osx 10.9 static linking problems with -g

gistfile1.txt

Creating shared library librdkafka.so.1
gcc -g -shared -dynamiclib -Wl,-install_name,/usr/local/lib/librdkafka.so.1 rdkafka.o rdkafka_broker.o rdkafka_msg.o rdkafka_topic.o rdkafka_defaultconf.o rdkafka_timer.o rdkafka_offset.o rdcrc32.o rdgz.o rdaddr.o rdrand.o rdthread.o rdqueue.o rdlog.o snappy.o -o librdkafka.so.1 -lpthread -lz

Creating static library librdkafka.a
ar rcs librdkafka.a rdkafka.o rdkafka_broker.o rdkafka_msg.o rdkafka_topic.o rdkafka_defaultconf.o rdkafka_timer.o rdkafka_offset.o rdcrc32.o rdgz.o rdaddr.o rdrand.o rdthread.o rdqueue.o rdlog.o snappy.o

$ ranlib librdkafka.a
$

..

Linking librdkafka statically with -g fails:

gcc -g -O2 -fPIC -Wall -Werror -Wfloat-equal -Wpointer-arith -I../src rdkafka_example.c -o rdkafka_example -g \
		../src/librdkafka.a -lpthread -lz
Assertion failed: (!"Unknown operand"), function LinkLocation, file /SourceCache/dwarf_utilities/dwarf_utilities-114/source/DWARFdSYM.cpp, line 1704.
clang: error: unable to execute command: Abort trap: 6
clang: error: dsymutil command failed due to signal (use -v to see invocation)
make[1]: *** [rdkafka_example] Error 254


Works without -g:
$ gcc -O2 -fPIC -Wall -Werror -Wfloat-equal -Wpointer-arith -I../src rdkafka_example.c -o rdkafka_example ../src/librdkafka.a -lpthread -lz



Why?