There have been a few of these bugs recently it seems. If you could:
use the stage1 compiler to compile a simple executable, like 'main =
return ()' or hello world or whatever.
The stage1 compiler can be located in the build directory, under
'inplace/bin/ghc-stage1'. So something like:
<GHC BUILD>/inplace/bin/ghc-stage1 -fforce-recomp hello_world.hs
Check if the output executable crashes immediately. If it does, then
it is likely a miscompilation of the runtime or libraries somewhere.
Otherwise, we'll have to narrow down another way.
If it does fail, please use GDB on the executable, and give a
backtrace from the crash (using the 'bt' command, after the program
has crashed.)
You can also try linking with the debug RTS, by passing the -debug and
-rtsopts flag to ghc-stage1. Then run again, and see if something else
was tripped. You can see all the sanity checks you can enable, if you
run the executable using './program.exe +RTS --help'. The debug flags
are named things like '-Ds' and '-Da', etc and should be passed to the
RTS.
On Thu, Jan 17, 2013 at 1:11 PM,
On Wed, 16 Jan 2013, Karel Gardas wrote:
On 01/16/13 08:12 PM, roconnor@theorem.ca wrote:
On Wed, 16 Jan 2013, Karel Gardas wrote:
Good! So the patch I already provided is working fine at least w.r.t. change in configure. I've tested it here on my raspbian chroot on pandaboard where I've hacked config.guess to print exactly what you get on real rpi.
Now, I'm curious if the hack in DriverPipeline.hs helps too.
Were you able to merge the patch into your GHC? And rebuild? What was the result?
I'm still trying to figure out the correct usage of -optlc-float-abi=hard in mk/build.mk. I've ben getting a lot of errors about two occurances of the float-abi=hard flag.
You should not IMHO. My patch should solve all your issues. :-) The only issue you may get is that your distro ghc will compile for soft-float ABI and your compiled GHC will compile to hard-float and object files will get mixed somewhere. But I trust your distro ghc builders that this is not the case so both GHCs should compile using hard-float. So issue solved, at least should be. Now I'm just waiting if you verify this or not so I'm either able to submit the patch for inclusion or hack it more...
The first run of the stage2 compilier fails with a segfault:
HC [stage 2] utils/ghctags/dist-install/build/Main.o /bin/sh: line 1: 30064 Segmentation fault "inplace/bin/ghc-stage2" -H64m -Rghc-timing -optc-mfloat-abi=hard -optc-march=armv6 -optc-mfpu=vfp -optlc=-mattr=+vfp2 -i -iutils/ghctags/. -iutils/ghctags/dist-install/build -iutils/ghctags/dist-install/build/autogen -Iutils/ghctags/dist-install/build -Iutils/ghctags/dist-install/build/autogen -package ghc -no-user-package-db -rtsopts -odir utils/ghctags/dist-install/build -hidir utils/ghctags/dist-install/build -stubdir utils/ghctags/dist-install/build -hisuf hi -osuf o -hcsuf hc -c utils/ghctags/./Main.hs -o utils/ghctags/dist-install/build/Main.o make[1]: *** [utils/ghctags/dist-install/build/Main.o] Error 139
make: *** [all] Error 2
using
SRC_HC_OPTS = -H64m -Rghc-timing -optc-mfloat-abi=hard -optc-march=armv6 -optc-mfpu=vfp -optlc=-mattr=+vfp2 GhcStage1HcOpts = -O -fllvm GhcStage2HcOpts = -O0 -fllvm GhcLibHcOpts = -O -fllvm
-- Russell O'Connor http://r6.ca/ ``All talk about `theft,''' the general counsel of the American Graphophone Company wrote, ``is the merest claptrap, for there exists no property in ideas musical, literary or artistic, except as defined by statute.''
_______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
-- Regards, Austin