Show load cycles when running mk2rbc
Previously, if there was a cycle of load statements,
mk2rbc would exit with status code 1 but not give
any message indicating what went wrong.
Bug: 226974242
Test: Manually
Change-Id: I7d30cad08bd3abcd761b5f28a63a2cc66b45e805
diff --git a/mk2rbc/cmd/mk2rbc.go b/mk2rbc/cmd/mk2rbc.go
index e84eacd..cc83430 100644
--- a/mk2rbc/cmd/mk2rbc.go
+++ b/mk2rbc/cmd/mk2rbc.go
@@ -173,7 +173,7 @@
}
ok := true
for _, mkFile := range files {
- ok = convertOne(mkFile) && ok
+ ok = convertOne(mkFile, []string{}) && ok
}
if *launcher != "" {
@@ -183,7 +183,7 @@
if *inputVariables == "" {
quit(fmt.Errorf("the product launcher requires an input variables file"))
}
- if !convertOne(*inputVariables) {
+ if !convertOne(*inputVariables, []string{}) {
quit(fmt.Errorf("the product launcher input variables file failed to convert"))
}
@@ -201,7 +201,7 @@
if *inputVariables == "" {
quit(fmt.Errorf("the board launcher requires an input variables file"))
}
- if !convertOne(*inputVariables) {
+ if !convertOne(*inputVariables, []string{}) {
quit(fmt.Errorf("the board launcher input variables file failed to convert"))
}
err := writeGenerated(*boardlauncher, mk2rbc.BoardLauncher(
@@ -310,9 +310,13 @@
// the output hierarchy, or to the stdout.
// Optionally, recursively convert the files this one includes by
// $(call inherit-product) or an include statement.
-func convertOne(mkFile string) (ok bool) {
+func convertOne(mkFile string, loadStack []string) (ok bool) {
if v, ok := converted[mkFile]; ok {
- return v != nil
+ if v == nil {
+ fmt.Fprintf(os.Stderr, "Cycle in load graph:\n%s\n%s\n\n", strings.Join(loadStack, "\n"), mkFile)
+ return false
+ }
+ return true
}
converted[mkFile] = nil
defer func() {
@@ -356,6 +360,7 @@
return false
}
}
+ loadStack = append(loadStack, mkFile)
ok = true
if *recurse {
for _, sub := range ss.SubConfigFiles() {
@@ -363,7 +368,7 @@
if _, err := os.Stat(sub); os.IsNotExist(err) {
continue
}
- ok = convertOne(sub) && ok
+ ok = convertOne(sub, loadStack) && ok
}
}
converted[mkFile] = ss