Hello. # I'm not sure -hakcers is the place for this, though..
I notieced that the official PG12-devel RPM pacakge for RHEL8 mandates ccache being installed on building of an extension. $ grep ccache /usr/pgsql-12/lib/pgxs/src/Makefile.global CLANG = /usr/lib64/ccache/clang # ccache loses .gcno files However it can be changed by explicitly setting CLANG, it seems that that setting is by accident since gcc is not ccachi'fied. Anyway, I'm not sure but, I think that that decision should be left with extension developers. Is it intentional? regards. -- Kyotaro Horiguchi NTT Open Source Software Center