westonpace opened a new issue, #34228:
URL: https://github.com/apache/arrow/issues/34228
### Describe the bug, including details regarding any error messages,
version, and platform.
I am well beyond my depth here but I was having trouble getting R to detect
that my Arrow build had the datasets feature enabled (I don't normally build R
but built it recently to debug an issue and ran into this).
I get the message `echo "*** Arrow C++ libraries found via pkg-config at
$FOUND_LIB_DIR"` so R is finding Arrow that way. However, later, it seems to
want to find the extra features in this way:
```
# Check for features
ARROW_OPTS_CMAKE="$LIB_DIR/cmake/Arrow/ArrowOptions.cmake"
arrow_built_with() {
# Function to check cmake options for features
grep -i 'set('"$1"' "ON")' $ARROW_OPTS_CMAKE >/dev/null 2>&1
}
```
Since `LIB_DIR` is unset it does not find the `ArrowOptions.cmake` file
(even though I have one and it is installed). I have a fix that sets `LIB_DIR`
in the pkg-config path and will create a PR but I have no idea if that is the
best fix.
### Component(s)
R
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