编译内核错误:Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at kernel/timeconst.pl line 373
最近在编译一个新的rk sdk的时候,编译内核报错
CHK include/linux/version.h CHK include/generated/utsrelease.h make[1]: 'include/generated/mach-types.h' is up to date. CALL scripts/checksyscalls.sh CHK include/generated/compile.h TIMEC kernel/timeconst.h Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at kernel/timeconst.pl line 373. /home/liuxueneng/workCode/rk3066/kernel/kernel/Makefile:141: recipe for target 'kernel/timeconst.h' failed make[1]: *** [kernel/timeconst.h] Error 255 Makefile:973: recipe for target 'kernel' failed make: *** [kernel] Error 2
显示错误
Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at kernel/timeconst.pl line 373
已经提示纤细的错误信息在哪里了,打开timeconst.ps看一下
372 @val = @{$canned_values{$hz}}; 373 if (!defined(@val)) { 374 @val = compute_values($hz); 375 } 376 output($hz, @val);
改成如下就可以编译了
372 @val = @{$canned_values{$hz}}; 373 if (!@val) { 374 @val = compute_values($hz); 375 } 376 output($hz, @val);
参考http://blog.5ibc.net/p/48570.html
查了一下更新,发现其中有一项是perl版本升级到了 v5.22.1,然后查了perl官方文档,发现官网因为一个bug,该版本将defined(@array)去掉了。可以直接使用数组判断非空。
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