llvm dev - Nov 2008 - [LLVMdev] llvm-gfortran gives errors on AMD64-Ubuntu

Hi Duncan,

Thanks for your answers. Compiling .s file is OK after adding the -lgfortran
-lgfortranbegin.

I replace my Ubuntu 8.04 and by Ubuntu 8.10. And I checked all new packages
installed by 'apt-get' are amd64 version. However after compiling the
llvm-gfortran, I got the same error.

Here is my configure arguments
$ ../llvm-gcc4.2-2.3.source/configure --prefix=`pwd`/../install
--program-prefix=llvm- \
	--disable-shared --disable-multilib \
	--enable-llvm=/llvm/llvm-obj --enable-languages=c,c++,fortran
$ make LLVM_VERSION_INFO=2.3

Without any one of --disable-shared, --disable-multilib, the make will fail.

Could you give me the arguments you used for the 'configure', and the
output
of the 'configure'? I want to check whether my OS misses some packages
that
needed by llvm-gcc. I feel the libgfortran built in my OS may incorrect, due
to different configure settings.

BTW, I check the libgfortran.a in my system: 
After make, the new generated libgfortran.a:
-rw-r--r-- 1 jli127 jli127 1513500 2008-11-06 19:17
/llvm/llvm-gcc/install/lib64/libgfortran.a
-rw-r--r-- 1 jli127 jli127 1513500 2008-11-06 19:16
/llvm/llvm-gcc/obj/x86_64-unknown-linux-gnu/libgfortran/.libs/libgfortran.a

It's different to the system original libgfortran.a: 
-rw-r--r-- 1 root   root   1854562 2008-10-25 01:40
/usr/lib/gcc/x86_64-linux-gnu/4.3/libgfortran.a

If replace it by system 'libgfortran.a', the error became:
hello.o: In function `MAIN__':
(.text+0x1e): undefined reference to `_gfortran_set_std'
collect2: ld returned 1 exit status

Thanks,
Jun    
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Hi Jun,
> Without any one of --disable-shared, --disable-multilib, the make will
fail.
This is correct. I fixed multilib & PIC codegen for x86-64 only
recently, so this will go to 2.4 release. Please carefully read
README.LLVM file
> It's different to the system original libgfortran.a:
Yes, surely, because they were compiled from different sources with
different compilers!

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

Hi,
> Here is my configure arguments
> $ ../llvm-gcc4.2-2.3.source/configure --prefix=`pwd`/../install
> --program-prefix=llvm- \
> 	--disable-shared --disable-multilib \
> 	--enable-llvm=/llvm/llvm-obj --enable-languages=c,c++,fortran
this looks ok to me.  It's essentially the same as what I use.
Try with 2.4 (about to be released).  I'm not sure I ever tried
to build the 2.3 version of llvm-gfortran on x86-64.
> If replace it by system 'libgfortran.a', the error became:
> hello.o: In function `MAIN__':
> (.text+0x1e): undefined reference to `_gfortran_set_std'
> collect2: ld returned 1 exit status
Probably your system gcc version is different to 4.2.  Like gcc 4.2,
llvm-gcc generates a call to gfortran_set_std in MAIN__.  This function
is defined in the gcc 4.2 version of libgfortran, but apparently not in
other gcc versions.  [I think ubuntu 8.10 uses gcc 4.3].

Ciao,

Duncan.

Hi Duncan,

I tried the llvm-2.4 and llvm-gcc-4.2-2.4, but I got same error. :(
It seems is the GCC's problem. Ubuntu 8.10 does use gcc 4.3.  Could you tell
me what version of gcc you are using? Could you send me your configure
result for llvm and llvm-gcc? I suspect some packages may be missing since I
have a new installed OS. Thanks.

Jun
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