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/pub/anarchy/dva00mkn/sun/bin/gcc -DHAVE_CONFIG_H -I. -I.
-I../../../include -g -O2 -Wall -D__ELF__ -DENABLE_DUMMYVIDEO
-DDISKAUD_SUPPORT -DUSE_DLOPEN -DESD_SUPPORT -I/pkg/esound/0.2.36/include
-I/pkg/audiofile/0.2.6/include -I/usr/openwin/include -DENABLE_X11
-DXTHREADS "-DX11_DYNAMIC=\"libX11.so.6\""
"-DX11EXT_DYNAMIC=\"libXext.so.6\"" -I./include -I./src/video -DENABLE_DGA
-DXFREE86_DGAMOUSE -DDEFAULT_DGAMOUSE -DXFREE86_VM -DXFREE86_VMGAMMA
-DXFREE86_XV -DHAVE_XINERAMA -DHAVE_XIGXME -DHAVE_OPENGL -DHAVE_OPENGL_X11
-D_REENTRANT -DSDL_USE_PTHREADS -DPTHREAD_RECURSIVE_MUTEX -DHAVE_SIGACTION
-DSUNAUDIO_SUPPORT -I../../../include -I../../../include/SDL
-I../../../src -I../../../src/main/solaris -I../../../src/audio
-I../../../src/video -I../../../src/video/Xext/extensions
-I../../../src/events -I../../../src/joystick -I../../../src/cdrom
-I../../../src/thread -I../../../src/timer -I../../../src/endian
-I../../../src/file -I../../../src/thread -MT SDL_x11dga.lo -MD -MP -MF
.deps/SDL_x11dga.Tpo -c SDL_x11dga.c  -fPIC -DPIC -o .libs/SDL_x11dga.o
[...Snipped...]
In file included from SDL_x11dyn.h:30,
                  from SDL_x11video.h:44,
                  from SDL_x11dga_c.h:23,
                  from SDL_x11dga.c:32:
/usr/openwin/include/X11/Xlibint.h:46: warning: ignoring #pragma ident
/usr/openwin/include/X11/Xlibint.h:137: error: syntax error before
'xEvent'
In file included from SDL_x11dyn.h:30,
                  from SDL_x11video.h:44,
                  from SDL_x11dga_c.h:23,
                  from SDL_x11dga.c:32:
/usr/openwin/include/X11/Xlibint.h:761: error: syntax error before
'xReply'
/usr/openwin/include/X11/Xlibint.h:836: error: syntax error before
'xReply'
/usr/openwin/include/X11/Xlibint.h:836: warning: no semicolon at end of
struct or union
/usr/openwin/include/X11/Xlibint.h:838: error: syntax error before '}'
token
/usr/openwin/include/X11/Xlibint.h:838: warning: type defaults to 'int' in
declaration of '_XAlignedBuffer'
/usr/openwin/include/X11/Xlibint.h:838: warning: data definition has no
type or storage class
/usr/openwin/include/X11/Xlibint.h:903: error: syntax error before
'xGenericReply'
/usr/openwin/include/X11/Xlibint.h:921: error: syntax error before
'xReply'
/usr/openwin/include/X11/Xlibint.h:931: error: syntax error before
'xReply'
/usr/openwin/include/X11/Xlibint.h:978: error: syntax error before
'xReply'
/usr/openwin/include/X11/Xlibint.h:986: error: syntax error before
'xEvent'
/usr/openwin/include/X11/Xlibint.h:1187: error: syntax error before
'xEvent'
/usr/openwin/include/X11/Xlibint.h:1193: error: syntax error before
'xEvent'
/usr/openwin/include/X11/Xlibint.h:1205: error: syntax error before
'xEvent'
/usr/openwin/include/X11/Xlibint.h:1211: error: syntax error before
'xEvent'
In file included from SDL_x11dyn.h:32,
                  from SDL_x11video.h:44,
                  from SDL_x11dga_c.h:23,
                  from SDL_x11dga.c:32:
../../../src/video/Xext/extensions/extutil.h:112: error: syntax error
before 'xEvent'
../../../src/video/Xext/extensions/extutil.h:119: error: syntax error
before 'xEvent'
In file included from SDL_x11video.h:44,
                  from SDL_x11dga_c.h:23,
                  from SDL_x11dga.c:32:
SDL_x11dyn.h:53: error: syntax error before 'xEvent'
SDL_x11dyn.h:55: error: syntax error before 'xEvent'
In file included from SDL_x11dyn.h:59,
                  from SDL_x11video.h:44,
                  from SDL_x11dga_c.h:23,
                  from SDL_x11dga.c:32:
SDL_x11sym.h:136: error: syntax error before 'xReply'
SDL_x11sym.h:137: error: syntax error before 'xGenericReply'
make[3]: *** [SDL_x11dga.lo] Error 1
make[3]: Leaving directory
`/import/anarchy/dva00mkn/SDL-1.2/src/video/x11'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/import/anarchy/dva00mkn/SDL-1.2/src/video'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/import/anarchy/dva00mkn/SDL-1.2/src'
make: *** [all-recursive] Error 1

----

Adding "-DNEED_EVENTS -DNEED_REPLIES" to CFLAGS makes it build.

However, it apears like x11 headers are included in the wrong order, but I'm not that familliar with development with x11 to say for sure.