Re: Compilation with g77 works but not with gfortran

[Paul van Hoven <paul dot van dot hoven at googlemail dot com>]

Now I got it to work. I found that within the lib directory that 
contains the gfrotran libs exists another subdirectory called x86_64, i.e.

/usr/local/gcc-4.3.5/lib/libgfortran* (32 Bit)

and

/usr/local/gcc-4.3.5/lib/x86_64/libgfortran* (64 Bit)

And instead of linking the program like that...

$(MEX) -cxx CXX=$(CXX) CC=$(CXX) FC=$(FCC) LD=$(CXX) 
-L/usr/local/gcc-4.3.5/lib -lgfortran -lm \
       -O -output $@ $^

... I linked it like that...

$(MEX) -cxx CXX=$(CXX) CC=$(CXX) FC=$(FCC) LD=$(CXX) 
-L/usr/local/gcc-4.3.5/lib/x86_64 -lgfortran -lm \
       -O -output $@ $^

Now it works fine. Thanks for your help.



Paul van Hoven schrieb:
> Thanks for the answers. I replace lg2c with lgfortran. When I try to 
> compile now I get the following error message
>
> make clean all
> rm -f *.o lbfgsb.mexmaci64
> /usr/local/gcc-4.3.5/bin/gfortran  -O3 -x f77-cpp-input -fPIC 
> -fno-common -m64 -o solver.o -c solver.f
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o matlabexception.o 
> -c matlabexception.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o matlabscalar.o -c 
> matlabscalar.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o matlabstring.o -c 
> matlabstring.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o matlabmatrix.o -c 
> matlabmatrix.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o arrayofmatrices.o 
> -c arrayofmatrices.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o program.o -c 
> program.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o matlabprogram.o -c 
> matlabprogram.cpp
> g++ -O3 -fPIC -fno-common -fexceptions -no-cpp-precomp -arch x86_64 
> -m64 -Wall -ansi -DMATLAB_MEXFILE 
> -I/Applications/MATLAB_R2009b.app/extern/include -o lbfgsb.o -c 
> lbfgsb.cpp
> /Applications/MATLAB_R2009b.app/bin/mex -cxx CXX=g++ CC=g++ FC= LD=g++ 
> -L/usr/local/gcc-4.3.5/lib -lgfortran -lm \
>        -O -output lbfgsb.mexmaci64 solver.o matlabexception.o 
> matlabscalar.o matlabstring.o matlabmatrix.o arrayofmatrices.o 
> program.o matlabprogram.o lbfgsb.o
> ld: warning: in /usr/local/gcc-4.3.5/lib/libgfortran.dylib, file was 
> built for i386 which is not the architecture being linked (x86_64)
>
>
> Actually I build the /usr/local/gcc-4.3.5/lib/libgfortran.dylib by 
> myself some days ago. But somehow the compilation produced a 32 bit 
> library but I do need a 64 bit library. So I would like to rebuild the 
> gfortran stuff. But where do I have to configure that 
> libgfortran.dylib is compiled for a 64 bit system?
>
> I built the gfortran stuff this way:
> In "/Users/toom/Downloads/gcc-4.3.5-base/obj-gcc-4.3.5" I typed the 
> following commands:
> ../gcc-4.3.5/configure --prefix=/usr/local/gcc-4.3.5/ --languages=fortran
> make
> sudo make install
>
> and I got a gfortran in /usr/local/gcc-4.3.5
>
> So how to I tell the build process that I want a 64 bit compilation?
>
> tim schrieb:
> > Replace lg2c by lgfortran
> > Sent via BlackBerry by AT&T
> >
> > -----Original Message-----
> > From: Paul van Hoven <paul.van.hoven@googlemail.com>
> > Sender: gcc-help-owner@gcc.gnu.org
> > Date: Fri, 04 Feb 2011 18:46:53 To: <gcc-help@gcc.gnu.org>
> > Subject: Compilation with g77 works but not with gfortran
> >
> > I have an extension for matlab that i want to compile. The machine on 
> > which I compile the code has a g77-3.4 and a gfortran-4.2 compiler 
> > installed. If I set the fortran compiler in the Makefile to g77-3.4 
> > the compilation process runs through without any error messages and I 
> > can use the extension without any problems.
> >
> >
> > Compilation process with g77-3.4:
> > toom@gauss:~/Matlab/Mex/lbfgsb-for-matlab> make
> > /usr/site-local/bin/g77-3.4 -O3 -fPIC -fexceptions  -o solver.o -c 
> > solver.f
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabexception.o -c matlabexception.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabscalar.o -c matlabscalar.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabstring.o -c matlabstring.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabmatrix.o -c matlabmatrix.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > arrayofmatrices.o -c arrayofmatrices.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > program.o -c program.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabprogram.o -c matlabprogram.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o lbfgsb.o 
> > -c lbfgsb.cpp
> > /net/matlab/Matlab2009b/bin/mex -cxx CXX=/usr/site-local/bin/g++-4.2 
> > CC=/usr/site-local/bin/g++-4.2 FC= LD=/usr/site-local/bin/g++-4.2 
> > -lg2c -lm \
> >         -O -output lbfgsb.mexa64 solver.o matlabexception.o 
> > matlabscalar.o matlabstring.o matlabmatrix.o arrayofmatrices.o 
> > program.o matlabprogram.o lbfgsb.o
> > toom@gauss:~/Matlab/Mex/lbfgsb-for-matlab>
> >
> >
> >
> > But when I replace the g77-3.4 with gfortran-4.2 I get a linker error 
> > message that looks like this:
> >
> >
> >
> > Compilation process with gfortran-4.2:
> > toom@gauss:~/Matlab/Mex/lbfgsb-for-matlab> make
> > /usr/site-local/bin/gfortran-4.2 -O3 -fPIC -fexceptions  -o solver.o 
> > -c solver.f
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabexception.o -c matlabexception.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabscalar.o -c matlabscalar.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabstring.o -c matlabstring.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabmatrix.o -c matlabmatrix.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > arrayofmatrices.o -c arrayofmatrices.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > program.o -c program.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o 
> > matlabprogram.o -c matlabprogram.cpp
> > /usr/site-local/bin/g++-4.2 -O3 -fPIC -pthread  -Wall -ansi 
> > -DMATLAB_MEXFILE -I/net/matlab/Matlab2009b/extern/include -o lbfgsb.o 
> > -c lbfgsb.cpp
> > /net/matlab/Matlab2009b/bin/mex -cxx CXX=/usr/site-local/bin/g++-4.2 
> > CC=/usr/site-local/bin/g++-4.2 FC= LD=/usr/site-local/bin/g++-4.2 
> > -lg2c -lm \
> >         -O -output lbfgsb.mexa64 solver.o matlabexception.o 
> > matlabscalar.o matlabstring.o matlabmatrix.o arrayofmatrices.o 
> > program.o matlabprogram.o lbfgsb.o
> > solver.o: In function `timer_':
> > solver.f:(.text+0x17c4): undefined reference to `_gfortran_etime'
> > solver.o: In function `dcsrch_':
> > solver.f:(.text+0x1b66): undefined reference to 
> > `_gfortran_compare_string'
> > solver.f:(.text+0x1ca7): undefined reference to 
> > `_gfortran_compare_string'
> > solver.f:(.text+0x20d8): undefined reference to 
> > `_gfortran_compare_string'
> > solver.f:(.text+0x2215): undefined reference to 
> > `_gfortran_compare_string'
> > solver.o: In function `subsm_':
> > solver.f:(.text+0x2cce): undefined reference to `_gfortran_st_write'
> > solver.f:(.text+0x2ce2): undefined reference to 
> > `_gfortran_transfer_character'
> > solver.f:(.text+0x2cea): undefined reference to 
> > `_gfortran_st_write_done'
> > ...
> > ...long list of errors...
> > ...
> > solver.f:(.text+0xb31c): undefined reference to `_gfortran_st_write'
> > solver.f:(.text+0xb324): undefined reference to 
> > `_gfortran_st_write_done'
> > solver.o: In function `setulb_':
> > solver.f:(.text+0xb58c): undefined reference to 
> > `_gfortran_compare_string'
> > collect2: ld returned 1 exit status
> >
> >     mex: link of ' "lbfgsb.mexa64"' failed.
> >
> > make: *** [lbfgsb.mexa64] Error 1
> >
> >
> > I'm wondering: Why does this happen? I have another machine on which 
> > I would also like to compile the code but this machine doesn't have 
> > g77 installed.
> >