depend_pkg (git curl wget)

直接保留依赖库的文件夹/压缩包/使用git安装依赖

Demo

这里以 CppCmakeDemo 的pkg方式为例

里面有的依赖需要 git，有的需要 wget/curl

有的需要安装后再编译，而有的不需要编译直接可用

cpp-httplib

https://github.com/LincZero/cpp-httplib fork https://github.com/yhirose/cpp-httplib

(1) 纯头文件版本

这里无需git clone，该库为纯头文件库，只要用到一个文件，下载就好。以下命令四选一：

(Linux和Windows都能使用wget或curl，但windows默认没有wget只有curl，所以一般是优先使用curl。)

• Linux
  • mkdir libs && wget -O ./libs/httplib.h https://raw.githubusercontent.com/LincZero/cpp-httplib/master/benchmark/cpp-httplib-base/httplib.h
  • mkdir libs && curl -o ./libs/httplib.h https://raw.githubusercontent.com/LincZero/cpp-httplib/master/benchmark/cpp-httplib-base/httplib.h
• Windows
  • mkdir libs; wget -O ./libs/httplib.h https://raw.githubusercontent.com/LincZero/cpp-httplib/master/benchmark/cpp-httplib-base/httplib.h
  • mkdir libs; curl -o ./libs/httplib.h https://raw.githubusercontent.com/LincZero/cpp-httplib/master/benchmark/cpp-httplib-base/httplib.h

CMakeList.txt

include_directories(${CMAKE_SOURCE_DIR}/libs)

(2) clone版本 (废弃)

这个就需要clone整个库了，他那个 FindBrotli.cmake 和 httplibConfig.cmake.in 文件在repo/cmake文件夹里

Linux

cd libs
git clone --depth 1 https://github.com/yhirose/cpp-httplib.git

CMakeList.txt

find_package(httplib CONFIG REQUIRED PATHS "${PROJECT_SOURCE_DIR}/libs/cpp-httplib/")
target_link_libraries(${PROJECT_NAME} PRIVATE httplib::httplib)

spdlog

https://github.com/gabime/spdlog

(1) Linux

cd libs
git clone --depth 1 https://github.com/gabime/spdlog.git
cd spdlog && mkdir build && cd build
cmake .. && cmake --build .

(2) Windows

cd libs
git clone --depth 1 https://github.com/gabime/spdlog.git
cd spdlog; mkdir build; cd build
cmake ..; cmake --build .

(3) 然后搜包路径改一下

# 这个是原来用vcpkg的写法
# find_package(spdlog CONFIG REQUIRED)

# 修改成直接指定搜包路径
find_package(spdlog CONFIG REQUIRED PATHS "${PROJECT_SOURCE_DIR}/libs/spdlog/build/")

# 或者添加该语句 (整体添加搜包路径)
list(APPEND CMAKE_PREFIX_PATH "${PROJECT_SOURCE_DIR}/libs/spdlog/build/")

# 或者添加该语句 (整体设置搜包路径)
set(CMAKE_PREFIX_PATH "${PROJECT_SOURCE_DIR}/libs/spdlog/build/")

spdlog - head

或者直接用头文件版本，无需编译

cd libs
git clone --depth 1 https://github.com/gabime/spdlog.git

然后直接包含就好

add_subdirectory(libs/spdlog) # 添加头文件库的 CMake 集成
include_directories(${CMAKE_SOURCE_DIR}/libs/spdlog/include/)

nlohmann/json

cd libs
git clone --depth 1 https://github.com/nlohmann/json.git
cd json && mkdir build && cd build
cmake .. && cmake --build .

可以发现include文件夹里的是 .hpp，所以可以用头文件方式使用

# 注意，用纯头文件版本时，要用后者。前者是要编译再使用的
include_directories(${CMAKE_SOURCE_DIR}/libs/json/include/)

nlohmann/json - head

或者直接用纯头文件版本，无需编译

cd libs
git clone --depth 1 https://github.com/nlohmann/json.git

然后直接包含就好

add_subdirectory(libs/json) # 添加头文件库的 CMake 集成
include_directories(${CMAKE_SOURCE_DIR}/libs/json/single_include/)

补充

头文件包含时，可选指定目标：

include_directories(${CMAKE_SOURCE_DIR}/libs/)

target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_SOURCE_DIR}/libs/)