buildroot编译misp-linux-g++工具

buildroot编译misp-linux-g++工具

基于qca953x 路由平台，buildroot版本为buildroot-2009.08；

1.把toolchain 先distclean下
cd build/buildroot-2009.08/
make distclean

2.勾选Build/install c++ compiler and libstdc++

make menconfig

在Toolchain里面选上你需要的编译工具，比如g++是

[ ] Build/install c++ compiler and libstdc++?

移动到上面，按一下空格，就会变成

[*] Build/install c++ compiler and libstdc++?

3.make

如果遇到以下错误

In file included from /trunk/build/buildroot-2009.08/toolchain_build_mips/gcc-4.3.3/libstdc++-v3/include/precompiled/extc++.h:52:

/trunk/build/buildroot-2009.08/toolchain_build_mips/gcc-4.3.3-final/mips-linux-uclibc/libstdc++-v3/include/ext/rope:1109:13: error: macro "index" requires 2 arguments, but only 1 given

解决办法：

make clean

然后修改trunk\build\buildroot-2009.08\toolchain_build_mips\gcc-4.3.3\libstdc++-v3\include\ext下的两个文件rope和ropeimpl.h

rope

#include <bits/gthr.h>

#include <tr1/functional>

#undef index  ---增加这一句

# ifdef __GC

#   define __GC_CONST const

ropeimpl.h

#include <ext/memory> // For uninitialized_copy_n

#include <ext/numeric> // For power

#undef index ---增加这一句

_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)

也可以做个gcc patch文件999-gcc-4.3.3-libstdcppv3-include-ext-rope.patch放到trunk\build\buildroot-2009.08\toolchain\gcc\4.3.3目录下
打patch方法：
diff -urN gcc-4.3.3.orig/libstdc++-v3/include/ext/ropeimpl.h gcc-4.3.3/libstdc++-v3/include/ext/ropeimpl.h > 999-gcc-4.3.3-libstdcppv3-include-ext-ropeimpl.patch
diff -urN gcc-4.3.3.orig/libstdc++-v3/include/ext/rope gcc-4.3.3/libstdc++-v3/include/ext/rope > 999-gcc-4.3.3-libstdcppv3-include-ext-rope.patch
附 999-gcc-4.3.3-libstdcppv3-include-ext-rope.patch文件内容
diff -urN gcc-4.3.3.orig/libstdc++-v3/include/ext/rope gcc-4.3.3/libstdc++-v3/include/ext/rope
--- gcc-4.3.3.orig/libstdc++-v3/include/ext/rope  2016-06-12 10:59:14.953284600 +0800
+++ gcc-4.3.3/libstdc++-v3/include/ext/rope  2016-06-14 14:46:07.568100900 +0800

@@ -59,6 +59,8 @@
 #include <bits/gthr.h>
 #include <tr1/functional>
 
+#undef index
+
 # ifdef __GC
 #   define __GC_CONST const
 # else
diff -urN gcc-4.3.3.orig/libstdc++-v3/include/ext/ropeimpl.h gcc-4.3.3/libstdc++-v3/include/ext/ropeimpl.h
--- gcc-4.3.3.orig/libstdc++-v3/include/ext/ropeimpl.h2016-06-12 10:59:14.953284600 +0800
+++ gcc-4.3.3/libstdc++-v3/include/ext/ropeimpl.h  2016-06-14 14:46:42.177097000 +0800
@@ -54,6 +54,8 @@
 #include <ext/memory> // For uninitialized_copy_n
 #include <ext/numeric> // For power
 
+#undef index
+
 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
 
   using std::size_t;

另外建议同时改一个配置文件

trunk/build/buildroot-2009.08/toolchain/uClibc/board953x.config

将UCLIBC_SUSV3_LEGACY改为
UCLIBC_SUSV3_LEGACY=y

4.export工具链

编译完后的工具链位于trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/bin下面；

ls trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/bin
ccache                mips-linux-cc         mips-linux-gcov      mips-linux-objcopy  mips-linux-strip             mips-linux-uclibc-cpp        mips-linux-uclibc-gprof     mips-linux-uclibc-ranlib
ldconfig              mips-linux-c++filt    mips-linux-gdb       mips-linux-objdump  mips-linux-uclibc-addr2line  mips-linux-uclibc-g++        mips-linux-uclibc-ld        mips-linux-uclibc-readelf
ldd                   mips-linux-cpp        mips-linux-gprof     mips-linux-ranlib   mips-linux-uclibc-ar         mips-linux-uclibc-gcc        mips-linux-uclibc-ldconfig  mips-linux-uclibc-size
mips-linux-addr2line  mips-linux-g++        mips-linux-ld        mips-linux-readelf  mips-linux-uclibc-as         mips-linux-uclibc-gcc-4.3.3  mips-linux-uclibc-ldd       mips-linux-uclibc-sstrip
mips-linux-ar         mips-linux-gcc        mips-linux-ldconfig  mips-linux-size     mips-linux-uclibc-c++        mips-linux-uclibc-gccbug     mips-linux-uclibc-nm        mips-linux-uclibc-strings
mips-linux-as         mips-linux-gcc-4.3.3  mips-linux-ldd       mips-linux-sstrip   mips-linux-uclibc-cc         mips-linux-uclibc-gcov       mips-linux-uclibc-objcopy   mips-linux-uclibc-strip
mips-linux-c++        mips-linux-gccbug     mips-linux-nm        mips-linux-strings  mips-linux-uclibc-c++filt    mips-linux-uclibc-gdb        mips-linux-uclibc-objdump

cp -r trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/bin ~/build_mips/

设置环境变量以让 Shell 能够访问到工具链。运行命令 

export PATH=$PATH:~/build_mips/bin

此设置只在当前的 Shell 里有效。

或者

加入环境变量
# vim /etc/profile
加入下面这一行：
export PATH=$PATH:~/build_mips/bin
# source /etc/profile   //在重启之前，每次打开一个终端都要再运行一次这个

编译好的libc++库目录位于

trunk\build\buildroot-2009.08\build_mips\staging_dir\usr\lib
trunk\build\buildroot-2009.08\build_mips\staging_dir\usr\mips-linux-uclibc\lib

$ ls trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/lib
crt1.o  gcc        libc_pic.a      libcrypt.so  libdl_pic.a  libm.a      libnsl.a      libpthread.a      libresolv.a      librt.a      libutil.a      Scrt1.o
crti.o  ldscripts  libcrypt.a      libc.so      libdl.so     libm_pic.a  libnsl_pic.a  libpthread_pic.a  libresolv_pic.a  librt_pic.a  libutil_pic.a  uclibc_nonshared.a
crtn.o  libc.a     libcrypt_pic.a  libdl.a      libiberty.a  libm.so     libnsl.so     libpthread.so     libresolv.so     librt.so     libutil.so

$ ls trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/mips-linux-uclibc/lib
libgcc_s.so    libgomp.a   libgomp.so    libgomp.so.1.0.0  libiberty.a   libmudflap.la  libmudflap.so.0      libmudflapth.a   libmudflapth.so    libmudflapth.so.0.0.0  libstdc++.la  libstdc++.so.6       libsupc++.a
libgcc_s.so.1  libgomp.la  libgomp.so.1  libgomp.spec      libmudflap.a  libmudflap.so  libmudflap.so.0.0.0  libmudflapth.la  libmudflapth.so.0  libstdc++.a            libstdc++.so  libstdc++.so.6.0.10  libsupc++.la

5.执行下面命令，如果有类似结果显示，说明工具链编译ok
$ mips-linux-gcc --version
mips-linux-gcc (GCC) 4.3.3
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ mips-linux-g++ --version
mips-linux-g++ (GCC) 4.3.3
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

6.mips-linux-g++ 的socket.h expected initializer before 'throw' error：

trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/include/bits/socket.h:271: error: expected initializer before 'throw'

修改trunk/build/buildroot-2009.08/build_mips/staging_dir/usr/include/bits/socket.h文件:line 271
  + CMSG_ALIGN (sizeof (struct cmsghdr)))
 #define CMSG_LEN(len)   (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
  /*--------------------主要是修改下面这个函数--------------------------*/
-extern struct cmsghdr * __NTH (__cmsg_nxthdr (struct msghdr *__mhdr,
-      struct cmsghdr *__cmsg)) __THROW;
+extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
+      struct cmsghdr *__cmsg) __THROW;
/*-----------------------------------------------*/

 #ifdef __USE_EXTERN_INLINES
 # ifndef _EXTERN_INLINE

或者打个patch

build/buildroot-2009.08/toolchain_build_mips/uClibc-0.9.30/include/bits$ ls socket.h -l

socket.h -> ../../libc/sysdeps/linux/mips/bits/socket.h

build/buildroot-2009.08/toolchain_build_mips/uClibc-0.9.30/libc/sysdeps/linux/mips/bits/socket.h

diff -urN uClibc-0.9.30/libc/sysdeps/linux/mips/bits/socket.h.orig uClibc-0.9.30/libc/sysdeps/linux/mips/bits/socket.h > uClibc-0.9.30-015-include-socket.h.patch

diff -urN uClibc-0.9.30/include/bits/socket.h.orig uClibc-0.9.30/include/bits/socket.h > uClibc-0.9.30-015-include-socket.h.patch

uClibc-0.9.30-015-include-socket.h.patch内容

--- uClibc-0.9.30/libc/sysdeps/linux/mips/bits/socket.h.orig2016-06-12 11:04:17.491075200 +0800

+++ uClibc-0.9.30/libc/sysdeps/linux/mips/bits/socket.h 2016-06-14 15:27:14.234586900 +0800

@@ -268,8 +268,8 @@

+ CMSG_ALIGN (sizeof (struct cmsghdr)))

#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))

-extern struct cmsghdr * __NTH (__cmsg_nxthdr (struct msghdr *__mhdr,

- struct cmsghdr *__cmsg)) __THROW;

+extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,

+ struct cmsghdr *__cmsg) __THROW;

#ifdef __USE_EXTERN_INLINES

# ifndef _EXTERN_INLINE

# define _EXTERN_INLINE extern __inline