diff --git a/legacy/builder/builder.go b/legacy/builder/builder.go
index 13880efcc9f..1a94647f696 100644
--- a/legacy/builder/builder.go
+++ b/legacy/builder/builder.go
@@ -55,7 +55,7 @@ func (s *Builder) Run(ctx *types.Context) error {
 		logIfVerbose(false, tr("Detecting libraries used...")),
 		findIncludes(ctx),
 
-		&WarnAboutArchIncompatibleLibraries{},
+		warnAboutArchIncompatibleLibraries(ctx),
 
 		logIfVerbose(false, tr("Generating function prototypes...")),
 		types.BareCommand(PreprocessSketch),
@@ -317,7 +317,7 @@ func (s *Preprocess) Run(ctx *types.Context) error {
 
 		findIncludes(ctx),
 
-		&WarnAboutArchIncompatibleLibraries{},
+		warnAboutArchIncompatibleLibraries(ctx),
 
 		types.BareCommand(PreprocessSketch),
 	}
@@ -424,3 +424,16 @@ func containerBuildOptions(ctx *types.Context) types.BareCommand {
 		return nil
 	})
 }
+
+func warnAboutArchIncompatibleLibraries(ctx *types.Context) types.BareCommand {
+	return types.BareCommand(func(ctx *types.Context) error {
+		overrides, _ := ctx.BuildProperties.GetOk("architecture.override_check")
+		infoBuf, _ := WarnAboutArchIncompatibleLibraries(
+			ctx.TargetPlatform,
+			overrides,
+			ctx.SketchLibrariesDetector.ImportedLibraries(),
+		)
+		ctx.Info(string(infoBuf))
+		return nil
+	})
+}
diff --git a/legacy/builder/warn_about_arch_incompatible_libraries.go b/legacy/builder/warn_about_arch_incompatible_libraries.go
index c815a54f3aa..1f52c04d0e4 100644
--- a/legacy/builder/warn_about_arch_incompatible_libraries.go
+++ b/legacy/builder/warn_about_arch_incompatible_libraries.go
@@ -16,26 +16,28 @@
 package builder
 
 import (
+	"bytes"
 	"strings"
 
-	"github.com/arduino/arduino-cli/legacy/builder/constants"
-	"github.com/arduino/arduino-cli/legacy/builder/types"
+	"github.com/arduino/arduino-cli/arduino/cores"
+	"github.com/arduino/arduino-cli/arduino/libraries"
 )
 
-type WarnAboutArchIncompatibleLibraries struct{}
-
-func (s *WarnAboutArchIncompatibleLibraries) Run(ctx *types.Context) error {
-	targetPlatform := ctx.TargetPlatform
-	buildProperties := ctx.BuildProperties
+func WarnAboutArchIncompatibleLibraries(
+	targetPlatform *cores.PlatformRelease,
+	overrides string,
+	importedLibraries libraries.List,
+) ([]byte, error) {
+	infoBuf := &bytes.Buffer{}
 
 	archs := []string{targetPlatform.Platform.Architecture}
-	if overrides, ok := buildProperties.GetOk(constants.BUILD_PROPERTIES_ARCH_OVERRIDE_CHECK); ok {
+	if overrides != "" {
 		archs = append(archs, strings.Split(overrides, ",")...)
 	}
 
-	for _, importedLibrary := range ctx.SketchLibrariesDetector.ImportedLibraries() {
+	for _, importedLibrary := range importedLibraries {
 		if !importedLibrary.SupportsAnyArchitectureIn(archs...) {
-			ctx.Info(
+			infoBuf.WriteString(
 				tr("WARNING: library %[1]s claims to run on %[2]s architecture(s) and may be incompatible with your current board which runs on %[3]s architecture(s).",
 					importedLibrary.Name,
 					strings.Join(importedLibrary.Architectures, ", "),
@@ -43,5 +45,5 @@ func (s *WarnAboutArchIncompatibleLibraries) Run(ctx *types.Context) error {
 		}
 	}
 
-	return nil
+	return infoBuf.Bytes(), nil
 }