docker: print warning if EXECUTABLE is not set when building debootstrap image
Building the debian-debootstrap image will usually fail if EXECUTABLE isn't set (when using the Makefile). Warn the user in this case so they know why it's failing. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-Id: <1473192351-601-6-git-send-email-silbe@linux.vnet.ibm.com> Signed-off-by: Fam Zheng <famz@redhat.com>
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@ -44,6 +44,9 @@ docker-image: ${DOCKER_TARGETS}
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# General rule for building docker images
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docker-image-%: $(DOCKER_FILES_DIR)/%.docker
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@if test "$@" = docker-image-debian-bootstrap -a -z "$(EXECUTABLE)"; then \
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echo WARNING: EXECUTABLE is not set, debootstrap may fail. 2>&1 ; \
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fi
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$(call quiet-command,\
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$(SRC_PATH)/tests/docker/docker.py build qemu:$* $< \
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$(if $V,,--quiet) $(if $(NOCACHE),--no-cache) \
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