apply patch + dependencies

recipes/sdl_gfx/01_redox.patch

+--- source/config.sub	2013-10-27 23:04:13.000000000 +0100
++++ build/config.sub	2019-08-13 10:13:07.072063540 +0200
+@@ -125,7 +125,7 @@ case $maybe_os in
+   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+   linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+   knetbsd*-gnu* | netbsd*-gnu* | \
+-  kopensolaris*-gnu* | \
++  kopensolaris*-gnu* | redox* | \
+   storm-chaos* | os2-emx* | rtmk-nova*)
+     os=-$maybe_os
+     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+@@ -1346,7 +1346,7 @@ case $os in
+ 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+ 	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+ 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+-	      | -sym* | -kopensolaris* \
++	      | -sym* | -kopensolaris* | -redox* \
+ 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+ 	      | -aos* | -aros* \
+ 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \

recipes/sdl_gfx/recipe.sh

@@ -17,7 +17,7 @@ function recipe_build {
     export CFLAGS="-I$sysroot/include"
     export LDFLAGS="-L$sysroot/lib"
     ./autogen.sh
-    ./configure --prefix=/ --build=${BUILD} --host=${HOST} --disable-shared --disable-sdltest
+    ./configure --prefix=/ --build=${BUILD} --host=${HOST} --disable-shared
     make -j"$(nproc)"
     skip=1
 }