Imported Upstream version 1.4.12
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291 changed files with 27277 additions and 11364 deletions
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# absolute-header.m4 serial 6
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dnl Copyright (C) 2006 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Derek Price.
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# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
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# ---------------------------------------
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# Find the absolute name of a header file, assuming the header exists.
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# If the header were sys/inttypes.h, this macro would define
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# ABSOLUTE_SYS_INTTYPES_H to the `""' quoted absolute name of sys/inttypes.h
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# in config.h
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# (e.g. `#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
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# The three "///" are to pacify Sun C 5.8, which otherwise would say
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# "warning: #include of /usr/include/... may be non-portable".
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# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
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AC_DEFUN([gl_ABSOLUTE_HEADER],
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[AC_LANG_PREPROC_REQUIRE()dnl
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AC_FOREACH([gl_HEADER_NAME], [$1],
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[AS_VAR_PUSHDEF([gl_absolute_header],
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[gl_cv_absolute_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
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AC_CACHE_CHECK([absolute name of <]m4_quote(m4_defn([gl_HEADER_NAME]))[>],
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m4_quote(m4_defn([gl_absolute_header])),
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[AS_VAR_PUSHDEF([ac_header_exists],
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[ac_cv_header_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
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AC_CHECK_HEADERS_ONCE(m4_quote(m4_defn([gl_HEADER_NAME])))dnl
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if test AS_VAR_GET(ac_header_exists) = yes; then
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AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]])])
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dnl eval is necessary to expand ac_cpp.
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dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
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AS_VAR_SET(gl_absolute_header,
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[`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
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sed -n '\#/]m4_quote(m4_defn([gl_HEADER_NAME]))[#{s#.*"\(.*/]m4_quote(m4_defn([gl_HEADER_NAME]))[\)".*#\1#;s#^/[^/]#//&#;p;q;}'`])
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fi
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AS_VAR_POPDEF([ac_header_exists])dnl
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])dnl
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AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_quote(m4_defn([gl_HEADER_NAME]))),
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["AS_VAR_GET(gl_absolute_header)"],
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[Define this to an absolute name of <]m4_quote(m4_defn([gl_HEADER_NAME]))[>.])
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AS_VAR_POPDEF([gl_absolute_header])dnl
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])dnl
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])# gl_ABSOLUTE_HEADER
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