-fvisibility=hidden, -fvisibility-inlines-hidden are now supplied automatically by b2, because the default for the visibility feature when building Boost is hidden.
-ftemplate-depth-255 (itself an obsolete spelling for -ftemplate-depth=255) is no longer necessary, because the default as of C++11 is 1024 (so 255 actually decreases it).
In addition, none of these options are supported by Clang for Windows (clang-cl), so removing them avoids warnings when building with it.
…til/test.jam
-fvisibility=hidden,-fvisibility-inlines-hiddenare now supplied automatically by b2, because the default for thevisibilityfeature when building Boost ishidden.-ftemplate-depth-255(itself an obsolete spelling for-ftemplate-depth=255) is no longer necessary, because the default as of C++11 is 1024 (so 255 actually decreases it).In addition, none of these options are supported by Clang for Windows (clang-cl), so removing them avoids warnings when building with it.