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zig/src-self-hosted/windows_sdk.zig

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self-hosted libc detection * libc_installation.cpp is deleted. src-self-hosted/libc_installation.zig is now used for both stage1 and stage2 compilers. * (breaking) move `std.fs.File.access` to `std.fs.Dir.access`. The API now encourages use with an open directory handle. * Add `std.os.faccessat` and related functions. * Deprecate the "C" suffix naming convention for null-terminated parameters. "C" should be used when it is related to libc. However null-terminated parameters often have to do with the native system ABI rather than libc. "Z" suffix is the new convention. For example, `std.os.openC` is deprecated in favor of `std.os.openZ`. * Add `std.mem.dupeZ` for using an allocator to copy memory and add a null terminator. * Remove dead struct field `std.ChildProcess.llnode`. * Introduce `std.event.Batch`. This API allows expressing concurrency without forcing code to be async. It requires no Allocator and does not introduce any failure conditions. However it is not thread-safe. * There is now an ongoing experiment to transition away from `std.event.Group` in favor of `std.event.Batch`. * `std.os.execvpeC` calls `getenvZ` rather than `getenv`. This is slightly more efficient on most systems, and works around a limitation of `getenv` lack of integration with libc. * (breaking) `std.os.AccessError` gains `FileBusy`, `SymLinkLoop`, and `ReadOnlyFileSystem`. Previously these error codes were all reported as `PermissionDenied`. * Add `std.Target.isDragonFlyBSD`. * stage2: access to the windows_sdk functions is done with a manually maintained .zig binding file instead of `@cImport`. * Update src-self-hosted/libc_installation.zig with all the improvements that stage1 has seen to src/libc_installation.cpp until now. In addition, it now takes advantage of Batch so that evented I/O mode takes advantage of concurrency, but it still works in blocking I/O mode, which is how it is used in stage1.
2020-02-16 10:25:30 -08:00
// C API bindings for src/windows_sdk.h
pub const ZigWindowsSDK = extern struct {
path10_ptr: ?[*]const u8,
path10_len: usize,
version10_ptr: ?[*]const u8,
version10_len: usize,
path81_ptr: ?[*]const u8,
path81_len: usize,
version81_ptr: ?[*]const u8,
version81_len: usize,
msvc_lib_dir_ptr: ?[*]const u8,
msvc_lib_dir_len: usize,
};
pub const ZigFindWindowsSdkError = extern enum {
None,
OutOfMemory,
NotFound,
PathTooLong,
};
pub extern fn zig_find_windows_sdk(out_sdk: **ZigWindowsSDK) ZigFindWindowsSdkError;
pub extern fn zig_free_windows_sdk(sdk: *ZigWindowsSDK) void;