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Create a "params" file in the top-level .OBJDIR during "make build".

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This file will contain the values of all variables that can affect
the build process.  Take care not to update the file's timestamp if
the contents do not change.

${_SRC_TOP_OBJ}/params is referenced by ${_NETBSD_VERSION_DEPENDS} in
bsd.own.mk.

Rename the old "params" target to "show-params".  This simply
prints the values of the variables that can affect the build.
This commit is contained in:
apb 2012-11-04 11:02:11 +00:00
parent 9a72dfd1d1
commit 1c0de10687
1 changed files with 25 additions and 2 deletions
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27
Makefile
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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.299 2012/08/17 16:22:27 joerg Exp $
# $NetBSD: Makefile,v 1.300 2012/11/04 11:02:11 apb Exp $
#
# This is the top-level makefile for building NetBSD. For an outline of
@ -87,6 +87,8 @@
# do-top-obj: creates the top level object directory.
# do-tools-obj: creates object directories for the host toolchain.
# do-tools: builds host toolchain.
# params: record the values of variables that might affect the
# build.
# obj: creates object directories.
# do-distrib-dirs: creates the distribution directories.
# includes: installs include files.
@ -222,6 +224,7 @@ BUILDTARGETS+= do-tools-obj
.endif
BUILDTARGETS+= do-tools
.endif # USETOOLS # }
BUILDTARGETS+= params
.if ${MKOBJDIRS} != "no"
BUILDTARGETS+= obj
.endif
@ -251,6 +254,26 @@ BUILDTARGETS+= do-obsolete
includes-lib: .PHONY includes-include includes-sys
includes-gnu: .PHONY includes-lib
#
# Record the values of variables that might affect the build.
# If no values have changed, avoid updating the timestamp
# of the params file.
#
# This is referenced by _NETBSD_VERSION_DEPENDS in <bsd.own.mk>.
#
CLEANDIRFILES+= params
params: .EXEC
${_MKMSG_CREATE} params
@(${MAKEDIRTARGET:S/^@//} etc params) >${.TARGET}.new
@if cmp -s ${.TARGET}.new ${.TARGET} > /dev/null 2>&1; then \
: "params is unchanged" ; \
rm ${.TARGET}.new ; \
else \
: "params has changed or is new" ; \
mv ${.TARGET}.new ${.TARGET} ; \
fi
#
# Build the system and install into DESTDIR.
#
@ -508,5 +531,5 @@ dependall-distrib depend-distrib all-distrib: .PHONY
#
# Display current make(1) parameters
#
params: .PHONY .MAKE
show-params: .PHONY .MAKE
${MAKEDIRTARGET} etc params