find_cc_toolchain: Don't fail on missing toolchain if mandatory = False
#298
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…False` `find_cc_toolchain` is sometimes used by helper functions that may not have knowledge of the rule calling them. Making the function not fail if the calling rule did not use `use_cc_toolchain()` allows callers to avoid checking if `CC_TOOLCHAIN_TYPE` is in `ctx.toolchains` before calling `find_cc_toolchain`.
Yannic
requested review from
trybka,
armandomontanez,
pzembrod,
comius and
c-mita
as code owners
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The test failure looks unrelated |
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find_cc_toolchainis sometimes used by helper functions that may not have knowledge of the rule calling them. Making the function not fail if the calling rule did not useuse_cc_toolchain()allows callers to avoid checking ifCC_TOOLCHAIN_TYPEis inctx.toolchainsbefore callingfind_cc_toolchain.