support static-only systems

[lisovros/iproute2_canprio.git] / ip / Makefile

diff --git a/ip/Makefile b/ip/Makefile
index 3c185cfbb4c84e1a6c6b0b7eef66e151035abc77..51914e85aa451c138ab891e5d46c680e12afc768 100644 (file)
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -23,6 +23,20 @@ install: all
 clean:
        rm -f $(ALLOBJ) $(TARGETS)
 
-LDLIBS += -ldl
+SHARED_LIBS ?= y
+ifeq ($(SHARED_LIBS),y)
 
+LDLIBS += -ldl
 LDFLAGS += -Wl,-export-dynamic
+
+else
+
+ip: static-syms.o
+static-syms.o: static-syms.h
+static-syms.h: $(wildcard *.c)
+       files="$^" ; \
+       for s in `grep -B 3 '\<dlsym' $$files | sed -n '/snprintf/{s:.*"\([^"]*\)".*:\1:;s:%s::;p}'` ; do \
+               sed -n '/'$$s'[^ ]* =/{s:.* \([^ ]*'$$s'[^ ]*\) .*:extern char \1[] __attribute__((weak)); if (!strcmp(sym, "\1")) return \1;:;p}' $$files ; \
+       done > $@
+
+endif