6c25dec844
This is based on the decision The NetBSD Foundation made in 2008 to do so, which was already applied to src. This change has been applied to code which is likely not in other repositories. ok board@, reviewed by riastradh@
168 lines
6.1 KiB
Makefile
168 lines
6.1 KiB
Makefile
# $NetBSD: bsd.builtin.mk,v 1.14 2018/08/22 20:48:36 maya Exp $
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#
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# Copyright (c) 2004-2005 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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#
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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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# Include this file to set the value of USE_BUILTIN.<pkg> for each
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# package listed in BUILDLINK_TREE. Note that this file may
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# indirectly add additional values to BUILDLINK_TREE.
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#
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# For each package which may duplicate built-in software on the system,
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# a builtin.mk file should be created. The only requirements of a
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# builtin.mk file are:
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#
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# (1) It should set USE_BUILTIN.<pkg> to either "yes" or "no" after it
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# is included.
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# (2) It should *not* override any USE_BUILTIN.<pkg> which is already
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# set before the builtin.mk file is included.
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# (3) It should be written to allow multiple inclusion.
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#
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# An example package builtin.mk file is:
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#
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# -------------8<-------------8<-------------8<-------------8<-------------
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# BUILTIN_PKG:= wibble
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# .include "../../mk/buildlink3/bsd.builtin.mk"
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#
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# ###
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# ### Determine if there is a built-in implementation of the package and
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# ### set IS_BUILTIN.<pkg> appropriately ("yes" or "no").
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# ###
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# .if !defined(IS_BUILTIN.wibble)
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# IS_BUILTIN.wibble= no
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# .endif
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# MAKEVARS+= IS_BUILTIN.wibble
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#
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# ###
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# ### If there is a built-in implementation, then set BUILTIN_PKG.<pkg> to
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# ### a package name to represent the built-in package.
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# ###
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# .if !defined(BUILTIN_PKG.wibble) && \
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# !empty(IS_BUILTIN.wibble:M[yY][eE][sS])
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# BUILTIN_PKG.wibble= wibble-1.0
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# .endif
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# MAKEVARS+= BUILTIN_PKG.wibble
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#
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# ###
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# ### Determine whether we should use the built-in implementation if it
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# ### exists, and set USE_BUILTIN.<pkg> appropriate ("yes" or "no").
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# ###
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# .if !defined(USE_BUILTIN.wibble)
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# . if ${PREFER.wibble} == "pkgsrc"
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# USE_BUILTIN.wibble= no
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# . else
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# USE_BUILTIN.wibble= ${IS_BUILTIN.wibble}
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# . if defined(BUILTIN_PKG.wibble) && \
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# !empty(IS_BUILTIN.wibble:M[yY][eE][sS])
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# USE_BUILTIN.wibble= yes
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# . for _dep_ in ${BUILDLINK_API_DEPENDS.wibble}
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# . if !empty(USE_BUILTIN.wibble:M[yY][eE][sS])
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# USE_BUILTIN.wibble!= \
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# if ${PKG_ADMIN} pmatch ${_dep_:Q} ${BUILTIN_PKG.wibble:Q}; then \
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# ${ECHO} "yes"; \
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# else \
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# ${ECHO} "no"; \
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# fi
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# . endif
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# . endfor
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# . endif
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# . endif
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# .endif
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# MAKEVARS+= USE_BUILTIN.wibble
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#
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# ###
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# ### The section below only applies if we are not including this file
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# ### solely to determine whether a built-in implementation exists.
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# ###
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# CHECK_BUILTIN.wibble?= no
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# .if !empty(CHECK_BUILTIN.wibble:M[nN][oO])
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# #
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# # Here we place code that depends on whether USE_BUILTIN.wibble is
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# # set to "yes" or "no".
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# #
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# .endif # CHECK_BUILTIN.wibble
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# -------------8<-------------8<-------------8<-------------8<-------------
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#
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# Note the structure of the builtin.mk file: first we set IS_BUILTIN.<pkg>,
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# then USE_BUILTIN.<pkg>, then we isolate code that depends on the whether
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# USE_BUILTIN.<pkg> is "yes" or "no" in a region that is guarded by
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# CHECK_BUILTIN.<pkg>. Package builtin.mk files aren't protected against
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# multiple inclusion.
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#
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.include "../../mk/bsd.fast.prefs.mk"
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.for _pkg_ in ${BUILTIN_PKG}
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#
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# Define PREFER.<pkg> to be either "pkgsrc" or "native" depending on whether
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# to prefer the pkgsrc or native version of a particular package. Its value
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# is determined by a number of variables described below.
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#
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# PREFER.<pkg>
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# This variable has the highest precedence, and should generally only be
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# used by packages when it is known that a specific version should always
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# be used or avoided.
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#
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# PREFER_PKGSRC
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# PREFER_NATIVE
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# These user-settable variables either take "yes" or a list of package
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# names. The "yes" form has a lower precedence than a specific package,
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# so the most common case is to set one variable to "yes" and then override
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# specific packages in the other variable.
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#
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# If a package is specified in neither or in both variables, then the
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# PREFER_PKGSRC setting takes precedence.
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#
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# _OPSYS_PREFER.<pkg>
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# This variable should only be set in mk/platform files, and provides a
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# per-platform default that takes precedence over "yes" in PREFER_* but is
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# overridden by a more specific package name match.
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#
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_BLTN_PREFER.${_pkg_}= pkgsrc
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. if !empty(PREFER_NATIVE:M[yY][eE][sS])
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_BLTN_PREFER.${_pkg_}= native
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. endif
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. if !empty(PREFER_PKGSRC:M[yY][eE][sS])
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_BLTN_PREFER.${_pkg_}= pkgsrc
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. endif
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. if defined(_OPSYS_PREFER.${_pkg_})
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_BLTN_PREFER.${_pkg_}= ${_OPSYS_PREFER.${_pkg_}}
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. endif
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. if !empty(PREFER_NATIVE:M${_pkg_})
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_BLTN_PREFER.${_pkg_}= native
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. endif
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. if !empty(PREFER_PKGSRC:M${_pkg_})
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_BLTN_PREFER.${_pkg_}= pkgsrc
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. endif
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PREFER.${_pkg_}?= ${_BLTN_PREFER.${_pkg_}}
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. if empty(_BUILTIN_PKGS:M${_pkg_})
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_BUILTIN_PKGS+= ${_pkg_}
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. endif
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.endfor
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.include "../../mk/buildlink3/find-libs.mk"
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.include "../../mk/buildlink3/find-headers.mk"
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.include "../../mk/buildlink3/find-files.mk"
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