Makefile: add variable print capabilities
Add a new goal that dumps all of our variables.
Taken from http://www.cmcrossroads.com/ask-mr-make/6521-dumping-every-makefile-variable
Signed-off-by: Emeric Vigier <emeric.vigier@savoirfairelinux.com>
[yann.morin.1998@free.fr: drop per-variable print; refresh patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/Makefile b/Makefile
index 0cd7f55..5a0c64a 100644
--- a/Makefile
+++ b/Makefile
@@ -407,7 +407,7 @@
world: toolchain $(TARGETS_ALL)
.PHONY: all world toolchain dirs clean distclean source outputmakefile \
- legal-info legal-info-prepare legal-info-clean \
+ legal-info legal-info-prepare legal-info-clean printvars \
$(BASE_TARGETS) $(TARGETS) $(TARGETS_ALL) \
$(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) $(TARGETS_LEGAL_INFO) \
$(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
@@ -731,6 +731,14 @@
$(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
endif
+# printvars prints all the variables currently defined in our Makefiles
+printvars:
+ @$(foreach V, \
+ $(sort $(.VARIABLES)), \
+ $(if $(filter-out environment% default automatic, \
+ $(origin $V)), \
+ $(info $V=$($V) ($(value $V)))))
+
clean:
rm -rf $(STAGING_DIR) $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
$(STAMP_DIR) $(BUILD_DIR) $(BASE_DIR)/staging \