Where can I get the correct macro names for .stldr file?

[DK.7]

I'm trying to create my own .stldr file. I follow this instruction

https://youtu.be/XqCq0xtQmbI

And when I replace the default linker script with "my own", the code doesn't compile...

Where can I get the correct macro names?

PS - my board is: STM32H750VBT6 from WeActTC wich has 8MB QSPI Flash.

And WeActTC created a file "STM32H7xx_W25Qxx_WeActStudio.stldr" but it for 16 MB QSPI https://github.com/WeActTC/MiniSTM32H7xx/tree/master/SDK/QSPI_Flasher

Or I can use it for my 8MB QSPI?