Reputation: 796
config_setting(
name = "arm_cpu",
values = {"cpu": "arm"},
)
objc_library(
name = "a_lib",
pch = "a.pch",
)
I want to make the "pch" attribute only take effect for arm cpu. But I don't know how to use select() function for label attributes easily. So I have to write an empty pch file and modify the BUILD file like this:
objc_library(
name = "a_lib",
pch = select({
":arm_cpu" : "a.pch",
"//conditions:default" : "empty.pch",
)},
)
Is there a better way to do this?
Upvotes: 1
Views: 283
Reputation: 20580
Generally, one can obtain the default for an attribute by using None
:
objc_library(
name = "a_lib",
pch = select({
":arm_cpu" : "a.pch",
"//conditions:default": None,
}),
)
Upvotes: 4