MacOS,Arm: conf-mpfr-paths does not install

[xrival]

The installation of conf-mpfr-paths fails on my MacOS, Arm machine with:

# exit-code 1
# env-file ~/.opam/log/conf-mpfr-paths-9871-1b00ec.env
# output-file ~/.opam/log/conf-mpfr-paths-9871-1b00ec.out
### output ###
# checking compilation with cc -O2 -fno-strict-aliasing -fwrapv -pthread -D_FILE_OFFSET_BITS=64 -I/opt/homebrew/opt/llvm/include: working
# looking for mpfr without prefix
# include mpfr.h: found in /opt/homebrew/include
# library mpfr: found in
# error: unable to locate mpfr library

MPFR is installed with brew and present at the path:

/opt/homebrew/Cellar/mpfr/4.2.1/

The above message says (rightfully) that mpfr.h is installed, but the mpfr seems either not found or the directory found for it seems to be the empty string.

[mseri]

Ping @nberth, is this solved by your recent PR?

[nberth]

Ping @nberth, is this solved by your recent PR?

Hum… probably not. There's currently a known issue with locales other than "English" I did not fix yet. @xrival could you try with the workaround suggested at nberth/ez-conf-lib#2 ?

[xrival]

The result is the same.

Below is my locale information:

$ locale
LANG=""
LC_COLLATE="C"
LC_CTYPE="UTF-8"
LC_MESSAGES="C"
LC_MONETARY="C"
LC_NUMERIC="C"
LC_TIME="C"
LC_ALL=

and:
$ defaults read -g AppleLocale
en_FR

Also, I would like to add, in case it helps, that it used to work a couple of weeks ago and broke during an upgrade.

[xrival]

I looked a bit into the script ez-conf-lib, and found that the $libdir is not properly computed in function checklib apparently due to lookup_lib returning an empty string (the sed in the latter seems rather fragile, so that could explain). I do not have time to search more at this point (but give a hard coded $libdir as a work around).