CMAKE_SYSROOT_LINK
Path to pass to the compiler in the --sysroot flag when linking. This is the same as CMAKE_SYSROOT but is used only for linking and not compiling sources.
This variable may only be set in a toolchain file specified by the CMAKE_TOOLCHAIN_FILE variable.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.15/variable/CMAKE_SYSROOT_LINK.html