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Updates for building on Windows CE using mingw32ce cross compiler: http://sourceforge.net/mailarchive/forum.php?thread_name 0703291652.38437.jwalt%40garni.ch&forum_name=cegcc-devel Hi! I just managed to compile SDL for Windows CE using the "mingw32ce" configuration of http://cegcc.sourceforge.net. Test programs work as expected (except for those using signals -- no POSIX on mingw32ce), and I didn't yet encounter any problem. While it was a pain to get everything compiled and running, the changes to SDL are actually quite small (see attached SDL-ce.diff). Unfortunately, the win32 headers shipped with cegcc are not 100% correct, and it feels quite messy to work around them in SDL code, so those headers will also need to be patched. (Attachment: win32api-ce.diff) Since I had to apply the libtool patch from the cegcc patch, I have also ad ded my copy of aclocal.m4 for SDL. I had to modify the cegcc libtool patch to use "lt_cv_deplibs_check_method=pass_all" for mingw32ce, otherwise libtool would not recognize the import libraries as valid for dynamic linking. All these changes should not affect non-WinCE builds, so they could be included in mainline SDL. If you need some docs, you can use this description for a cross-compilation README: 1) get cegcc from http://cegcc.sourceforge.net 2) build and install the "mingw32ce" variant (see cegcc installation docs) 3) patch w32api-headers (if not yet included in cegcc) 4) setup environment (customize the first three lines as you like): PREFIX=/opt/mingw32ce TARGET=arm-wince-mingw32ce BUILD=`uname -m`-pc-linux-gnu export PATH="$PREFIX/bin:$PREFIX/$TARGET/bin:$PREFIX/local/bin:$PATH" export CFLAGS="${CFLAGS:- -O2 -g} -I$PREFIX/local/include" export CPPFLAGS="${CPPFLAGS:- -O2 -g} -I$PREFIX/local/include" export CXXFLAGS="${CXXFLAGS:- -O2 -g} -I$PREFIX/local/include" export LDFLAGS="${LDFLAGS:- -O2 -g} -L$PREFIX/local/lib" export HOST_CC="gcc" export CC="$PREFIX/bin/$TARGET-gcc" export CXX="$PREFIX/bin/$TARGET-g++" export LD="$PREFIX/bin/$TARGET-ld" export AS="$PREFIX/bin/$TARGET-as" export AR="$PREFIX/bin/$TARGET-ar" export RANLIB="$PREFIX/bin/$TARGET-ranlib" export CONFIG_SHELL="/bin/sh" 5) build and install ./configure --target=$TARGET --host=$TARGET --build=$BUILD make make install 6) use (4) and (5) for any SDL-using software you want to cross-compile 7) copy $PREFIX/local/bin/SDL-1-2-0.dll into your executable directory on the WinCE machine
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Jan 2008 06:19:07 +0000
parents 355632dca928
children
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>SDL_SetTimer</TITLE
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><H1
><A
NAME="SDLSETTIMER"
></A
>SDL_SetTimer</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN8557"
></A
><H2
>Name</H2
>SDL_SetTimer&nbsp;--&nbsp;Set a callback to run after the specified number of milliseconds has
elapsed.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8560"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN8561"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_SetTimer</B
></CODE
>(Uint32 interval, SDL_TimerCallback callback);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SDLTIMERCALLBACK"
></A
><H2
>Callback</H2
><P
>/* Function prototype for the timer callback function */
typedef Uint32 (*SDL_TimerCallback)(Uint32 interval);</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8570"
></A
><H2
>Description</H2
><P
>Set a callback to run after the specified number of milliseconds has
elapsed. The callback function is passed the current timer interval
and returns the next timer interval.  If the returned value is the
same as the one passed in, the periodic alarm continues, otherwise a
new alarm is scheduled.</P
><P
>To cancel a currently running timer, call
<TT
CLASS="FUNCTION"
>SDL_SetTimer(0, NULL);</TT
></P
><P
>The timer callback function may run in a different thread than your
main constant, and so shouldn't call any functions from within itself.</P
><P
>The maximum resolution of this timer is 10 ms, which means that if
you request a 16 ms timer, your callback will run approximately 20 ms
later on an unloaded system.  If you wanted to set a flag signaling
a frame update at 30 frames per second (every 33 ms), you might set a
timer for 30 ms (see example below).</P
><P
>If you use this function, you need to pass <TT
CLASS="LITERAL"
>SDL_INIT_TIMER</TT
>
to <TT
CLASS="FUNCTION"
>SDL_Init()</TT
>.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>This function is kept for compatibility but has been superseded
by the new timer functions
<A
HREF="sdladdtimer.html"
>SDL_AddTimer</A
> and
<A
HREF="sdlremovetimer.html"
>SDL_RemoveTimer</A
> which support
multiple timers.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8584"
></A
><H2
>Examples</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>SDL_SetTimer((33/10)*10, my_callback);</PRE
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8588"
></A
><H2
>See Also</H2
><P
><A
HREF="sdladdtimer.html"
><TT
CLASS="FUNCTION"
>SDL_AddTimer</TT
></A
></P
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