diff --git a/qb/config.libs.sh b/qb/config.libs.sh
index 41c0e7a197..d5e04ce54d 100644
--- a/qb/config.libs.sh
+++ b/qb/config.libs.sh
@@ -1,3 +1,9 @@
+# Use add_opt to set HAVE_FOO variables the first time
+# example: add_opt FOO no
+#
+# Only needed when check_enabled ($2), check_platform, check_lib, check_pkgconf,
+# check_header, check_macro and check_switch are not used.
+
 check_switch '' C99 -std=gnu99 "Cannot find C99 compatible compiler."
 check_switch '' NOUNUSED -Wno-unused-result
 add_define MAKEFILE NOUNUSED "$HAVE_NOUNUSED"
@@ -59,7 +65,7 @@ if [ "$HAVE_VIDEOCORE" != "no" ]; then
       [ -d /opt/vc/lib ] && add_dirs LIBRARY /opt/vc/lib /opt/vc/lib/GL
       check_lib '' VIDEOCORE -lbcm_host bcm_host_init "-lvcos -lvchiq_arm"
    else
-      HAVE_VIDEOCORE="$HAVE_VC_TEST"
+      add_opt VIDEOCORE "$HAVE_VC_TEST"
    fi
 fi
 
@@ -115,7 +121,7 @@ check_pkgconf EXYNOS libdrm_exynos
 
 if [ "$LIBRETRO" ]; then
    die : 'Notice: Explicit libretro used, disabling dynamic libretro loading ...'
-   HAVE_DYNAMIC='no'
+   add_opt DYNAMIC no
 else
    LIBRETRO="-lretro"
 fi
@@ -144,7 +150,7 @@ fi
 check_platform 'Linux Win32' CDROM 'CD-ROM is' user
 
 if [ "$OS" = 'Win32' ]; then
-   HAVE_DYLIB=yes
+   add_opt DYLIB yes
 else
    check_lib '' DYLIB "$DYLIB" dlopen
 fi
@@ -152,8 +158,8 @@ fi
 check_lib '' NETWORKING "$SOCKETLIB" socket "" "$SOCKETHEADER"
 
 if [ "$HAVE_NETWORKING" != 'no' ]; then
-   HAVE_GETADDRINFO=auto
-   HAVE_SOCKET_LEGACY=no
+   add_opt GETADDRINFO auto
+   add_opt SOCKET_LEGACY no
 
    # WinXP+ implements getaddrinfo()
    if [ "$OS" = 'Win32' ]; then
@@ -166,9 +172,9 @@ if [ "$HAVE_NETWORKING" != 'no' ]; then
       fi
    fi
 
-   HAVE_NETWORK_CMD=yes
+   add_opt NETWORK_CMD yes
 else
-   HAVE_NETWORK_CMD=no
+   add_opt NETWORK_CMD no
 fi
 
 check_enabled NETWORKING CHEEVOS cheevos 'Networking is' false
@@ -184,9 +190,9 @@ check_lib '' MINIUPNPC '-lminiupnpc'
 check_lib '' STDIN_CMD "$CLIB" fcntl
 
 if [ "$HAVE_NETWORK_CMD" = "yes" ] || [ "$HAVE_STDIN_CMD" = "yes" ]; then
-   HAVE_COMMAND='yes'
+   add_opt COMMAND yes
 else
-   HAVE_COMMAND='no'
+   add_opt COMMAND no
 fi
 
 check_lib '' GETOPT_LONG "$CLIB" getopt_long
@@ -348,7 +354,7 @@ if [ "$HAVE_OPENGL" != 'no' ] && [ "$HAVE_OPENGLES" != 'yes' ]; then
       check_pkgconf OSMESA osmesa
    fi
 else
-   HAVE_OPENGL='no'
+   add_opt OPENGL no
 fi
 
 check_enabled EGL OPENGLES OpenGLES 'EGL is' false
@@ -505,13 +511,13 @@ if [ "$HAVE_MENU" != 'no' ]; then
       else
          if [ "$HAVE_CACA" != 'yes' ] && [ "$HAVE_SIXEL" != 'yes' ] &&
             [ "$HAVE_SDL" != 'yes' ] && [ "$HAVE_SDL2" != 'yes' ]; then
-            HAVE_RGUI=no
+            add_opt RGUI no
          fi
-         HAVE_MATERIALUI=no
-         HAVE_OZONE=no
-         HAVE_XMB=no
-         HAVE_STRIPES=no
-         HAVE_MENU_WIDGETS=no
+         add_opt MATERIALUI no
+         add_opt OZONE no
+         add_opt XMB no
+         add_opt STRIPES no
+         add_opt MENU_WIDGETS no
       fi
       die : 'Notice: Hardware rendering context not available.'
    fi
diff --git a/qb/qb.comp.sh b/qb/qb.comp.sh
index 01183b4e3e..053597a0f4 100644
--- a/qb/qb.comp.sh
+++ b/qb/qb.comp.sh
@@ -16,7 +16,7 @@ int main(void) { puts("Hai world!"); return 0; }
 EOF
 
 cc_works=0
-HAVE_CC=no
+add_opt CC no
 if [ "$CC" ]; then
 	"$CC" -o "$TEMP_EXE" "$TEMP_C" >/dev/null 2>&1 && cc_works=1
 else
@@ -53,7 +53,7 @@ int main() { std::cout << "Hai guise" << std::endl; return 0; }
 EOF
 
 cxx_works=0
-HAVE_CXX=no
+add_opt CXX no
 if [ "$CXX" ]; then
 	"$CXX" -o "$TEMP_EXE" "$TEMP_CXX" >/dev/null 2>&1 && cxx_works=1
 else
diff --git a/qb/qb.libs.sh b/qb/qb.libs.sh
index 5a256b2857..e912cb8585 100644
--- a/qb/qb.libs.sh
+++ b/qb/qb.libs.sh
@@ -16,7 +16,7 @@ SHARE_DIR="${SHARE_DIR:-${PREFIX}/share}"
 # $2 = define
 # $3 = value
 add_define()
-{ eval "${1}_DEFINES=\"\${${1}_DEFINES} $2=$3\""; }
+{ 	eval "${1}_DEFINES=\"\${${1}_DEFINES} $2=$3\""; }
 
 # add_dirs:
 # $1 = INCLUDE or LIBRARY
@@ -54,7 +54,8 @@ check_compiler()
 # $4 = feature
 # $5 = enable lib when true, disable errors with 'user' [checked only if non-empty]
 check_enabled()
-{	setval="$(eval "printf %s \"\$HAVE_$2\"")"
+{	add_opt "$2"
+	setval="$(eval "printf %s \"\$HAVE_$2\"")"
 
 	for val in $(printf %s "$1"); do
 		tmpvar="$(eval "printf %s \"\$HAVE_$val\"")"
@@ -89,7 +90,8 @@ check_enabled()
 # $3 = feature
 # $4 = enable feature when 'true', disable errors with 'user' [checked only if non-empty]
 check_platform()
-{	tmpval="$(eval "printf %s \"\$HAVE_$2\"")"
+{	add_opt "$2"
+	tmpval="$(eval "printf %s \"\$HAVE_$2\"")"
 	[ "$tmpval" = 'no' ] && return 0
 
 	error=
@@ -137,7 +139,8 @@ check_platform()
 # $7 = include directory [checked only if non-empty]
 # $8 = critical error message [checked only if non-empty]
 check_lib()
-{	tmpval="$(eval "printf %s \"\$HAVE_$2\"")"
+{	add_opt "$2"
+	tmpval="$(eval "printf %s \"\$HAVE_$2\"")"
 	[ "$tmpval" = 'no' ] && return 0
 
 	check_compiler "$1" "$4"
@@ -203,7 +206,8 @@ check_lib()
 # $4 = critical error message [checked only if non-empty]
 # $5 = force check_lib when true [checked only if non-empty, set by check_val]
 check_pkgconf()
-{	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
+{	add_opt "$1"
+	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
 	eval "TMP_$1=\$tmpval"
 	[ "$tmpval" = 'no' ] && return 0
 
@@ -263,7 +267,8 @@ check_pkgconf()
 # $1 = HAVE_$1
 # $@ = header files
 check_header()
-{	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
+{	add_opt "$1"
+	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
 	[ "$tmpval" = 'no' ] && return 0
 	rm -f -- "$TEMP_C"
 	val="$1"
@@ -292,7 +297,8 @@ check_header()
 # $2 = macro name
 # $3 = header name [included only if non-empty]
 check_macro()
-{	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
+{	add_opt "$1"
+	tmpval="$(eval "printf %s \"\$HAVE_$1\"")"
 	[ "$tmpval" = 'no' ] && return 0
 	header_include=''
 	ECHOBUF=''
@@ -328,7 +334,8 @@ EOF
 # $3 = switch
 # $4 = critical error message [checked only if non-empty]
 check_switch()
-{	check_compiler "$1" ''
+{	add_opt "$2"
+	check_compiler "$1" ''
 
 	printf %s\\n 'int main(void) { return 0; }' > "$TEMP_CODE"
 	answer='no'
diff --git a/qb/qb.make.sh b/qb/qb.make.sh
index 702d5bd8c9..6c255e3ac3 100644
--- a/qb/qb.make.sh
+++ b/qb/qb.make.sh
@@ -1,7 +1,7 @@
 # Creates config.mk and config.h.
 vars=''
 add_define MAKEFILE GLOBAL_CONFIG_DIR "$GLOBAL_CONFIG_DIR"
-set -- $(set | grep ^HAVE_)
+eval "set -- $CONFIG_OPTS"
 while [ $# -gt 0 ]; do
 	tmpvar="${1%=*}"
 	shift 1
diff --git a/qb/qb.moc.sh b/qb/qb.moc.sh
index 97bade7a17..cc64c3077b 100644
--- a/qb/qb.moc.sh
+++ b/qb/qb.moc.sh
@@ -16,7 +16,7 @@ public:
 };
 EOF
 
-HAVE_MOC=no
+add_opt MOC no
 if [ "$HAVE_QT" = "yes" ]; then
 	moc_works=0
 	if [ "$MOC" ]; then
diff --git a/qb/qb.params.sh b/qb/qb.params.sh
index 66ec134c12..dfb9922dcd 100644
--- a/qb/qb.params.sh
+++ b/qb/qb.params.sh
@@ -1,4 +1,23 @@
-print_help_option() # $1 = option $@ = description
+# add_opt
+# $1 = HAVE_$1
+# $2 = value ['auto', 'no' or 'yes', checked only if non-empty]
+add_opt()
+{	setval="$(eval "printf %s \"\$USER_$1\"")"
+	[ "${2:-}" ] && ! match "$setval" no yes && eval "HAVE_$1=\"$2\""
+
+	for opt in $(printf %s "$CONFIG_OPTS"); do
+		case "$opt" in
+			"$1") return 0 ;;
+		esac
+	done
+
+	CONFIG_OPTS="${CONFIG_OPTS} $1"
+}
+
+# print_help_option
+# $1 = option
+# $@ = description
+print_help_option()
 {
 	_opt="$1"
 	shift 1
@@ -68,12 +87,17 @@ opt_exists() # $opt is returned if exists in OPTS
 parse_input() # Parse stuff :V
 {	BUILD=''
 	OPTS=''
+	CONFIG_OPTS=''
 	config_opts='./configure'
 
 	while read -r VAR _; do
 		TMPVAR="${VAR%=*}"
 		NEWVAR="${TMPVAR##HAVE_}"
-		OPTS="$OPTS $NEWVAR"
+		OPTS="${OPTS} $NEWVAR"
+		case "$NEWVAR" in
+			C89_*|CXX_*) : ;;
+			*) CONFIG_OPTS="${CONFIG_OPTS} $NEWVAR" ;;
+		esac
 		eval "USER_$NEWVAR=auto"
 	done < 'qb/config.params.sh'
 	#OPTS contains all available options in config.params.sh - used to speedup