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

13 Oct 2014

      If this is indeed unfamiliar, should I file a new ticket?

Murray.

On Mon, Oct 6, 2014 at 4:59 PM, Murray Campbell  wrote:
...
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
            ^