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ubuntu-gcc12 update gcc? #98

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#99
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ubuntu-gcc12 update gcc?#98
#99
@jonkeane

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@jonkeane
jonkeane
opened on Jan 14, 2026

On the website it is noted that ubuntu-gcc12 is equivalent to r-devel-linux-x86_64-debian-gcc, but looking at https://cran.r-project.org/web/checks/check_flavors.html it looks like r-devel-linux-x86_64-debian-gcc is on GCC 15 these days.

I suspect it might be "just" updating

containers/containers/ubuntu-gcc12/Dockerfile

Lines 24 to 35 in 1033a79

# ------------------------------------------------------------------------------------
# gcc 12, gfortran 12
RUN export DEBIAN_FRONTEND=noninteractive && \
apt-get update -y && \
apt-get install -y gcc-12 g++-12 gfortran-12 && \
apt-get clean
# We do not replace -lgfortran!
RUN sed -i 's/gcc/gcc-12/g' /opt/R/devel/lib/R/etc/Makeconf && \
sed -i 's/g[+][+]/g++-12/g' /opt/R/devel/lib/R/etc/Makeconf && \
sed -i 's/\bgfortran/gfortran-12/g' /opt/R/devel/lib/R/etc/Makeconf
Or maybe it makes sense to make a separate ubuntu-gcc15?

I'm happy to give that a go if you're open to it.

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