Is there any update on this? I tried to install Parallels Tools onto a Fedora 23 guest (with the latest Fedora updates) today without success.
I followed the instructions on the web page. I'm attaching the output of the installer below. Looks like this is some issue with the GPL and kernel modules.
I am using Parallels Version 11.2.0 (32581).
-----> snip <-----
016-05-31T16:49:31+0200:
Parallels Tools 11.2.0-32581 Installer started.
2016-05-31T16:49:31+0200: Failed to setup console printk level.
2016-05-31T16:49:37+0200: execCmd: ./installer/pm.sh --check gtools [0]
Started installation of Parallels Guest Tools version '11.2.0.32581'
Tue May 31 16:49:37 CEST 2016
Start installation or upgrade of Guest Tools
new version of parallels tools
Installed Guest Tools were not found
Perform installation into the /usr/lib/parallels-tools directory
cat: /usr/lib/parallels-tools/kmods/../version: No such file or directory
Start installation of prl_eth kernel module
make: Entering directory '/usr/lib/parallels-tools/kmods'
cd prl_eth/pvmnet && make
make[1]: Entering directory '/usr/lib/parallels-tools/kmods/prl_eth/pvmnet'
make -C /lib/modules/4.4.9-300.fc23.x86_64+debug/build M=/usr/lib/parallels-tools/kmods/prl_eth/pvmnet
make[2]: Entering directory '/usr/src/kernels/4.4.9-300.fc23.x86_64+debug'
LD /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/built-in.o
CC [M] /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/pvmnet.o
LD [M] /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.o
Building modules, stage 2.
MODPOST 1 modules
CC /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.mod.o
LD [M] /usr/lib/parallels-tools/kmods/prl_eth/pvmnet/prl_eth.ko
make[2]: Leaving directory '/usr/src/kernels/4.4.9-300.fc23.x86_64+debug'
make[1]: Leaving directory '/usr/lib/parallels-tools/kmods/prl_eth/pvmnet'
cd prl_tg/Toolgate/Guest/Linux/prl_tg && make
make[1]: Entering directory '/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg'
make -C /lib/modules/4.4.9-300.fc23.x86_64+debug/build SUBDIRS=/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg SRCROOT=/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg modules
make[2]: Entering directory '/usr/src/kernels/4.4.9-300.fc23.x86_64+debug'
CC [M] /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prltg.o
LD [M] /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prl_tg.o
Building modules, stage 2.
MODPOST 1 modules
FATAL: modpost: GPL-incompatible module prl_tg.ko uses GPL-only symbol '__init_work'
scripts/Makefile.modpost:91: recipe for target '__modpost' failed
make[3]: *** [__modpost] Error 1
Makefile:1391: recipe for target 'modules' failed
make[2]: *** [modules] Error 2
make[2]: Leaving directory '/usr/src/kernels/4.4.9-300.fc23.x86_64+debug'
/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/Makefile.v26:29: recipe for target 'prl_tg' failed
make[1]: *** [prl_tg] Error 2
make[1]: Leaving directory '/usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg'
Makefile.kmods:34: recipe for target 'installme' failed
make: *** [installme] Error 2
make: Leaving directory '/usr/lib/parallels-tools/kmods'
Error: could not build kernel modules
Error: failed to install kernel modules
2016-05-31T16:49:41+0200: execCmd: ./install --install [143]
2016-05-31T16:49:41+0200: Error: An error occurred when installing Parallels Tools. Please go to /var/log/parallels-tools-install.log for more information.
2016-05-31T16:49:43+0200: Exiting with code 1