6.12. pigz 2.8

Licenses:

• zlib License

Dependencies:

• musl (libc)
• make
• zlib-ng (libz)
• pthreads

pigz is a parallel gzip-compatible compressor and decompressor. we need it to replace gzip functionality in the target userspace with multi-core capable compression and decompression.

Replacement Symlinks

To replace gzip-family commands, this package should provide these command names in PATH:

• gzip -> pigz
• gunzip -> unpigz
• zcat -> unpigz

Optional additional compatibility names can be added later as needed.

Extract and Enter the Source Tree

cd "$LBI_SOURCES"
tar -xf pigz-2.8.tar.gz
cd pigz-2.8

Build pigz

make $LWI_MAKE_FLAGS \
    CC="$LBI_ROOT/system/tools/bin/$LBI_TARGET-clang" \
    CFLAGS="-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual --target=$LBI_TARGET --sysroot=$LBI_ROOT $LWI_CFLAGS" \
    LDFLAGS="--target=$LBI_TARGET --sysroot=$LBI_ROOT -L$LBI_ROOT/system/libraries $LBI_CUSTOM_LDFLAGS"

Install pigz

install -Dm755 pigz "$LBI_ROOT/system/binaries/pigz"
install -Dm755 unpigz "$LBI_ROOT/system/binaries/unpigz"
install -Dm644 pigz.1 "$LBI_ROOT/system/documentation/man-pages/man1/pigz.1"

Install gzip Compatibility Symlinks

ln -sf pigz "$LBI_ROOT/system/binaries/gzip"
ln -sf unpigz "$LBI_ROOT/system/binaries/gunzip"
ln -sf unpigz "$LBI_ROOT/system/binaries/zcat"

Command Explanations

• make $LWI_MAKE_FLAGS: Builds pigz with the shared make parallelism setting.
• CC="$LBI_ROOT/system/tools/bin/$LBI_TARGET-clang": Uses the target-prefixed Clang compiler.
• CFLAGS="-O3 ... --target=$LBI_TARGET --sysroot=$LBI_ROOT $LWI_CFLAGS": Keeps upstream's optimization and warning flags while targeting the selected sysroot and preserving local C flag tuning.
• LDFLAGS="--target=$LBI_TARGET --sysroot=$LBI_ROOT -L$LBI_ROOT/system/libraries $LBI_CUSTOM_LDFLAGS": Links against target libraries, including the zlib-compatible library installed under /system/libraries.
• install -Dm755 pigz ...: Installs the compressor binary and creates parent directories as needed.
• install -Dm755 unpigz ...: Installs the decompressor binary alongside pigz.
• install -Dm644 pigz.1 ...: Installs the manual page into the book's man-page tree.
• ln -sf pigz "$LBI_ROOT/system/binaries/gzip": Provides the standard gzip command name through pigz.
• ln -sf unpigz ... gunzip and ln -sf unpigz ... zcat: Provides gzip-family decompression command names through unpigz.