quantum-espresso/install/m4/x_ac_qe_f77.m4

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# Copyright (C) 2001-2016 Quantum ESPRESSO Foundation
AC_DEFUN([X_AC_QE_F77], [
# candidate f77 compilers good for all cases
try_f77="$f90"
case "$arch:$f90_flavor" in
*:pgf* )
try_f77="pgf77 $f90"
;;
ppc64-bg*:*xlf90_r )
try_f77="bgxlf_r"
;;
ppc64-bg*:*xlf90 )
try_f77="bgxlf"
;;
ppc64:*xlf* | ppc64-mn:*xlf* )
try_f77="xlf_r $f90"
;;
esac
# check serial Fortran 77 compiler (use F77 if it was set)
if test "$f77" = "" ; then f77="$try_f77" ; fi
AC_PROG_F77($f77)
f77=$F77
echo setting F77... $f77
AC_SUBST(f77)
])