flex
Fast lexical analyser generator
Flex is a tool for generating scanners. A scanner, sometimes called a tokenizer, is a program which recognizes lexical patterns in text. The flex program reads user-specified input files, or its standard input if no file names are given, for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates a C source file named, "lex.yy.c", which defines the function yylex(). The file "lex.yy.c" can be compiled and linked to produce an executable. When the executable is run, it analyzes its input for occurrences of text matching the regular expressions for each rule. Whenever it finds a match, it executes the corresponding C code.
- Versions: 2.6.4
- Website: https://github.com/westes/flex
- Licenses: non-copyleft
- Package source: gnu/packages/flex.scm
- Builds: See build status
- Issues: See known issues
Installation
Install the latest version of flex as follows:
guix install flex
Or install a particular version:
guix install flex@2.6.4
You can also install packages in augmented, pure or containerized environments for development or simply to try them out without polluting your user profile. See the guix shell documentation for more information.
Badge code
You can use the following badge to inform users of flex about the latest version available in Guix.
Example HTML:
<a href='https://packages.guix.gnu.org/packages/flex'><img src='https://packages.guix.gnu.org/packages/flex/badges/latest-version.svg' alt='Version in GNU Guix'></a>
Example Markdown:
[](https://packages.guix.gnu.org/packages/flex)
Example Org:
[[https://packages.guix.gnu.org/packages/flex][https://packages.guix.gnu.org/packages/flex/badges/latest-version.svg]]