C++获取项目路径的两种方式详解

set(MAIN_PATH ${PROJECT_SOURCE_DIR})

#define PROJECT_PATH "@MAIN_PATH@"

configure_file(src/param_deliver.h.in ../src/param_deliver.h)

#define PROJECT_PATH "/home/type/mcamera/mcamera"

export resource_path=${PWD}

char *path = getenv("resource_path");

std::string getResourcePath() {
    char *path = getenv("RESOURCE_DIR");
    if (path != nullptr) {
        LOG("find path in ENV:%s", path);
        return path;
    }
    // not find in ENV
    std::string project_path = PROJECT_PATH;
    std::string resource_path = project_path + "/test/resource/";
    LOG("find path in CMake:%s", resource_path.c_str());
    return resource_path;
}