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7.8. byacc 20260126

byacc provides a yacc-compatible LALR(1) parser generator for package builds in the chroot environment.

Input assumption: byacc-20260126.tgz is already present in /sources from the chapter 4 source staging step.

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Licenses:

BSD-3-Clause

Dependencies:

musl (libc)
make
clang/llvm toolchain

byacc is a portable Berkeley yacc-compatible parser generator. we need it to provide a broadly compatible yacc command for package builds that expect traditional yacc behavior.

Extract and Enter the Source Tree

cd /sources
tar -xf byacc-20260126.tgz
cd byacc-20260126

Configure byacc

./configure \
    --prefix=/system \
    --bindir=/system/binaries \
    --mandir=/system/documentation/man-pages

Build byacc

make $LWI_MAKE_FLAGS

Install byacc

make install

Command Explanations

cd /sources, tar -xf, and cd byacc-...: Enter the byacc source tree from the staged archive.
./configure --prefix=/system ...: Configures byacc to install commands and manual pages into the target /system layout.
make $LWI_MAKE_FLAGS: Builds byacc with the shared make parallelism setting.
make install: Installs byacc into the active target filesystem from inside the chroot.

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