restrict cmake project generation to platforms declaring compiler.export_cmake

Author: facchinm

Diff for: constants/constants.go

@@ -52,6 +52,7 @@ const BUILD_PROPERTIES_COMPILER_LDFLAGS = "compiler.ldflags"
 const BUILD_PROPERTIES_COMPILER_CPP_FLAGS = "compiler.cpp.flags"
 const BUILD_PROPERTIES_COMPILER_PATH = "compiler.path"
 const BUILD_PROPERTIES_COMPILER_WARNING_FLAGS = "compiler.warning_flags"
+const BUILD_PROPERTIES_COMPILER_EXPORT_CMAKE_FLAGS = "compiler.export_cmake"
 const BUILD_PROPERTIES_EXTRA_TIME_DST = "extra.time.dst"
 const BUILD_PROPERTIES_EXTRA_TIME_LOCAL = "extra.time.local"
 const BUILD_PROPERTIES_EXTRA_TIME_UTC = "extra.time.utc"

Diff for: create_cmake_rule.go

@@ -55,7 +55,7 @@ func (s *ExportProjectCMake) Run(ctx *types.Context) error {
 	//verbose := ctx.Verbose
 	logger := ctx.GetLogger()
 
-	if s.SketchError {
+	if s.SketchError || !canExportCmakeProject(ctx) {
 		return nil
 	}
 
@@ -178,6 +178,10 @@ func (s *ExportProjectCMake) Run(ctx *types.Context) error {
 	return nil
 }
 
+func canExportCmakeProject(ctx *types.Context) bool {
+	return ctx.BuildProperties[constants.BUILD_PROPERTIES_COMPILER_EXPORT_CMAKE_FLAGS] != ""
+}
+
 func extractCompileFlags(ctx *types.Context, receipe string, defines, libs, linkerflags, linkDirectories *[]string, logger i18n.Logger) {
 	command, _ := builder_utils.PrepareCommandForRecipe(ctx.BuildProperties, receipe, true, false, false, logger)