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Diffstat (limited to 'libc/option-groups.mak')
| -rw-r--r-- | libc/option-groups.mak | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libc/option-groups.mak b/libc/option-groups.mak index 2ade410a7..7d9f9a43e 100644 --- a/libc/option-groups.mak +++ b/libc/option-groups.mak @@ -15,6 +15,16 @@ include $(firstword $(..) ../)option-groups.defaults # defaults from option-groups.defaults. -include $(option_group_config_file) +# $(call option-disabled, VAR) is 'y' if VAR is not 'y', or 'n' otherwise. +# VAR should be a variable name, not a variable reference; this is +# less general, but more terse for the intended use. +# You can use it to add a file to a list if an option group is +# disabled, like this: +# routines-$(call option-disabled, OPTION_POSIX_C_LANG_WIDE_CHAR) += ... +define option-disabled +$(firstword $(subst y,n,$(filter y,$($(strip $(1))))) y) +endef + # Establish 'routines-y', etc. as simply-expanded variables. aux-y := extra-libs-others-y := |