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Add bison 3.4.1.

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Andrius Štikonas 2021-02-10 18:06:40 +00:00
parent fb554b3685
commit 1a93f19e9c
18 changed files with 2495 additions and 12 deletions
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@ -305,12 +305,23 @@ stage process, first compiling flex using `scan.c` (from `scan.l`) created by
old flex, then recompile `scan.c` using the new version of flex to remove any
buggy artifacts from the old flex.
#### Part 24: grep 2.4
#### Part 24: bison 3.4.1
GNU `bison` is a parser generator. With `m4` and `flex` we can now bootstrap it
following https://gitlab.com/giomasce/bison-bootstrap. It's a 3 stage process:
1) Build bison using a handwritten grammar parser in C.
2) Use bison from previous stage on a simplified bison grammar file.
3) Build bison using original grammar file.
Finally we have a fully functional `bison` executable.
#### Part 25: grep 2.4
GNU `grep` is a pattern matching utility. Is is not immediately needed but will
be useful later for autotools.
#### Part 25: diffutils 2.7
#### Part 26: diffutils 2.7
`diffutils` is useful for comparing two files. It is not immediately needed but
is required later for autotools.