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Add support for more distros #29

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Add support for more distros #29

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48 changes: 35 additions & 13 deletions alpine-chroot-install
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,8 @@
# qemu-user and binfmt to emulate different architecture (e.g. armhf).
#
# If qemu-user and binfmt is needed, the script checks if both are available.
# If not, it tries to install them using apt-get. Beside this the script should
# work on any Linux system.
# If not, it tries to install them using apt-get, dnf, yum or apk. Beside this
# the script should work on any Linux system.
#
# It also creates script "enter-chroot" inside the chroot directory, that may
# be used to enter the chroot environment. That script do the following:
Expand Down Expand Up @@ -231,23 +231,37 @@ gen_destroy_script() {
EOF
}

#------------------------- Debian/Ubuntu ---------------------------#

alias apt_install='apt-get install -y --no-install-recommends'
#------------------------- Distro-specific tool ---------------------------#

if command -v apt-get 2>/dev/null; then
alias tool_install='apt-get install -y --no-install-recommends'
tool=apt
elif command -v dnf 2>/dev/null; then
alias tool_install='dnf install -y'
tool=dnf
elif command -v yum 2>/dev/null; then
alias tool_install='yum install -y'
tool=yum
elif command -v apk 2>/dev/null; then
alias tool_install='apk add'
tool=apk
fi

# Installs and enables binfmt-support on Debian/Ubuntu host.
# Installs and enables binfmt-support (only on Debian/Ubuntu host).
install_binfmt_support() {
apt_install binfmt-support \
if [ "$tool" != "apt" ]; then return; fi

tool_install binfmt-support \
|| die 'Failed to install binfmt-support using apt-get!'

update-binfmts --enable \
|| die 'Failed to enable binfmt!'
}

# Installs QEMU user mode emulation binaries on Debian/Ubuntu host.
# Installs QEMU user mode emulation binaries.
install_qemu_user() {
apt_install qemu-user-static \
|| die 'Failed to install qemu-user-static using apt-get!'
tool_install "$1" "$2" \
|| die "Failed to install $1 $2 using $tool!"
}


Expand Down Expand Up @@ -300,11 +314,19 @@ cd "$CHROOT_DIR"
QEMU_EMULATOR=''
if [ -n "$ARCH" ] && [ $(normalize_arch $ARCH) != $(normalize_arch $(uname -m)) ]; then
qemu_arch="$(normalize_arch $ARCH)"
QEMU_EMULATOR="/usr/bin/qemu-$qemu_arch-static"
QEMU_EMULATOR="/usr/bin/qemu-$qemu_arch"
QEMU_PKG=qemu-user-static

if [ "$tool" = "apk" ]; then
QEMU_PKG="qemu-openrc"
QEMU_PKG2="qemu-$qemu_arch"
else
QEMU_EMULATOR="$QEMU_EMULATOR"-static
fi

if [ ! -x "$QEMU_EMULATOR" ]; then
einfo 'Installing qemu-user-static on host system...'
install_qemu_user
einfo "Installing $QEMU_PKG on host system..."
install_qemu_user "$QEMU_PKG" "$QEMU_PKG2"
fi

if [ ! -e /proc/sys/fs/binfmt_misc/qemu-$qemu_arch ]; then
Expand Down