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CMake: try to actually fix the regexes for setting HOST_LINK_VERSION this time (PR21268)
The regex should not accept an empty version number. The previous attempt at r223106 failed, and the build was still erroring: CMake Error at tools/clang/CMakeLists.txt:269 (string): string sub-command REGEX, mode REPLACE regex "[^0-9]*([0-9.]*).*" matched an empty string. llvm-svn: 223333
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@ -263,10 +263,10 @@ if (APPLE)
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OUTPUT_VARIABLE LD_V_OUTPUT
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)
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if (NOT HAD_ERROR)
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if ("${LD_V_OUTPUT}" MATCHES ".*ld64.*")
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string(REGEX REPLACE ".*ld64-([0-9.]*).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
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elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]*).*")
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string(REGEX REPLACE "[^0-9]*([0-9.]*).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
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if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*")
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string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
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elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*")
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string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
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endif()
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else()
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message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}")
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