Merge topic 'try-link-ld-warning-no_pie'

f745e0497e CheckCompilerFlags: Catch linker warning about ignored flags

Acked-by: Kitware Robot <[email protected]>
Tested-by: buildbot <[email protected]>
Merge-request: !6836

Modules/CMakeCheckCompilerFlagCommonPatterns.cmake

@@ -13,6 +13,7 @@ macro (CHECK_COMPILER_FLAG_COMMON_PATTERNS _VAR)
     FAIL_REGEX "unknown .*option"                          # Clang
     FAIL_REGEX "optimization flag .* not supported"        # Clang
     FAIL_REGEX "unknown argument ignored"                  # Clang (cl)
+    FAIL_REGEX "warning: .* ignored"                       # Clang (linker)
     FAIL_REGEX "ignoring unknown option"                   # MSVC, Intel
     FAIL_REGEX "warning D9002"                             # MSVC, any lang
     FAIL_REGEX "option.*not supported"                     # Intel