internal/rosa/make: alternative configure script

This enables using the configure helper with non-autotools configure scripts.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/make.go

@@ -53,6 +53,8 @@ type MakeAttr struct {
 
 	// Whether to skip running the configure script.
 	SkipConfigure bool
+	// Alternative name for the configure script.
+	ConfigureName string
 	// Flags passed to the configure script.
 	Configure [][2]string
 	// Extra make targets.
@@ -102,9 +104,12 @@ func (t Toolchain) NewViaMake(
 
 	var configure string
 	if !attr.SkipConfigure {
+		configure = attr.ConfigureName
+		if configure == "" {
 			configure += `
 /usr/src/` + name + `/configure \
 	--prefix=/system`
+		}
 
 		if attr.Host != `""` {
 			configure += ` \
@@ -121,10 +126,15 @@ func (t Toolchain) NewViaMake(
 				slices.Collect(func(yield func(string) bool) {
 					for _, v := range attr.Configure {
 						s := v[0]
-						if v[1] == "" || (v[0] != "" &&
+						if v[0] != "" &&
 							v[0][0] >= 'a' &&
-							v[0][0] <= 'z') {
+							v[0][0] <= 'z' {
 							s = "--" + s
+						} else if len(v[0]) > 1 &&
+							v[0][0] == 'D' &&
+							v[0][1] >= 'a' &&
+							v[0][1] <= 'z' {
+							s = "-" + s
 						}
 						if v[1] != "" {
 							s += "=" + v[1]
@@ -152,10 +162,11 @@ func (t Toolchain) NewViaMake(
 		makeTargets = nil
 	}
 
-	finalExtra := []pkg.Artifact{
+	var finalExtra []pkg.Artifact
-		t.Load(Make),
+	if !t.isStage0() {
+		finalExtra = append(finalExtra, t.Load(Make))
 	}
-	if attr.OmitDefaults || attr.Flag&TEarly == 0 {
+	if !attr.OmitDefaults && attr.Flag&TEarly == 0 {
 		finalExtra = append(finalExtra,
 			t.Load(Gawk),
 			t.Load(Coreutils),