Commits
Uwe L. Korn authored and Wes McKinney committed 4fe873e58ee
ARROW-4903: [C++] Fix static/shared-only builds This also add two new docker configurations (`cpp-static-only` and `cpp-shared-only`) to test for these issues. This should also fix https://issues.apache.org/jira/browse/ARROW-4848 Author: Uwe L. Korn <uwelk@xhochy.com> Closes #3928 from xhochy/ARROW-4903 and squashes the following commits: a8070e35f <Uwe L. Korn> clang-format 20b779525 <Uwe L. Korn> cmake-format d16900d2b <Uwe L. Korn> ARROW-4903: Fix static/shared-only builds