diff --git a/cmake/modules/AddSwift.cmake b/cmake/modules/AddSwift.cmake index 267f09a3e6fd8..33d14ea530623 100644 --- a/cmake/modules/AddSwift.cmake +++ b/cmake/modules/AddSwift.cmake @@ -1403,10 +1403,27 @@ function(_add_swift_library_single target name) # Include LLVM Bitcode slices for iOS, Watch OS, and Apple TV OS device libraries. if(SWIFT_EMBED_BITCODE_SECTION AND NOT SWIFTLIB_SINGLE_DONT_EMBED_BITCODE) if(${SWIFTLIB_SINGLE_SDK} MATCHES "(I|TV|WATCH)OS") - target_link_options(${target} PRIVATE - "LINKER:-bitcode_bundle" - $<$:"LINKER:-bitcode_hide_symbols"> - "LINKER:-lto_library,${LLVM_LIBRARY_DIR}/libLTO.dylib") + # The two branches of this if statement accomplish the same end result + # We are simply accounting for the fact that on CMake < 3.16 + # using a generator expression to + # specify a LINKER: argument does not work, + # since that seems not to allow the LINKER: prefix to be + # evaluated (i.e. it will be added as-is to the linker parameters) + if(CMAKE_VERSION VERSION_LESS 3.16) + target_link_options(${target} PRIVATE + "LINKER:-bitcode_bundle" + "LINKER:-lto_library,${LLVM_LIBRARY_DIR}/libLTO.dylib") + + if(SWIFT_EMBED_BITCODE_SECTION_HIDE_SYMBOLS) + target_link_options(${target} PRIVATE + "LINKER:-bitcode_hide_symbols") + endif() + else() + target_link_options(${target} PRIVATE + "LINKER:-bitcode_bundle" + $<$:"LINKER:-bitcode_hide_symbols"> + "LINKER:-lto_library,${LLVM_LIBRARY_DIR}/libLTO.dylib") + endif() endif() endif() endif()