1.1 --- a/acinclude.m4	Fri Feb 10 19:26:10 2012 +1000
     1.2 +++ b/acinclude.m4	Sun Feb 12 16:30:26 2012 +1000
     1.3 @@ -4,6 +4,8 @@
     1.4  # -----------------------
     1.5  AC_DEFUN([AC_CHECK_FASTCALL], [
     1.6  AC_MSG_CHECKING([support for fastcall calling conventions]);
     1.7 +save_CFLAGS="$CFLAGS"
     1.8 +CFLAGS="-Werror $save_CFLAGS"
     1.9  AC_RUN_IFELSE([
    1.10    AC_LANG_SOURCE([[
    1.11  int __attribute__((regparm(3))) foo(int a, int b) { return a+b; }
    1.12 @@ -18,6 +20,7 @@
    1.13     $2 ], [
    1.14        AC_MSG_RESULT([no])
    1.15     $2 ])
    1.16 +CFLAGS="$save_CFLAGS"
    1.17  ])
    1.18  
    1.19  # AC_CHECK_FORCEINLINE([if-ok],[if-notok])

     2.1 --- a/configure	Fri Feb 10 19:26:10 2012 +1000
     2.2 +++ b/configure	Sun Feb 12 16:30:26 2012 +1000
     2.3 @@ -9751,6 +9751,8 @@
     2.4  
     2.5  { echo "$as_me:$LINENO: checking support for fastcall calling conventions" >&5
     2.6  echo $ECHO_N "checking support for fastcall calling conventions... $ECHO_C" >&6; };
     2.7 +save_CFLAGS="$CFLAGS"
     2.8 +CFLAGS="-Werror $save_CFLAGS"
     2.9  if test "$cross_compiling" = yes; then
    2.10  
    2.11        { echo "$as_me:$LINENO: result: no" >&5
    2.12 @@ -9817,6 +9819,7 @@
    2.13  fi
    2.14  
    2.15  
    2.16 +CFLAGS="$save_CFLAGS"
    2.17  
    2.18  
    2.19  { echo "$as_me:$LINENO: checking support for force inlining" >&5