openwrt/package/network/utils/iproute2/patches/175-reduce-dynamic-syms.patch

--- a/tc/Makefile
+++ b/tc/Makefile
@@ -113,7 +113,7 @@ LDLIBS += -L. -lm
 
 ifeq ($(SHARED_LIBS),y)
 LDLIBS += -ldl
-LDFLAGS += -Wl,-export-dynamic
+LDFLAGS += -Wl,--dynamic-list=dynsyms.list
 endif
 
 TCLIB := tc_core.o
@@ -143,7 +143,7 @@ MODDESTDIR := $(DESTDIR)$(LIBDIR)/tc
 all: tc $(TCSO)
 
 tc: $(TCOBJ) $(LIBNETLINK) libtc.a
-	$(QUIET_LINK)$(CC) $^ $(LDFLAGS) $(LDLIBS) -o $@
+	$(QUIET_LINK)$(CC) $(filter-out dynsyms.list, $^) $(LDFLAGS) $(LDLIBS) -o $@
 
 libtc.a: $(TCLIB)
 	$(QUIET_AR)$(AR) rcs $@ $^
@@ -165,6 +165,7 @@ install: all
 clean:
 	rm -f $(TCOBJ) $(TCLIB) libtc.a tc *.so emp_ematch.tab.h; \
 	rm -f emp_ematch.tab.*
+	rm -f dynsyms.list
 
 q_atm.so: q_atm.c
 	$(QUIET_CC)$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -shared -fpic -o q_atm.so q_atm.c -latm
@@ -204,4 +205,16 @@ static-syms.h: $(wildcard *.c)
 		sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:extern char \1[] __attribute__((weak)); if (!strcmp(sym, "\1")) return \1;:;p}' $$files ; \
 	done > $@
 
+else
+
+tc: dynsyms.list
+m_xt.so: dynsyms.list
+dynsyms.list: $(wildcard *.c)
+	files="$(filter-out $(patsubst %.so,%.c,$(TCSO)), $^)" ; \
+	echo "{" > $@ ; \
+	for s in `grep -B 3 '\<dlsym' $$files | sed -n '/snprintf/{s:.*"\([^"]*\)".*:\1:;s:%s::;p}'` ; do \
+		sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:\1;:;p}' $$files ; \
+	done >> $@ ; \
+	echo "show_stats; print_nl; print_tm; parse_rtattr; parse_rtattr_flags; get_u32; matches; addattr_l; addattr_nest; addattr_nest_end; };" >> $@
+
 endif