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Make mksh builds deterministic #48

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Merged
alganet merged 1 commit into from
Jan 27, 2026
Merged

Make mksh builds deterministic #48

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26 changes: 24 additions & 2 deletions variants/mksh.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -59,21 +59,43 @@ shvr_build_mksh ()
tar --extract \
--file="${build_srcdir}.tar.gz" \
--strip-components=1 \
--directory="${build_srcdir}"
--directory="${build_srcdir}" \
--owner=0 \
--group=0 \
--mode=go-w \
--touch

cd "${build_srcdir}"

# Build with reproducible flags
# Use fixed source date epoch and disable compiler timestamp features
export SOURCE_DATE_EPOCH=1
export TZ=UTC
export CFLAGS="-frandom-seed=1"
export LDFLAGS="-Wl,--build-id=none"
export RANLIB="ranlib -D"
export AR="ar -D"

sh ./Build.sh

unset SOURCE_DATE_EPOCH TZ CFLAGS LDFLAGS RANLIB AR

mkdir -p "${SHVR_DIR_OUT}/mksh_${version}/bin"
cp "mksh" "${SHVR_DIR_OUT}/mksh_$version/bin"

# Strip binary to ensure reproducible output
strip --strip-all "${SHVR_DIR_OUT}/mksh_${version}/bin/mksh"

# Ensure consistent permissions and timestamps
touch -d "@1" "${SHVR_DIR_OUT}/mksh_${version}/bin/mksh"
chmod 755 "${SHVR_DIR_OUT}/mksh_${version}/bin/mksh"

"${SHVR_DIR_OUT}/mksh_${version}/bin/mksh" -c "echo mksh version $version"
}

shvr_deps_mksh ()
{
shvr_versioninfo_mksh "$1"
apt-get -y install \
wget gcc make
wget gcc make binutils
}