Go to $LOROOT/instdir/sdk and run :
$ ./setsdkenv_unix
hit enter for all questions, letting it use the defaults except for "Automatic deployment of UNO components (YES/NO) [YES]: " type NO.
This will show something like the following after it finishes.
************************************************************************
* ... your SDK environment has been prepared.
* For each time you want to use this configured SDK environment, you
* have to run the "setsdkenv_unix" script file!
* Alternatively can you source one of the scripts
* "/home/dennis/libreoffice5.3_sdk/dennis-work/setsdkenv_unix.sh"
* to get an environment without starting a new shell.
************************************************************************
************************************************************************
*
* SDK environment is prepared for Linux
*
* SDK = /ssd1/work/dennis/core/instdir/sdk
* Office = /ssd1/work/dennis/core/instdir/sdk/..
* Make = /usr/bin
* Zip = /usr/bin
* cat = /usr/bin
* sed = /usr/bin
* C++ Compiler = /usr/bin
* Java = /usr
* SDK Output directory = /home/dennis/libreoffice5.3_sdk
* Auto deployment = NO
*
************************************************************************
As the first section says, you need to run following in the shell before trying to build our own extensions/UNO standalone programs.
$ source /home/dennis/libreoffice5.3_sdk/dennis-work/setsdkenv_unix.sh
NOTE : You can also add the above line to ~/.bashrc so that this line is run automatically every time you start terminal.