106 lines
4 KiB
Makefile
106 lines
4 KiB
Makefile
# $NetBSD: find-headers.mk,v 1.2 2013/11/23 12:35:39 obache Exp $
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#
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# Copyright (c) 2005 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Johnny C. Lam.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the NetBSD
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# Foundation, Inc. and its contributors.
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# 4. Neither the name of The NetBSD Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# This is a "subroutine" that can be included to detect the presence of
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# header files in the base system.
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#
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# The following variables must be defined before including this file:
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#
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# BUILTIN_FIND_HEADERS_VAR is a list of variables to define. These
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# variables take the value of the path to the file that is
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# "found".
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#
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# BUILTIN_FIND_HEADERS.<var> is the list of header files to find, in
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# order, on the ${BUILTIN_INCLUDE_DIRS}. The variable <var> is set
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# to the first path "found" on the filesystem.
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#
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# Optionally, the following variables may also be defined:
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#
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# BUILTIN_FIND_GREP.<var> is a regular expression that must be
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# matched within a file in order for the file to be considered
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# "found". If it isn't defined, then we simply check for the
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# existence of the file.
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#
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# After including this file, the following variables are defined:
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#
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# <var> is the first of the header file listed in
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# ${BUILTIN_FIND_HEADERS.<var>} that is "found" in
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# ${BUILTIN_INCLUDE_DIRS}, or else it is "__nonexistent__".
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#
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# An example use is:
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#
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# BUILTIN_FIND_HEADERS_VAR:= FOO BAR
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#
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# BUILTIN_FIND_HEADERS.FOO= header1.h header2.h
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# BUILTIN_FIND_GREP.FOO= \#define.*FOO
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#
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# BUILTIN_FIND_HEADERS.BAR= header3.h heaer/4.h
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# .include "../../mk/buildlink3/builtin-files.mk"
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#
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.if empty(USE_TOOLS:Mecho)
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USE_TOOLS+= echo
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.endif
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.if empty(USE_TOOLS:Mgrep)
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USE_TOOLS+= grep
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.endif
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BUILTIN_INCLUDE_DIRS?= ${COMPILER_INCLUDE_DIRS} ${"${X11_TYPE:Mnative}":?${X11BASE}/include:}
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.for _var_ in ${BUILTIN_FIND_HEADERS_VAR}
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. if !defined(${_var_})
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${_var_}= __nonexistent__
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. for _file_ in ${BUILTIN_FIND_HEADERS.${_var_}}
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. for _dir_ in ${BUILTIN_INCLUDE_DIRS}
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. if !empty(${_var_}:M__nonexistent__) && exists(${_dir_}/${_file_})
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. if !defined(BUILTIN_FIND_GREP.${_var_})
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${_var_}= ${_dir_}/${_file_}
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. else
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${_var_}!= \
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if ${GREP} -q ${BUILTIN_FIND_GREP.${_var_}:Q} ${_dir_:Q}/${_file_:Q}; then \
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${ECHO} ${_dir_:Q}/${_file_:Q}; \
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else \
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${ECHO} __nonexistent__; \
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fi
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. endif
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. endif
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. endfor
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. endfor
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. endif
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MAKEVARS+= ${_var_}
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.endfor
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