Add -gcc-toolchain flag to swift-driver
#1307
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@swift-ci please test |
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@etcwilde from what I gather |
GCC toolchains are useful when cross-compiling to Linux with a given gcc toolchain. The gcc toolchain contains tools for linking, libraries for linking against, and the headers that map to those libraries. This patch adds a gcc-toolchain flag to the driver so that Swift can pass that down to both the clang importer and clang linker appropriately.
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@swift-ci please test |
artemcm
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Apr 12, 2023
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GCC toolchains are useful when cross-compiling to Linux with a given gcc toolchain. The gcc toolchain contains tools for linking, libraries for linking against, and the headers that map to those libraries.
This patch adds a
-gcc-toolchainflag to the driver so that Swift can pass that information down to both the clang importer and clang linker appropriately.I went with the double-dash, equals format passed to clang because maskray keeps poking at the clang flags and that format is the only one that goes all of the way back (to 2013). I'm also passing the path down directly instead of reinterpreting them as an absolute path. The driver seems to use the
-working-directorypath to resolve most of these instead of the current working directory path, which I believe is inconsistent with Clang. Letting clang deal with the paths will, by definition, be consistent with clang. Yes, little Bobby Tables is waiting to make a mess of things.