diff options
| author | Jerome Forissier <jerome.forissier@linaro.org> | 2014-11-14 17:13:40 +0100 |
|---|---|---|
| committer | Jerome Forissier <jerome.forissier@linaro.org> | 2014-11-25 15:15:42 +0100 |
| commit | 0a7f95b9a565475390f041e6adc50974c049e3cd (patch) | |
| tree | 7d4dcb3ba186fcd4947fb28359dbed26b50ef96c /mk/checkconf.mk | |
| parent | d8e06e12b1fb85fda098ba4e6936d9230278adbf (diff) | |
mk/checkconf.mk: add utility functions to test configuration variables
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Diffstat (limited to 'mk/checkconf.mk')
| -rw-r--r-- | mk/checkconf.mk | 53 |
1 files changed, 50 insertions, 3 deletions
diff --git a/mk/checkconf.mk b/mk/checkconf.mk index 863b81ad..1b6afa7c 100644 --- a/mk/checkconf.mk +++ b/mk/checkconf.mk @@ -2,7 +2,7 @@ # variables # # Example usage (by default, check-conf-h will consider all CFG_* -# variables): +# and _CFG_* variables): # # path/to/conf.h: FORCE # $(call check-conf-h) @@ -11,7 +11,6 @@ # # path/to/crypto_config.h: FORCE # $(call check-conf-h,CFG_CRYPTO_ CRYPTO_) - define check-conf-h $(q)set -e; \ echo ' CHK $@'; \ @@ -34,7 +33,7 @@ endef define cfg-vars-by-prefix $(strip $(if $(1),$(call _cfg-vars-by-prefix,$(1)), - $(call _cfg-vars-by-prefix,CFG_))) + $(call _cfg-vars-by-prefix,CFG_ _CFG_))) endef define _cfg-vars-by-prefix @@ -52,3 +51,51 @@ define cfg-make-define /* $1 is not set ('$($1)') */_nl_, #define $1 $($1) /* '$($1)' */_nl_))) endef + +# Returns 'y' if at least one variable is 'y', empty otherwise +# Example: +# FOO_OR_BAR := $(call cfg-one-enabled, FOO BAR) +cfg-one-enabled = $(if $(filter y, $(foreach var,$(1),$($(var)))),y,) + +# Returns 'y' if all variables are 'y', empty otherwise +# Example: +# FOO_AND_BAR := $(call cfg-all-enabled, FOO BAR) +cfg-all-enabled = \ + $(strip \ + $(if $(1), \ + $(if $(filter y,$($(firstword $(1)))), \ + $(call cfg-all-enabled,$(filter-out $(firstword $(1)),$(1))), \ + ), \ + y \ + ) \ + ) + +# Disable a configuration variable if some dependency is disabled +# Example: +# $(eval $(call cfg-depends-all,FOO,BAR BAZ)) +# Will clear FOO if it is initially 'y' and BAR or BAZ are not 'y' +cfg-depends-all = \ + $(strip \ + $(if $(filter y, $($(1))), \ + $(if $(call cfg-all-enabled,$(2)), \ + , \ + $(warning Warning: Disabling $(1) [requires $(strip $(2))]) \ + override $(1) := \ + ) \ + ) \ + ) + +# Disable a configuration variable if all dependencies are disabled +# Example: +# $(eval $(call cfg-depends-one,FOO,BAR BAZ)) +# Will clear FOO if it is initially 'y' and both BAR and BAZ are not 'y' +cfg-depends-one = \ + $(strip \ + $(if $(filter y, $($(1))), \ + $(if $(call cfg-one-enabled,$(2)), \ + , \ + $(warning Warning: Disabling $(1) [requires (one of) $(strip $(2))]) \ + override $(1) := \ + ) \ + ) \ + ) |