R does not build with conda libcurl

On Mon, 14 Apr 2025 14:10:56 +0200

/usr/bin/ld : ../../lib/libR.so : r?f?rence ind?finie vers
? u_getVersion_73 ?

Strange that it's complaining about symbols from libicu when the
problem is due to libcurl-related flags. What was the command line used
to link libR.so somewhere above in the log? I think it's not being
correctly linked with libicu, but since shared libraries are allowed to
have undefined imports in them, this is only found out later, when
linking the R.bin executable.

It seems that the libcurl package in conda provides the curl-config
command line program, which R is using to get this flag:
-I/home/local/USHERBROOKE/hoct2726/miniconda3/include

With libcurl installed from conda, what do the following commands print?

curl-config --built-shared
curl-config --static-libs
curl-config --libs

To fix the build, I did "conda remove libcurl" and then "make clean"
and then "configure" and "make" worked.

It should also be possible to override the path to curl-config using
the CURL_CONFIG environment variable.

Best regards,
Ivan