tests/Makefile.include: don't use TARGET_DIRS for check-tcg

TARGET_DIRS reflects what we wanted to configure which in the normal
case is all our targets. However once meson has pared-down our target
list due to missing features we need to check the final list of
ninja-targets. This prevents check-tcg barfing on a --disable-tcg
build.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210202134001.25738-14-alex.bennee@linaro.org>

tests/Makefile.include

@@ -40,11 +40,13 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
 
 SPEED = quick
 
-# Per guest TCG tests
+# Build up our target list from the filtered list of ninja targets
+TARGETS=$(patsubst libqemu-%.fa, %, $(filter libqemu-%.fa, $(ninja-targets)))
 
-BUILD_TCG_TARGET_RULES=$(patsubst %,build-tcg-tests-%, $(TARGET_DIRS))
-CLEAN_TCG_TARGET_RULES=$(patsubst %,clean-tcg-tests-%, $(TARGET_DIRS))
-RUN_TCG_TARGET_RULES=$(patsubst %,run-tcg-tests-%, $(TARGET_DIRS))
+# Per guest TCG tests
+BUILD_TCG_TARGET_RULES=$(patsubst %,build-tcg-tests-%, $(TARGETS))
+CLEAN_TCG_TARGET_RULES=$(patsubst %,clean-tcg-tests-%, $(TARGETS))
+RUN_TCG_TARGET_RULES=$(patsubst %,run-tcg-tests-%, $(TARGETS))
 
 # Probe for the Docker Builds needed for each build
 $(foreach PROBE_TARGET,$(TARGET_DIRS), 				\