Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -25,11 +25,11 @@
 dnl Used to disable checking for -pedantic on some platforms where it's broken
 check_pedantic="yes"
 
 case "$host" in
 	arm-*-riscos*)
-		AS_IF([test x"$OBJCFLAGS" != x""], [
+		AS_IF([test x"$OBJCFLAGS" = x""], [
 			OBJCFLAGS="-O2 -g"
 		])
 		flags="-mfloat-abi=softfp -mfpu=vfp -mlibscl"
 		ASFLAGS="$ASFLAGS -mfloat-abi=softfp -mfpu=vfp"
 		OBJCFLAGS="$OBJCFLAGS $flags"
@@ -41,11 +41,11 @@
 		enable_sockets="no"
 		enable_files="no"
 		ac_cv_snprintf_useful_ret="yes"
 		;;
 	m68k-*-amigaos*)
-		AS_IF([test x"$OBJCFLAGS" != x""], [
+		AS_IF([test x"$OBJCFLAGS" = x""], [
 			OBJCFLAGS="-O0 -g"
 		])
 		OBJCFLAGS="$OBJCFLAGS -noixemul"
 		OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS -noixemul"
 		LDFLAGS="$LDFLAGS -noixemul"
@@ -73,11 +73,11 @@
 		enable_shared="no"
 		enable_threads="no"
 		;;
 	*-morphos*)
 		AS_IF([test x"$with_ixemul" != x"yes"], [
-			AS_IF([test x"$OBJCFLAGS" != x""], [
+			AS_IF([test x"$OBJCFLAGS" = x""], [
 				OBJCFLAGS="-O2 -g"
 			])
 			OBJCFLAGS="$OBJCFLAGS -noixemul"
 			OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS -noixemul"
 			LDFLAGS="$LDFLAGS -noixemul"
@@ -115,11 +115,11 @@
 		AS_IF([test x"$DEVKITPSP" = x""], [
 			AC_MSG_ERROR(
 				[DEVKITPSP is not set! Please set DEVKITPSP.])
 		])
 
-		AS_IF([test x"$OBJCFLAGS" != x""], [
+		AS_IF([test x"$OBJCFLAGS" = x""], [
 			OBJCFLAGS="-O2"
 		])
 		OBJCFLAGS="$OBJCFLAGS -G0"
 		OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS -G0"
 		CPPFLAGS="$CPPFLAGS -I$DEVKITPSP/psp/sdk/include"