build: use the target variables for the ICU check #19418
Merged
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The ICU library is used for the target library, not the host tools. Use the
appropriate variable
SWIFT_PRIMARY_VARIANT_SDK
andSWIFT_PRIMARY_VARIANT_ARCH
to select the right CMake variables for the ICUdefinitions. There is no need to use the
_default
suffixed versions as thedefaults have already been used to set the value above.
Replace this paragraph with a description of your changes and rationale. Provide links to external references/discussions if appropriate.
Resolves SR-NNNN.