-# absolute-header.m4 serial 3
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# 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.
# ---------------------------------------
# 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
+# 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>').
+# (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], [$1],
dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
AS_VAR_SET(gl_absolute_header,
[`(eval "$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#;p;q;}'`])
+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 the absolute name of <]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