linking ghc object files with mingw-g++

[johago]

Hi!

I'm trying to link ghc object files with mingw's g++/ld...
The following shows that linking ghc code with C code can be done very
easily:

$ cat > Test.hs
module Test where
foreign export ccall test :: IO ()
test = putStr "Hello from Haskell World!\n"

$ cat > main.c
#include "RtsApi.h"
#include "Test_stub.h"
#ifdef __cplusplus
extern "C"
#endif
void __stginit_Test(void);
int main(int argc, char *argv[]) {
startupHaskell(argc, argv, __stginit_Test);
test();
shutdownHaskell();
}

$ ghc -ffi -c Test.hs -o Test.o
$ gcc -c Test_stub.c -Ic:/ghc/ghc-5.04.3/include
$ gcc -c main.c -Ic:/ghc/ghc-5.04.3/include
$ ghc -no-hs-main main.o Test.o Test_stub.o
$ ./a.out
Hello from Haskell World!


The procedure above works well with gcc; g++ object files seem to depend on
a rt-lib or something, which ghc does not link into the executable by
default.

$ g++ -c main.cpp -Ic:/ghc/ghc-5.04.3/include
$ ghc -no-hs-main main.o Test.o Test_stub.o
main.o(.text+0x22):main.cpp: undefined reference to `__stginit_Test()'
main.o(.eh_frame+0x11):main.cpp: undefined reference to
`__gxx_personality_v0'




The other way round, linking the files with gcc/ld, using

$ gcc main.c Test_stub.c -Ic:/ghc/ghc-5.04.3/include \
c:/ghc/ghc-5.04.3/HSbase1.o \
c:/ghc/ghc-5.04.3/HSbase2.o \
c:/ghc/ghc-5.04.3/HSbase3.o \
c:/ghc/ghc-5.04.3/HSbase_cbits.o \
c:/ghc/ghc-5.04.3/HStext.o \
c:/ghc/ghc-5.04.3/HStext_cbits.o \
c:/ghc/ghc-5.04.3/HSlang.o \
c:/ghc/ghc-5.04.3/HSlang_cbits.o \
c:/ghc/ghc-5.04.3/HShaskell98.o \
c:/ghc/ghc-5.04.3/HSrts.o \
-lgmp Test.o -lwsock32 -lgmp -lwinmm

results in

c:/ghc/ghc-5.04.3/HSrts.o(.text+0x9ff8): multiple definition of `main'
c:\DOKUME~1\jgoetz\LOKALE~1\Temp/ccWK.o(.text+0x0):main.c: first defined
here
c:/ghc/ghc-5.04.3/HSrts.o(.text+0xa00e): undefined reference to
`__stginit_Main'
c:/ghc/ghc-5.04.3/HSrts.o(.text+0xa01f): undefined reference to
`Main_zdmain_closure'


I'm stuck...
Is there a way to merge ghc code with c++ code? What am I doing wrong?
Do you think it's possible to link ghc object code with Metrowerks and MSVC?

btw, I'm using ghc-5.04.3, windows binary distribution and current mingw g++


Thanks,
Johannes
[EMAIL PROTECTED]


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Re: linking ghc object files with mingw-g++

[johago]

Hello again!

This is gvc -v  output:

Hsc static
flags: -static -fignore-interface-pragmas -fomit-interface-pragmas -f
do-lambda-eta-expansion -flet-no-escape
*** Linker
c:\ghc\ghc-5.04.3\gcc -B"c:\ghc\ghc-5.04.3\gcc-lib/" "-v" "-o" "a.out"
"-DDONT_W
ANT_WIN32_DLL_SUPPORT" "main.o" "Test.o" "Test_stub.o" "-Lc:/ghc/ghc-5.04.3"
"-L
c:/ghc/ghc-5.04.3/gcc-lib" "-lHShaskell98" "-lHSbase" "-lHSbase_cbits"
"-lwsock3
2" "-lmsvcrt" "-lkernel32" "-luser32" "-lHSrts" "-lm" "-lgmp" "-lwinmm"
"-lwsock
32" "-u" "_GHCziBase_Izh_static_info" "-u" "_GHCziBase_Czh_static_info" "-u"
"_G
HCziFloat_Fzh_static_info" "-u" "_GHCziFloat_Dzh_static_info" "-u"
"_GHCziPtr_Pt
r_static_info" "-u" "_GHCziWord_Wzh_static_info" "-u"
"_GHCziInt_I8zh_static_inf
o" "-u" "_GHCziInt_I16zh_static_info" "-u" "_GHCziInt_I32zh_static_info"
"-u" "_
GHCziInt_I64zh_static_info" "-u" "_GHCziWord_W8zh_static_info" "-u"
"_GHCziWord_
W16zh_static_info" "-u" "_GHCziWord_W32zh_static_info" "-u"
"_GHCziWord_W64zh_st
atic_info" "-u" "_GHCziStable_StablePtr_static_info" "-u"
"_GHCziBase_Izh_con_in
fo" "-u" "_GHCziBase_Czh_con_info" "-u" "_GHCziFloat_Fzh_con_info" "-u"
"_GHCziF
loat_Dzh_con_info" "-u" "_GHCziPtr_Ptr_con_info" "-u"
"_GHCziPtr_FunPtr_con_info
" "-u" "_GHCziStable_StablePtr_con_info" "-u" "_GHCziBase_False_closure"
"-u" "_
GHCziBase_True_closure" "-u" "_GHCziPack_unpackCString_closure" "-u"
"_GHCziIOBa
se_stackOverflow_closure" "-u" "_GHCziIOBase_heapOverflow_closure" "-u"
"_GHCziI
OBase_NonTermination_closure" "-u" "_GHCziIOBase_BlockedOnDeadMVar_closure"
"-u"
 "_GHCziIOBase_Deadlock_closure" "-u"
"_GHCziWeak_runFinalizzerBatch_closure" "-
u" "___stginit_Prelude"
Reading specs from c:/ghc/ghc-5.04.3/gcc-lib/specs
gcc version 2.95.3-6 (mingw special)
$ c:/ghc/ghc-5.04.3/gcc-lib/ld.exe -Bdynamic -o a.out -u
_GHCziBase_Izh_static_
info -u _GHCziBase_Czh_static_info -u _GHCziFloat_Fzh_static_info -u
_GHCziFloa
t_Dzh_static_info -u _GHCziPtr_Ptr_static_info -u
_GHCziWord_Wzh_static_info -u
 _GHCziInt_I8zh_static_info -u _GHCziInt_I16zh_static_info -u
_GHCziInt_I32zh_s
tatic_info -u _GHCziInt_I64zh_static_info -u _GHCziWord_W8zh_static_info -u
_GH
CziWord_W16zh_static_info -u _GHCziWord_W32zh_static_info -u
_GHCziWord_W64zh_s
tatic_info -u _GHCziStable_StablePtr_static_info -u
_GHCziBase_Izh_con_info -u
_GHCziBase_Czh_con_info -u _GHCziFloat_Fzh_con_info -u
_GHCziFloat_Dzh_con_info
 -u _GHCziPtr_Ptr_con_info -u _GHCziPtr_FunPtr_con_info -u
_GHCziStable_StableP
tr_con_info -u _GHCziBase_False_closure -u _GHCziBase_True_closure -u
_GHCziPac
k_unpackCString_closure -u _GHCziIOBase_stackOverflow_closure -u
_GHCziIOBase_h
eapOverflow_closure -u _GHCziIOBase_NonTermination_closure -u
_GHCziIOBase_Bloc
kedOnDeadMVar_closure -u _GHCziIOBase_Deadlock_closure -u
_GHCziWeak_runFinaliz
zerBatch_closure -u ___stginit_Prelude
c:/ghc/ghc-5.04.3/gcc-lib/crt2.o -Lc:/gh
c/ghc-5.04.3 -Lc:/ghc/ghc-5.04.3/gcc-lib -Lc:/ghc/ghc-5.04.3/gcc-lib -L/ming
w/l
ib/gcc-lib/mingw32/2.95.3-6/../../../../mingw32/lib -L/mingw/lib/gcc-lib/min
gw3
2/2.95.3-6/../../.. main.o Test.o
Test_stub.o -lHShaskell98 -lHSbase -lHSbase_c
bits -lwsock32 -lmsvcrt -lkernel32 -luser32 -lHSrts -lm -lgmp -lwinmm -lwsoc
k32
 -lmingw32 -lgcc -lmoldname -lmsvcrt -luser32 -lkernel32 -ladvapi32 -lshell3
2 -
lmingw32 -lgcc -lmoldname -lmsvcrt
main.o(.eh_frame+0x11):main.cpp: undefined reference to
`__gxx_personality_v0'

Any hint what this __gxx_personality_v0 means?


Johannes
[EMAIL PROTECTED]



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Re: linking ghc object files with mingw-g++

[johago]

Good morning!

Thanks very much for your help... Compiling everything with cygwin c++-2 /
gcc-2 works fine for me.

>
>  | I'm trying to link ghc object files with mingw's
>  | g++/ld...
>
> We have used the g++-2 compiler that you can get with Cygwin
> and it seems to work fine. (mingw-g++ and the normal g++ did
> not work for us.)
>
> Another hint: maybe you should give "-lstdc++" as a flag to
> the final linking fase.
>
> A final hint: I have heard rumours of people changing the
> linker that GHC uses to be g++'s linker, maybe that helps in
> your case. Apparently, some C++ code requires special
> treatment at linking time, something that normal ld does not
> do.


Johannes
[EMAIL PROTECTED]

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