HEAD bootstrap error macOS

[Ben Gamari]

Gabor Greif <ggreif at gmail.com> writes:

> Recently I started getting following error:
> ```
> [nix-shell:~/ghc]$ "inplace/bin/ghc-stage1" -optc-Wall -optc-Wall
> -optc-Wextra -optc-Wstrict-prototypes -optc-Wmissing-prototypes
> -optc-Wmissing-declarations -optc-Winline -optc-Wpointer-arith
> -optc-Wmissing-noreturn -optc-Wnested-externs -optc-Wredundant-decls
> -optc-Wno-aggregate-return -optc-Iincludes -optc-Iincludes/dist
> -optc-Iincludes/dist-derivedconstants/header
> -optc-Iincludes/dist-ghcconstants/header
> -optc-Iincludes/dist-install/build -optc-Irts -optc-Irts/dist/build
> -optc-DCOMPILING_RTS -optc-DFS_NAMESPACE=rts -optc-fno-strict-aliasing
> -optc-fno-common -optc-DDTRACE -optc-Irts/dist/build/./autogen
> -optc-Wno-unknown-pragmas -optc-O2 -optc-fomit-frame-pointer -optc-g
> -optc-DRtsWay=\"rts_thr\" -static -optc-DTHREADED_RTS  -O0 -H64m -Wall
>   -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header
> -Iincludes/dist-ghcconstants/header -Iincludes/dist-install/build
> -Irts -Irts/dist/build -DCOMPILING_RTS -DFS_NAMESPACE=rts
> -this-unit-id rts -dcmm-lint  -DDTRACE     -i -irts -irts/dist/build
> -Irts/dist/build -irts/dist/build/./autogen -Irts/dist/build/./autogen
>            -O2 -Wcpp-undef    -Wnoncanonical-monad-instances  -c
> rts/sm/Scav_thr.c -o rts/dist/build/sm/Scav_thr.thr_o -v
> Glasgow Haskell Compiler, Version 8.11.0.20191222, stage 1 booted by
> GHC version 8.6.5
> *** initializing package database:
> Using binary package database:
> /Users/ggreif/ghc/inplace/lib/package.conf.d/package.cache
> package flags []
> loading package database /Users/ggreif/ghc/inplace/lib/package.conf.d
> wired-in package ghc-prim mapped to ghc-prim-0.6.1
> wired-in package integer-wired-in mapped to integer-gmp-1.0.2.0
> wired-in package base mapped to base-4.14.0.0
> wired-in package rts mapped to rts
> wired-in package template-haskell mapped to template-haskell-2.16.0.0
> wired-in package ghc mapped to ghc-8.11.0.20191222
> !!! initializing package database: finished in 8.51 milliseconds,
> allocated 8.770 megabytes
> Created temporary directory:
> /var/folders/39/lr50t0q96tx5qp0mzht34r240000gn/T/ghc55616_0
> *** systool:cc:
> *** C Compiler:
> /nix/store/mq8dqgqf2qqkp77pzf3jwc05px8rkbny-clang-wrapper-9.0.0/bin/cc
> -x c rts/sm/Scav_thr.c -o
> /var/folders/39/lr50t0q96tx5qp0mzht34r240000gn/T/ghc55616_0/ghc_1.s
> -fno-common -U__PIC__ -D__PIC__ -Wimplicit -S -O2 -include
> /Users/ggreif/ghc/includes/ghcversion.h -Iincludes -Iincludes/dist
> -Iincludes/dist-derivedconstants/header
> -Iincludes/dist-ghcconstants/header -Iincludes/dist-install/build
> -Irts -Irts/dist/build -Irts/dist/build -Irts/dist/build/./autogen
> -I/Users/ggreif/ghc/libraries/base/include
> -I/Users/ggreif/ghc/libraries/base/dist-install/build/include
> -I/Users/ggreif/ghc/libraries/base/dist-install/build/dist-install/build/include
> -I/Users/ggreif/ghc/libraries/integer-gmp/include
> -I/Users/ggreif/ghc/libraries/integer-gmp/dist-install/build/include
> -I/Users/ggreif/ghc/libraries/integer-gmp/dist-install/build/dist-install/build/include
> -I/Users/ggreif/ghc/rts/dist/build -I/Users/ggreif/ghc/includes
> -I/Users/ggreif/ghc/includes/dist-derivedconstants/header
> -I/Users/ggreif/ghc/includes/dist-install/build -Xpreprocessor
> -DCOMPILING_RTS -Xpreprocessor '-DFS_NAMESPACE=rts' -Xpreprocessor
> -DDTRACE -Wall -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes
> -Wmissing-declarations -Winline -Wpointer-arith -Wmissing-noreturn
> -Wnested-externs -Wredundant-decls -Wno-aggregate-return -Iincludes
> -Iincludes/dist -Iincludes/dist-derivedconstants/header
> -Iincludes/dist-ghcconstants/header -Iincludes/dist-install/build
> -Irts -Irts/dist/build -DCOMPILING_RTS '-DFS_NAMESPACE=rts'
> -fno-strict-aliasing -fno-common -DDTRACE -Irts/dist/build/./autogen
> -Wno-unknown-pragmas -O2 -fomit-frame-pointer -g '-DRtsWay="rts_thr"'
> -DTHREADED_RTS
>
> In file included from rts/sm/Scav_thr.c:3:0: error:
>
> In file included from rts/sm/Scav.c:51:0: error:
>
> In file included from rts/sm/GCUtils.h:18:0: error:
>
> rts/sm/GCTDecl.h:113:1: error:
>      error: register '%r13' unsuitable for global register variables
> on this target
>     |
> 113 | GCT_REG_DECL(gc_thread*, gct, REG_Base);
>     | ^
> GCT_REG_DECL(gc_thread*, gct, REG_Base);
> ^
Hmmm, this is quite odd. Is this a clean tree? Have you pulled without
re-./booting and ./configure'ing recently? Are you using Apple's Clang?

In short, we shouldn't be using a register variable at all on OS X
(since Apple's Clang doesn't support register variables, as this error
suggests). Rather, we use TLS. This is implemented here [1]. Perhaps
check what value configure computed for CC_LLVM_BACKEND?

Cheers,

- Ben


[1] https://gitlab.haskell.org/ghc/ghc/blob/master/rts/sm/GCTDecl.h#L69
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