1 files changed, 65 insertions, 0 deletions
diff --git a/libgfortran/mk-kinds-h.sh b/libgfortran/mk-kinds-h.sh
new file mode 100755
index 00000000000..6f292bf48a8
--- /dev/null
+++ b/libgfortran/mk-kinds-h.sh
@@ -0,0 +1,65 @@
+#!/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=""
+for k in $possible_integer_kinds; do
+  echo "  integer (kind=$k) :: i" > tmp$$.f90
+  echo "  end" >> tmp$$.f90
+  if $compile -c tmp$$.f90 > /dev/null 2>&1; then
+    s=`expr 8 \* $k`
+    largest="$k"
+
+    if [ $s -eq 128 ]; then
+      prefix="__"
+    else
+      prefix=""
+    fi
+
+    echo "typedef ${prefix}int${s}_t GFC_INTEGER_${k};"
+    echo "typedef ${prefix}uint${s}_t GFC_UINTEGER_${k};"
+    echo "typedef GFC_INTEGER_${k} GFC_LOGICAL_${k};"
+    echo "#define HAVE_GFC_INTEGER_${k}"
+  fi
+  rm -f tmp$$.*
+done
+
+echo "#define GFC_INTEGER_LARGEST GFC_INTEGER_${largest}"
+echo "#define GFC_UINTEGER_LARGEST GFC_UINTEGER_${largest}"
+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$$.f90 > /dev/null 2>&1; then
+    case $k in
+      4) ctype="float" ;;
+      8) ctype="double" ;;
+      10) ctype="long double" ;;
+      16) ctype="long double" ;;
+      *) echo "$0: Unknown type" >&2 ; exit 1 ;;
+    esac
+    largest_ctype="$ctype"
+    echo "typedef ${ctype} GFC_REAL_${k};"
+    echo "typedef complex ${ctype} GFC_COMPLEX_${k};"
+    echo "#define HAVE_GFC_REAL_${k}"
+  fi
+  rm -f tmp$$.*
+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