Troubles when building ghc

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Troubles when building ghc

Neophytos Michael
I am having some trouble building ghc on ubuntu.  I have ghc 8.8.4 installed on the machine.  I pulled from the main repository and followed the instructions here: https://gitlab.haskell.org/ghc/ghc/-/wikis/building/hadrian

Building with:
./hadrian/build -j

it builds for a long time until it finally fails with the message below.  I would appreciate some advice on how to fix this.

Thank you,
Neo

===========================
Exit code: 1
Stderr and Stdout:
_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3495:3: error:
    Variable not in scope: int16ToInt# :: Int# -> Int#
     |
3495 |   int16ToInt#
     |   ^^^^^^^^^^^

_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3520:3: error:
    Variable not in scope: int32ToInt# :: Int# -> Int#
     |
3520 |   int32ToInt#
     |   ^^^^^^^^^^^
===========================
On that line (in Lexer.hs) we see:

#if __GLASGOW_HASKELL__ >= 901
  int16ToInt#
#endif
    (indexInt16OffAddr# arr off)
#endif

so we are in the "then" clause and somehow "int16ToInt#" is nowhere to be found.

--
Neo


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Re: Troubles when building ghc

Richard Eisenberg-5
Without having particular knowledge about this specific error: try upgrading `alex`, the tool that GHC uses to produce its lexer. It's possible a newer version of that tool will fix this problem.

Richard

On Dec 23, 2020, at 1:37 PM, Neophytos Michael <[hidden email]> wrote:

I am having some trouble building ghc on ubuntu.  I have ghc 8.8.4 installed on the machine.  I pulled from the main repository and followed the instructions here: https://gitlab.haskell.org/ghc/ghc/-/wikis/building/hadrian

Building with:
./hadrian/build -j

it builds for a long time until it finally fails with the message below.  I would appreciate some advice on how to fix this.

Thank you,
Neo

===========================
Exit code: 1
Stderr and Stdout:
_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3495:3: error:
    Variable not in scope: int16ToInt# :: Int# -> Int#
     |
3495 |   int16ToInt#
     |   ^^^^^^^^^^^

_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3520:3: error:
    Variable not in scope: int32ToInt# :: Int# -> Int#
     |
3520 |   int32ToInt#
     |   ^^^^^^^^^^^
===========================
On that line (in Lexer.hs) we see:

#if __GLASGOW_HASKELL__ >= 901
  int16ToInt#
#endif
    (indexInt16OffAddr# arr off)
#endif

so we are in the "then" clause and somehow "int16ToInt#" is nowhere to be found.

--
Neo

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[hidden email]
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Re: Troubles when building ghc

John Ericson-2

Actually, your alex is too new. See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/4657. If you take the latest master, it will contain that, and your problem will be fixed.

On 12/23/20 2:10 PM, Richard Eisenberg wrote:
Without having particular knowledge about this specific error: try upgrading `alex`, the tool that GHC uses to produce its lexer. It's possible a newer version of that tool will fix this problem.

Richard

On Dec 23, 2020, at 1:37 PM, Neophytos Michael <[hidden email]> wrote:

I am having some trouble building ghc on ubuntu.  I have ghc 8.8.4 installed on the machine.  I pulled from the main repository and followed the instructions here: https://gitlab.haskell.org/ghc/ghc/-/wikis/building/hadrian

Building with:
./hadrian/build -j

it builds for a long time until it finally fails with the message below.  I would appreciate some advice on how to fix this.

Thank you,
Neo

===========================
Exit code: 1
Stderr and Stdout:
_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3495:3: error:
    Variable not in scope: int16ToInt# :: Int# -> Int#
     |
3495 |   int16ToInt#
     |   ^^^^^^^^^^^

_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3520:3: error:
    Variable not in scope: int32ToInt# :: Int# -> Int#
     |
3520 |   int32ToInt#
     |   ^^^^^^^^^^^
===========================
On that line (in Lexer.hs) we see:

#if __GLASGOW_HASKELL__ >= 901
  int16ToInt#
#endif
    (indexInt16OffAddr# arr off)
#endif

so we are in the "then" clause and somehow "int16ToInt#" is nowhere to be found.

--
Neo

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ghc-devs mailing list
[hidden email]
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs


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[hidden email]
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Re: Troubles when building ghc

Neophytos Michael
Thank you for that.  After downgrading alex I was able to build ghc properly.

By the way, is there a way from cabal to uninstall a package?  I actually had both versions of alex on my machine but somehow ghc would always pick up the latest one.  I couldn't find a way to uninstall alex, so I just gave up and removed the entire cabal directory and reinstalled everything (which fortunately wasn't much) plus the old version of alex.

Neo


On Wed, Dec 23, 2020 at 9:12 PM John Ericson <[hidden email]> wrote:

Actually, your alex is too new. See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/4657. If you take the latest master, it will contain that, and your problem will be fixed.

On 12/23/20 2:10 PM, Richard Eisenberg wrote:
Without having particular knowledge about this specific error: try upgrading `alex`, the tool that GHC uses to produce its lexer. It's possible a newer version of that tool will fix this problem.

Richard

On Dec 23, 2020, at 1:37 PM, Neophytos Michael <[hidden email]> wrote:

I am having some trouble building ghc on ubuntu.  I have ghc 8.8.4 installed on the machine.  I pulled from the main repository and followed the instructions here: https://gitlab.haskell.org/ghc/ghc/-/wikis/building/hadrian

Building with:
./hadrian/build -j

it builds for a long time until it finally fails with the message below.  I would appreciate some advice on how to fix this.

Thank you,
Neo

===========================
Exit code: 1
Stderr and Stdout:
_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3495:3: error:
    Variable not in scope: int16ToInt# :: Int# -> Int#
     |
3495 |   int16ToInt#
     |   ^^^^^^^^^^^

_build/stage1/compiler/build/GHC/Parser/Lexer.hs:3520:3: error:
    Variable not in scope: int32ToInt# :: Int# -> Int#
     |
3520 |   int32ToInt#
     |   ^^^^^^^^^^^
===========================
On that line (in Lexer.hs) we see:

#if __GLASGOW_HASKELL__ >= 901
  int16ToInt#
#endif
    (indexInt16OffAddr# arr off)
#endif

so we are in the "then" clause and somehow "int16ToInt#" is nowhere to be found.

--
Neo

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ghc-devs mailing list
[hidden email]
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs


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[hidden email]
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs


--
Neophytos


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