gcc/libgfortran/mk-kinds-h.sh

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#!/bin/sh
compile="$1"
# Possible types must be listed in ascending order
possible_integer_kinds="1 2 4 8 16"
possible_real_kinds="4 8 10 16"
largest=""
smallest=""
for k in $possible_integer_kinds; do
echo " integer (kind=$k) :: i" > tmp$$.f90
echo " end" >> tmp$$.f90
if $compile -c tmp$$.f90 > /dev/null 2>&1; then
s=`expr 8 \* $k`
largest="$k"
if [ $s -eq 128 ]; then
prefix="__"
else
prefix=""
fi
if [ "$smallest" = "" ]; then
smallest="$k"
fi
echo "typedef ${prefix}int${s}_t GFC_INTEGER_${k};"
echo "typedef ${prefix}uint${s}_t GFC_UINTEGER_${k};"
echo "typedef GFC_INTEGER_${k} GFC_LOGICAL_${k};"
echo "#define HAVE_GFC_LOGICAL_${k}"
echo "#define HAVE_GFC_INTEGER_${k}"
fi
rm -f tmp$$.*
done
echo "#define GFC_INTEGER_LARGEST GFC_INTEGER_${largest}"
echo "#define GFC_UINTEGER_LARGEST GFC_UINTEGER_${largest}"
echo "#define GFC_DEFAULT_CHAR ${smallest}"
echo ""
largest_ctype=""
for k in $possible_real_kinds; do
echo " real (kind=$k) :: x" > tmp$$.f90
echo " end" >> tmp$$.f90
if $compile -c tmp$$.f90 > /dev/null 2>&1; then
case $k in
4) ctype="float" ;;
8) ctype="double" ;;
10) ctype="long double" ;;
16) ctype="long double" ;;
*) echo "$0: Unknown type" >&2 ; exit 1 ;;
esac
largest_ctype="$ctype"
echo "typedef ${ctype} GFC_REAL_${k};"
echo "typedef complex ${ctype} GFC_COMPLEX_${k};"
echo "#define HAVE_GFC_REAL_${k}"
echo "#define HAVE_GFC_COMPLEX_${k}"
fi
rm -f tmp$$.*
done
case $largest_ctype in
float) echo "#define GFC_REAL_LARGEST_FORMAT \"\"" ;;
double) echo "#define GFC_REAL_LARGEST_FORMAT \"l\"" ;;
"long double") echo "#define GFC_REAL_LARGEST_FORMAT \"L\"" ;;
*) echo "$0: Unknown type" >&2 ; exit 1 ;;
esac
echo "#define GFC_REAL_LARGEST $largest_ctype"
exit 0