GH-43805: [C++] Enable filesystem automatically when one of ARROW_{AZURE,GCS,HDFS,S3}=ON is specified #43806
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Rationale for this change
ARROW_{AZURE,GCS,HDFS,S3}=ON
are meaningful only when filesystem is enabled. If the user specified one of them, we can assume that the user wants to enable filesystem.What changes are included in this PR?
Enable
ARROW_FILESYSTEM
when one ofARROW_{AZURE,GCS,HDFS,S3}=ON
are specified.Are these changes tested?
Yes.
Are there any user-facing changes?
Yes.
ARROW_FILESYSTEM
is enabled automatically with one ofARROW_{AZURE,GCS,HDFS,S3}=ON
.