Fixup cross platform specs handling of DEAD_CODE_STRIPPING

[owenv]

Properly handle the various spellings of this operation

[owenv]

@swift-ci test

[jakepetroules]

Linux:

✘ Test linkerTaskConstruction() recorded an issue at CommandLineSpecTests.swift:1277:30: Expectation failed: (actual → ["clang", "-Xlinker", "-rpath", "-Xlinker", "rpath1", "-nostdlib", "-dead_strip", "-lfoo_normal_search", "-lfoo_reexport_search", "-lfoo_merge_search", "-lfoo_reexport_merge_search", "-weak-lfoo_weak_search", "/usr/lib/libfoo_normal_abs.a", "/usr/lib/libfoo_reexport_abs.a", "/usr/lib/libfoo_merge_abs.a", "/usr/lib/libfoo_reexport_merge_abs.a", "-weak_library", "/usr/lib/libfoo_weak_abs.a", "-lbar_normal_search", "-Xlinker", "-reexport-lbar_reexport_search", "-Xlinker", "-merge-lbar_merge_search", "-Xlinker", "-no_merge-lbar_reexport_merge_search", "-weak-lbar_weak_search", "/usr/lib/libbar_normal_abs.dylib", "-Xlinker", "-reexport_library", "-Xlinker", "/usr/lib/libbar_reexport_abs.dylib", "-Xlinker", "-merge_library", "-Xlinker", "/usr/lib/libbar_merge_abs.dylib", "-Xlinker", "-no_merge_library", "-Xlinker", "/usr/lib/libbar_reexport_merge_abs.dylib", "-weak_library", "/usr/lib/libbar_weak_abs.dylib", "-lbaz_normal_search", "-lbaz_reexport_search", "-lbaz_merge_search", "-lbaz_reexport_merge_search", "-weak-lbaz_weak_search", "/usr/lib/libbaz_normal_abs.tbd", "/usr/lib/libbaz_reexport_abs.tbd", "/usr/lib/libbaz_merge_abs.tbd", "/usr/lib/libbaz_reexport_merge_abs.tbd", "-weak_library", "/usr/lib/libbaz_weak_abs.tbd", "-framework", "Foo_normal_search", "-Xlinker", "-reexport_framework", "-Xlinker", "Foo_reexport_search", "-Xlinker", "-merge_framework", "-Xlinker", "Foo_merge_search", "-Xlinker", "-no_merge_framework", "-Xlinker", "Foo_reexport_merge_search", "-weak_framework", "Foo_weak_search", "/tmp/Foo_normal_abs.framework/Foo_normal_abs", "-Xlinker", "-reexport_library", "-Xlinker", "/tmp/Foo_reexport_abs.framework/Foo_reexport_abs", "-Xlinker", "-merge_library", "-Xlinker", "/tmp/Foo_merge_abs.framework/Foo_merge_abs", "-Xlinker", "-no_merge_library", "-Xlinker", "/tmp/Foo_reexport_merge_abs.framework/Foo_reexport_merge_abs", "-weak_library", "/tmp/Foo_weak_abs.framework/Foo_weak_abs", "-o", "/tmp/obj/normal/x86_64/output"]) == (expected → ["clang", "-Xlinker", "-rpath", "-Xlinker", "rpath1", "-nostdlib", "-lfoo_normal_search", "-lfoo_reexport_search", "-lfoo_merge_search", "-lfoo_reexport_merge_search", "-weak-lfoo_weak_search", "/usr/lib/libfoo_normal_abs.a", "/usr/lib/libfoo_reexport_abs.a", "/usr/lib/libfoo_merge_abs.a", "/usr/lib/libfoo_reexport_merge_abs.a", "-weak_library", "/usr/lib/libfoo_weak_abs.a", "-lbar_normal_search", "-Xlinker", "-reexport-lbar_reexport_search", "-Xlinker", "-merge-lbar_merge_search", "-Xlinker", "-no_merge-lbar_reexport_merge_search", "-weak-lbar_weak_search", "/usr/lib/libbar_normal_abs.dylib", "-Xlinker", "-reexport_library", "-Xlinker", "/usr/lib/libbar_reexport_abs.dylib", "-Xlinker", "-merge_library", "-Xlinker", "/usr/lib/libbar_merge_abs.dylib", "-Xlinker", "-no_merge_library", "-Xlinker", "/usr/lib/libbar_reexport_merge_abs.dylib", "-weak_library", "/usr/lib/libbar_weak_abs.dylib", "-lbaz_normal_search", "-lbaz_reexport_search", "-lbaz_merge_search", "-lbaz_reexport_merge_search", "-weak-lbaz_weak_search", "/usr/lib/libbaz_normal_abs.tbd", "/usr/lib/libbaz_reexport_abs.tbd", "/usr/lib/libbaz_merge_abs.tbd", "/usr/lib/libbaz_reexport_merge_abs.tbd", "-weak_library", "/usr/lib/libbaz_weak_abs.tbd", "-framework", "Foo_normal_search", "-Xlinker", "-reexport_framework", "-Xlinker", "Foo_reexport_search", "-Xlinker", "-merge_framework", "-Xlinker", "Foo_merge_search", "-Xlinker", "-no_merge_framework", "-Xlinker", "Foo_reexport_merge_search", "-weak_framework", "Foo_weak_search", "/tmp/Foo_normal_abs.framework/Foo_normal_abs", "-Xlinker", "-reexport_library", "-Xlinker", "/tmp/Foo_reexport_abs.framework/Foo_reexport_abs", "-Xlinker", "-merge_library", "-Xlinker", "/tmp/Foo_merge_abs.framework/Foo_merge_abs", "-Xlinker", "-no_merge_library", "-Xlinker", "/tmp/Foo_reexport_merge_abs.framework/Foo_reexport_merge_abs", "-weak_library", "/tmp/Foo_weak_abs.framework/Foo_weak_abs", "-o", "/tmp/obj/normal/x86_64/output"])
↳ Unexpected arguments: ["-dead_strip"]; 

[owenv]

@swift-ci test

[owenv]

@swift-ci test

[owenv]

@swift-ci test linux

[owenv]

@swift-ci test linux