mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-12-23 14:15:28 +00:00
50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
# absolute-header.m4 serial 7
|
|
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 From Derek Price.
|
|
|
|
# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
|
|
# ---------------------------------------
|
|
# Find the absolute name of a header file, assuming 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.
|
|
AC_DEFUN([gl_ABSOLUTE_HEADER],
|
|
[AC_LANG_PREPROC_REQUIRE()dnl
|
|
AC_FOREACH([gl_HEADER_NAME], [$1],
|
|
[AS_VAR_PUSHDEF([gl_absolute_header],
|
|
[gl_cv_absolute_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
|
|
AC_CACHE_CHECK([absolute name of <]m4_quote(m4_defn([gl_HEADER_NAME]))[>],
|
|
m4_quote(m4_defn([gl_absolute_header])),
|
|
[AS_VAR_PUSHDEF([ac_header_exists],
|
|
[ac_cv_header_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
|
|
AC_CHECK_HEADERS_ONCE(m4_quote(m4_defn([gl_HEADER_NAME])))dnl
|
|
if test AS_VAR_GET(ac_header_exists) = yes; then
|
|
AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]])])
|
|
dnl eval is necessary to expand ac_cpp.
|
|
dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
|
|
AS_VAR_SET(gl_absolute_header,
|
|
[`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
|
|
sed -n '\#/]m4_quote(m4_defn([gl_HEADER_NAME]))[#{
|
|
s#.*"\(.*/]m4_quote(m4_defn([gl_HEADER_NAME]))[\)".*#\1#
|
|
s#^/[^/]#//&#
|
|
p
|
|
q
|
|
}'`])
|
|
fi
|
|
AS_VAR_POPDEF([ac_header_exists])dnl
|
|
])dnl
|
|
AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_quote(m4_defn([gl_HEADER_NAME]))),
|
|
["AS_VAR_GET(gl_absolute_header)"],
|
|
[Define this to an absolute name of <]m4_quote(m4_defn([gl_HEADER_NAME]))[>.])
|
|
AS_VAR_POPDEF([gl_absolute_header])dnl
|
|
])dnl
|
|
])# gl_ABSOLUTE_HEADER
|