Update GCC and libstdc++ in the Environment

This documentation guides you through the process of updating GCC (with an example using GCC 12.2). As part of this update, libstdc++.so.6 will also be updated.

Prerequisites:

1. Verify GLIBC Versions:

   strings /usr/lib/libstdc++.so.6 | grep GLIBC
   

2. Fresh Environment: To ensure a smooth process, it's recommended to start with a fresh environment.

Steps:

1. Clone the Repository:

   • Clone the Thinstation repository.

     git clone --depth 1 https://github.com/Thinstation/thinstation.git
     

   • This creates a folder named thinstation.

2. Initialize Base Environment:

   • Navigate to the cloned directory and run the setup.

     cd thinstation
     ./setup-chroot
     

3. Navigate to GCC Port:

   cd /ts/ports/core/gcc
   

4. Edit the Pkgfile:

   • Modify the Pkgfile to update the GCC and ISL version. Ensure their versions are compatible. Also, verify the download links.

     name=gcc
     version=12.2.0
     _version=7
     _islver=0.24
     release=1
     _commit=c2103c17
     checkdepends=('dejagnu' 'inetutils')
     options=('!emptydirs')
     source=(ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-${_islver}.tar.bz2 
             ftp://gcc.gnu.org/pub/gcc/releases/gcc-$_version/$_name-$_version.tar.xz)
     

5. Modify pkgmk Tool:

   vi /usr/bin/pkgmk
   

   • Comment out the line:

     #export LC_ALL=POSIX
     

6. Set the Locale:

   • This is required to prevent bsdtar failures.

     localedef -c -f UTF-8 -i en_US en_US.UTF-8
     export LC_ALL=en_US.UTF-8
     

7. Initiate Package Download:

   pkgmk -i -d
   

   • Note: If the MD5 checksum of the downloaded file doesn't match the locally stored one, reset the MD5 checksum using:

     pkgmk -um
     

8. Build the Package:

   • Start the build process. This might take a few hours.

     pkgmk -i -u
     

   • If you encounter an error:

     ERROR: Building '/ts/ports/core/gcc/gcc#12.2.0-1.pkg.tar.xz' failed.
     

   • Reset the footprint using:

     pkgmk -uf
     

9. Reattempt the Build:

   pkgmk -i -u
   

10. Compress the Build:

    • For this you need memory, 16GB seems to be minimum

    shrink gcc
    

11. Completion:

    • At the end of this process, the new GCC version is installed in the build environment. A new port file will also be generated. You can use this file, along with the Pkgfile, to set up a new build environment, saving compilation time and bypassing the steps mentioned above.