cmake_minimum_required(VERSION 3.8)

project(Foo CXX)

file(WRITE test.cpp "int main() {}")

add_executable(foo test.cpp)

file(WRITE mylib.cpp "")

add_library(mylib SHARED mylib.cpp)

target_link_libraries(foo PRIVATE mylib)

set_target_properties(foo PROPERTIES BUILD_RPATH "./")