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-rw-r--r--gnulib-m4/absolute-header.m4102
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diff --git a/gnulib-m4/absolute-header.m4 b/gnulib-m4/absolute-header.m4
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--- a/gnulib-m4/absolute-header.m4
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@@ -1,102 +0,0 @@
-# absolute-header.m4 serial 16
-dnl Copyright (C) 2006-2015 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 From Derek Price.
-
-# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
-# ---------------------------------------
-# Find the absolute name of a header file, testing first if the header exists.
-# If the header were sys/inttypes.h, this macro would define
-# ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h
-# in config.h
-# (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
-# The three "///" are to pacify Sun C 5.8, which otherwise would say
-# "warning: #include of /usr/include/... may be non-portable".
-# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
-# Note: This macro assumes that the header file is not empty after
-# preprocessing, i.e. it does not only define preprocessor macros but also
-# provides some type/enum definitions or function/variable declarations.
-AC_DEFUN([gl_ABSOLUTE_HEADER],
-[AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_PREPROC_REQUIRE()dnl
-dnl FIXME: gl_absolute_header and ac_header_exists must be used unquoted
-dnl until we can assume autoconf 2.64 or newer.
-m4_foreach_w([gl_HEADER_NAME], [$1],
- [AS_VAR_PUSHDEF([gl_absolute_header],
- [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl
- AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>],
- m4_defn([gl_absolute_header]),
- [AS_VAR_PUSHDEF([ac_header_exists],
- [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl
- AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl
- if test AS_VAR_GET(ac_header_exists) = yes; then
- gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME]))
- fi
- AS_VAR_POPDEF([ac_header_exists])dnl
- ])dnl
- AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])),
- ["AS_VAR_GET(gl_absolute_header)"],
- [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.])
- AS_VAR_POPDEF([gl_absolute_header])dnl
-])dnl
-])# gl_ABSOLUTE_HEADER
-
-# gl_ABSOLUTE_HEADER_ONE(HEADER)
-# ------------------------------
-# Like gl_ABSOLUTE_HEADER, except that:
-# - it assumes that the header exists,
-# - it uses the current CPPFLAGS,
-# - it does not cache the result,
-# - it is silent.
-AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
-[
- AC_REQUIRE([AC_CANONICAL_HOST])
- AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
- dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
- dnl that contain only a #include of other header files and no
- dnl non-comment tokens of their own. This leads to a failure to
- dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
- dnl and others. The workaround is to force preservation of comments
- dnl through option -C. This ensures all necessary #line directives
- dnl are present. GCC supports option -C as well.
- case "$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'
- gl_header_literal_regex=`echo '$1' \
- | sed -e "$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/
- s|^/[^/]|//&|
- p
- q
- }'
-changequote([,])
- 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.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
- sed -n "$gl_absolute_header_sed"`])
-])