20.Ubuntu下安装GCC

文章目录 Ubuntu下安装GCC查看官方安装指导错误缺少`gmp`库缺少`32`位开发库`libc`g++: error: gengtype-lex.c: No such file or directoryreference

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Ubuntu下安装GCC

为了支持新的c++标准，需要安装新的GCC，安装步骤如下.

查看官方安装指导

GCC版本查看,截止20240324，gcc最新的版本为13.2，支持到了c++23标准。

版本发布信息可以参考：GCC Releases查看。

安装指导参考的网页为:【GCC Installation Instructions】

检查安装依赖,下载源码，可使用git命令克隆 git clone git://gcc.gnu.org/git/gcc.git # 查看所有分支 git branch -a # 查看所有标签 git tag -l

有时候，国内访问gcc放置代码的git仓库速度会很慢，这个时候可以从开源中国的码云平台上下载，

https://gitee.com/mirrors/gcc.git

这个是国内镜像，可以加速下载速度。

下载源码后，切入源码目录，执行如下命令下载依赖 ./contrib/download_prerequisites 配置，可在源码仓库下新建build目录，然后切换到build目录下执行如下命令进行配置。 ../configure --enable-languages=c,c++ --prefix=/usr/local/gcc-13.2.0 --host=x86_64-pc-linux-gnu --prefix=/home/xx/data/sw/gcc13 --disable-multilib

更多的配置参数可以参考页面https://gcc.gnu.org/install/configure.html

安装 make -j4 sudo make install 验证安装 /usr/local/gcc-13.2.0/bin/gcc --version 设置环境变量 export PATH=$PATH:/usr/local/gcc-13.2.0/bin 卸载 sudo rm -rf /usr/local/gcc-13.2.0 错误 缺少gmp库 xx@xx-rob:~/data/code/gcc$ ./configure --enable-languages=c,c++ --prefix=/usr/local/gcc-13.2. checking for the correct version of gmp.h... no configure: error: Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+. Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify their locations. Source code for these libraries can be found at their respective hosting sites as well as at

解决方法，先执行命令：

xx@xx-rob:~/data/code/gcc$ ./contrib/download_prerequisites 2024-03-21 22:31:18 URL:http://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.2.1.tar.bz2 [2493916/2493916] -> "gmp-6.2.1.tar.bz2" [1] 2024-03-21 22:33:48 URL:http://gcc.gnu.org/pub/gcc/infrastructure/mpfr-4.1.0.tar.bz2 [1747243/1747243] -> "mpfr-4.1.0.tar.bz2" [1] 2024-03-21 22:34:29 URL:http://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.2.1.tar.gz [838731/838731] -> "mpc-1.2.1.tar.gz" [1] 2024-03-21 22:35:49 URL:http://gcc.gnu.org/pub/gcc/infrastructure/isl-0.24.tar.bz2 [2261594/2261594] -> "isl-0.24.tar.bz2" [1] gmp-6.2.1.tar.bz2: OK mpfr-4.1.0.tar.bz2: OK mpc-1.2.1.tar.gz: OK isl-0.24.tar.bz2: OK All prerequisites downloaded successfully. 缺少32位开发库libc /usr/bin/ld: cannot find -lgcc collect2: error: ld returned 1 exit status configure: error: I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.

解决办法：

安装32位libc库文件./configure时使用参数--disable-multilib禁用编译32位平台上可以使用的库 g++: error: gengtype-lex.c: No such file or directory

编译过程中报错：

> and I found the Makefile in my objdir directory. I try `make -j4` and found > g++: error: gengtype-lex.c: No such file or directory > g++: fatal error: no input files > Could you help me with this?

解决办法：

缺少flex库文件，手动安装：

sudo apt-get install flex reference

1.https://www.spinics.net/lists/gcchelp/msg50998.html

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