编译不通过，遇到这种问题成功解决，arm编译器版本设置不对。*** Target 'LD2' - Device Family 'Cortex-M4', default ARM-C...

山有木兮

编译不通过，arm编译器版本设置不对，遇到这种问题成功解决方法。

*** Target 'KEY'  - Device Family 'Cortex-M3', default ARM-Compiler version 'Unspecified: use latest compiler version 5' is not available.
*** Please review the installed ARM Compiler Versions:
   'Manage Project Items - Folders/Extensions' to manage ARM Compiler Versions.
   'Options for Target - Target' to select an ARM Compiler Version for the target.
*** Build aborted.
Build Time Elapsed:  00:00:00

改下ARM Compiler编译器的版本设置
options for target 'KEY'/Target/ARM Compiler