blob: 4a8f78b41d2f6f8254164dccf5fe375b193dc957 [file] [log] [blame]
# -*- makefile -*-
# -----------------------------------------------------------------------
# Intent: Dependency-free macros used to source library makefiles
# and define the build environment.
# -----------------------------------------------------------------------
$(if $(DEBUG-bootstrap_mk),$(warning ENTER))
##---------------------##
##---] CONSTANTS [---##
##---------------------##
is-false = $(if $(1),true,$(null))
is-true = $(if $(1),$(null),true)
##--------------------------##
##---] LIBRARY MACROS [---##
##--------------------------##
is-null = $(if $(1),$(null),$(error $(1)= is undef))
is-null-var = $(if $$(1),$(null),$(error $(1)= is undef))
is-null-var-indirect = $(if $(1),$(null),$(error $(1)= is undef))
## variable flavor:
# origin - undefned
# default
# environment
# environment override
# automatic
# null(blah) ? - true
## -----------------------------------------------------------------------
## Intent: Given an indirect var containing varname of a makefile *_ROOT
## parent director, derive a *_MKDIR variable and conditionally
## include the makefile hierarchy.
## -----------------------------------------------------------------------
## Given:
## o var containing OPT_ROOT=path
## Return:
## o OPT_MKDIR=$(OPT_ROOT)/makefiles
## o If exists include $(OPT_MKDIR)/include.mk
## -----------------------------------------------------------------------
mk-library-include=$(strip \
$(warning mk-library-include: $(1) = $($(1)))\
$(call is-null-var,1)\
$(foreach var,$$(1),\
$(info var=$(var) is-null=$(call is-null-var,var))\
$(foreach val,$$(var),\
$(info val=$(val))\
$(foreach makedir,$(subst _ROOT,_MKDIR,$(var)),\
$(warning makedir=$(makedir))\
$(if $($(makedir)),$(null),\
$(eval $(makedir)=$$$$($(var))/makefiles-orig)\
$(warning $(makedir) = $($($(makedir))))\
$(info $$(wildcard $(val)/makefiles-orig/include.mk) = $(wildcard $(val)/makefiles-orig/include.mk))\
$(foreach mf,$(wildcard $(wildcard $(val)/makefiles-orig/include.mk)),\
$(warning $$(eval include $(mf)))\
$(eval include $(mf)))\
)
$(if $(DEBUG-bootstrap_mk),$(warning LEAVE))
# [EOF]