Allow a user-overridable setting 'PKG_CMD' to control the command used

to create a repo during 'make packages'

This would have been useful for a situation I found myself in where
pkg(8) had been upgraded to a version that wanted the FBSD_1.5 ABI
version but libc.so.7 had not been upgraded, and only provided
FBSD_1.4. I found I needed to update libc in order to run pkg, and I
also needed to use pkg to update libc... Which is why pkg-static
exists, but there's currently no way to tell the build system to use
pkg-static instead of pkg.

This creates a variable PKG_CMD, default value 'pkg', that can be
overridden from the command line.

Reviewed by:	gjb
Approved by:	gjb
Differential Revision:	https://reviews.freebsd.org/D8120

Makefile.inc1

@@ -1379,7 +1379,8 @@ packages: .PHONY
 package-pkg: .PHONY
 	rm -rf /tmp/ports.${TARGET} || :
 	env ${WMAKEENV:Q} SRCDIR=${.CURDIR} PORTSDIR=${PORTSDIR} REVISION=${_REVISION} \
-		PKG_VERSION=${PKG_VERSION} REPODIR=${REPODIR} WSTAGEDIR=${WSTAGEDIR} \
+		PKG_CMD=${PKG_CMD} PKG_VERSION=${PKG_VERSION} REPODIR=${REPODIR} \
+		WSTAGEDIR=${WSTAGEDIR} \
 		sh ${.CURDIR}/release/scripts/make-pkg-package.sh
 
 real-packages:	stage-packages create-packages sign-packages .PHONY
@@ -1417,11 +1418,11 @@ create-world-packages:	_pkgbootstrap .PHONY
 			/^name/ { printf("===> Creating %s-", $$2); next } \
 			/^version/ { print $$2; next } \
 			' ${WSTAGEDIR}/$${pkgname}.ucl ; \
-		pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
+		${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
 			create -M ${WSTAGEDIR}/$${pkgname}.ucl \
 			-p ${WSTAGEDIR}/$${pkgname}.plist \
 			-r ${WSTAGEDIR} \
-			-o ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} ; \
+			-o ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} ; \
 	done
 
 create-kernel-packages:	_pkgbootstrap .PHONY
@@ -1445,11 +1446,11 @@ create-kernel-packages:	_pkgbootstrap .PHONY
 		/name/ { printf("===> Creating %s-", $$2); next } \
 		/version/ {print $$2; next } ' \
 		${KSTAGEDIR}/${DISTDIR}/kernel.${INSTALLKERNEL}${flavor}.ucl ; \
-	pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
+	${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
 		create -M ${KSTAGEDIR}/${DISTDIR}/kernel.${INSTALLKERNEL}${flavor}.ucl \
 		-p ${KSTAGEDIR}/${DISTDIR}/kernel.${INSTALLKERNEL}${flavor}.plist \
 		-r ${KSTAGEDIR}/${DISTDIR} \
-		-o ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
+		-o ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
 .endfor
 .endif
 .if ${BUILDKERNELS:[#]} > 1 && ${NO_INSTALLEXTRAKERNELS} != "yes"
@@ -1474,25 +1475,25 @@ create-kernel-packages:	_pkgbootstrap .PHONY
 		/name/ { printf("===> Creating %s-", $$2); next } \
 		/version/ {print $$2; next } ' \
 		${KSTAGEDIR}/kernel.${_kernel}/kernel.${_kernel}${flavor}.ucl ; \
-	pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
+	${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh -o ALLOW_BASE_SHLIBS=yes \
 		create -M ${KSTAGEDIR}/kernel.${_kernel}/kernel.${_kernel}${flavor}.ucl \
 		-p ${KSTAGEDIR}/kernel.${_kernel}/kernel.${_kernel}${flavor}.plist \
 		-r ${KSTAGEDIR}/kernel.${_kernel} \
-		-o ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
+		-o ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
 .endfor
 .endif
 .endfor
 .endif
 
 sign-packages:	_pkgbootstrap .PHONY
-	@[ -L "${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest" ] && \
-		unlink ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest ; \
-	pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh repo \
-		-o ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
-		${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
+	@[ -L "${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest" ] && \
+		unlink ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest ; \
+	${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh repo \
+		-o ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
+		${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
 		${PKGSIGNKEY} ; \
-	ln -s ${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
-		${REPODIR}/$$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest
+	ln -s ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION} \
+		${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/latest
 
 #
 #

release/scripts/make-pkg-package.sh

@@ -8,6 +8,7 @@ eval $(make -C ${SRCDIR} TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} buildenvvar
 export WRKDIRPREFIX=/tmp/ports.${TARGET}
 export WSTAGEDIR=${WSTAGEDIR}
 export REPODIR=${REPODIR}
+export PKG_CMD=${PKG_CMD}
 export PKG_VERSION=${PKG_VERSION}
 export WRKDIR=$(make -C ${PORTSDIR}/ports-mgmt/pkg -V WRKDIR)
 
@@ -15,11 +16,11 @@ make -C ${PORTSDIR}/ports-mgmt/pkg TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
 	CONFIGURE_ARGS="--host=$(uname -m)-portbld-freebsd${REVISION}" \
 	stage create-manifest
 
-pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh \
+${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh \
 	create -v -m ${WRKDIR}/.metadir/ \
 	-r ${WRKDIR}/stage \
 	-p ${WRKDIR}/.PLIST.mktmp \
-	-o ${REPODIR}/$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
-mkdir -p ${REPODIR}/$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}/Latest/
-cd ${REPODIR}/$(pkg -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}/Latest/ && \
+	-o ${REPODIR}/$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}
+mkdir -p ${REPODIR}/$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}/Latest/
+cd ${REPODIR}/$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/bin/sh config ABI)/${PKG_VERSION}/Latest/ && \
 	ln -s ../pkg-*.txz

share/mk/bsd.own.mk

@@ -116,6 +116,9 @@
 # NLSMODE	National Language Support files mode. [${NOBINMODE}]
 #
 # INCLUDEDIR	Base path for standard C include files [/usr/include]
+#
+# PKG_CMD	Program for creating and manipulating packages.
+#               [pkg] 
 
 .if !target(__<bsd.own.mk>__)
 __<bsd.own.mk>__:
@@ -249,6 +252,8 @@ XZ_CMD?=	xz -T ${XZ_THREADS}
 XZ_CMD?=	xz
 .endif
 
+PKG_CMD?=	pkg
+
 # Pointer to the top directory into which tests are installed.  Should not be
 # overriden by Makefiles, but the user may choose to set this in src.conf(5).
 TESTSBASE?= /usr/tests