recompile error, genhexkins.c

I have added posemath.h, it still told me undefinded?

the error picture in attachment~~

I'm afraid that you can not use comp for genhexkins.
You have to install run-in-place version of LinuxCNC from source.
Get the source with git wiki.linuxcnc.org/cgi-bin/wiki.pl?Instal..._the_source_with_git
Then resolve build dependencies (2.4) and compile realtime version (2.5)
If everything went OK and you can start RIP version, change genhexkins.c or genhexkins.h at the source tree (/src/emc/kinematics/)
Then just run make in src/ directory and your changes will be applied.

thank for your reply~~~

I have install all git; the error is still~~

and I don't understand your words "If everything went OK and you can start RIP version, change genhexkins.c or genhexkins.h at the source tree (/src/emc/kinematics/)
Then just run make in src/ directory and your changes will be applied."

could you tell me the details? thank you very much~~

forgive me for a newbie~~

He just means build linuxcnc from sources, then when that builds OK, substitute your new files for the old ones and rebuild

I have install all the things, and I find this could be done by another computer

if I deleted some files without conscious?

I still didn't known what's it~~~

Did you install LinuxCNC from source?
I don't understand what error you have now.

I mean when you installed LinuxCNC for example to linuxcnc-dev directory, you can go to linuxcnc-dev/src/emc/kinematics and edit genhexkins.c and genhexkins.h or replace them with your versions. Then you should

cd linuxcnc-dev/src/
make

After that you'll have LinuxCNC with your kinematics.
Run it from terminal

cd linuxcnc-dev/
. ./scripts/rip-environment
linuxcnc

I actually did as what you said, and I can open the hexapod interface by terminal;

but if I recompile genhexkins.c it will show error about undefined

or if I open cnc by application->cnc->linuxcnc->hexapod/hexapod_sim

also has the error about unkown symbol in modules~~