LINUX 驱动 WARNING: "__aeabi_d2iz" [xxxxxx.ko] undefined!
编译时warning
WARNING: "__aeabi_d2iz" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_d2uiz" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_i2d" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_dsub" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_dcmpgt" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_dadd" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_dmul" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_ddiv" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_dcmplt" [/aaaaa/xxxxxx.ko] undefined!
WARNING: "__aeabi_ui2d" [/aaaaa/xxxxxx.ko] undefined!
加载驱动时报错
[ 1018.074975] xxxxxx: Unknown symbol __aeabi_ui2d (err 0)
[ 1018.082371] xxxxxx: Unknown symbol __aeabi_dcmplt (err 0)
[ 1018.090597] xxxxxx: Unknown symbol __aeabi_ddiv (err 0)
[ 1018.098196] xxxxxx: Unknown symbol __aeabi_dmul (err 0)
[ 1018.105739] xxxxxx: Unknown symbol __aeabi_dadd (err 0)
[ 1018.113120] xxxxxx: Unknown symbol __aeabi_dcmpgt (err 0)
[ 1018.120918] xxxxxx: Unknown symbol __aeabi_dsub (err 0)
[ 1018.128419] xxxxxx: Unknown symbol __aeabi_i2d (err 0)
[ 1018.135806] xxxxxx: Unknown symbol __aeabi_d2uiz (err 0)
[ 1018.143294] xxxxxx: Unknown symbol __aeabi_d2iz (err 0)
原因:编译器不支持浮点运算,把浮点改为整数即可
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