Install on OS X

[amitaymolko]

when trying to run "make" i get this error:

getconf: no such configuration parameter `LFS_CFLAGS'
gcc   -D_FORTIFY_SOURCE=2 -O2 -fstack-protector --param=ssp-buffer-size=4 -Wall -Wextra -std=gnu99 -pedantic -Wformat -Werror=format-security -g -c pcap.c -o pcap.o
getconf: no such configuration parameter `LFS_CFLAGS'
gcc   -D_FORTIFY_SOURCE=2 -O2 -fstack-protector --param=ssp-buffer-size=4 -Wall -Wextra -std=gnu99 -pedantic -Wformat -Werror=format-security -g -c pcapng.c -o pcapng.o
getconf: no such configuration parameter `LFS_CFLAGS'
gcc   -D_FORTIFY_SOURCE=2 -O2 -fstack-protector --param=ssp-buffer-size=4 -Wall -Wextra -std=gnu99 -pedantic -Wformat -Werror=format-security -g -Wl,--as-needed,-z,relro pcapfix.c pcap.o pcapng.o -o pcapfix
ld: unknown option: --as-needed
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [all] Error 1