On Sat, Jan 17, 2026 at 11:47:37AM +0000, Gavin Smith wrote: > If I run "./configure PERL_EXT_CC=failcc", this completes successfully > and disables XS modules: > > But then "make check" fails badly. > > $ perl -w t/02coverage.t > ok 1 > perl: symbol lookup error: t//../../C/.libs/libtexinfoxs.so.1: undefined > symbol: newSVpv_utf8 > > According to the output of "TEXINFO_XS=debug perl -w t/02coverage.t", a large > amount of C libraries and XS overrides are loaded anyway.
I just commited changes to avoid loading XS overrides when XS modules are disabled at configure time. I believe that the issue you reported was there for a long time, maybe even since the first MiscXS modules. It never showed in practice because the situation do not often arises, and maybe we just did make clean when it happened, and because before some point, with the C codes in libraries, the modules could be loaded and used even if XS modules were disabled, and it would not have been noticed unless one had TEXINFO_XS=debug set. -- Pat
