armv7 "invalid instruction" problem building cabal

Ben Burdette bburdette at
Fri Aug 21 21:18:44 UTC 2015

On 08/21/2015 03:16 PM, Erik de Castro Lopo wrote:
> Ben Burdette wrote:
>> I've been trying to get going with ghc 7.10.2 on armv7 debian, problem
>> is described here:
> Sorry, I'll answer here instead of SO if thats OK. Mostly because I
> don't have an answer and need to ask you to provide more info.
> As a first step, what is the output of "ghc --info"?
> Cheers,
> Erik
No prob!  Either forum is ok for me.  get info output:

 [("Project name","The Glorious Glasgow Haskell Compilation System")
 ,("GCC extra via C opts"," -fwrapv")
 ,("C compiler command","/usr/bin/gcc")
 ,("C compiler flags"," -fno-stack-protector")
 ,("C compiler link flags"," -fuse-ld=gold -Wl,-z,noexecstack")
 ,("Haskell CPP command","/usr/bin/gcc")
 ,("Haskell CPP flags","-E -undef -traditional ")
 ,("ld command","/usr/bin/")
 ,("ld flags"," -z noexecstack")
 ,("ld supports compact unwind","YES")
 ,("ld supports build-id","YES")
 ,("ld supports filelist","NO")
 ,("ld is GNU ld","YES")
 ,("ar command","/usr/bin/ar")
 ,("ar flags","q")
 ,("ar supports at file","YES")
 ,("touch command","touch")
 ,("dllwrap command","/bin/false")
 ,("windres command","/bin/false")
 ,("libtool command","libtool")
 ,("perl command","/usr/bin/perl")
 ,("cross compiling","NO")
 ,("target os","OSLinux")
 ,("target arch","ArchARM {armISA = ARMv7, armISAExt = [VFPv3,NEON],
armABI = HARD}")
 ,("target word size","4")
 ,("target has GNU nonexec stack","False")
 ,("target has .ident directive","True")
 ,("target has subsections via symbols","False")
 ,("LLVM llc command","/usr/bin/llc-3.5")
 ,("LLVM opt command","/usr/bin/opt-3.5")
 ,("Project version","7.10.2")
 ,("Project Git commit id","0da488c4438d88c9252e0b860426b8e74b5fc9e8")
 ,("Booter version","7.6.3")
 ,("Build platform","arm-unknown-linux")
 ,("Host platform","arm-unknown-linux")
 ,("Target platform","arm-unknown-linux")
 ,("Have interpreter","YES")
 ,("Object splitting supported","NO")
 ,("Have native code generator","NO")
 ,("Support SMP","YES")
 ,("Tables next to code","YES")
 ,("RTS ways","l debug thr thr_debug thr_l thr_p dyn debug_dyn thr_dyn
thr_debug_dyn l_dyn thr_l_dyn")
 ,("Support dynamic-too","YES")
 ,("Support parallel --make","YES")
 ,("Support reexported-modules","YES")
 ,("Support thinning and renaming package flags","YES")
 ,("Uses package keys","YES")
 ,("Dynamic by default","NO")
 ,("GHC Dynamic","YES")
 ,("Leading underscore","NO")
 ,("Debug on","False")
 ,("Global Package DB","/usr/local/lib/ghc-7.10.2/package.conf.d")

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