[TO_BE_DISCUSSED] Force recompile of whole library if it is being modified

By ignoring cache files, we can force all the files in a library to be recompiled. This ensures that "all" warnings (introduced in previous commit) are being displayed every time.
Cons: recompile time will increase a lot while developing bigger libraries

Author: facchinm

builder_utils/utils.go

@@ -248,6 +248,13 @@ func ObjFileIsUpToDate(ctx *types.Context, sourceFile, objectFile, dependencyFil
 	logger := ctx.GetLogger()
 	debugLevel := ctx.DebugLevel
 
+	if ctx.IgnoreDependencyCache {
+		if debugLevel >= 20 {
+			logger.Fprintln(os.Stdout, constants.LOG_LEVEL_DEBUG, "Skipping dependency detection on {0}", sourceFile)
+		}
+		return false, nil
+	}
+
 	if debugLevel >= 20 {
 		logger.Fprintln(os.Stdout, constants.LOG_LEVEL_DEBUG, "Checking previous results for {0} (result = {1}, dep = {2})", sourceFile, objectFile, dependencyFile)
 	}

phases/libraries_builder.go

@@ -102,10 +102,12 @@ func compileLibraries(ctx *types.Context, libraries []*types.Library, buildPath
 
 	for _, library := range libraries {
 		if library.IsBeingModified {
+			ctx.IgnoreDependencyCache = true
 			ctx.WarningsLevel = "all"
 		}
 		libraryObjectFiles, err := compileLibrary(ctx, library, buildPath, buildProperties, includes)
 		if library.IsBeingModified {
+			ctx.IgnoreDependencyCache = false
 			ctx.WarningsLevel = warningLevelToBeRestored
 		}
 		if err != nil {

types/context.go

@@ -101,6 +101,9 @@ type Context struct {
 	// Reuse old tools since the backing storage didn't change
 	CanUseCachedTools bool
 
+	// Ignore dependency .d files while compiling
+	IgnoreDependencyCache bool
+
 	// Experimental: use arduino-preprocessor to create prototypes
 	UseArduinoPreprocessor bool
 }