Compilation fails on Linux if user's default shell is not bash-compatible

[minexew]

Botan imported into project through Dub dependencies

Default shell is fish, version 2.6.0

Attempting to build the project yields this output:

Running pre-generate commands for botan...
fish: Unsupported use of '||'. In fish, please use 'COMMAND; or COMMAND'.
ld -v | grep 'gold' > /dev/null || echo 'Notice: Botan uses many symbols. Look into switching from ld (bfd) to ld (Gold) linker to reduce link times from >15s to <2s'
                                 ^

Command failed with exit code 127
Builder finished with result 2