+ --disable-coverage --enable-languages="$(STAGE1_LANGUAGES)" \
+ --disable-build-format-warnings
+
+# When using the slow stage1 compiler disable IL verification and forcefully
+# enable it when using the stage2 compiler instead. As we later compare
+# stage2 and stage3 we are merely avoid doing redundant work, plus we apply
+# checking when building all target libraries for release builds.
+STAGE1_TFLAGS += -fno-checking
+STAGE2_CFLAGS += -fno-checking
+STAGE2_TFLAGS += -fno-checking
+STAGE3_CFLAGS += -fchecking=1
+STAGE3_TFLAGS += -fchecking=1