[mpich-discuss] mpich compilation issue

[akshar bhosale]

Hi,
thank you for reply.

I tried to install it make it using following options now and i get
following error with undefined reference to main. options given while
configuring the same are :
export F90=fortran;F90FLAGS="-ff2c".
but error of undefined reference to main is observed in every executable
like :

./mpicc -v
mpicc for 1.2.7 (release) of : 2005/06/22 16:33:49
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --disable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)
 /usr/libexec/gcc/x86_64-redhat-linux/4.1.2/collect2 --eh-frame-hdr -m
elf_x86_64 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbegin.o
-L/scratch1/np_cs/trial2/build/lib
-L/opt/intel/mkl/10.2.2.025/lib/em64t-L/opt/intel/mkl/
10.2.2.025/lib/em64t -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
-L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
-L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64 -lmpich -lpthread -lrt -lgcc --as-needed -lgcc_s
--no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtend.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crtn.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o: In function
`_start':
(.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status

./mpif90 -v
mpif90 for 1.2.7 (release) of : 2005/06/22 16:33:49
Driving: gfortran -L/scratch1/np_cs/trial2/build/lib -v -lmpichf90 -lmpich
-lpthread -lrt -lgfortranbegin -lgfortran -lm -shared-libgcc
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --disable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)
 /usr/libexec/gcc/x86_64-redhat-linux/4.1.2/collect2 --eh-frame-hdr -m
elf_x86_64 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbegin.o
-L/scratch1/np_cs/trial2/build/lib
-L/opt/intel/mkl/10.2.2.025/lib/em64t-L/opt/intel/mkl/
10.2.2.025/lib/em64t -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
-L/usr/lib/gcc/x86_64-redhat-linux/4.1.2
-L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64 -lmpichf90 -lmpich -lpthread -lrt -lgfortranbegin
-lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtend.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crtn.o
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/libgfortranbegin.a(fmain.o): In
function `main':
(.text+0xa): undefined reference to `MAIN__'
collect2: ld returned 1 exit status

Am i missing somethin?
thank you
-akshar

On Mon, Sep 12, 2011 at 1:24 AM, William Gropp <wgropp at illinois.edu> wrote:

> You can use gfortran for F77 and F90.  If your requirement is to use
> gfortran for F77 and a different fortran for F90, then they will need to use
> consistent linker names, calling conventions, data sizes, and libraries.
>  The config.log file will have details on why configure decided that the
> Fortran 77 and Fortran 90 compilers were not compatible.
>
> Bill
>
>
> On Sep 9, 2011, at 4:28 PM, akshar bhosale wrote:
>
>  hi,
>> we have requirement of mpich-1.2.7 with gfortran. We have fiven flags as :
>> CC=gcc;F90=fortran;F77=**gfortran; and tried to configure, it throws
>> error as configure: error: Fortran 90 and Fortran 77 compilers are not
>> compatible..
>> We have to do it using gfortran only. os is rhel5.1 64 bit
>> what extran flags settings we have to do?
>>
>> -akshar
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>
> William Gropp
> Director, Parallel Computing Institute
> Deputy Director for Research
> Institute for Advanced Computing Applications and Technologies
> Paul and Cynthia Saylor Professor of Computer Science
> University of Illinois Urbana-Champaign
>
>
>
>
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