gcc-linaro-6.3.1-2017.05-i686_aarch64-linux-gnu ubuntu 16.04 gcc-linaro 的安装 修改环境变量,将环境变量写到.bashrc里边,添加后source一下，查看是否成功添加到PATH

GSL参考手册( GNU Scientific Library Reference Manual) 高清文字版，非扫描

gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.tar是由 Linaro 公司基于GCC推出的的ARM交叉编译工具。 可用于交叉编译64-bit Armv8 Cortex-A, little-endian目标中的裸机程序、u-boot、Linux kernel、filesystem和App应用程序。gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.tar交叉编译器必须安装在64为主机上，才能编译目标代码。

gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu.tar.xz 交叉编译器。

gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.gz arm64/32交叉编译工具，解压后安装即可，无需编译

The GNU MCU Eclipse Build Tools v2.11 package includes the version 4.2.1 of GNU make (built from MSYS2 source files), and version 1.29.0-git of BusyBox, which provides a convenient implementation for sh/rm/echo/mkdir.

适用于macOS的gfortran 该存储库的目标是托管适用于macOS的GNU Fortran软件包。 这些是简单的安装程序，它们会将GCC编译器（包括gfortran）安装在/usr/local/gfortran 。 怎么卸载？ sudo rm -rf /usr/local/gfortran /usr/local/bin/gfortran sudo pkgutil --forget com.gnu.gfortran 如果您对这些安装程序的构建方式感兴趣，请参见的文档。

Introduction to gettext Usually, programs are written and documented in English, and use English at execution time for interacting with users. This is true not only from within GNU, but also in a great deal of proprietary and free software. Using a common language is quite handy for communication between developers, maintainers and users from all countries. On the other hand, most people are less comfortable with English than with their own native language, and would rather be using their mother tongue for day to day's work, as far as possible. Many would simply love seeing their computer screen showing a lot less of English, and far more of their own language. GNU `gettext' is an important step for the GNU Translation Project, as it is an asset on which we may build many other steps. This package offers to programmers, translators, and even users, a well integrated set of tools and documentation. Specifically, the GNU `gettext' utilities are a set of tools that provides a framework to help other GNU packages produce multi-lingual messages. These tools include a set of conventions about how programs should be written to support message catalogs, a directory and file naming organization for the message catalogs themselves, a runtime library supporting the retrieval of translated messages, and a few stand-alone programs to massage in various ways the sets of translatable strings, or already translated strings. A special GNU Emacs mode also helps interested parties in preparing these sets, or bringing them up to date.

ubuntu下的交叉编译工具，64位arm编译器。可在虚拟机上使用

41页完全详细方档：Eclipse for ARM是借用开源软件Eclipse的工程管理工具，嵌入GNU工具集，使之能够开发ARM 公司Cortex-A系列的CPU，这里使用Eclipse for ARM作为开发软件。