SDL: 安装SDL2_mixer

SDL2_mixer

安装SDL2_mixer之前必须安装SDL2。

 

另外安装SDL2_mixer之前需要安装些其他的库.当然这些库不是必须安装的。

 

libmpg123

下载mpg123-1.26.2.tar.bz2

./configure LDFLAGS=-L/usr/local/SDL2-2.0.7/lib SDL_LIBS=-lSDL2 --enable-static --enable-shared

 

--enable-shared选项可以不指定，该选项默认是开启的。

 

make

make install

 

安装SDL2_mixer

./configure --prefix=/usr/local/SDL2_mixer-2.0.4 --with-sdl-prefix=/usr/local/SDL2-2.0.7 CPPFLAGS=-I/usr/local/SDL2-2.0.7/include/SDL2 LDFLAGS=-L/usr/local/SDL2-2.0.7/lib --disable-sdltest

 

./configure --prefix=/usr/local/SDL2_mixer-2.0.4_2 --with-sdl-prefix=/usr/local/SDL2-2.0.7 CFLAGS=-I/usr/local/SDL2-2.0.7/include/SDL2 LDFLAGS=-L/usr/local/SDL2-2.0.7/lib --disable-sdltest --enable-music-mp3 --enable-music-mp3-mad-gpl --enable-music-mp3-mad-gpl-dithering

 

记得指定--disable-sdltest，不然可能会出现如下错误：

checking for SDL - version >= 2.0.7... no

*** Could not run SDL test program, checking why...

*** The test program failed to compile or link. See the file config.log for the

*** exact error that occured. This usually means SDL was incorrectly installed

*** or that you have moved SDL since it was installed. In the latter case, you

*** may want to edit the sdl2-config script: /usr/local/SDL2-2.0.7/bin/sdl2-config

configure: error: *** SDL version 2.0.7 not found!

 

如果没安装libmpg123，会出现这些提示警告：

checking mpg123.h usability... no

checking mpg123.h presence... no

checking for mpg123.h... no

checking for mpg123_replace_reader_handle in -lmpg123... no

configure: WARNING: *** Unable to find mpg123 library (https://www.mpg123.de)

configure: WARNING: mpg123 support disabled

configure: WARNING: MP3 support disabled

 

make

在make之前，把Makefile和libtool中的-mno-cygwin都去掉，不然可能会出现以下错误：

gcc: The -mno-cygwin flag has been removed; use a mingw-targeted cross-compiler.

 

当然这里提示使用mingw-targeted cross-compiler，不过我换了之后make也会报些其他的错误：

/usr/lib/gcc/i686-w64-mingw32/4.5.3/../../../../i686-w64-mingw32/bin/ld: cannot find -lcygwin

collect2: ld returned 1 exit status

Makefile:65: recipe for target `build/libSDL2_mixer.la' failed

 

make: *** [build/libSDL2_mixer.la] Error 1

 

/usr/i686-w64-mingw32/sys-root/mingw/lib/libmingw32.a(lib32_libmingw32_a-merr.o): In function `_matherr':

/usr/src/debug/mingw64-i686-runtime-3.0b_svn5747-1/crt/merr.c:38: multiple definition of `__matherr'

/lib/libcygwin.a(t-d000433.o):fake:(.text+0x0): first defined here

collect2: ld returned 1 exit status

Makefile:68: recipe for target `build/playwave.exe' failed

make: *** [build/playwave.exe] Error 1

 

make install

 

将./build/.libs中的playmus.exe,playwave.exe拷贝到/usr/local/SDL2_mixer-2.0.4/bin目录下：

cp -rf ./build/.libs/*.exe /usr/local/SDL2_mixer-2.0.4/bin

 

将SDL2的SDL2.dll库拷贝到/usr/local/SDL2_mixer-2.0.4/bin目录下：

cp -rf /usr/local/SDL2-2.0.7/bin/SDL2.dll /usr/local/SDL2_mixer-2.0.4/bin

不然的话，运行上面两个命令的时候会报找不到SDL2.dll库。

 

由于是在Cygwin下安装，playmus.exe,playwave.exe这两个命令只能在Cygwin下运行。

 

安装后的目录结构：

写道

├─bin
│ playmus.exe
│ playwave.exe
│ SDL2.dll
│ SDL2_mixer.dll
│
├─include
│ └─SDL2
│ SDL_mixer.h
│
└─lib
│ libSDL2_mixer.a
│ libSDL2_mixer.dll.a
│ libSDL2_mixer.la
│
└─pkgconfig
SDL2_mixer.pc

 

播放wav音频

./playwave.exe h:\\yuganqingwuguan.wav

 

./playmus.exe h:\\yuganqingwuguan.wav