#bash #build #install #auto #script #compile #source

bash.build.sh

#!/usr/bin/env bash

set -eo pipefail

# 5.0.18
# 5.1.16
# 5.2.15

VERSION="${1:-5.2.15}"

SOURCE="https://ftp.gnu.org/gnu/bash/bash-${VERSION}.tar.gz"

CURRDIR="$(pwd)"
TEMPDIR="$(mktemp -d)"

#trap 'rm -rf "${TEMPDIR}"; ' EXIT #ERR

curl -#L "${SOURCE}" \
	| tar --strip=1 -xzC "${TEMPDIR}"

BUILDDIR="${TEMPDIR}/build.dir"
PREFIX="${HOME}/.local/opt/bash-${VERSION}"

mkdir -p "${BUILDDIR}" "${PREFIX}"

(
	cd "${BUILDDIR}"
	env -i ../configure --help > "${CURRDIR}/bash-${VERSION}.cfg.txt"
	env -i ../configure CC=cc CFLAGS=-Os LDFLAGS=-v \
		--prefix="${PREFIX}"              \
		--disable-profiling               \
		--without-gnu-ld                  \
		--without-gnu-malloc              \
		--without-bash-malloc             \
		--with-afs                        \
		--with-curses                     \
		--with-included-gettext           \
		--with-installed-readline         \
		--enable-alias                    \
		--enable-alt-array-implementation \
		--enable-arith-for-command        \
		--enable-array-variables          \
		--enable-bang-history             \
		--enable-brace-expansion          \
		--enable-casemod-attributes       \
		--enable-casemod-expansions       \
		--enable-command-timing           \
		--enable-cond-command             \
		--enable-cond-regexp              \
		--enable-coprocesses              \
		--enable-debugger                 \
		--enable-dev-fd-stat-broken       \
		--enable-directory-stack          \
		--enable-direxpand-default        \
		--enable-disabled-builtins        \
		--enable-dparen-arithmetic        \
		--enable-extended-glob            \
		--enable-extended-glob-default    \
		--enable-function-import          \
		--enable-glob-asciiranges-default \
		--enable-help-builtin             \
		--enable-history                  \
		--enable-job-control              \
		--enable-mem-scramble             \
		--enable-multibyte                \
		--enable-net-redirections         \
		--enable-process-substitution     \
		--enable-progcomp                 \
		--enable-prompt-string-decoding   \
		--enable-readline                 \
		--enable-restricted               \
		--enable-select                   \
		--enable-single-help-strings      \
		--enable-threads=posix            \
		--enable-translatable-strings     \
		--enable-usg-echo-default         \
		--enable-xpg-echo-default         \
		--disable-separate-helpfiles      \
		--disable-static-link             \
		--disable-strict-posix-default    \
		;
		#--enable-minimal-config

)

case $(uname) in
	Darwin)
		NCPU=$(sysctl -n hw.ncpu || echo 1)
		;;
	Linux)
		NCPU=$(nproc || echo 1)
		;;
	*)
		NCPU=0
		;;
esac

NCPU=1

env -i make -C "${BUILDDIR}" -j "${NCPU}" clean install

echo "Installed to '${PREFIX}'..."

cp -vf "${BUILDDIR}/bash" "bash"

if [ -L "${PREFIX}/etc" ]; then
	rm "${PREFIX}/etc"
fi

if [ ! -e "${PREFIX}/etc" ]; then
	ln -vsf /etc/ "${PREFIX}/etc"
fi

exit $?

What's that about

What's that about

statically builds bash (currently v5.0) to use it as a shell:)