1 files changed, 119 insertions, 0 deletions
diff --git a/libgfortran/mk-kinds-h.sh b/libgfortran/mk-kinds-h.sh
new file mode 100755
index 000000000..98a95ab54
--- /dev/null
+++ b/libgfortran/mk-kinds-h.sh
@@ -0,0 +1,119 @@
+#!/bin/sh
+LC_ALL=C
+export LC_ALL
+
+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$$.f90
+  echo "  i = 1_$k" >> tmp$$.f90
+  echo "  end" >> tmp$$.f90
+  if $compile -S tmp$$.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}"
+    echo ""
+  fi
+  rm -f tmp$$.*
+done
+
+echo "#define GFC_INTEGER_LARGEST GFC_INTEGER_${largest}"
+echo "#define GFC_UINTEGER_LARGEST GFC_UINTEGER_${largest}"
+echo "#define GFC_DEFAULT_CHAR ${smallest}"
+echo ""
+
+
+# Get the kind value for long double, so we may disambiguate it
+# from __float128.
+echo "use iso_c_binding; print *, c_long_double ; end" > tmq$$.f90
+long_double_kind=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
+			| sed 's/ *TRANSFER *//'`
+rm -f tmq$$.*
+
+
+for k in $possible_real_kinds; do
+  echo "  real (kind=$k) :: x" > tmp$$.f90
+  echo "  x = 1.0_$k" >> tmp$$.f90
+  echo "  end" >> tmp$$.f90
+  if $compile -S tmp$$.f90 > /dev/null 2>&1; then
+    case $k in
+      4) ctype="float" ; cplxtype="complex float" ; suffix="f" ;;
+      8) ctype="double" ; cplxtype="complex double" ; suffix="" ;;
+      10) ctype="long double" ; cplxtype="complex long double" ; suffix="l" ;;
+      16) if [ $long_double_kind -eq 10 ]; then
+	    ctype="__float128"
+	    cplxtype="_Complex float __attribute__((mode(TC)))"
+	    suffix="q"
+	  else
+	    ctype="long double"
+	    cplxtype="complex long double"
+	    suffix="l"
+	  fi ;;
+      *) echo "$0: Unknown type" >&2 ; exit 1 ;;
+    esac
+
+    # Check for the value of HUGE
+    echo "print *, huge(0._$k) ; end" > tmq$$.f90
+    huge=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
+		| sed 's/ *TRANSFER *//' | sed 's/_.*//'`
+    rm -f tmq$$.*
+
+    # Check for the value of DIGITS
+    echo "print *, digits(0._$k) ; end" > tmq$$.f90
+    digits=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
+		| sed 's/ *TRANSFER *//'`
+    rm -f tmq$$.*
+
+    # Check for the value of RADIX
+    echo "print *, radix(0._$k) ; end" > tmq$$.f90
+    radix=`$compile -S -fdump-parse-tree tmq$$.f90 | grep TRANSFER \
+		| sed 's/ *TRANSFER *//'`
+    rm -f tmq$$.*
+
+    # Output the information we've gathered
+    echo "typedef ${ctype} GFC_REAL_${k};"
+    echo "typedef ${cplxtype} GFC_COMPLEX_${k};"
+    echo "#define HAVE_GFC_REAL_${k}"
+    echo "#define HAVE_GFC_COMPLEX_${k}"
+    echo "#define GFC_REAL_${k}_HUGE ${huge}${suffix}"
+    echo "#define GFC_REAL_${k}_LITERAL_SUFFIX ${suffix}"
+    if [ "x$suffix" = "x" ]; then
+      echo "#define GFC_REAL_${k}_LITERAL(X) (X)"
+    else
+      echo "#define GFC_REAL_${k}_LITERAL(X) (X ## ${suffix})"
+    fi
+    echo "#define GFC_REAL_${k}_DIGITS ${digits}"
+    echo "#define GFC_REAL_${k}_RADIX ${radix}"
+    echo ""
+  fi
+  rm -f tmp$$.*
+done
+
+
+# After this, we include a header that can override some of the 
+# autodetected settings.
+echo '#include "kinds-override.h"'
+
+exit 0