mainAutoconf - Support: sr #110448, AC_CONFIG_AUX_DIRS fails with...


sr #110448: AC_CONFIG_AUX_DIRS fails with Windows paths

Submitter:  None
Submitted:  Mon 22 Feb 2021 10:23:28 AM UTC
Category:  None Priority:  5 - Normal
Severity:  3 - Normal Status:  None
Privacy:  Public Assigned to:  None
Originator Email:  -email is unavailable- Open/Closed:  Open
Operating System:  Microsoft Windows
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Mon 22 Feb 2021 10:23:28 AM UTC, original submission:  

Updating to autoconf 2.70 broke the build of GHC (Haskell compiler) on Windows using msys2. I've tracked this to commit 35a1c64600894ecc3b06b6c4b273952db7c8fc83

This commit changed the way the auxiliary dirs are managed. They were put in a space separated list and now they are put in a $PATH_SEPARATOR separated list. I.e. it replaced [AC_CONFIG_AUX_DIRS("$srcdir" "$srcdir/.." "$srcdir/../..")] with  [${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../..].

The issue is that on Windows we call configure with something like "/usr/bin/sh c:\/msys64/home/Sylvain/ghc/libraries/ghc-bignum/configure ..." and $srcdir becomes equal to c:\/msys64/home/Sylvain/ghc/libraries/ghc-bignum/. But $PATH_SEPARATOR=":" so we get:

configure:2437: looking for aux files: config.guess config.sub
configure:2450:  trying C/
configure:2450:  trying \/msys64/home/Sylvain/ghc/libraries/ghc-bignum/
configure:2450:  trying C/
configure:2450:  trying \/msys64/home/Sylvain/ghc/libraries/ghc-bignum/../
configure:2450:  trying C/
configure:2450:  trying \/msys64/home/Sylvain/ghc/libraries/ghc-bignum/../../
configure:2503: error: cannot find required auxiliary files: config.guess config.sub

Shouldn't $ac_aux_dir_candidates be a space-separated list?



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