Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision bd92e6d58d98c6e39be91bc9e1d2d04be71b5c04)
+++ uspace/Makefile.common	(revision 7f881cd8e3ac707b5ae404c782b53844495e1a1e)
@@ -272,5 +272,11 @@
 #
 
-JOBFILE = $(LIBC_PREFIX)/../../../tools/jobfile.py
+ifeq ($(PRECHECK),y)
+	JOBFILE = $(LIBC_PREFIX)/../../../tools/jobfile.py
+	# XXX: Do not change the order of arguments.
+	CC_JOB = $(JOBFILE) $(JOB) $(CC) $< -o $@
+else
+	CC_JOB = $(CC) $< -o $@
+endif
 
 ifeq ($(COMPILER),clang)
@@ -336,44 +342,23 @@
 
 %.o: %.S | depend
-	$(CC) -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__ -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ as asm/preproc $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) -D__ASM__
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__
 
 %.o: %.s | depend
-	$(CC) -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__ -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ as asm
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__
 
 %.o: %.c | depend
-	$(CC) -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ cc core $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS)
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS)
 
 %.test.o: %.c | depend
-	$(CC) -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(TEST_CFLAGS) -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ cc core $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(TEST_CFLAGS)
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(CFLAGS) $(EXTRA_CFLAGS) $(TEST_CFLAGS)
 
 %.lo: %.S | depend
-	$(CC) -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__ -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ as asm/preproc $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) -D__ASM__
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__
 
 %.lo: %.s | depend
-	$(CC) -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__ -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ as asm
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) $(AS_CFLAGS) -D__ASM__
 
 %.lo: %.c | depend
-	$(CC) -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS) -c $< -o $@
-ifeq ($(PRECHECK),y)
-	$(JOBFILE) $(JOB) $< $@ cc core $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS)
-endif
+	$(CC_JOB) -c -MD $(DEFS) $(LIB_CFLAGS) $(EXTRA_CFLAGS)
 
 depend: $(PRE_DEPEND)