Add quakespasm, and OpenGL+SDL-based port of quake1.

ports/quakespasm/nacl.patch

+diff --git a/Quake/Makefile b/Quake/Makefile
+index 6ad9a72..840064a 100644
+--- a/Quake/Makefile
++++ b/Quake/Makefile
+@@ -14,7 +14,7 @@ USE_CODEC_MP3=1
+ USE_CODEC_VORBIS=1
+ 
+ # which library to use for mp3 decoding: mad or mpg123
+-MP3LIB=mad
++MP3LIB=mpg123
+ # which library to use for ogg decoding: vorbis or tremor
+ VORBISLIB=vorbis
+ 
+@@ -45,11 +45,19 @@ STRIP ?= strip
+ #CPUFLAGS= -mtune=k8
+ #CPUFLAGS= -march=atom
+ CPUFLAGS=
+-LDFLAGS =
++LDFLAGS ?=
+ DFLAGS ?=
+-CFLAGS ?= -Wall -Wno-trigraphs
++CFLAGS ?= -Wall
++CFLAGS += -Wno-unused-result -Wno-trigraphs
++CFLAGS += -DREGAL_NO_ENUM_GL_EXT_TEXTURE_FILTER_ANISOTROPIC -DREGAL_NO_ENUM_GL_SGIX_VERTEX_PRECLIP_HINT
+ CFLAGS += $(CPUFLAGS)
+ 
++ifneq ($(V),1)
++RUN_CC    = @echo " CC    " $@;
++RUN_CCLD  = @echo " CCLD  " $@;
++RUN_STRIP = @echo " STRIP " $@;
++endif
++
+ ifneq ($(DEBUG),0)
+ DFLAGS += -DDEBUG
+ CFLAGS += -g
+@@ -59,7 +67,7 @@ DFLAGS += -DNDEBUG
+ CFLAGS += -O2
+ CFLAGS += $(call check_gcc,-fweb,)
+ CFLAGS += $(call check_gcc,-frename-registers,)
+-cmd_strip=$(STRIP) $(1)
++cmd_strip=$(RUN_STRIP)$(STRIP) $(1)
+ define do_strip
+        $(call cmd_strip,$(1));
+ endef
+@@ -81,8 +89,8 @@ X11BASE_GUESS := $(shell \
+ X11BASE        ?= $(X11BASE_GUESS)
+ 
+ ifneq ($(X11BASE),)
+-LDFLAGS+= -L$(X11BASE)/lib
+-CFLAGS += -I$(X11BASE)/include
++LDFLAGS    += -L$(X11BASE)/lib
++CPPFLAGS   += -I$(X11BASE)/include
+ endif
+ 
+ SDL_CONFIG ?= sdl-config
+@@ -91,7 +99,7 @@ SDL_LIBS   := $(shell $(SDL_CONFIG) --libs)
+ 
+ ifeq ($(SDLNET),1)
+ NET_LIBS   :=-lSDL_net
+-CFLAGS     +=-D_USE_SDLNET
++CPPFLAGS   +=-D_USE_SDLNET
+ else
+ ifeq ($(HOST_OS),sunos)
+ NET_LIBS   :=-lsocket -lnsl -lresolv
+@@ -101,7 +109,7 @@ endif
+ endif
+ 
+ ifeq ($(USE_QS_CONBACK),1)
+-CFLAGS+= -DUSE_QS_CONBACK
++CPPFLAGS += -DUSE_QS_CONBACK
+ endif
+ 
+ ifneq ($(VORBISLIB),vorbis)
+@@ -133,18 +141,21 @@ endif
+ 
+ CODECLIBS  :=
+ ifeq ($(USE_CODEC_WAVE),1)
+-CFLAGS+= -DUSE_CODEC_WAVE
++CPPFLAGS += -DUSE_CODEC_WAVE
+ endif
+ ifeq ($(USE_CODEC_VORBIS),1)
+-CFLAGS+= -DUSE_CODEC_VORBIS $(cpp_vorbisdec)
++CPPFLAGS += -DUSE_CODEC_VORBIS $(cpp_vorbisdec)
+ CODECLIBS+= $(lib_vorbisdec)
+ endif
+ ifeq ($(USE_CODEC_MP3),1)
+-CFLAGS+= -DUSE_CODEC_MP3
++CPPFLAGS+= -DUSE_CODEC_MP3
+ CODECLIBS+= $(lib_mp3dec)
+ endif
+ 
+-COMMON_LIBS:= -lm -lGL
++COMMON_LIBS := -lm
++ifndef NACL_ARCH
++COMMON_LIBS += -lGL
++endif
+ 
+ LIBS := $(COMMON_LIBS) $(NET_LIBS) $(CODECLIBS)
+ 
+@@ -154,14 +165,14 @@ LIBS := $(COMMON_LIBS) $(NET_LIBS) $(CODECLIBS)
+ 
+ .PHONY:        clean debug release
+ 
+-DEFAULT_TARGET := quakespasm
++DEFAULT_TARGET := quakespasm$(EXEEXT)
+ 
+ # ---------------------------
+ # rules
+ # ---------------------------
+ 
+ %.o:   %.c
+-       $(CC) $(DFLAGS) -c $(CFLAGS) $(SDL_CFLAGS) -o $@ $^
++       $(RUN_CC)$(CC) $(DFLAGS) -c $(CPPFLAGS) $(CFLAGS) $(SDL_CFLAGS) -o $@ $^
+ 
+ # ----------------------------------------------------------------------------
+ # objects
+@@ -254,11 +265,11 @@ OBJS := strlcat.o \
+ # Linux build rules
+ # ------------------------
+ 
+-quakespasm:    $(OBJS)
+-       $(LINKER) $(OBJS) $(LDFLAGS) $(LIBS) $(SDL_LIBS) -o $@
++quakespasm$(EXEEXT):   $(OBJS)
++       $(RUN_CCLD)$(LINKER) $(OBJS) $(LDFLAGS) $(LIBS) $(SDL_LIBS) -o $@
+        $(call do_strip,$@)
+ 
+-release:       quakespasm
++release:       quakespasm$(EXEEXT)
+ debug:
+        $(error Use "make DEBUG=1")
+ 
+diff --git a/Quake/net_udp.c b/Quake/net_udp.c
+index 92ab2a5..04b6f9c 100644
+--- a/Quake/net_udp.c
++++ b/Quake/net_udp.c
+@@ -132,7 +132,9 @@ sys_socket_t UDP_OpenSocket (int port)
+ {
+        sys_socket_t newsocket;
+        struct sockaddr_in address;
++#ifdef FIONBIO
+        int _true = 1;
++#endif
+        int err;
+ 
+        if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET)
+@@ -142,8 +144,10 @@ sys_socket_t UDP_OpenSocket (int port)
+                return INVALID_SOCKET;
+        }
+ 
++#ifdef FIONBIO
+        if (ioctlsocket (newsocket, FIONBIO, &_true) == SOCKET_ERROR)
+                goto ErrorReturn;
++#endif
+ 
+        memset(&address, 0, sizeof(struct sockaddr_in));
+        address.sin_family = AF_INET;
+@@ -152,7 +156,9 @@ sys_socket_t UDP_OpenSocket (int port)
+        if (bind (newsocket, (struct sockaddr *)&address, sizeof(address)) == 0)
+                return newsocket;
+ 
++#ifdef FIONBIO
+ ErrorReturn:
++#endif
+        err = SOCKETERRNO;
+        Con_SafePrintf("UDP_OpenSocket: %s\n", socketerror(err));
+        UDP_CloseSocket (newsocket);
+@@ -235,7 +241,9 @@ int UDP_Connect (sys_socket_t socketid, struct qsockaddr *addr)
+ 
+ sys_socket_t UDP_CheckNewConnections (void)
+ {
++#ifdef FIONREAD
+        int             available;
++#endif
+        struct sockaddr_in      from;
+        socklen_t       fromlen;
+        char            buff[1];
+@@ -243,6 +251,7 @@ sys_socket_t UDP_CheckNewConnections (void)
+        if (net_acceptsocket == INVALID_SOCKET)
+                return INVALID_SOCKET;
+ 
++#ifdef FIONREAD
+        if (ioctl (net_acceptsocket, FIONREAD, &available) == -1)
+        {
+                int err = SOCKETERRNO;
+@@ -250,6 +259,8 @@ sys_socket_t UDP_CheckNewConnections (void)
+        }
+        if (available)
+                return net_acceptsocket;
++#endif
++
+        // quietly absorb empty packets
+        recvfrom (net_acceptsocket, buff, 0, 0, (struct sockaddr *) &from, &fromlen);
+        return INVALID_SOCKET;
+@@ -382,6 +393,7 @@ int UDP_GetSocketAddr (sys_socket_t socketid, struct qsockaddr *addr)
+ 
+ int UDP_GetNameFromAddr (struct qsockaddr *addr, char *name)
+ {
++#ifndef __native_client__
+        struct hostent *hostentry;
+ 
+        hostentry = gethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr,
+@@ -391,6 +403,7 @@ int UDP_GetNameFromAddr (struct qsockaddr *addr, char *name)
+                strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1);
+                return 0;
+        }
++#endif
+ 
+        strcpy (name, UDP_AddrToString (addr));
+        return 0;
+diff --git a/Quake/sys_sdl_unix.c b/Quake/sys_sdl_unix.c
+index fcdff11..0b211c4 100644
+--- a/Quake/sys_sdl_unix.c
++++ b/Quake/sys_sdl_unix.c
+@@ -27,6 +27,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ #include <unistd.h>
+ #include <sys/stat.h>
+ #include <sys/time.h>
++#include <sys/select.h>
+ #include <fcntl.h>
+ #include <time.h>
+