Makefile: initial setup

[matyaskopp]

• sample validation with schema
• characters check
• prerequisites check
• consider splitting Makefile into multiple files:
  • Makefile.dev
  • Makefile.local (include only if exists, not part of repository)
• help and documentation
  • somehow highlight targets that are used in
    • GitHub actions
    • Distro scripts

[matyaskopp]

I have introduced new variables for paths to files and directories, so changes can be made in one place:

PressMint/Makefile

Lines 31 to 37 in ef17524

	ROOT_FORMATS := TEI TEI.ana
	# Generate PATHROOT_{TEI,TEI.ana}_XX = $(DATADIR)/PressMint-XX/PressMint-XX{,.ana}.xml
	$(foreach f,$(ROOT_FORMATS), $(foreach c,$(PRESS), $(eval PATHROOT_$(f)_$(c) := $(DATADIR)/PressMint-$(c)/PressMint-$(c)$(subst TEI,,$(f)).xml) ) )
	# Generate PATHBASE_{TEI,TEI.ana}_XX = $(DATADIR)/PressMint-XX
	$(foreach f,$(ROOT_FORMATS), $(foreach c,$(PRESS), $(eval PATHBASE_$(f)_$(c) := $(DATADIR)/PressMint-$(c)) ) )

I will continue with the same attitude for new additional paths