1#!/bin/sh
2LC_ALL=C
3export LC_ALL
4
5if test "$#" -ne 3; then
6  echo "Usage $0 int_kinds real_kinds compile"
7  exit 1
8fi
9
10# Possible kinds must be listed in ascending order
11possible_integer_kinds="$1"
12possible_real_kinds="$2"
13compile="$3"
14
15largest=""
16smallest=""
17for k in $possible_integer_kinds; do
18  echo "  integer (kind=$k) :: i" > tmp$$.f90
19  echo "  i = 1_$k" >> tmp$$.f90
20  echo "  end" >> tmp$$.f90
21  if $compile -S tmp$$.f90 > /dev/null 2>&1; then
22    s=`expr 8 \* $k`
23    largest="$k"
24
25    if [ $s -eq 128 ]; then
26      prefix="__"
27    else
28      prefix=""
29    fi
30
31    if [ "$smallest" = "" ]; then
32	smallest="$k"
33    fi
34
35    echo "typedef ${prefix}int${s}_t GFC_INTEGER_${k};"
36    echo "typedef ${prefix}uint${s}_t GFC_UINTEGER_${k};"
37    echo "typedef GFC_INTEGER_${k} GFC_LOGICAL_${k};"
38    echo "#define HAVE_GFC_LOGICAL_${k}"
39    echo "#define HAVE_GFC_INTEGER_${k}"
40    echo ""
41  fi
42  rm -f tmp$$.*
43done
44
45echo "#define GFC_INTEGER_LARGEST GFC_INTEGER_${largest}"
46echo "#define GFC_UINTEGER_LARGEST GFC_UINTEGER_${largest}"
47echo "#define GFC_DEFAULT_CHAR ${smallest}"
48echo ""
49
50
51# Get the kind value for long double, so we may disambiguate it
52# from __float128.
53echo "use iso_c_binding; print *, c_long_double ; end" > tmq$$.f90
54long_double_kind=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
55			| sed 's/ *TRANSFER *//'`
56rm -f tmq$$.*
57
58
59for k in $possible_real_kinds; do
60  echo "  real (kind=$k) :: x" > tmp$$.f90
61  echo "  x = 1.0_$k" >> tmp$$.f90
62  echo "  end" >> tmp$$.f90
63  if $compile -S tmp$$.f90 > /dev/null 2>&1; then
64    case $k in
65      4) ctype="float" ; cplxtype="complex float" ; suffix="f" ;;
66      8) ctype="double" ; cplxtype="complex double" ; suffix="" ;;
67      # If we have a REAL(KIND=10), it is always long double
68      10) ctype="long double" ; cplxtype="complex long double" ; suffix="l" ;;
69      # If we have a REAL(KIND=16), it is either long double or __float128
70      16) if [ $long_double_kind -ne 16 ]; then
71	    ctype="__float128"
72	    cplxtype="_Complex float __attribute__((mode(TC)))"
73	    suffix="q"
74	    echo "#define GFC_REAL_16_IS_FLOAT128"
75	  else
76	    ctype="long double"
77	    cplxtype="complex long double"
78	    suffix="l"
79	    echo "#define GFC_REAL_16_IS_LONG_DOUBLE"
80	  fi ;;
81      *) echo "$0: Unknown type" >&2 ; exit 1 ;;
82    esac
83
84    # Check for the value of HUGE
85    echo "print *, huge(0._$k) ; end" > tmq$$.f90
86    huge=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
87		| sed 's/ *TRANSFER *//' | sed 's/_.*//'`
88    rm -f tmq$$.*
89
90    # Check for the value of TINY
91    echo "print *, tiny(0._$k) ; end" > tmq$$.f90
92    tiny=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
93		| sed 's/ *TRANSFER *//' | sed 's/_.*//'`
94    rm -f tmq$$.*
95
96    # Check for the value of DIGITS
97    echo "print *, digits(0._$k) ; end" > tmq$$.f90
98    digits=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
99		| sed 's/ *TRANSFER *//'`
100    rm -f tmq$$.*
101
102    # Check for the value of RADIX
103    echo "print *, radix(0._$k) ; end" > tmq$$.f90
104    radix=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
105		| sed 's/ *TRANSFER *//'`
106    rm -f tmq$$.*
107
108    # Output the information we've gathered
109    echo "typedef ${ctype} GFC_REAL_${k};"
110    echo "typedef ${cplxtype} GFC_COMPLEX_${k};"
111    echo "#define HAVE_GFC_REAL_${k}"
112    echo "#define HAVE_GFC_COMPLEX_${k}"
113    echo "#define GFC_REAL_${k}_HUGE ${huge}${suffix}"
114    echo "#define GFC_REAL_${k}_TINY ${tiny}${suffix}"
115    echo "#define GFC_REAL_${k}_LITERAL_SUFFIX ${suffix}"
116    if [ "x$suffix" = "x" ]; then
117      echo "#define GFC_REAL_${k}_LITERAL(X) (X)"
118    else
119      echo "#define GFC_REAL_${k}_LITERAL(X) (X ## ${suffix})"
120    fi
121    echo "#define GFC_REAL_${k}_DIGITS ${digits}"
122    echo "#define GFC_REAL_${k}_RADIX ${radix}"
123    echo ""
124  fi
125  rm -f tmp$$.*
126done
127
128
129# After this, we include a header that can override some of the
130# autodetected settings.
131echo '#include "kinds-override.h"'
132
133exit 0
134