Add recipe for PrBoom. It almost runs doom!

recipes/prboom/01_redox.patch

+diff -rupN prboom-2.5.0/autotools/config.sub prboom-2.5.0-redox/autotools/config.sub
+--- prboom-2.5.0/autotools/config.sub	2006-08-10 08:17:12.000000000 -0700
++++ prboom-2.5.0-redox/autotools/config.sub	2017-10-14 22:17:14.000000000 -0700
+@@ -1214,7 +1214,7 @@ case $os in
+ 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+ 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+ 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+-	      | -skyos* | -haiku* | -rdos* | -toppers*)
++	      | -skyos* | -haiku* | -rdos* | -toppers* | -redox*)
+ 	# Remember, each alternative MUST END IN *, to match a version number.
+ 		;;
+ 	-qnx*)
+diff -rupN prboom-2.5.0/configure.ac prboom-2.5.0-redox/configure.ac
+--- prboom-2.5.0/configure.ac	2008-11-09 11:12:37.000000000 -0800
++++ prboom-2.5.0-redox/configure.ac	2017-10-14 23:27:16.000000000 -0700
+@@ -85,8 +85,6 @@ if test "$cross_compiling" != "yes"; the
+ fi
+ 
+ dnl --- Header files, typedefs, structures
+-AC_TYPE_UID_T
+-AC_TYPE_SIZE_T
+ AC_DECL_SYS_SIGLIST
+ AC_HEADER_SYS_WAIT
+ AC_CHECK_HEADERS(unistd.h asm/byteorder.h sched.h)
+diff -rupN prboom-2.5.0/src/d_deh.c prboom-2.5.0-redox/src/d_deh.c
+--- prboom-2.5.0/src/d_deh.c	2008-10-11 05:10:38.000000000 -0700
++++ prboom-2.5.0-redox/src/d_deh.c	2017-10-14 23:29:00.000000000 -0700
+@@ -54,17 +54,6 @@
+ #define TRUE 1
+ #define FALSE 0
+ 
+-#ifndef HAVE_STRLWR
+-#include <ctype.h>
+-
+-static char* strlwr(char* str)
+-{
+-  char* p;
+-  for (p=str; *p; p++) *p = tolower(*p);
+-  return str;
+-}
+-#endif
+-
+ // killough 10/98: new functions, to allow processing DEH files in-memory
+ // (e.g. from wads)
+ 

recipes/prboom/recipe.sh

+VERSION=2.5.0
+TAR=https://downloads.sourceforge.net/project/prboom/prboom%20stable/$VERSION/prboom-$VERSION.tar.gz
+BUILD_DEPENDS=(sdl)
+
+function recipe_version {
+    echo "$VERSION"
+    skip=1
+}
+
+function recipe_update {
+    echo "skipping update"
+    skip=1
+}
+
+function recipe_build {
+    autoreconf -if
+    ./configure --prefix=/ --host=${HOST} --disable-sdltest --disable-gl --without-net --with-sdl-prefix="$PWD/../sysroot"
+    make 
+    skip=1
+}
+
+function recipe_test {
+    echo "skipping test"
+    skip=1
+}
+
+function recipe_clean {
+    make clean
+    skip=1
+}
+
+function recipe_stage {
+    dest="$(realpath $1)"
+    make DESTDIR="$dest" install
+    skip=1
+}

recipes/sdl/recipe.sh

+VERSION=1.2.15
+TAR=https://www.libsdl.org/release/SDL-$VERSION.tar.gz
+
+function recipe_version {
+    echo "$VERSION"
+    skip=1
+}
+
+function recipe_update {
+    echo "skipping update"
+    skip=1
+}
+
+function recipe_build {
+    ./autogen.sh
+    ./configure --prefix=/ --host=${HOST} --disable-shared --disable-pulseaudio --disable-video-x11 --disable-cdrom --disable-loadso --disable-threads --disable-timers --enable-audio --enable-dummyaudio --enable-video-orbital
+    make 
+    skip=1
+}
+
+function recipe_test {
+    echo "skipping test"
+    skip=1
+}
+
+function recipe_clean {
+    make clean
+    skip=1
+}
+
+function recipe_stage {
+    dest="$(realpath $1)"
+    make DESTDIR="$dest" install
+    skip=1
+}