mirror of
https://github.com/tildearrow/furnace.git
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43 lines
1.4 KiB
Bash
43 lines
1.4 KiB
Bash
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#! /bin/sh
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# Script to generate Fortran 2003 interface declarations for FFTW from
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# the fftw3.h header file.
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# This is designed so that the Fortran caller can do:
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# use, intrinsic :: iso_c_binding
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# implicit none
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# include 'fftw3.f03'
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# and then call the C FFTW functions directly, with type checking.
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echo "! Generated automatically. DO NOT EDIT!"
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echo
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# C_FFTW_R2R_KIND is determined by configure and inserted by the Makefile
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# echo " integer, parameter :: C_FFTW_R2R_KIND = @C_FFTW_R2R_KIND@"
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# Extract constants
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perl -pe 's/([A-Z0-9_]+)=([+-]?[0-9]+)/\n integer\(C_INT\), parameter :: \1 = \2\n/g' < fftw3.h | grep 'integer(C_INT)'
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perl -pe 's/#define +([A-Z0-9_]+) +\(([+-]?[0-9]+)U?\)/\n integer\(C_INT\), parameter :: \1 = \2\n/g' < fftw3.h | grep 'integer(C_INT)'
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perl -pe 'if (/#define +([A-Z0-9_]+) +\(([0-9]+)U? *<< *([0-9]+)\)/) { print "\n integer\(C_INT\), parameter :: $1 = ",$2 << $3,"\n"; }' < fftw3.h | grep 'integer(C_INT)'
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# Extract function declarations
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for p in $*; do
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if test "$p" = "d"; then p=""; fi
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echo
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cat <<EOF
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type, bind(C) :: fftw${p}_iodim
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integer(C_INT) n, is, os
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end type fftw${p}_iodim
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type, bind(C) :: fftw${p}_iodim64
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integer(C_INTPTR_T) n, is, os
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end type fftw${p}_iodim64
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EOF
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echo
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echo " interface"
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gcc -D__GNUC__=5 -D__i386__ -E fftw3.h |grep "fftw${p}_plan_dft" |tr ';' '\n' | grep -v "fftw${p}_execute(" | perl genf03.pl
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echo " end interface"
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done
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