gcc 4.7.2 libbcrypt error

[kpeo]

$ gcc --version
gcc (Debian 4.7.2-4) 4.7.2

$ make library
gcc -c -Wall -O2 -fomit-frame-pointer -funroll-loops crypt_blowfish.c
gcc -c x86.S
gcc -c -shared -W1,-soname,libbcrypt.so.1 -o libbcrypt.so.1.1 crypt_blowfish.o x86.o
gcc: error: unrecognized command line option ‘-W1,-soname,libbcrypt.so.1’

I change Makefile:
CFLAGS = -Wall -O2 -fomit-frame-pointer -funroll-loops
to
CFLAGS = -Wall -fPIC -O2 -fomit-frame-pointer -funroll-loops
+
$(CC) -shared -W1,-soname,libbcrypt.so.1 -o $@ $(BLOWFISH_OBJS)
to
$(CC) -shared -Wl,-soname,libbcrypt.so.1 -o $@ $(BLOWFISH_OBJS)

and library compiles successfully.