mips平台交叉编译live555

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本文介绍如何在MIPS平台上编译live555源码，并解决编译过程中遇到的locale相关函数缺失问题。通过修改配置文件config.mips并添加-DLOCALE_NOT_USED标志来成功编译。

live555源码下载地址：http://www.live555.com/liveMedia/public/

1、 cp config.armlinux config.mips文件的属性和内容

修改config.mips文件内容：

CROSS_COMPILE?= mips-linux-gnu- //这里写你自己的交叉编译器

COMPILE_OPTS = $(INCLUDES) -I. -O2-DSOCKLEN_T=socklen_t -DXLOCALE_NOT_USED=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64

C = c

C_COMPILER = $(CROSS_COMPILE)gcc

C_FLAGS = $(COMPILE_OPTS)

CPP = cpp

CPLUSPLUS_COMPILER = $(CROSS_COMPILE)g++

CPLUSPLUS_FLAGS = $(COMPILE_OPTS) -Wall -DBSD=1

OBJ = o

LINK = $(CROSS_COMPILE)g++ -o

LINK_OPTS =

CONSOLE_LINK_OPTS = $(LINK_OPTS)

LIBRARY_LINK = $(CROSS_COMPILE)ar cr

LIBRARY_LINK_OPTS = $(LINK_OPTS)

LIB_SUFFIX = a

LIBS_FOR_CONSOLE_APPLICATION =

LIBS_FOR_GUI_APPLICATION =

EXE =

2、在live555根目录下运行./genMakefiles mips

3、在live555根目录下执行make

4、编译报错及解决办法：

报错：

../liveMedia/libliveMedia.a(Locale.o): In function `Locale::~Locale()':

Locale.cpp:(.text+0x28): undefined reference to `uselocale'
Locale.cpp:(.text+0x30): undefined reference to `freelocale'
../liveMedia/libliveMedia.a(Locale.o): In function `Locale::Locale(char const*, LocaleCategory)':
Locale.cpp:(.text+0xa8): undefined reference to `newlocale'
Locale.cpp:(.text+0xb4): undefined reference to `uselocale'
collect2: error: ld returned 1 exit status
make[1]: *** [testMPEG4VideoStreamer] Error 1
make[1]: Leaving directory `/home/beihj/live555/live/testProgs'

make: *** [all] Error 2

查看liveMedia/include/Locale.hh文件，有如下信息：

// If you're on a system that (for whatever reason) doesn't have either the "setlocale()" or the "newlocale()" function, then
// add "-DLOCALE_NOT_USED" to your "config.*" file.

// If you're on a system that (for whatever reason) has "setlocale()" but not "newlocale()", then
// add "-DNEWLOCALE_NOT_USED" to your "config.*" file.
// (Note that -DLOCALE_NOT_USED implies -DNEWLOCALE_NOT_USED; you do not need both.)
// Also, for Windows systems, we define "NEWLOCALE_NOT_USED" by default, because at least some Windows systems
// (or their development environments) don't have "newlocale()". If, however, your Windows system *does* have "newlocale()",
// then you can override this by defining "NEWLOCALE_USED" before #including this file.

// Finally, some old development environments need a header file "xlocale.h" to use "newlocale()".
// Should you need this header file, add "-DNEED_XLOCALE_H" to your "config.*" file.

解决办法：

我的系统跟local相关的函数都没有，根据liveMedia/include/Locale.hh提示修改config.mips给COMPILE_OPTS 添加-DLOCALE_NOT_USED。如果是其他情况，请根据提示修改config.mips即可。

COMPILE_OPTS = $(INCLUDES) -I. -O2 -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -DLOCALE_NOT_USED