On Mon, 1 Jan 2007, Steven G. Johnson wrote:
If you configure FFTW with gfortran (e.g. if gfortran is present but not
g77), then FFTW will be callable from gfortran and most other Fortran
compilers, but not from g77.
Actually, a workaround is to configure FFTW with
./configure F77="gfortran -ff2c" ...other args...
In this case FFTW will detect the g77 linker format and will produce
wrappers callable by both g77 *and* by gfortran (without -ff2c), just as
it does for configuring with g77. This should be what you want.
In any case, this is not urgent as the current FFTW 3.x libraries in
Debian should already be gfortran-callable. It is just a matter of
reducing the dependence of the build machines on older software.
Steven
PS. The other differences in calling convention between g77 and gfortran
are, thankfully, irrelevant to FFTW.
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