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Swift currently fails to build if `dev-libs/libdispatch` is installed because it globally installs private `libdispatch` headers which get unexpectedly picked up during the Swift build. Since the headers are not expected to be present when building Swift on non-Darwin platforms, the check for the header can be patched out. Signed-off-by: Itai Ferber <itai@itaiferber.net>
24 lines
1.1 KiB
Diff
24 lines
1.1 KiB
Diff
# `DispatchGlobalExecutor` checks for the presence of `dispatch/private.h` for
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# certain low-level libdispatch functionality, and because the header is
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# normally only available on Darwin platforms (it is never installed as part of
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# a normal Swift build on any platform), makes certain assumptions about
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# symbols available there. However, `dev-libs/libdispatch` explicitly installs
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# private headers system-wide for `gnustep-base/libobjc2`, and those get picked
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# up during the Swift build. Because of the structure of the header on Linux,
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# anyone who has `dev-libs/libdispatch` installed will fail to build.
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--- a/swift/stdlib/public/Concurrency/DispatchGlobalExecutor.inc
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+++ b/swift/stdlib/public/Concurrency/DispatchGlobalExecutor.inc
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@@ -33,11 +33,6 @@
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#endif
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#endif
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-#if __has_include(<dispatch/private.h>)
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-#include <dispatch/private.h>
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-#define SWIFT_CONCURRENCY_HAS_DISPATCH_PRIVATE 1
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-#endif
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-
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// Ensure that Job's layout is compatible with what Dispatch expects.
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// Note: MinimalDispatchObjectHeader just has the fields we care about, it is
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// not complete and should not be used for anything other than these asserts.
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