Method expandVariables

buildsystems/buildconfig.go:885–902

expandVariables expands placeholder variables in the given string and returns the result. Placeholders like ${CC}, ${CXX}, ${SYSROOT}, etc. are replaced with actual values.

(content string)

// expandVariables expands placeholder variables in the given string and returns the result.
// Placeholders like ${CC}, ${CXX}, ${SYSROOT}, etc. are replaced with actual values.
func (b BuildConfig) expandVariables(content string) string {
	toolchain := b.Ctx.Platform().GetToolchain()
	rootfs := b.Ctx.Platform().GetRootFS()

	// Replace ${CC}, ${CXX}, ${HOST_CC} for compiler paths.
	// For Clang with sysroot, add --gcc-toolchain to find GCC runtime files.
	ccValue := toolchain.GetCC()
	cxxValue := toolchain.GetCXX()
	if !b.DevDep && rootfs != nil && toolchain.GetName() == "clang" {
		ccValue += " --gcc-toolchain=/usr"
		cxxValue += " --gcc-toolchain=/usr"
	}
	content = strings.ReplaceAll(content, "${CC}", ccValue)
	content = strings.ReplaceAll(content, "${CXX}", cxxValue)

	content = b.ExprVars.Expand(content)
	return content
}

// IsPythonPackage returns true if the build config references Python placeholders
// in its custom commands, indicating it's a Python package that should be installed