Override symbols with LD_PRELOAD

Override syslog implementation

void syslog(int priority, const char *format, ...) { }

Compile

gcc -fPIC -shared -ldl -o noop-syslog.so noop-syslog.c
LD_PRELOAD=noop-syslog.so

Make without Makefile

CFLAGS=-Itlpi-dist/lib LDFLAGS="-Ltlpi-dist" LDLIBS="-l:libtlpi.a" make hello-world