Anyone managed to install httpd_devel on SME?
SME server is not a development platform. The developers all use, and recommend, that you use CentOS for development. We also recommend that you search for prebuilt RPMs before trying to build stuff for yourself. Why did you want to install httpd_devel?
I am using SME 7b9 (Apache 2.0.52)
Nobody should be using 7b9. Please upgrade, so that you are testing 7.0rc1.