1752159ae0
* Recommend boost >= 1.65.1 and gcc >= 7.4.0 * Require clang >= 4.0, or Xcode >= 9.0 on macOS * Silence an ABI-related diagnostic message from gcc on armv7 * Fix redundant-tags warning with gcc 10 * Add CentOS-specific instructions to docs/INSTALL.rst * Add Xcode 11.5 to Travis CI Refs: #5087, #5106 Change-Id: I70746729a132ecb07d4788934385bb403039dba9