// license that can be found in the LICENSE file.

// Copied from Go distribution src/go/build/build.go, syslist.go.
// That package does not export the ability to process raw file data,
// although we could fake it with an appropriate build.Context
// and a lot of unwrapping.
// More importantly, that package does not implement the tags["*"]
// special case, in which both tag and !tag are considered to be true
// for essentially all tags (except "ignore").

in any package in the program are concatenated and used at link time. All the
pkg-config directives are concatenated and sent to pkg-config simultaneously
to add to each appropriate set of command-line flags.

When the cgo directives are parsed, any occurrence of the string ${SRCDIR}
will be replaced by the absolute path to the directory containing the source

			if !maybeInModule(path, mp) {
				continue
			}
			if mv == "" {
				// The only replacement is a wildcard that doesn't specify a version, so
				// synthesize a pseudo-version with an appropriate major version and a
				// timestamp below any real timestamp. That way, if the main module is
				// used from within some other module, the user will be able to upgrade
				// the requirement to any real version they choose.

}

// goCmd returns a Cmd that executes "go $subcommand $args" with appropriate
// additional flags and environment.
func (c *config) goCmd(subcommand string, args ...string) *exec.Cmd {
	return c.goCmdWithExperiments(subcommand, args, nil)
}

// goCmdWithExperiments returns a Cmd that executes
// "GOEXPERIMENT=$experiments go $subcommand $args" with appropriate
// additional flags and CGO-related environment variables.

	// we see them again in the second batch. On the other hand, it's way simpler
	// to implement, and not really any more expensive if the user is requesting
	// no explicit arguments (their go.mod file should already list an appropriate
	// toolchain version) or only one module (as is used by the Go Module Proxy).

	if infosErr != nil {
		var sw toolchain.Switcher
		sw.Error(infosErr)
		if sw.NeedSwitch() {
			sw.Switch(ctx)
		}

		}
		if size&1 != 0 {
			w.WriteByte(0)
		}
	}

	if err := w.Flush(); err != nil {
		return err
	}
	return dst.Close()
}

// setextld sets the appropriate linker flags for the specified compiler.
func setextld(ldflags []string, compiler []string) ([]string, error) {
	for _, f := range ldflags {
		if f == "-extld" || strings.HasPrefix(f, "-extld=") {

// t is the successor corresponding to the value of the ConstBool arg.
//
// Rewrite this into
//
//	p   other pred(s)
//	|  /
//	| b
//	|/ \
//	t   u
//
// and remove the appropriate phi arg(s).
//
// (2) Look for a CFG of the form
//
//	p   q
//	 \ /
//	  b
//	 / \
//	t   u
//
// in which b is as described in (1).
// However, b may also contain other phi values.

		}
		// Once we resolve the query to a particular commit, we will need to
		// also identify the most appropriate version to assign to that commit.
		// (It may correspond to more than one valid version.)
		//
		// The most appropriate version depends on the tags associated with
		// both the commit itself (if the commit is a tagged version)

			}
			pad := blockPadding(int64(len(spb)))
			spb = append(spb, zeroBlock[:pad]...)
			hdr.Size += int64(len(spb)) // Accounts for encoded sparse map

			// Add and modify appropriate PAX records.
			dir, file := path.Split(realName)
			hdr.Name = path.Join(dir, "GNUSparseFile.0", file)
			paxHdrs[paxGNUSparseMajor] = "1"
			paxHdrs[paxGNUSparseMinor] = "0"
			paxHdrs[paxGNUSparseName] = realName

// field. It transforms the op of node n to ODOTINTER or ODOTMETH, if appropriate.
// It also may add a StarExpr node to n.X as needed for access to non-pointer
// methods. If dostrcmp is 0, it matches the field/method with the exact symbol
// as n.Sel (appropriate for exported fields). If dostrcmp is 1, it matches by name
// exactly. If dostrcmp is 2, it matches names with case folding.