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GCC 源码编译安装
前言
本文主要介绍如何在特定条件下,码包通过源码编译安装GCC(GNU Compiler Collection)4.8.5版本。码包在Linux环境下,码包特别是码包遇到较老工程代码和低版本GCC适配问题时,网络仓库不可用,码包可通过下载源码进行本地编译安装。码包leveldb源码atom文章总结了该过程的码包步骤,以期帮助读者解决类似需求。码包
Linux系统版本:SUSE Linux Enterprise Server SP5 (aarch) - Kernel \r (\l)
GCC版本:gcc-4.8.5
步骤如下:
1,码包源码下载
直接在Linux终端执行:wget ftp.gnu.org/gnu/gcc/gcc...
或手动下载:ftp://gcc.gnu.org/pub/gcc/infrastructure
选取对应的码包gcc版本下载。
2,码包解压并进入目录
解压下载的码包tar包:tar -jxvf gcc-4.8.5.tar.bz2
进入解压后的目录:cd gcc-4.8.5
3,配置依赖库
联网情况下:cd gcc-4.8.5/
./contrib/download_prerequisites
无法联网时,码包自动发口令源码手动下载依赖库(如mpfr、码包gmp、码包mpc)并上传到指定目录,然后分别解压、重命名并链接。
4,车辆识别软件 源码创建编译存放目录
在gcc-4.8.5目录下执行:mkdir gcc-build-4.8.5
5,生成Makefile文件
cd gcc-build-4.8.5
../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib
推荐配置时,根据环境调整参数,如X_环境下的`--disable-libsanitizer`。
6,执行编译
make(可能耗时较长)
解决可能出现的dts 源码输出 授权问题,如libc_name_p和struct ucontext uc,通过参考gcc.gnu.org/git或直接覆盖相关文件。
7,安装GCC
在gcc-build-4.8.5目录下执行:make install
安装完成后,可直接解压并安装。
8,卖什么软件源码配置环境变量
执行命令:export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/root/gcc-4.8.5/mpc:/root/gcc-4.8.5/gmp:/root/gcc-4.8.5/mpfr
确保路径一致,执行 source /etc/profile 使环境变量生效。
9,检查安装情况
通过`gcc -v`和`g++ -v`验证GCC版本。
,库升级
遇到动态库未找到问题时,需升级gcc库,通过查找和替换最新库文件解决。
,卸载系统自带的gcc
以root用户执行:rpm -qa |grep gcc | xargs rpm -e --nodeps
,修改ld.so.conf文件
编辑文件:vi /etc/ld.so.conf,在最下面添加实际路径,如/usr/local/lib和/usr/local/lib。
执行 ldconfig /etc/ld.so.conf。
,修改GCC链接
确保GCC及其相关工具的正确链接,使用`ll /usr/bin/gcc*`和`ll /usr/bin/g++*`检查链接结果。
至此,GCC源码编译安装流程完成,可满足特定环境下的GCC版本需求。
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ããè¿æ ·è¿æ¥ç¨åº ld å°±ä¼å¨ libc.so æå¨çç®å½æ¥æ¾å®éè¦çåºï¼å ä¸ºä½ çæºåç/libç®å½å¯è½å·²ç»è£ äºä¸ä¸ªç¸åååçåºï¼ä¸ä¸ªä¸ºç¼è¯å¯ä»¥å¨ä½ ç宿主æºä¸è¿è¡çç¨åºçåºï¼èä¸æ¯ç¨äºäº¤åç¼è¯çã
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ãã建ç«å ¨å¥ç¼è¯å¨ï¼full gccï¼
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ãã$cd $PRJROOT/build-tools/build-gcc
ãã$../gcc-2..3/configure --target=$TARGET --prefix=$PREFIX --enable-languages=c,c++
ãã--enable-languages=c,c++ åè¯ full gcc æ¯æ c å c++ è¯è¨ã
ããç¶åç¼è¯åå®è£ ä½ ç full gcc
ãã$make all
ãã$make install
ããæ们åæ¥çç $PREFIX/bin éé¢å¤äºåªäºä¸è¥¿
ãã$ls $PREFIX/bin
ããä½ ä¼åç°å¤äº arm-linux-g++ ãarm-linux-protoize å arm-linux-c++ å 个æ件ã
ããG++-gnuç c++ ç¼è¯å¨ã
ããProtoize-ä¸Unprotoizeç¸åï¼å°K&R Cçæºç 转å为ANSI Cçå½¢å¼ï¼å½æ°ååä¸å å ¥åæ°ç±»åã
ããC++-gnu ç c++ ç¼è¯å¨ã
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ããç¨å®æ¥ç¼è¯ä¸ä¸ªå¾ç®åçç¨åº helloworld.c
ãã#include <stdio.h>
ããint main(void)
ãã{
ããprintf("hello world\n");
ããreturn 0;
ãã}
ãã$arm-linux-gcc helloworld.c -o helloworld
ãã$file helloworld
ããhelloworld: ELF -bit LSB executable, ARM, version 1,
ããdynamically linked (uses shared libs), not stripped
ããä¸é¢çè¾åºè¯´æä½ ç¼è¯äºä¸ä¸ªè½å¨ arm ä½ç³»ç»æä¸è¿è¡ç helloworldï¼è¯æä½ çç¼è¯å·¥å ·åæåäºã
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