./build.sh error

[Allenhanbo]

After I Installed the dependencies and cloned the repository into my workspace, then I run the ./build.sh, I meet some error like this:

./build.sh
arm-none-eabi-size cf2_nrf.elf
text data bss dec hex filename
27320 452 2656 30428 76dc cf2_nrf.elf
S110 Activated
BLE Disabled
Built for platform cf2
CLEAN_VERSION
CC usddeck.o
src/deck/drivers/src/usddeck.c: In function 'f_gets_without_comments':
src/deck/drivers/src/usddeck.c:239:5: error: array subscript has type 'char' [-Werror=char-subscripts]
if (isspace(c)) {
^
cc1: all warnings being treated as errors
tools/make/targets.mk:26: recipe for target 'usddeck.o' failed
make[1]: *** [usddeck.o] Error 1
Makefile:338: recipe for target 'build' failed
make: *** [build] Error 2

[whoenig]

Your compiler for building the firmware is too old. You can find a newer compiler at https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads. (Make sure to uninstall the previous compiler version before installing the new one.)

[Allenhanbo]

Hi, thanks for replying me. Could you provide the command to uninstall the previous complier version? I searched for a while, but I didn't find a right to uninstall it.

[whoenig]

Depends on how you installed it. sudo apt-get remove gcc-arm-none-eabi or sudo apt-get remove gcc-arm-embedded on Ubuntu should do the trick.

[Allenhanbo]

Thank you so much! I've already delete the old one. I download the newest version pack from the website you provide. After I unpacked the download, I can not open the arm-none-eabi-gcc file like this:
hc@hc-Lenovo:~/gcc-arm-none-eabi-8-2019-q3-update/bin$ arm-none-eabi-gcc
arm-none-eabi-gcc: fatal error: no input files
compilation terminated.

[whoenig]

That's normal. You need to follow the readme.txt in the archive for installation instructions. Once successfully installed, ./build.sh should run successfully.

[Allenhanbo]

Thanks I've already build successfully.