Ben Beasley wrote:
Yes, the devtoolsets work nicely if you supply the appropriate incantations. I 
haven’t tried in COPR specifically
I've just tried and it seems that devtoolset are not available for epel7 builds in Copr. (For epel7, I successfully build seamonkey with devtoolset already for years :) )

There is a possibility to use an additional external repo for Copr. But there are issues with this.

First, the appropriate CentOS repo http://mirror.centos.org/centos/7/sclo/x86_64/rh/ does not have the latest llvm packages (for clang) -- say, llvm-toolset-11-* . (BTW, why??)

Second, the alternate Springdale Linux repo http://springdale.princeton.edu/data/springdale/SCL/7/x86_64/ seems to have all the ones (which are provided in sources by RedHat), but cannot be used in Copr. Springdale provides devtoolset-3-elfutils there, and it in some strange way  badly correlates with the initial Copr build environment (even before the rpmbuild process starts). Some python2 module cannot find libelf.so.1 ...

So the general questions are:
- Whether it is possible to enable "rhel7-server-rhscl-7" and friends for epel7 builds in Copr? (See https://koji.fedoraproject.org/koji/taginfo?tagID=259 for more info); - Why the user specified additional repos affect the initial set of packages used for the build environment?


~buc

P.S. Does anybody know a repo (besides Springdale) with the latest llvm-toolset-* provided?
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