Re: [Haskell-cafe] Failed link to mixed-language shared object

2011-08-21 Thread David Banas 

 ghc -dynamic -o ami_test -L. -lami ami_test.o
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalArray_'
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalError_'
 collect2: ld returned 1 exit status

I was able to solve this by changing these lines:

import MarshalArray
import MarshalError

to read:

import Foreign.Marshal.Array
import Foreign.Marshal.Error

I don't understand why this worked, since the available symbols in the 2 
respective libraries appear totally similar:

dbanas@dbanas-eeepc:/usr/lib/ghc-6.12.3$ nm -g 
haskell98-1.0.1.1/libHShaskell98-1.0.1.1.a | grep 'MarshalArray'
MarshalArray__1.o:
0030 T __stginit_haskell98_MarshalArray
 T __stginit_haskell98_MarshalArray_
dbanas@dbanas-eeepc:/usr/lib/ghc-6.12.3$ nm -g -D 
haskell98-1.0.1.1/libHShaskell98-1.0.1.1-ghc6.12.3.so | grep 'MarshalArray'
2b68 T __stginit_haskell98_MarshalArray
2b24 T __stginit_haskell98_MarshalArray_dyn

dbanas@dbanas-eeepc:/usr/lib/ghc-6.12.3$ nm -g base-4.2.0.2/libHSbase-4.2.0.2.a 
| grep '__stginit_.*Foreign.*Marshal.*Array'
006c T __stginit_base_ForeignziMarshalziArray
 T __stginit_base_ForeignziMarshalziArray_
{Some output omitted.}
dbanas@dbanas-eeepc:/usr/lib/ghc-6.12.3$ nm -g -D 
base-4.2.0.2/libHSbase-4.2.0.2-ghc6.12.3.so | grep 
'__stginit_.*Foreign.*Marshal.*Array'
003dc8cc T __stginit_base_ForeignziMarshalziArray
003dc834 T __stginit_base_ForeignziMarshalziArray_dyn

Can anyone shed some light on this?

Thanks!


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Re: [Haskell-cafe] Failed link to mixed-language shared object.

2011-08-19 Thread David Banas 
On Thu, 2011-08-18 at 20:32 -0700, David Banas wrote:
 Hi all,
 
 Does this trigger recollection in anyone:
 
 dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ make
 ghc -dynamic -o ami_test -L. -lami ami_test.o
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalArray_'
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalError_'
 collect2: ld returned 1 exit status
 make: *** [ami_test] Error 1
 dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ 
 
 ?
 Know what I need to do?
 
 Thanks,
 -db
 

So, I was able to make my link errors go away, by adding `-shared' to my
command line:

dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ make
ghc -no-hs-main -shared -dynamic -o ami_test -L. -lami ami_test.o

However, when I try to execute the resultant program, I get a
segmentation fault:

dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ ./ami_test test.ami 
Segmentation fault

Tracing this shows that the `main' pointer of the program appears to be
NULL:

dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ gdb --args ./ami_test
test.ami 
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type show
copying
and show warranty for details.
This GDB was configured as i486-linux-gnu.
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/...
Reading symbols
from /home/dbanas/prj/haskell/AMIParse/trunk/ami_test...done.
(gdb) l
2   #include stdlib.h
3   #include string.h
4   //#include HsFFI.h
5   #include ami_model.h
6   
7   #define DEF_AMI_FILE test.ami
8   #define VEC_SIZE   8
9   #define MAX_LINE_LEN 256
10  
11  int main(int argc, char *argv[]) {
(gdb) b 11
Breakpoint 1 at 0x87d: file ami_test.c, line 11.
(gdb) run
Starting program: /home/dbanas/prj/haskell/AMIParse/trunk/ami_test
test.ami

Program received signal SIGSEGV, Segmentation fault.
0x0002 in ?? ()

I assume that's because of the `-shared' flag.

Any thoughts?

Thanks,
-db



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[Haskell-cafe] Failed link to mixed-language shared object.

2011-08-18 Thread David Banas 
Hi all,

Does this trigger recollection in anyone:

dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ make
ghc -dynamic -o ami_test -L. -lami ami_test.o
./libami.so: undefined reference to `__stginit_haskell98_MarshalArray_'
./libami.so: undefined reference to `__stginit_haskell98_MarshalError_'
collect2: ld returned 1 exit status
make: *** [ami_test] Error 1
dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ 

?
Know what I need to do?

Thanks,
-db



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Re: [Haskell-cafe] Failed link to mixed-language shared object.

2011-08-18 Thread Brandon Allbery 
On Thu, Aug 18, 2011 at 23:32, David Banas dba...@banasfamily.net wrote:

 Does this trigger recollection in anyone:

 dbanas@dbanas-eeepc:~/prj/haskell/AMIParse/trunk$ make
 ghc -dynamic -o ami_test -L. -lami ami_test.o
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalArray_'
 ./libami.so: undefined reference to `__stginit_haskell98_MarshalError_'


First thing to try is always --make; GHC's default behavior is, shall we
say, not optimal otherwise.  (I consider it highly broken; somewhere in
there the default is *supposedly* going to change to --make, I believe.)  If
you want to try to make it work the ugly old way, the symbol names suggest
to me that -package haskell98 would help.

-- 
brandon s allbery  allber...@gmail.com
wandering unix systems administrator (available) (412) 475-9364 vm/sms
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