cdd267fa10
This means that it will be possible to generate a Darwin binary on any platform (Windows, Linux, and MacOS of course), including CGo. Of course, the resulting binaries can only run on MacOS itself. The binary links against libSystem.dylib, which is a shared library. The macos-minimal-sdk repository contains open source header files and generated symbol stubs so we can generate a stub libSystem.dylib without copying any closed source code.
58 строки
1,7 КиБ
Go
58 строки
1,7 КиБ
Go
package builder
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import (
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"path/filepath"
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"strings"
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"github.com/tinygo-org/tinygo/compileopts"
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"github.com/tinygo-org/tinygo/goenv"
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)
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// Create a job that builds a Darwin libSystem.dylib stub library. This library
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// contains all the symbols needed so that we can link against it, but it
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// doesn't contain any real symbol implementations.
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func makeDarwinLibSystemJob(config *compileopts.Config, tmpdir string) *compileJob {
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return &compileJob{
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description: "compile Darwin libSystem.dylib",
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run: func(job *compileJob) (err error) {
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arch := strings.Split(config.Triple(), "-")[0]
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job.result = filepath.Join(tmpdir, "libSystem.dylib")
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objpath := filepath.Join(tmpdir, "libSystem.o")
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inpath := filepath.Join(goenv.Get("TINYGOROOT"), "lib/macos-minimal-sdk/src", arch, "libSystem.s")
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// Compile assembly file to object file.
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flags := []string{
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"-nostdlib",
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"--target=" + config.Triple(),
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"-c",
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"-o", objpath,
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inpath,
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}
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if config.Options.PrintCommands != nil {
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config.Options.PrintCommands("clang", flags...)
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}
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err = runCCompiler(flags...)
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if err != nil {
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return err
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}
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// Link object file to dynamic library.
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platformVersion := strings.TrimPrefix(strings.Split(config.Triple(), "-")[2], "macosx")
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flags = []string{
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"-flavor", "darwinnew",
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"-demangle",
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"-dynamic",
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"-dylib",
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"-arch", arch,
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"-platform_version", "macos", platformVersion, platformVersion,
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"-install_name", "/usr/lib/libSystem.B.dylib",
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"-o", job.result,
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objpath,
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}
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if config.Options.PrintCommands != nil {
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config.Options.PrintCommands("ld.lld", flags...)
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}
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return link("ld.lld", flags...)
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},
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}
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}
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