3dbb 100644
--- a/m4/include_next.m4
+++ b/m4/include_next.m4
@@ -1,5 +1,5 @@
# include_next.m4 serial 23
-dnl Copyright (C) 2006-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2014 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.
@@ -192,56 +192,9 @@ dnl until we can assume autoconf 2.64 or newer.
if test AS_VAR_GET(gl_header_exists) = yes; then
AS_VAR_POPDEF([gl_header_exists])
])
- AC_LANG_CONFTEST(
- [AC_LANG_SOURCE(
- [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
- )])
- dnl AIX "xlc -E" and "cc -E" omit #line directives for header
- dnl files that contain only a #include of other header files and
- dnl no non-comment tokens of their own. This leads to a failure
- dnl to detect the absolute name of <dirent.h>, <signal.h>,
- dnl <poll.h> and others. The workaround is to force preservation
- dnl of comments through option -C. This ensures all necessary
- dnl #line directives are present. GCC supports option -C as well.
- case "$host_os" in
- aix*) gl_absname_cpp="$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
- dnl A sed expression that turns a string into a basic regular
- dnl expression, for use within "/.../".
- gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
-changequote([,])
- gl_header_literal_regex=`echo ']m4_defn([gl_HEADER_NAME])[' \
- | sed -e "$gl_make_literal_regex_sed"`
- gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
- s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
-changequote(,)dnl
- s|^/[^/]|//&|
-changequote([,])dnl
- 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_next_header,
- ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
- sed -n "$gl_absolute_header_sed"`'"'])
+ gl_ABSOLUTE_HEADER_ONE(gl_HEADER_NAME)
+ AS_VAR_COPY([gl_header], [gl_cv_absolute_]AS_TR_SH(gl_HEADER_NAME))
+ AS_VAR_SET(gl_next_header, ['"'$gl_header'"'])
m4_if([$2], [check],
[else
AS_VAR_SET(gl_next_header, ['<'gl_HEADER_NAME'>'])