iproute2: tc: reduce size of dynamic symbol table

[openwrt/staging/lynxis.git] / package / network / utils / iproute2 / patches / 175-reduce-dynamic-syms.patch

diff --git a/package/network/utils/iproute2/patches/175-reduce-dynamic-syms.patch b/package/network/utils/iproute2/patches/175-reduce-dynamic-syms.patch
new file mode 100644 (file)
index 0000000..f5c41bc
--- /dev/null
+++ b/package/network/utils/iproute2/patches/175-reduce-dynamic-syms.patch
@@ -0,0 +1,44 @@
+--- a/tc/Makefile
++++ b/tc/Makefile
+@@ -107,7 +107,7 @@ LDLIBS += -L. -lm
+ 
+ ifeq ($(SHARED_LIBS),y)
+ LDLIBS += -ldl
+-LDFLAGS += -Wl,-export-dynamic
++LDFLAGS += -Wl,--dynamic-list=dynsyms.list
+ endif
+ 
+ TCLIB := tc_core.o
+@@ -137,7 +137,7 @@ 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 $@ $^
+@@ -159,6 +159,7 @@ install: all
+ clean:
+       rm -f $(TCOBJ) $(TCLIB) libtc.a tc *.so emp_ematch.yacc.h; \
+       rm -f emp_ematch.yacc.*
++      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
+@@ -198,4 +199,15 @@ static-syms.h: $(wildcard *.c)
+               sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:extern char \1[] __attribute__((weak)); if (!strcmp(sym, "\1")) return \1;:;p}' $$files ; \
+       done > $@
+ 
++else
++
++tc: dynsyms.list
++dynsyms.list: $(wildcard *.c)
++      files="$(filter-out $(patsubst %.so,%.c,$(TCSO)), $^)" ; \
++      echo "{" > $@ ; \
++      for s in `grep -B 3 '\<dlsym' $$files | sed -n '/snprintf/{s:.*"\([^"]*\)".*:\1:;s:%s::;p}'` ; do \
++              sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:\1;:;p}' $$files ; \
++      done >> $@ ; \
++      echo "show_stats; print_tm; parse_rtattr; };" >> $@
++
+ endif