Re: Errors building GHC on iOS with LLVM >= 3.4

On Sat, Oct 4, 2014 at 7:32 PM, Ben Gamari wrote:

Murray Campbell writes:

[snip]

...

before bailing with

/var/folders/02/0mv6cz6505x2xhzlr279k2340000gp/T/ghc6860_0/ghc6860_6-armv7.s:3916:2: error: out of range pc-relative fixup value vldr d8, LCPI70_0 ^

/var/folders/02/0mv6cz6505x2xhzlr279k2340000gp/T/ghc6860_0/ghc6860_6-armv7s.s:3916:2: error: out of range pc-relative fixup value vldr d8, LCPI70_0 ^

Next I tried to build HEAD (plus phabricator D208) with LLVM 3.4 but got the same error.

I've never seen an error of this form. What symbol definitions does this error occur in?

I have attached a gzipped version of the *-armv7.s file. The one I attached is from a build with LLVM 3.5. I had to apply D208 & D155 to get it to compile. I also had to get the ghc-ios-scripts/arm-apple-darwin10-clang script to pick up the homebrew clang rather than the apple one to get around an 'unknown directive: .maosx_version_min' error. However, the vldr error is identical to that with LLVM 3.4 building 7.8.3. I can get a straight 7.8.3 with LLVM 3.4 version if that would help. The error in the attached file is at line 5988 just below '_c3pb_info$def: '. This is below '_integerzmsimple_GHCziIntegerziType_doubleFromPositive_info$def:' The last lines of build instructions before the error are: "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -H64m -O0 -this-package-key integ_FpVba29yPwl8vdmOmO0xMS -hide-all-packages -i -ilibraries/integer-simple/. -ilibraries/integer-simple/dist-install/build -ilibraries/integer-simple/dist-install/build/autogen -Ilibraries/integer-simple/dist-install/build -Ilibraries/integer-simple/dist-install/build/autogen -Ilibraries/integer-simple/. -optP-include -optPlibraries/integer-simple/dist-install/build/autogen/cabal_macros.h -package-key ghcpr_BE58KUgBe9ELCsPXiJ1Q2r -this-package-key integer-simple -Wall -XHaskell2010 -XCPP -XMagicHash -XBangPatterns -XUnboxedTuples -XUnliftedFFITypes -XNoImplicitPrelude -O -fllvm -no-user-package-db -rtsopts -odir libraries/integer-simple/dist-install/build -hidir libraries/integer-simple/dist-install/build -stubdir libraries/integer-simple/dist-install/build -c libraries/integer-simple/./GHC/Integer/Type.hs -o libraries/integer-simple/dist-install/build/GHC/Integer/Type.o You are using a new version of LLVM that hasn't been tested yet! We will try though... /var/folders/02/0mv6cz6505x2xhzlr279k2340000gp/T/ghc80302_0/ghc80302_6-armv7.s:5988:2: error: out of range pc-relative fixup value vldr d8, LCPI102_0 ^ /var/folders/02/0mv6cz6505x2xhzlr279k2340000gp/T/ghc80302_0/ghc80302_6-armv7s.s:5988:2: error: out of range pc-relative fixup value vldr d8, LCPI102_0 ^