GNU linker flags evaluation on Windows

Question

I'm following this tutorial to add an automatic build versioning system on Kinetis KDS(Eclipse CDT, Windows 10).

The example evaluates expressions using Linux shell commands like this

-Xlinker --defsym -Xlinker __BUILD_NUMBER=$$(cat $(BUILD_NUMBER_FILE))

that obviously doesn't work on Windows.

I tried various combinations using type instead of cat, but none of them worked.

What's the fastest way to define a symbol as the content of a file?

Answer 1

Assuming the build-number file is a one-liner, then like this:

set /p BUILDNO=<build-number.txt
...
gcc ... -Xlinker --defsym -Xlinker __BUILD_NUMBER=%BUILDNO%