--- a/configure	Fri Jul 20 15:22:48 2012 -0300
+++ b/configure	Fri Jul 20 12:57:25 2012 -0700
@@ -15553,7 +15553,7 @@
 #AX_GCC_ARCHFLAG([no], [BASE_CFLAGS="$BASE_CFLAGS $ax_cv_gcc_archflag]")
 BUILD_CFLAGS="$CFLAGS $CPPFLAGS -DUSING_GENERATED_CONFIG_H"
 # The default optimization for SDL is -O3 (Bug #31)
-if test x$orig_CFLAGS = x; then
+if test "x$orig_CFLAGS" = x; then
     BUILD_CFLAGS=`echo $BUILD_CFLAGS | sed 's/-O2/-O3/'`
 fi
 EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"
@@ -24873,133 +24873,54 @@
             { echo "$as_me:$LINENO: result: $has_pthread_spin_trylock" >&5
 echo "${ECHO_T}$has_pthread_spin_trylock" >&6; }
 
-            if test "${ac_cv_header_pthread_np_h+set}" = set; then
-  { echo "$as_me:$LINENO: checking for pthread_np.h" >&5
+            { echo "$as_me:$LINENO: checking for pthread_np.h" >&5
 echo $ECHO_N "checking for pthread_np.h... $ECHO_C" >&6; }
 if test "${ac_cv_header_pthread_np_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+ #include <pthread.h>
+
+#include <pthread_np.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_cv_header_pthread_np_h=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_header_pthread_np_h=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
 { echo "$as_me:$LINENO: result: $ac_cv_header_pthread_np_h" >&5
 echo "${ECHO_T}$ac_cv_header_pthread_np_h" >&6; }
-else
-  # Is the header compilable?
-{ echo "$as_me:$LINENO: checking pthread_np.h usability" >&5
-echo $ECHO_N "checking pthread_np.h usability... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <pthread_np.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_header_compiler=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6; }
-
-# Is the header present?
-{ echo "$as_me:$LINENO: checking pthread_np.h presence" >&5
-echo $ECHO_N "checking pthread_np.h presence... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread_np.h>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-
-rm -f conftest.err conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6; }
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: pthread_np.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: pthread_np.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: pthread_np.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: pthread_np.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: pthread_np.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: pthread_np.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: pthread_np.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: pthread_np.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: pthread_np.h: in the future, the compiler will take precedence" >&2;}
-
-    ;;
-esac
-{ echo "$as_me:$LINENO: checking for pthread_np.h" >&5
-echo $ECHO_N "checking for pthread_np.h... $ECHO_C" >&6; }
-if test "${ac_cv_header_pthread_np_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_pthread_np_h=$ac_header_preproc
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_header_pthread_np_h" >&5
-echo "${ECHO_T}$ac_cv_header_pthread_np_h" >&6; }
-
-fi
 if test $ac_cv_header_pthread_np_h = yes; then
   have_pthread_np_h=yes
+else
+  have_pthread_np_h=no
 fi
 
 

--- a/configure.in	Fri Jul 20 15:22:48 2012 -0300
+++ b/configure.in	Fri Jul 20 12:57:25 2012 -0700
@@ -84,7 +84,7 @@
 #AX_GCC_ARCHFLAG([no], [BASE_CFLAGS="$BASE_CFLAGS $ax_cv_gcc_archflag]")
 BUILD_CFLAGS="$CFLAGS $CPPFLAGS -DUSING_GENERATED_CONFIG_H"
 # The default optimization for SDL is -O3 (Bug #31)
-if test x$orig_CFLAGS = x; then
+if test "x$orig_CFLAGS" = x; then
     BUILD_CFLAGS=`echo $BUILD_CFLAGS | sed 's/-O2/-O3/'`
 fi
 EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"