I always got an error while installing Parallels Tools on Pop!_OS 22.04 installed over Parallels version 19.0.0. When the Parallels team was contacted I was told Pop!_OS kernel is not supported and  that they did not have an ETA for resolution. So poured over the installation log and came up with the following conclusion - 
log file - 
	Code:
	Wed Sep 20 22:41:10 IST 2023
Start installation or upgrade of Guest Tools
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
  You are using:           cc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
cc: error: unrecognized command-line option '-ftrivial-auto-var-init=zero'
make[3]: *** [scripts/Makefile.build:252: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prltg.o] Error 1
make[2]: *** [Makefile:2038: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg] Error 2
make[1]: *** [Makefile:44: prl_tg] Error 2
make: *** [Makefile.kmods:48: compile] Error 2
Error: could not build kernel modules
modprobe: FATAL: Module prl_tg not found in directory /lib/modules/6.4.6-76060406-generic
modprobe: FATAL: Module prl_tg not found in directory /lib/modules/6.4.6-76060406-generic
Error: failed to install Parallels Guest Tools!
2023-09-20T22:41:11+0530: execCmd: ./install --install [167]
2023-09-20T22:41:11+0530: Error: An error occurred when installing Parallels Tools. Please go to /var/log/parallels-tools-install.log for more information.
2023-09-20T22:41:16+0530: Exiting with code 1
 Examining the gcc installations in Pop!_OS I found that both "x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0" and "gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0" were installed and symlink  "/usr/bin/gcc" pointed to "/usr/bin/gcc-11".
Changed the links to point to gcc-12 ->
	Code:
	cd /usr/bin
sudo ln -sf gcc-12 gcc
sudo ln -sf gcc-ar-12 gcc-ar
sudo ln -sf gcc-nm-12 gcc-nm
sudo ln -sf gcc-ranlib-12 gcc-ranlib
sudo rm /usr/lib/parallels-tools
sudo rm /var/lib/parallel-tools
cd /media/harkantsingh/Parallels Tools       #the mount directory of pro-tools-lin.iso
sudo ./install
 It just worked.