diff options
Diffstat (limited to 'include/make/options.mk')
| -rw-r--r-- | include/make/options.mk | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/include/make/options.mk b/include/make/options.mk index 022981c..d212586 100644 --- a/include/make/options.mk +++ b/include/make/options.mk @@ -23,14 +23,15 @@ build_options = $(foreach opt,$(use_opts),$(call ignore_implicit,$(opt))) # Make a list of all known features with +/- prepended depending on their # activation status. Must be a macro so that dynamically enabled ones are # evaluated with their current status. -build_features = $(foreach opt,$(patsubst USE_%,%,$(sort $(use_opts))),$(if $(USE_$(opt)),+$(opt),-$(opt))) +build_features = $(foreach opt,$(patsubst USE_%,%,$(sort $(use_opts))),$(if $(USE_$(opt):0=),+$(opt),-$(opt))) -# This returns a list of -DUSE_* for all known USE_* that are set -opts_as_defines = $(foreach opt,$(use_opts),$(if $($(opt)),-D$(opt),)) +# This returns a list of -DUSE_* for all known USE_* that are set to anything +# neither empty nor '0'. +opts_as_defines = $(foreach opt,$(use_opts),$(if $($(opt):0=),-D$(opt),)) # Lists all enabled or disabled options without the "USE_" prefix -enabled_opts = $(foreach opt,$(patsubst USE_%,%,$(use_opts)),$(if $(USE_$(opt)),$(opt),)) -disabled_opts = $(foreach opt,$(patsubst USE_%,%,$(use_opts)),$(if $(USE_$(opt)),,$(opt))) +enabled_opts = $(foreach opt,$(patsubst USE_%,%,$(use_opts)),$(if $(USE_$(opt):0=),$(opt),)) +disabled_opts = $(foreach opt,$(patsubst USE_%,%,$(use_opts)),$(if $(USE_$(opt):0=),,$(opt))) # preset all XXX_{INC,LIB,CFLAGS,LDFLAGS,SRC} variables to empty for $1=XXX reset_opt_vars = $(foreach name,INC LIB CFLAGS LDFLAGS SRC,$(eval $(1)_$(name)=)) @@ -50,3 +51,15 @@ endef # collect all enabled USE_foo's foo_{C,LD}FLAGS into OPTIONS_{C,LD}FLAGS collect_opts_flags = $(foreach opt,$(enabled_opts),$(eval $(call collect_opt_flags,$(opt)))) + +# Check that any USE_* variable that was forced actually exist. For this we'll +# build a list of the MAKEOVERRIDES variables that start with USE_*, and keep +# the ones that do not match any of the patterns built by appending '=%' to all +# use_opts. The outstanding ones are thus unknown and each of them produces a +# warning. +warn_unknown_options = \ + $(foreach unknown, \ + $(filter-out $(foreach opt,$(use_opts),$(opt:==%)), \ + $(foreach opt,$(MAKEOVERRIDES), \ + $(strip $(filter USE_%,$(opt))))), \ + $(warning Warning: ignoring unknown build option: $(unknown))) |