Linux編譯LVGL仿真器出錯問題解決
一、錯誤現(xiàn)象
我在虛擬機下使用 LVGL 仿真器,編譯仿真器源代碼時發(fā)生報錯
cc: error: unrecognized command line option ‘-Wshift-negative-value' cc: error: unrecognized command line option ‘-Wshift-negative-value' cc: error: unrecognized command line option ‘-Wshift-negative-value' Building project file: lvgl/examples/widgets/chart/lv_example_chart_6.c Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/list/lv_example_list_1.o' failed make: *** [build/obj/lvgl/examples/widgets/list/lv_example_list_1.o] Error 1 make: *** 正在等待未完成的任務(wù).... Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/spinner/lv_example_spinner_1.o' failed make: *** [build/obj/lvgl/examples/widgets/spinner/lv_example_spinner_1.o] Error 1 Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/led/lv_example_led_1.o' failed make: *** [build/obj/lvgl/examples/widgets/led/lv_example_led_1.o] Error 1 cc: error: unrecognized command line option ‘-Wshift-negative-value' Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_3.o' failed make: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_3.o] Error 1 cc: error: unrecognized command line option ‘-Wshift-negative-value' Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_2.o' failed make: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_2.o] Error 1 cc: error: unrecognized command line option ‘-Wshift-negative-value' cc: error: unrecognized command line option ‘-Wshift-negative-value' Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_1.o' failed make: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_1.o] Error 1 Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/checkbox/lv_example_checkbox_1.o' failed make: *** [build/obj/lvgl/examples/widgets/checkbox/lv_example_checkbox_1.o] Error 1 cc: error: unrecognized command line option ‘-Wshift-negative-value' Makefile:45: recipe for target 'build/obj/lvgl/examples/widgets/chart/lv_example_chart_6.o' failed make: *** [build/obj/lvgl/examples/widgets/chart/lv_example_chart_6.o] Error 1
編譯無法進(jìn)行
二、錯誤分析
根據(jù)提示分析錯誤,其中 cc: error 提示報錯,翻到 Makefile 一看屬于 gcc 編譯器

unrecognized command line option ‘-Wshift-negative-value’ 提示無法識別指令,所以分析應(yīng)該是 GCC 版本的原因,可能我的版本不支持這個指令,解決的方式就是換版本,或者刪掉這個指令看能不能正常運行
三、錯誤解決
這里我先試試刪除指令再編譯,先用 grep 找到指令在文件的哪一行
grep -n "\-Wshift\-negative\-value" Makefile

編輯文件,刪除對應(yīng)指令
vim make file

保存后程序編譯

編譯成功,執(zhí)行 demo,可以正常執(zhí)行:

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