This one is big, but unless I missed something, should be all be
trivial.
scripted-diff with the following, then manually tweaked whatever needed:
```
if [ $# -ne 3 ]; then
echo "Usage: $0 '<pattern>' '<replacement>' '<filename>'"
exit 1
fi
pattern="$1"
replacement="$2"
filename="$3"
if [ ! -f "$filename" ]; then
echo "Error: File $filename does not exist."
exit 1
fi
sed -i '/'"$pattern"'/ {
:loop
$ !{
N
/'"$pattern"'.*\n.*#endif/ {
s/'"$pattern"'/'"$replacement"'/
s/#else/} else {/
s/#endif/}/
P
D
}
/'"$pattern"'/ b loop
}
}' "$filename"
echo "Replacement complete in $filename"
```
h/t to Grok2 for the sed command
* Move main executable files to their own directory
* Adapt the build to the new file structure
... and fix some weird #include's that were relying on the project root
being an include directory.