Makefile: move check for ROOTPW out of target context

We want to minimize complexity of the targets.

1 files changed, 17 insertions, 13 deletions

diff --git a/Makefile b/Makefile
index 0a09188..eec8c62 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,7 @@ BOOTTARGETS := $(foreach template, $(TEMPLATES), $(template)/base/boot)
 BOOTTARGETS += $(foreach prov, $(PROVTARGETS), $(prov)/boot)
 
 
+
 PACKER_OPTS := -var-file=base.json
 ifdef DEBUG
     VERBOSE     := 1
@@ -51,6 +52,22 @@ endif
 TIMESTAMP := $(shell date "+%Y-%m-%d_%H-%M-%S")
 
 
+# The ROOTPW is only needed for the base, boot and provisioning targets.
+# In every other case it must not be checked as it should be possible to call
+# help or cleanup without the need of defining the password.
+PW_NEEDED := $(filter $(strip $(PROVTARGETS) $(BOOTTARGETS)),$(MAKECMDGOALS))
+ifneq ($(PW_NEEDED),)
+    ifeq ($(strip $(ROOTPW)),)
+        $(error No root password is set, set it as ROOTPW in your environment.)
+    else
+        $(foreach cur,$(PW_NEEDED),\
+            $(shell printf "$(ROOTPW)" | $(HASHER) --check --status "$(firstword $(subst /, ,$(cur)))/base/rootpw.$(HASHER)")\
+            $(if $(filter 1,$(.SHELLSTATUS)),\
+                $(error The wrong ROOTPW is set. Please correct it)))
+    endif
+endif
+
+
 ifdef VERBOSE
     PACKER_OPTS += -var='headless=false'
 
@@ -74,23 +91,12 @@ ifdef VERBOSE
 endif
 
 
-check_rootpw = $(if $(strip $(ROOTPW)),\
-    $(if $1,\
-        $(if $(shell echo "$(ROOTPW)" | $(HASHER) --check --quiet $1/base/rootpw.$(HASHER)),\
-            $(error ROOTPW password hash does not match $1/base/rootpw.$(HASHER)),\
-            ),\
-        ),\
-    $(error No root password is set, set it as ROOTPW in your environment.) \
-)
-
-
 .PHONY: help clean_except_last clean_bases clean_all
 help:
 
 
 # Creating base images
 $(BASETARGETS):
-	$(call check_rootpw)
 	$(info ** Building template '$(@D)' using '$(BUILDER)' **)
 	$(PACKER) build -only=$(BUILDER) \
 		$(PACKER_OPTS) \
@@ -103,7 +109,6 @@ $(BASETARGETS):
 # Provisioning images
 $(PROVTARGETS):
 $(foreach flav, $(FLAVORS), %/$(flav)): %/base
-	$(call check_rootpw,$(@D))
 	$(eval BUILD_DIR := $(@D)/$(@F).$(TIMESTAMP))
 	$(info ** Provisioning '$(@D)' with '$(@F)' **)
 	@mkdir -p $(BUILD_DIR)
@@ -121,7 +126,6 @@ $(foreach flav, $(FLAVORS), %/$(flav)): %/base
 # Generating boot files
 $(BOOTTARGETS):
 %/boot: %
-	$(call check_rootpw,$(dir $(@D)))
 	$(eval BUILD_DIR := $(@D).$(TIMESTAMP))
 	$(info ** Generating boot files for '$(BUILD_DIR)')
 	$(PACKER) build -only=$(BUILDER) \