// Populates the builder with all the packages that need to be built and
// configures each package's build settings. After this function executes,
// packages are ready to be built.
func (b *Builder) PrepBuild() error {
// Populate the full set of packages to be built.
for _, bpkg := range b.PkgMap {
if err := bpkg.resolveDeps(b.cfg, b.apiMap); err != nil {
return err
}
}
b.logDepInfo()
// Populate the base set of compiler flags. Flags from the following
// packages get applied to every source file:
// * target
// * app (if present)
// * bsp
// * compiler (not added here)
//
// In the case of conflicting flags, the higher priority package's flag
// wins. Package priorities are assigned as follows (highest priority
// first):
// * target
// * app (if present)
// * bsp
// * <library package>
// * compiler
baseCi := toolchain.NewCompilerInfo()
// Target flags.
log.Debugf("Generating build flags for target %s",
b.targetPkg.FullName())
targetCi, err := b.targetPkg.CompilerInfo(b)
if err != nil {
return err
}
baseCi.AddCompilerInfo(targetCi)
// App flags.
if b.appPkg != nil {
log.Debugf("Generating build flags for app %s", b.appPkg.FullName())
appCi, err := b.appPkg.CompilerInfo(b)
if err != nil {
return err
}
baseCi.AddCompilerInfo(appCi)
}
// Bsp flags.
log.Debugf("Generating build flags for bsp %s", b.bspPkg.FullName())
bspCi, err := b.bspPkg.CompilerInfo(b)
if err != nil {
return err
}
// Define a cpp symbol indicating the BSP architecture, name of the
// BSP and app.
archName := b.targetBuilder.bspPkg.Arch
bspCi.Cflags = append(bspCi.Cflags, "-DARCH_"+util.CIdentifier(archName))
bspCi.Cflags = append(bspCi.Cflags, "-DARCH_NAME=\""+archName+"\"")
if b.appPkg != nil {
appName := filepath.Base(b.appPkg.Name())
bspCi.Cflags = append(bspCi.Cflags, "-DAPP_"+util.CIdentifier(appName))
bspCi.Cflags = append(bspCi.Cflags, "-DAPP_NAME=\""+appName+"\"")
}
bspName := filepath.Base(b.bspPkg.Name())
bspCi.Cflags = append(bspCi.Cflags, "-DBSP_"+util.CIdentifier(bspName))
bspCi.Cflags = append(bspCi.Cflags, "-DBSP_NAME=\""+bspName+"\"")
baseCi.AddCompilerInfo(bspCi)
// All packages have access to the generated code header directory.
baseCi.Cflags = append(baseCi.Cflags,
"-I"+GeneratedIncludeDir(b.targetPkg.Name()))
// Note: Compiler flags get added at the end, after the flags for library
// package being built are calculated.
b.compilerInfo = baseCi
return nil
}
func escapeStr(s string) string {
return strings.ToUpper(util.CIdentifier(s))
}