Currently the print-variable rule can only be used in the
root directory:
$ make print-vhost-user-json-y
vhost-user-json-y= contrib/vhost-user-gpu/50-qemu-gpu.json tools/virtiofsd/50-qemu-virtiofsd.json
$ make -C i386-softmmu print-obj-y
make: Entering directory 'build/i386-softmmu'
make: *** No rule to make target 'print-obj-y'. Stop.
make: Leaving directory 'build/i386-softmmu'
Move it to rules.mak so we can use it from other directories:
$ make -C i386-softmmu print-obj-y
make: Entering directory 'build/i386-softmmu'
obj-y=qapi-introspect.o qapi-types-machine-target.o qapi-types-misc-target.o qapi-types.o qapi-visit-machine-target.o qapi-visit-misc-target.o qapi-visit.o qapi-events-machine-target.o qapi-events-misc-target.o qapi-events.o qapi-commands-machine-target.o qapi-commands-misc-target.o qapi-commands.o qapi-init-commands.o
make: Leaving directory 'build/i386-softmmu'
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <
20200306170456.21977-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
help check-help print-% \
docker docker-% vm-help vm-test vm-build-%
-print-%:
- @echo '$*=$($*)'
-
# All following code might depend on configuration variables
ifneq ($(wildcard config-host.mak),)
# Put the all: rule here so that config-host.mak can contain dependencies.
atomic = $(eval $1: $(call sentinel,$1) ; @:) \
$(call sentinel,$1) : $2 ; @touch $$@ \
$(foreach t,$1,$(if $(wildcard $t),,$(shell rm -f $(call sentinel,$1))))
+
+print-%:
+ @echo '$*=$($*)'