xiaoxiang781216 commented on a change in pull request #1271:
URL: https://github.com/apache/incubator-nuttx/pull/1271#discussion_r442410205
##########
File path: syscall/Makefile
##########
@@ -76,27 +88,43 @@ $(BIN1): $(PROXY_OBJS)
$(BIN2): $(STUB_OBJS)
$(call ARCHIVE, $@, $(STUB_OBJS))
+$(BIN3): $(WRAP_OBJS)
+ $(call ARCHIVE, $@, $(WRAP_OBJS))
+
+$(SYSCALLIST): .context
+
.depend: Makefile $(SRCS)
- $(Q) $(MKDEP) $(PROXYDEPPATH) $(STUBDEPPATH) \
+ $(Q) $(MKDEP) $(PROXYDEPPATH) $(STUBDEPPATH) $(WRAPDEPPATH) \
"$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
$(Q) touch $@
depend: .depend
.context: syscall.csv
$(Q) $(MAKE) -C $(TOPDIR)$(DELIM)tools -f Makefile.host mksyscall
+ifeq ($(CONFIG_LIB_SYSCALL),y)
$(Q) (cd proxies; $(MKSYSCALL) -p $(CSVFILE);)
$(Q) (cd stubs; $(MKSYSCALL) -s $(CSVFILE);)
+else
+ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
+ $(Q) (cd wraps; $(MKSYSCALL) -w $(CSVFILE);)
+ $(Q) $(MKSYSCALL) -l $(CSVFILE) > $(SYSCALLLIST:.txt=.h)
+ $(Q) $(call PREPROCESS, $(SYSCALLLIST:.txt=.h), $(SYSCALLLIST))
+ $(Q) sed -i -n -e '/^[^#]/p' $(SYSCALLLIST)
Review comment:
Why we need four steps to generate the link command file?
```
$(Q) $(MKSYSCALL) -l $(CSVFILE) > $(SYSCALLLIST:.txt=.h)
$(Q) $(call PREPROCESS, $(SYSCALLLIST:.txt=.h), $(SYSCALLLIST))
$(Q) sed -i -n -e '/^[^#]/p' $(SYSCALLLIST)
cat $< | sed -e 's/^/--wrap=/' > $@
```
We can define a clever SYSCALL_LOOKUP macro to generate them in one step:
```
--wrap=xxx
--wrap=yyy
```
then we don't need add -l for mksyscall and postprocess again in arch's
Makefile.
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