Description of problem: httpd-devel provides various macro, used by other packages (mod_) which are not available for SCL build (so spec file need more change for SCL compatibility, e.g. _httpd24_mmn vs _http_mmn) scl-utils allow to override such macro using the "scl_package_override" call.
Created attachment 1283790 [details] macros.build
Created attachment 1283791 [details] spec.patch
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2017:3018