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142471fcc4
Introduce the concept of "target query" and "resolved target". A target query is what the user specifies, with some things left to default. A resolved target has the default things discovered and populated. In the future, std.zig.CrossTarget will be rename to std.Target.Query. Introduces `std.Build.resolveTargetQuery` to get from one to the other. The concept of `main_mod_path` is gone, no longer supported. You have to put the root source file at the module root now. * remove deprecated API * update build.zig for the breaking API changes in this branch * move std.Build.Step.Compile.BuildId to std.zig.BuildId * add more options to std.Build.ExecutableOptions, std.Build.ObjectOptions, std.Build.SharedLibraryOptions, std.Build.StaticLibraryOptions, and std.Build.TestOptions. * remove `std.Build.constructCMacro`. There is no use for this API. * deprecate `std.Build.Step.Compile.defineCMacro`. Instead, `std.Build.Module.addCMacro` is provided. - remove `std.Build.Step.Compile.defineCMacroRaw`. * deprecate `std.Build.Step.Compile.linkFrameworkNeeded` - use `std.Build.Module.linkFramework` * deprecate `std.Build.Step.Compile.linkFrameworkWeak` - use `std.Build.Module.linkFramework` * move more logic into `std.Build.Module` * allow `target` and `optimize` to be `null` when creating a Module. Along with other fields, those unspecified options will be inherited from parent `Module` when inserted into an import table. * the `target` field of `addExecutable` is now required. pass `b.host` to get the host target.
52 lines
1.7 KiB
Zig
52 lines
1.7 KiB
Zig
const std = @import("std");
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pub const requires_stage2 = true;
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pub fn build(b: *std.Build) void {
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// Wasm Object file which we will use to infer the features from
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const c_obj = b.addObject(.{
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.name = "c_obj",
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.optimize = .Debug,
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.target = b.resolveTargetQuery(.{
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.cpu_arch = .wasm32,
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.cpu_model = .{ .explicit = &std.Target.wasm.cpu.bleeding_edge },
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.os_tag = .freestanding,
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}),
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});
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c_obj.addCSourceFile(.{ .file = .{ .path = "foo.c" }, .flags = &.{} });
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// Wasm library that doesn't have any features specified. This will
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// infer its featureset from other linked object files.
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const lib = b.addExecutable(.{
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.name = "lib",
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.root_source_file = .{ .path = "main.zig" },
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.optimize = .Debug,
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.target = b.resolveTargetQuery(.{
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.cpu_arch = .wasm32,
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.cpu_model = .{ .explicit = &std.Target.wasm.cpu.mvp },
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.os_tag = .freestanding,
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}),
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});
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lib.entry = .disabled;
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lib.use_llvm = false;
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lib.use_lld = false;
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lib.addObject(c_obj);
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// Verify the result contains the features from the C Object file.
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const check = lib.checkObject();
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check.checkInHeaders();
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check.checkExact("name target_features");
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check.checkExact("features 7");
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check.checkExact("+ atomics");
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check.checkExact("+ bulk-memory");
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check.checkExact("+ mutable-globals");
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check.checkExact("+ nontrapping-fptoint");
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check.checkExact("+ sign-ext");
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check.checkExact("+ simd128");
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check.checkExact("+ tail-call");
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const test_step = b.step("test", "Run linker test");
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test_step.dependOn(&check.step);
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b.default_step = test_step;
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}
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