Ubuntu 關於gcc/g++版本更換以及編譯問題

我在編譯android時，出現了以下問題:

ERROR: prebuilts/tools/gcc-sdk/../../gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6/bin/x86_64-linux-ar only run on 64-bit linux
make: *** [out/host/linux-x86/obj/STATIC_LIBRARIES/libhost_intermediates/libhost.a] Error 1

解決方法:

看一下你的Ubuntu都裝了哪些版本的gcc 用命令：ls /usr/bin/gcc* -l 我的顯示是

lrwxrwxrwx 1 root root 7 2011-08-14 15:17 /usr/bin/gcc -> gcc-4.8

-rwxr-xr-x 1 root root 224544 2011-10-06 05:47 /usr/bin/gcc-4.8

-rwxr-xr-x 1 root root 237072 2011-09-17 17:25 /usr/bin/gcc-4.8

-rwxr-xr-x 1 root root 302104 2011-09-17 05:43 /usr/bin/gcc-4.6

由上面顯示可以看出默認安裝的是gcc-4.8，現在來改成gcc-4.6

刪除gcc－4.8的軟連接文件/usr/bin/gcc。（只是刪除軟連接）

命令：sudo rm /usr/bin/gcc

然後建一個軟連接，指向gcc-4.6。

命令：sudo ln -s /usr/bin/gcc-4.6 /usr/bin/gcc

ok了，www.linuxidc.com 現在用命令：gcc -v 顯示如下：

使用內建 specs。

目標：i686-linux-gnu

配置爲：../src/configure -v –with-pkgversion=’Ubuntu/Linaro 4.4.6-11ubuntu2’ –with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs –enable-languages=c,c++,fortran,objc,obj-c++ –prefix=/usr –program-suffix=-4.6 –enable-shared –enable-linker-build-id –with-system-zlib –libexecdir=/usr/lib –without-included-gettext –enable-threads=posix –with-gxx-include-dir=/usr/include/c++/4.6 –libdir=/usr/lib –enable-nls –with-sysroot=/ –enable-clocale=gnu –enable-libstdcxx-debug –enable-objc-gc –enable-targets=all –disable-werror –with-arch-32=i686 –with-tune=generic –enable-checking=release –build=i686-linux-gnu –host=i686-linux-gnu –target=i686-linux-gnu

線程模型：posix

gcc 版本 4.6.4 (Ubuntu/Linaro 4.6.4-11ubuntu2)

用同樣的方法更改g++的默認版本。

 chunchun@****:/usr/bin$ ls -l g++*
lrwxrwxrwx 1 root root      7  6月  7 11:25 g++ -> g++-4.6
-rwxr-xr-x 1 root root 263328  4月 16  2012 g++-4.4
-rwxr-xr-x 1 root root 357312  4月 16  2012 g++-4.6

需要將g++鏈接改爲g++-4.4:

sudo mv g++ g++.bak

sudo ln -s g++-4.4 g++

修改後

chunchun@**:/usr/bin$ ls -l g++*
lrwxrwxrwx 1 root root 7 6月 7 11:25 g++ -> g++-4.4
-rwxr-xr-x 1 root root 263328 4月 16 2012 g++-4.4
-rwxr-xr-x 1 root root 357312 4月 16 2012 g++-4.6
lrwxrwxrwx 1 root root 7 3月 14 2012 g++.bak -> g++-4.6

再查看gcc和g++版本號：

gcc/g++更換成功，於是編譯android源碼，但結果下來

out/target/*****system.img後出現error，最後發現編譯沒有什麼問題，只是一些腳本文件還麼有成功.

/home/hsc/usr/Android/是我存放Android4.4的源代碼文件夾

根據錯誤提示: cd/home/hsc/usr/Android/prebuilts/tools/gcc-sdk/

然後把gcc文件下的第23到第39行註釋掉，除38行外。

操作：更改Android源代碼文件夾下的external/qemu/Makefile.target和Makefile.common文件

external/qemu/Makefile.target

252 line,

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

else

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m32

endif

446 line,

LOCAL_LDLIBS +=$(common_LOCAL_LDLIBS) -m64

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_LDLIBS +=$(common_LOCAL_LDLIBS) -m64

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

else

LOCAL_LDLIBS +=$(common_LOCAL_LDLIBS) -m32

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m32

endif

external/qemu/Makefile.common

149 line,

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

else

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m32

endif

301 line,

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

else

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m32

endif

641 line,

LOCAL_CFLAGS +=(commonLOCALCFLAGS)−I (intermediates) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_CFLAGS +=(commonLOCALCFLAGS)−I (intermediates) -m64

else

LOCAL_CFLAGS +=(commonLOCALCFLAGS)−I (intermediates) -m32

endif

730 line,

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

換成

ifneq($(BUILD_HOST_64bit),)

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m64

else

LOCAL_CFLAGS +=$(common_LOCAL_CFLAGS) -m32

endif

這是我的公衆號: