Hello,
Today I tried to rebuild a package in my channel which uses both fmt and
spdlog.
The build failed with a linking error with undefined references for some
spdlog code.
Recently the spdlog symbol got updated to 1.15, when I downgrade to
using spdlog 1.13 the error went away.
After looking around online for similar issues I found that the reason
could be a version mismatch with the fmt package and the fmt bundled
with spdlog.
If I use fmt-11 instead of fmt-9 (the fmt symbol) the issue went away.
I think Guix generally tries to unbundle things if possible and looking
at some build recipes in other distributions (debian, gentoo, fedora)
all of them add the -DSPDLOG_FMT_EXTERNAL=ON flag (usually with an
additional patch to force the unbundled fmt)
Thanks.
