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* 正在执行任务: /usr/bin/cmake -G=Ninja -DPYTHON_DEPS_CHECKED=1 -DESP_PLATFORM=1 -B=/home/wentao/lvgl_label/build -S=/home/wentao/lvgl_label

CMake Error: Could not create named generator =Ninja

Generators
* Unix Makefiles = Generates standard UNIX makefiles.
Green Hills MULTI = Generates Green Hills MULTI files
(experimental, work-in-progress).
Ninja = Generates build.ninja files.
Watcom WMake = Generates Watcom WMake makefiles.
CodeBlocks - Ninja = Generates CodeBlocks project files.
CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.
CodeLite - Ninja = Generates CodeLite project files.
CodeLite - Unix Makefiles = Generates CodeLite project files.
Sublime Text 2 - Ninja = Generates Sublime Text 2 project files.
Sublime Text 2 - Unix Makefiles
= Generates Sublime Text 2 project files.
Kate - Ninja = Generates Kate project files.
Kate - Unix Makefiles = Generates Kate project files.
Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files.
Eclipse CDT4 - Unix Makefiles= Generates Eclipse CDT 4.0 project files.

最近遇到了同样的问题，配置了IDF_PATH环境变量后，执行install.sh后可以了。