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