1 files changed, 12 insertions, 1 deletions
diff --git a/configure b/configure
index 4ffa3a2..4d9b566 100755
--- a/configure
+++ b/configure
@@ -24,7 +24,13 @@ compile_binary()
 
 check_define()
 {
-  $CC -E -dD $CFLAGS include/arm_features.h | grep -q $1 || return 1
+  $CC -E -dD $CFLAGS include/arm_features.h | grep -q "$1" || return 1
+  return 0
+}
+
+check_define_val()
+{
+  $CC -E -dD $CFLAGS include/arm_features.h | grep "$1" | awk '{print $3}'
   return 0
 }
 
@@ -477,6 +483,11 @@ if [ "x$need_xlib" = "xyes" ]; then
   check_xlib_headers || fail "please install libx11-dev"
 fi
 
+sizeof_long=`check_define_val __SIZEOF_LONG__`
+if [ "x$sizeof_long" = "x4" ]; then
+  CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=64"
+fi
+
 cat > $TMPC <<EOF
 void test(void *f, void *d) { fread(d, 1, 1, f); }
 EOF