diff mbox

Makefile: add variable print capabilities

Message ID 1369780871-26263-1-git-send-email-yann.morin.1998@free.fr
State Accepted
Headers show

Commit Message

Yann E. MORIN May 28, 2013, 10:41 p.m. UTC 
From: Émeric Vigier <emeric.vigier@savoirfairelinux.com>

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>
---
 Makefile | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/Makefile b/Makefile
index a57975e..225bc13 100644
--- a/Makefile
+++ b/Makefile
@@ -402,7 +402,7 @@  toolchain: prepare dirs dependencies $(BASE_TARGETS)
 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) \
 	$(TOOLCHAIN_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
@@ -730,6 +730,14 @@  ifeq ($(NEED_WRAPPER),y)
 	$(Q)$(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) $(TOOLCHAIN_DIR) $(BASE_DIR)/staging \