Failed executable build for pandoc-2.0.1.1 (i386 arch)

Failed executable build for pandoc-2.0.1.1 (i386 arch)

[Vicente Vera]

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I tried building pandoc and pandoc-citeproc with a fresh stack
installation (no remnants of previous builds and installs, no added
options or flags) but an error came up near the end.

Last successful installation on the same system was done with snapshot
nightly-2017-07-25 (pandoc-1.19.2.1 and pandoc-citeproc-0.10.5.1).

Some important information:

OS:
Devuan Jessie (debian-based)
Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.43-2+deb8u5 (2017-09-19) 
i686 GNU/Linux
gcc version 4.9.2 (Debian 4.9.2-10)

stack version:
Version 1.5.1, Git revision 600c1f01435a10d127938709556c1682ecfd694e (4861 
commits) i386 hpack-0.17.1

Stackage snapshot:
nightly-2017-11-09 (ghc-8.2.1)

pandoc and pandoc-citeproc versions to install:
pandoc-2.0.1.1 pandoc-citeproc-0.12.1

Shell command:
stack --resolver 'nightly-2017-11-09' install pandoc pandoc-citeproc

Logged error (~/.stack/global-project/.stack-work/logs/pandoc-2.0.1.1.log):
----------------------------------------------------------------------
Preprocessing executable 'pandoc' for pandoc-2.0.1.1..
Building executable 'pandoc' for pandoc-2.0.1.1..
[1 of 2] Compiling Main             ( pandoc.hs, 
.stack-work/dist/i386-linux/Cabal-2.0.0.2/build/pandoc/pandoc-tmp/Main.o )
[2 of 2] Compiling Paths_pandoc     ( 
.stack-work/dist/i386-linux/Cabal-2.0.0.2/build/pandoc/autogen/Paths_pandoc.hs, 
.stack-work/dist/i386-linux/Cabal-2.0.0.2/build/pandoc/pandoc-tmp/Paths_pandoc.o 
)
Linking .stack-work/dist/i386-linux/Cabal-2.0.0.2/build/pandoc/pandoc ...

rts/posix/OSThreads.c:137:0: error:
     error: undefined reference to 'pthread_create'

rts/posix/OSThreads.c:139:0: error:
     error: undefined reference to 'pthread_detach'

rts/posix/OSThreads.c:141:0: error:
     error: undefined reference to 'pthread_setname_np'

rts/posix/OSThreads.c:184:0: error:
     error: undefined reference to 'pthread_key_create'

rts/posix/OSThreads.c:192:0: error:
     error: undefined reference to 'pthread_getspecific'

rts/posix/OSThreads.c:203:0: error:
     error: undefined reference to 'pthread_setspecific'

rts/posix/OSThreads.c:212:0: error:
     error: undefined reference to 'pthread_key_delete'

rts/posix/OSThreads.c:371:0: error:
     error: undefined reference to 'pthread_kill'

includes/rts/OSThreads.h:59:0: error:
     error: undefined reference to 'pthread_mutex_trylock'
collect2: error: ld returned 1 exit status
`gcc' failed in phase `Linker'. (Exit code: 1)
----------------------------------------------------------------------

This is pure speculation: it seems there's a missing argument for
ghc/gcc? After a brief search the "-pthread" argument came up, and
thought about rebooting the build process with this added to
~/.stack/config.yaml:

ghc-options:
    "*": '-optl-pthread'

Since the build takes a considerable amount of time I haven't tried
anything yet.

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Re: Failed executable build for pandoc-2.0.1.1 (i386 arch)

[Vicente Vera]

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The build process finished without errors!

Indeed, adding this line to ~/.stack/config.yaml solved the problem:

ghc-options:
    "*": '-optl-pthread'

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Re: Failed executable build for pandoc-2.0.1.1 (i386 arch)

[John MacFarlane]

I'm curious why this doesn't seem necessary on any of my
linux builds.  (They're all debian-based arm86 -- but why
would that matter?  Any ideas?)

+++ Vicente Vera [Nov 11 17 20:48 ]:
>   The build process finished without errors!
>   Indeed, adding this line to ~/.stack/config.yaml solved the problem:
>   ghc-options:
>       "*": '-optl-pthread'
>
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>References
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