make -j4 issue with gcc-10 and gcc-9 installed (Ubuntu 20.2.0)

[Maverick-Shark]

Hi,
With Ubuntu 20.2.0 if I have two versions of gcc (gcc-9 and gcc-10), "make -j4" doesn't work. It always shows the following message:

"Please use GCC Version 10

You are using:
gcc version 9.2.1 20191025 (release) [ARM/arm-9-branch revision 277599] (15:9-2019-q4-0ubuntu1)

GCC-10 Installed and configured as default:

$ sudo update-alternatives --config gcc

There are 2 choices for the alternative gcc (providing /usr/bin/gcc).

Selection Path Priority Status
0 /usr/bin/gcc-10 100 auto mode
1 /usr/bin/gcc-10 100 manual mode
2 /usr/bin/gcc-9 90 manual mode

And GCC version:

$ gcc --version
gcc (Ubuntu 10.2.0-5ubuntu1~20.04) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Thanks and Best regards,
Shark

[nezza]

What's the version of your arm gcc?

arm-none-eabi-gcc --version

Thanks and cheers,
Thomas

[kbeckmann]

Ubuntu doesn't package arm-none-eabi-gcc 10 yet afaik, so I recommend downloading arm-gcc-none-eabi 10 from over here https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads . gcc is for building Linux binaries, we need to build for bare metal.

You can then extract is somewhere and set the environment variable GCC_PATH to the bin directory, e.g. /opt/gcc-arm-none-eabi-10-2020-q4-major/bin.

[Maverick-Shark]

Hi,
You're right I had arm-none-eabi-gcc 9.2.1 version. Downloading and configuring new version now it works!!!

Thanks a lot for your help,
Shark

[kbeckmann]

Great!