arm-none-eabi-g++: error: unrecognized command line option '--wrap=main'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=_malloc_r'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=_free_r'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=_realloc_r'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=_calloc_r'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=exit'
arm-none-eabi-g++: error: unrecognized command line option '--wrap=atexit'

I used the mbed CLI to export to a GNU ARM Eclipse (managed CDT) project. The created project compiles OK, but the link fails: <<code>> arm-none-eabi-g++: error: unrecognized command line option '--wrap=main' arm-none-eabi-g++: error: unrecognized command line option '--wrap=_malloc_r' arm-none-eabi-g++: error: unrecognized command line option '--wrap=_free_r' arm-none-eabi-g++: error: unrecognized command line option '--wrap=_realloc_r' arm-none-eabi-g++: error: unrecognized command line option '--wrap=_calloc_r' arm-none-eabi-g++: error: unrecognized command line option '--wrap=exit' arm-none-eabi-g++: error: unrecognized command line option '--wrap=atexit' <</code>> The Linker options are wrong: {{/media/uploads/awneil/2017-06-23_1e86oHW.png}} The 'wrap' options need the -Wl prefix to be passed-through to the Linker https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Link-Options.html If I export to an Eclipse_gcc_arm (makefile) project from the online compiler, it gets this correct.

So I tried the Eclipse makefile Export - and that doesn't work properly either! https://developer.mbed.org/forum/bugs-suggestions/topic/27892/

Hi Andrew, I responded to your issue on github https://github.com/ARMmbed/mbed-os/issues/4624

Thanks - I was just about to make the reference!