1 files changed, 108 insertions, 0 deletions
diff --git a/scripts/mkc_check_sizeof b/scripts/mkc_check_sizeof
new file mode 100755
index 0000000..5b35387
--- /dev/null
+++ b/scripts/mkc_check_sizeof
@@ -0,0 +1,108 @@
+#!/bin/sh
+
+############################################################
+# Copyright (c) 2009-2010 by Aleksey Cheusov
+#
+# See LICENSE file in the distribution.
+############################################################
+
+set -e
+
+LC_ALL=C
+export LC_ALL
+
+##################################################
+# options
+usage (){
+    cat <<EOF
+mkc_check_sizeof detects sizeof(type)
+by compiling a test program.
+mkc_check_sizeof doesn't run a generated executable
+and therefore is ready for cross-compiling.
+
+Usage: mkc_check_sizeof type [headers...]
+
+Examples:
+   mkc_check_sizeof 'void*'
+   mkc_check_sizeof long-long
+   mkc_check_sizeof size_t stdlib.h
+EOF
+}
+
+if test $# -eq 0; then
+    usage
+    exit 1
+fi
+if test "_$1" = '_-h'; then
+    usage
+    exit 0
+fi
+
+##################################################
+# initializing
+
+type=`echo $1 | tr ' -' '  '`
+pathpart=sizeof_`echo $type | tr '* ' 'P~'`
+shift
+
+. mkc_check_common.sh
+
+##################################################
+# test
+
+try_it (){
+    # succeedes if size is bad
+    # $1 - test size
+    # $2.. - #includes
+    sz=$1
+    shift
+
+    for f in $MKC_COMMON_HEADERS "$@"; do
+	echo "#include <$f>"
+    done > "$tmpc"
+    cat >> "$tmpc" <<EOF
+int main ()
+{
+   switch (0){
+      case sizeof ($type): break;
+      case $sz:            break;
+   }
+   return 0;
+}
+EOF
+
+    if $CC -c -o "${tmpo}" $CPPFLAGS $CFLAGS "${tmpc}" 2>"${tmperr}"; then
+    	return 0
+    else
+    	return 1
+    fi
+}
+
+check_itself (){
+    if try_it 2147483647 "$@"
+    then
+	for sz in 4 8 2 1 16 12    3 5 6 7 9 10 11 13 14 15; do
+	    if try_it $sz "$@"
+	    then
+		:
+	    else
+		echo $sz
+		return
+	    fi
+	done
+    fi
+    echo failed
+}
+
+check_and_cache "checking for sizeof ${type}" "$cache" "$@"
+
+##################################################
+# clean-ups
+
+cleanup
+
+##################################################
+# finishing
+
+printme "$ret\n" 1>&2
+echo $ret