目錄

• 一、錯誤現(xiàn)象
• 二、錯誤分析
• 三、錯誤解決

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.cMakefile:45: recipe for target "build/obj/lvgl/examples/widgets/list/lv_example_list_1.o" failedmake: *** [build/obj/lvgl/examples/widgets/list/lv_example_list_1.o] Error 1make: *** 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" failedmake: *** [build/obj/lvgl/examples/widgets/spinner/lv_example_spinner_1.o] Error 1Makefile:45: recipe for target "build/obj/lvgl/examples/widgets/led/lv_example_led_1.o" failedmake: *** [build/obj/lvgl/examples/widgets/led/lv_example_led_1.o] Error 1cc: error: unrecognized command line option ‘-Wshift-negative-value"Makefile:45: recipe for target "build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_3.o" failedmake: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_3.o] Error 1cc: error: unrecognized command line option ‘-Wshift-negative-value"Makefile:45: recipe for target "build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_2.o" failedmake: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_2.o] Error 1cc: 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" failedmake: *** [build/obj/lvgl/examples/widgets/textarea/lv_example_textarea_1.o] Error 1Makefile:45: recipe for target "build/obj/lvgl/examples/widgets/checkbox/lv_example_checkbox_1.o" failedmake: *** [build/obj/lvgl/examples/widgets/checkbox/lv_example_checkbox_1.o] Error 1cc: error: unrecognized command line option ‘-Wshift-negative-value"Makefile:45: recipe for target "build/obj/lvgl/examples/widgets/chart/lv_example_chart_6.o" failedmake: *** [build/obj/lvgl/examples/widgets/chart/lv_example_chart_6.o] Error 1

編譯無法進行

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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