autoconf

RudraB · 03-25-2008, 10:21 PM

hello friends,
i am trying my hands on "autoconf" and i am facing a problem. autoconf is creating the configure file and configure is also working.
But i have several fortran compiler like gfortran;g95 and ifort. it is taking gfortran as fortran compiler.
i tried putting ifort before gfortran to see if that helps(idiotic move i guess) but no change in result.
this is the part of configure file:
#echo " Testing for a FORTRAN compiler"
ac_ext=f
ac_compile='$F77 -c $FFLAGS conftest.$ac_ext >&5'
ac_link='$F77 -o conftest$ac_exeext $FFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_f77_compiler_gnu
if test -n "$ac_tool_prefix"; then
for ac_prog in ifort g77 xlf f77 frt pgf77 cf77 fort77 fl32 af77 xlf90 f90 pgf90 pghpf epcf90 gfortran g95 xlf95 f95 fort ifc efc pgf95 lf95 ftn

can any1 tell me how i override gfortran by ifort?

osor · 03-26-2008, 11:32 AM

Why not:

Code:

F77="ifort" ./configure

RudraB · 03-26-2008, 11:53 PM

thats fine but what i am looking for is to pass ifort as f90 compiler as default

osor · 03-27-2008, 12:53 PM

Two things:

You want an f90 compiler, but have your configure tests for an f77 compiler. Change your macro from AC_PROG_F77 to AC_PROG_FC.
You can specify the order in which compilers are checked in the macro itself. Of course the whole point of using autoconf is not to mandate what compiler to use, but you can also reduce the list if you chose. For example, you might have:
Code:
```
AC_PROG_FC([ifort gfortran g95 xlf95 f95 fort ifc efc pgf95 lf95 ftn xlf90 f90 pgf90 pghpf epcf90])
```
This gives ifort the first priority, followed by gfortran, etc.