目录
前言
本次笔记主要记录博主移植lvgl到linux上的过程，方便调试。
两种编译方式：
- 移植官方推荐的lvgl，基于linux SDL2，makefile编译方式。
- 另外还会分别移植lvgl v8.0 和 lvgl v8.3两个版本。都是基于SDL2多媒体框架和CMAKE编译。
- lvgl v8.3版本后面有时间再整理出来。
原文：李柱明博客
参考：
linux安装SDL2
sudo apt-get update && sudo apt-get install -y build-essential libsdl2-dev 官方推荐方式
参考：
- Simulator project for LVGL embedded GUI Library：https://github.com/lvgl/lv_port_pc_vscode
拉取lvgl PC 模拟子模块vscode sdl：
git clone --recursive https://github.com/lvgl/lv_sim_vscode_sdl 下载完如下图：
然后直接make：
make 转到lv_sim_vscode_sdl/build/bin执行demo固件即可：
./demo 结果如图：
如果上述clone下面这三个库时较慢，可以手动下载库文件，再复制到lv_sim_vscode_sdl目录下对应的目录中：（选同一版本）
-
lvgl库下载 ：https://github.com/lvgl/lvgl.git
-
lvgl_drivers库下载 ：https://github.com/lvgl/lv_drivers.git
-
lv_examples库下载 ：https://github.com/lvgl/lv_examples.git
CMake方式移植lvgl v8.0
打算搭建自己学习、调试lvgl的SDK，用CMAKE编译，所以就自己手把手构建SDK和移植lvgl。
目录框架
目录构建如下：
- app：专门存放学习、调试的UI app程序。
- build：用于编译。
- lib：第三方库。
- src：主要起始文件，如main.c。
- ui：lvgl源码、lvgl驱动等UI库文件。
- CMakeLists.txt：cmake编译顶层文件。
拉取lvgl
进入ui文件夹，clone两个库：
git clone -b release/v8.0 https://github.com/lvgl/lvgl.git git clone -b release/v8.0 https://github.com/lvgl/lv_drivers.git
添加lv_conf.h和lv_drv_conf.h配置文件
lv_conf.h
添加lv_conf.h：在lvgl目录下
cp lv_conf_template.h lv_conf.h 使能该文件：改成1
#if 1 /*Set it to "1" to enable content*/ lv_drv_conf.h
- 添加lv_drv_conf.h：在lvgl目录下
cp lv_drv_conf_template.h lv_drv_conf.h - 使能该文件：改成1
#if 1 /*Set it to "1" to enable content*/ -
开启SDL需要的宏：
- 把
USE_MONITOR宏改成1。我们用monitor来模拟。 USE_MOUSE改成1。用到鼠标。USE_MOUSEWHEEL改成1。鼠标滚轮也用到。USE_KEYBOARD改成1。用到键盘。
- 把
构建main.c
-
可以直接拷贝
lv_sim_vscode_sdl/main/src/m*。- 我把该目录下的两个文件都cp过来了。
-
main.c把头文件改成如下：
/********************* * INCLUDES *********************/ #define _DEFAULT_SOURCE /* needed for usleep() */ #include <stdlib.h> #include <unistd.h> #define SDL_MAIN_HANDLED /*To fix SDL's "undefined reference to WinMain" issue*/ #include <SDL2/SDL.h> #include "lvgl.h" #include "examples/lv_examples.h" #include "monitor.h" #include "mouse.h" #include "keyboard.h" #include "mousewheel.h" main.c把lv_demo_widgets();demo注释掉。mouse_cursor_icon.c的头文件改成：
#include "lvgl.h" 构建自己的CMAKE
lvgl 8.0版本我打算全盘使用自己构建的cmake。
lvgl 8.3版本我打算兼容原生库的构建的cmake。
顶层目录下的cmake：
cmake_minimum_required(VERSION 3.0.0) set(target lzm_lvgl_test_bin) project(${target} VERSION 0.1.0) set(src_lvgl_test src/main.c src/mouse_cursor_icon.c ) add_executable(${target} ${src_lvgl_test}) include_directories(/usr/include) target_link_libraries(${target} PRIVATE lzm_lvgl_lib lzm_lvgl_drv_lib) target_link_libraries(${target} PRIVATE SDL2) add_subdirectory(ui) ./ui：
target_compile_definitions(${target} PUBLIC "-DLV_CONF_INCLUDE_SIMPLE") target_compile_definitions(${target} PUBLIC "-DLV_LVGL_H_INCLUDE_SIMPLE") add_subdirectory(lvgl) add_subdirectory(lv_drivers) ./ui/lvgl：
set(target lzm_lvgl_lib) add_library(${target} STATIC) target_compile_definitions(${target} PUBLIC "-DLV_CONF_INCLUDE_SIMPLE") target_compile_definitions(${target} PUBLIC "-DLV_LVGL_H_INCLUDE_SIMPLE") target_include_directories(${target} PUBLIC ./) target_include_directories(${target} PUBLIC ./src) target_include_directories(${target} PUBLIC ./src/core) target_include_directories(${target} PUBLIC ./src/draw) target_include_directories(${target} PUBLIC ./src/extra) target_include_directories(${target} PUBLIC ./src/font) target_include_directories(${target} PUBLIC ./src/gpu) target_include_directories(${target} PUBLIC ./src/hal) target_include_directories(${target} PUBLIC ./src/misc) target_include_directories(${target} PUBLIC ./src/widgets) # app include target_include_directories(${target} PUBLIC ./examples) # app src file(GLOB_RECURSE src_lvgl_app examples/*.c) file(GLOB_RECURSE src_lvgl src/*.c) target_sources(${target} PRIVATE ${src_lvgl} ${src_lvgl_app} ) ./ui/lv_drivers：
set(target lzm_lvgl_drv_lib) add_library(${target} STATIC) target_link_libraries(${target} PUBLIC lzm_lvgl_lib) target_include_directories(${target} PUBLIC ./) target_include_directories(${target} PUBLIC ./display) target_include_directories(${target} PUBLIC ./gtkdrv) target_include_directories(${target} PUBLIC ./indev) target_include_directories(${target} PUBLIC ./wayland) target_include_directories(${target} PUBLIC ./win32drv) file(GLOB_RECURSE src_lvgl_drv ./*.c) target_sources(${target} PRIVATE ${src_lvgl_drv} ) 编译
- 在./build路径下进行
cmake ..：结果如下，Makefile创建成功：
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ cmake .. -- The C compiler identification is GNU 9.4.0 -- The CXX compiler identification is GNU 9.4.0 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: /usr/bin/cc - skipped -- Detecting C compile features -- Detecting C compile features - done -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Configuring done -- Generating done -- Build files have been written to: /home/jamie/work/study/lvgl/lzm_lvgl_v8.0/build jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ ls CMakeCache.txt CMakeFiles cmake_install.cmake Makefile ui - 然后直接make，遇错就改：
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ make [ 90%] Built target lzm_lvgl_lib Consolidate compiler generated dependencies of target lzm_lvgl_drv_lib [ 98%] Built target lzm_lvgl_drv_lib Consolidate compiler generated dependencies of target lzm_lvgl_test_bin [ 98%] Building C object CMakeFiles/lzm_lvgl_test_bin.dir/src/mouse_cursor_icon.c.o [ 99%] Linking C executable lzm_lvgl_test_bin [100%] Built target lzm_lvgl_test_bin jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ - 执行：
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ ./lzm_lvgl_test_bin 
