1. 运行./build_oai --phy_simulators可以生成仿真的程序

2. 按照官网上的文档说明，./build_oai --ninja --phy_simulators好像快一点

3. 每次重新生成出错时，可以删除原来build出的文件夹：rm -rf ran_build

4. 参数--phy_simulators表示调用的是如下：

-P | --phy_simulators) SIMUS_PHY=1 CMAKE_CMD="$CMAKE_CMD -DENABLE_PHYSIM_TESTS=ON" # TODO: fix: dlsim_tm4 pucchsim prachsim pdcchsim pbchsim mbmssim TARGET_LIST="$TARGET_LIST dlsim ulsim ldpctest polartest smallblocktest nr_pbchsim nr_dlschsim nr_ulschsim nr_dlsim nr_ulsim nr_pucchsim nr_prachsim nr_psbchsim nr_srssim" echo_info "Will compile dlsim, ulsim, ..." shift;;

5. 默认生成的target比较多：

TARGET_LIST="$TARGET_LIST dlsim ulsim ldpctest polartest smallblocktest nr_pbchsim nr_dlschsim nr_ulschsim nr_dlsim nr_ulsim nr_pucchsim nr_prachsim nr_psbchsim nr_srssim" echo_info "Will compile dlsim, ulsim, ..."

为提升生成速度，可以只生成需要的测试对应的target，比如dlsim测试例对应的target是dlsim，可以改成：

TARGET_LIST="$TARGET_LIST dlsim" echo_info "Will compile dlsim only"

6. 出现错误：

fatal: not a git repository (or any of the parent directories): .git

fatal: not a git repository (or any of the parent directories): .git

fatal: not a git repository (or any of the parent directories): .git

好像是可以把CMakeLists.txt里注释掉： #find_package(Git)

7. 感觉build_oai脚本和CMakeLists.txt是深度绑定的，不能乱修改