RE: Linking with object files
> On Wednesday 08 January 2003 5:00 pm, Simon Marlow wrote: > > What command line are you using? Here's what I did: > > > > ~/scratch > cat >foo.c > > ~/scratch > gcc -c foo.c > > ~/scratch > ghc --make hello.hs foo.o > > ghc-5.04.2: chasing modules from: hello.hs > > Skipping Main ( hello.hs, ./hello.o ) > > ghc: linking ... > > ~/scratch > > > The exact command line I'm using is.. > ghc --make -fglasgow-exts -Wall -o Main.exe Main.hs Fill.o Render.o > which gives.. > ghc-5.04.2: chasing modules from: Main.hs,Fill.o,Render.o > ghc-5.04.2: can't find module `Fill.o' (while processing "Fill.o") > > But playing about a bit, I found the solution. It doesn't like > upper case object file names. Not sure if that's by design or an > oversight. I've changed them to lower case and it works fine now. Eek! That's a bug, thanks! Cheers, Simon ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Linking with object files
On Wednesday 08 January 2003 5:00 pm, Simon Marlow wrote: > What command line are you using? Here's what I did: > > ~/scratch > cat >foo.c > ~/scratch > gcc -c foo.c > ~/scratch > ghc --make hello.hs foo.o > ghc-5.04.2: chasing modules from: hello.hs > Skipping Main ( hello.hs, ./hello.o ) > ghc: linking ... > ~/scratch > The exact command line I'm using is.. ghc --make -fglasgow-exts -Wall -o Main.exe Main.hs Fill.o Render.o which gives.. ghc-5.04.2: chasing modules from: Main.hs,Fill.o,Render.o ghc-5.04.2: can't find module `Fill.o' (while processing "Fill.o") But playing about a bit, I found the solution. It doesn't like upper case object file names. Not sure if that's by design or an oversight. I've changed them to lower case and it works fine now. Regards -- Adrian Hey ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
RE: Linking with object files
> On Wednesday 08 January 2003 10:04 am, Simon Marlow wrote: > > > I get the error.. can't find module 'foo.o' processing "foo.o"> > > > > I think you must be using a version of GHC prior to 5.04.2. This > > functionality was fixed in 5.04.2. > > I just checked, it really is (or claims to be:-) version 5.04.2. > I get the same error using 5.04.2 under Linux too. What command line are you using? Here's what I did: ~/scratch > cat >foo.c ~/scratch > gcc -c foo.c ~/scratch > ghc --make hello.hs foo.o ghc-5.04.2: chasing modules from: hello.hs Skipping Main ( hello.hs, ./hello.o ) ghc: linking ... ~/scratch > Actually I was incorrect before: this has worked fine in 5.04, 5.04.1 and 5.04.2. The fix made in 5.04.2 was to pass files without a recognised extension through to the linker, to match the behaviour without --make. Cheers, Simon ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Linking with object files
Thanks for your answers On Wednesday 08 January 2003 10:04 am, Simon Marlow wrote: > > I get the error.. can't find module 'foo.o' > > I think you must be using a version of GHC prior to 5.04.2. This > functionality was fixed in 5.04.2. I just checked, it really is (or claims to be:-) version 5.04.2. I get the same error using 5.04.2 under Linux too. > > The second question is what object formats does ghc > > understand and is the > > object file suffix significant? If I try elf format, this is > > accepted without > > complaint but I get a broken executable (though this could > > well be because > > my assembler has generated a broken elf file). Using coff > > format seems OK. > > The files have a ".o" suffix in both cases. > > > > FWIW, I'm using ghc 5.04.2 on Win32 with the nasm assembler. > > I'm not sure about this one - any Windows experts out there like to > comment? > > My guess is that GHCi should load COFF objects only, but other kinds of > objects might work when using the system linker (i.e. in batch mode). I've now tried a variety of formats on both win32 and Linux, the answer seems to be: On Linux using ld version 2.10.91 - aout format works. coff,as86,obj,win32,rdf formats all give the error.. foo.o: file not recognized: File format not recognized elf format gives the error.. /usr/bin/ld: foo.o: invalid section symbol index 0xfff1 (*ABS*) ingored It does indeed "ingore" the error and go on to produce an executable, but this time it works. On Win32 using ld version 2.11.90 (as shipped with ghc) --- coff and win32 formats work. as86,obj,rdf formats all give the error.. foo.o: file not recognized: File format not recognized elf format gives no error, but the executable is broken This was all with .o suffix, dunno if changing it to something else might get rid some of these errors. Don't know if any of this is any help. It seems there's something dodgy with elf format, either in nasm or ld (not sure which). Regards -- Adrian Hey ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
RE: Linking with object files
> I seem to be having some trouble doing this and have a couple > of questions.. > > The first question is how do you use --make option when doing this? > Section 4.5 of the users guide seems to contradictory to me. > > It states.. > "The command line must contain one source file or module name" This is wrong (or at least, out of date). I'll fix it. You can now specify any number of source files, module names, linkable objects and libraries on the command line in --make mode or GHCi. > and later.. > "If the program needs to be linked with additional objects (say, some > auxilliary C code), these can be specified on the command > line as usual." > > > ghc Main.hs foo.o > is OK, but whenever I try this... > > > ghc --make Main.hs foo.o > I get the error.. can't find module 'foo.o' I think you must be using a version of GHC prior to 5.04.2. This functionality was fixed in 5.04.2. > The second question is what object formats does ghc > understand and is the > object file suffix significant? If I try elf format, this is > accepted without > complaint but I get a broken executable (though this could > well be because > my assembler has generated a broken elf file). Using coff > format seems OK. > The files have a ".o" suffix in both cases. > > FWIW, I'm using ghc 5.04.2 on Win32 with the nasm assembler. I'm not sure about this one - any Windows experts out there like to comment? My guess is that GHCi should load COFF objects only, but other kinds of objects might work when using the system linker (i.e. in batch mode). Cheers, Simon ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Linking with object files
Hello, I seem to be having some trouble doing this and have a couple of questions.. The first question is how do you use --make option when doing this? Section 4.5 of the users guide seems to contradictory to me. It states.. "The command line must contain one source file or module name" and later.. "If the program needs to be linked with additional objects (say, some auxilliary C code), these can be specified on the command line as usual." > ghc Main.hs foo.o is OK, but whenever I try this... > ghc --make Main.hs foo.o I get the error.. can't find module 'foo.o' The second question is what object formats does ghc understand and is the object file suffix significant? If I try elf format, this is accepted without complaint but I get a broken executable (though this could well be because my assembler has generated a broken elf file). Using coff format seems OK. The files have a ".o" suffix in both cases. FWIW, I'm using ghc 5.04.2 on Win32 with the nasm assembler. Thanks -- Adrian Hey ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
