$(CXX) -Wall -W libopen.c -O2 -nostartfiles -shared -fPIC -Wl,-soname,libopen.so.0 -o libopen.so.0.0 -ldl
all: libopen.so.0.0
$(CXX) -Wall -W libopen.c -O2 -nostartfiles -shared -fPIC -Wl,-soname,libopen.so.0 -o libopen.so.0.0 -ldl
all: libopen.so.0.0