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Fixed bug #166 From the autoconf obsolete macros documentation: Macro: AC_CANONICAL_SYSTEM Determine the system type and set output variables to the names of the canonical system types. See section Getting the Canonical System Type, for details about the variables this macro sets. The user is encouraged to use either AC_CANONICAL_BUILD, or AC_CANONICAL_HOST, or AC_CANONICAL_TARGET, depending on the needs. Using AC_CANONICAL_TARGET is enough to run the two other macros. From the documentation for the canonical environments: case $target in i386-*-mach* | i386-*-gnu*) obj_format=aout emulation=mach bfd_gas=yes ;; i960-*-bout) obj_format=bout ;; esac Note that the above example uses $target because it's taken from a tool which can be built on some architecture ($build), run on another ($host), but yet handle data for a third architecture ($target). Such tools are usually part of a compiler suite, they generate code for a specific $target. However $target should be meaningless for most packages. If you want to base a decision on the system where your program will be run, make sure you use the $host variable.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 05:27:22 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_DisplayFormat</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SDL Library Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="Video"
HREF="video.html"><LINK
REL="PREVIOUS"
TITLE="SDL_FillRect"
HREF="sdlfillrect.html"><LINK
REL="NEXT"
TITLE="SDL_DisplayFormatAlpha"
HREF="sdldisplayformatalpha.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFF8DC"
TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
ALINK="#ff0000"
><DIV
CLASS="NAVHEADER"
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SUMMARY="Header navigation table"
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><TR
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>SDL Library Documentation</TH
></TR
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>Next</A
></TD
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><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="SDLDISPLAYFORMAT"
></A
>SDL_DisplayFormat</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2394"
></A
><H2
>Name</H2
>SDL_DisplayFormat&nbsp;--&nbsp;Convert a surface to the display format</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2397"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2398"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_Surface *<B
CLASS="FSFUNC"
>SDL_DisplayFormat</B
></CODE
>(SDL_Surface *surface);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2404"
></A
><H2
>Description</H2
><P
>This function takes a surface and copies it to a new surface of the
pixel format and colors of the video framebuffer, suitable for fast
blitting onto the display surface.  It calls
<A
HREF="sdlconvertsurface.html"
>SDL_ConvertSurface</A
></P
><P
>If you want to take advantage of hardware colorkey or alpha blit
acceleration, you should set the colorkey and alpha value before
calling this function.</P
><P
>If you want an alpha channel, see <A
HREF="sdldisplayformatalpha.html"
>SDL_DisplayFormatAlpha</A
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2411"
></A
><H2
>Return Value</H2
><P
>If the conversion fails or runs out of memory, it returns
<SPAN
CLASS="RETURNVALUE"
>NULL</SPAN
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2415"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlconvertsurface.html"
><TT
CLASS="FUNCTION"
>SDL_ConvertSurface</TT
></A
>,
<A
HREF="sdldisplayformatalpha.html"
><TT
CLASS="FUNCTION"
>SDL_DisplayFormatAlpha</TT
></A
>
<A
HREF="sdlsetalpha.html"
><TT
CLASS="FUNCTION"
>SDL_SetAlpha</TT
></A
>,
<A
HREF="sdlsetcolorkey.html"
><TT
CLASS="FUNCTION"
>SDL_SetColorKey</TT
></A
>,
<A
HREF="sdlsurface.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Surface</SPAN
></A
></P
></DIV
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><A
HREF="sdlfillrect.html"
ACCESSKEY="P"
>Prev</A
></TD
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HREF="index.html"
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>Home</A
></TD
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>Next</A
></TD
></TR
><TR
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>SDL_DisplayFormatAlpha</TD
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>