Hello
I can't link with a library any longer, after switching from ghc5 to
ghc6.2. I've recompiled the library with the new compiler version, so
that's not the problem.
With GHC5: everything is fine:
~/src/hsunix $ ghc --version
The Glorious Glasgow Haskell Compilation System, version 5.04.2
~/src/hsunix $ make clean
...
~/src/hsunix $ make build/test0
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -c -o build/HsUnixArgs.o src/lib/HsUnixArgs.hs
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -c -o build/HsUnixShell.o src/lib/HsUnixShell.hs
...
ar cqs build/libhsunix.a build/HsUnixArgs.o build/HsUnix.o build/HsUnixMisc.o build/HsUnixPaths.o build/HsUnixShell.o build/HsUnixCommands.o build/HsUnixProcErr.o build/hsunix.o
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -ohi build/test0.hi -c -o build/test0.o src/test/test0.hs
ghc -o build/test0 build/test0.o -odir build `src/lib/hsunix-config --local --libs`
~/src/hsunix $ src/lib/hsunix-config --local --libs
build/libhsunix.a -syslib lang -syslib posix -syslib text -syslib util
With GHC6, I get errors about undefined symbols. It are symbols which
are defined in the library (libhsunix.a):
~/src/hsunix $ ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.2
~/src/hsunix $ make clean
...
~/src/hsunix $ make build/test0
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -c -o build/HsUnixArgs.o src/lib/HsUnixArgs.hs
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -c -o build/HsUnixShell.o src/lib/HsUnixShell.hs
...
ar cqs build/libhsunix.a build/HsUnixArgs.o build/HsUnix.o build/HsUnixMisc.o build/HsUnixPaths.o build/HsUnixShell.o build/HsUnixCommands.o build/HsUnixProcErr.o build/hsunix.o
ghc `src/lib/hsunix-config --local --cflags` -hidir build -odir build -ibuild -ohi build/test0.hi -c -o build/test0.o src/test/test0.hs
ghc -o build/test0 build/test0.o -odir build `src/lib/hsunix-config --local --libs`
build/test0.o(.text+0x25): In function `__stginit_Main_':
: undefined reference to `__stginit_HsUnix_'
build/test0.o(.text+0xec): In function `Main_main_srt':
: undefined reference to `HsUnix_mainwrapper_closure'
build/test0.o(.text+0x151): In function `Main_main_entry':
: undefined reference to `HsUnix_mainwrapper_closure'
collect2: ld returned 1 exit status
make: *** [build/test0] Error 1
rm build/test0.o
Oddly, the problem does not occur when I directly pass the haskell source
file to the compiler instead of the object file which is created from it:
~/src/hsunix $ ghc -o build/test0 src/test/test0.hs -odir build `src/lib/hsunix-config --local --libs` `src/lib/hsunix-config --local --cflags`
^^^^^^^^^^^^^^^^^
instead of build/test0.o which is created from it
(succeeds)
Does anyone have any idea of what's wrong? I find this especially strange,
because it works with GHC5.
Bye,
V.W.
--
Volker Wysk