building ghc-8.4.2 from source: undefined reference to 'mpz_powm_sec'

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building ghc-8.4.2 from source: undefined reference to 'mpz_powm_sec'

Johannes Waldmann-2
Dear Cafe,

I am getting this when building ghc-8.4.2 from source,
with ghc-8.2.2:

ghc-8.4.2/libraries/integer-gmp/dist-install/build/libHSinteger-gmp-1.0.2.0_p.a(wrappers.p_o):wrappers.c:function
integer_gmp_powm_sec: error: undefined reference to 'mpz_powm_sec'
collect2: error: ld returned 1 exit status
`gcc' failed in phase `Linker'. (Exit code: 1)
make[1]: *** [iserv/ghc.mk:104: iserv/stage2_p/build/tmp/ghc-iserv-prof]
Error 1

This may be due to some mis-config on my part,
because I'm getting this on one machine only, and it works on others.

Still, perhaps you have seen this before, and could help me with
an educated guess on what may have caused this.

It is especially puzzling because this install of ghc-8.2.2
seems to work perfectly fine for all of my projects.

Thanks - J.W.
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Re: building ghc-8.4.2 from source: undefined reference to 'mpz_powm_sec'

joshchia
You can start by checking whether you have libgmp and whether it has the referenced symbol, e.g. on my machine, there's a /usr/lib64/libgmp.a, and I get this:

$ nm /usr/lib64/libgmp.a | grep mpz_powm_sec
0000000000000000 T __gmpz_powm_sec

I'm not sure what the relationship is between __gmpz_powm_sec and mpz_powm_sec, though it may be just some naming convention.

Without knowing much about various versions of GHC or libgmp, I think it's possible that newer GHC requires newer libgmp that has this symbol and you have an older libgmp.

Josh

On Fri, Apr 20, 2018 at 3:31 PM, Johannes Waldmann <[hidden email]> wrote:
Dear Cafe,

I am getting this when building ghc-8.4.2 from source,
with ghc-8.2.2:

ghc-8.4.2/libraries/integer-gmp/dist-install/build/libHSinteger-gmp-1.0.2.0_p.a(wrappers.p_o):wrappers.c:function
integer_gmp_powm_sec: error: undefined reference to 'mpz_powm_sec'
collect2: error: ld returned 1 exit status
`gcc' failed in phase `Linker'. (Exit code: 1)
make[1]: *** [iserv/ghc.mk:104: iserv/stage2_p/build/tmp/ghc-iserv-prof]
Error 1

This may be due to some mis-config on my part,
because I'm getting this on one machine only, and it works on others.

Still, perhaps you have seen this before, and could help me with
an educated guess on what may have caused this.

It is especially puzzling because this install of ghc-8.2.2
seems to work perfectly fine for all of my projects.

Thanks - J.W.
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Re: building ghc-8.4.2 from source: undefined reference to 'mpz_powm_sec'

Johannes Waldmann-2
Hi

> You can start by checking whether you have libgmp

ah yes, I was missing the "gmp-static" package (on Fedora)
so the compilation picked up some other gmp version
installed someplace else. (Worse, since I had "gmp-devel",
I think it picked the .so from one place, and .a from another.)
Thanks, and sorry for the noise.

- J.W.
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