uboot4extlinux-sunxi: architecture: switch to 'any'

These u-boot binaries do not depend on glibc, so switching
to 'any' shound't be an issue.

In addition, they can instaled to a storage device (like
a microSD for instance) from any architecture as the
installation scripts are architecture independent.

Shipping this package on other architectures than armv7h
enables people already running Parabola on other
architectures to (re-)install u-boot without having to
chroot in the ARM rootfs.

Chrooting in another rootfs can be a huge security risk
in some circumstances: the user doing that has to trust
that the binaries of the chroot (like ls or pacman for
instance) are not compromised in any way.

Otherwise as these binaries run as root, they could
easily mount filesystems, modify the host binaries,
load kernel modules compiled with the host architectures,
and so on, to compromize the host.

In addition there are also use cases that don't require a
rootfs at all like network booting or quick tests to see
if u-boot or the card works fine. These would be more
difficult to do in a safe way if a chroot is required as
users would have to manually dowload, verify and unpack
Parabola ARM packages to do that.

Here the arm-none-eabi-gcc has been replaced by
arm-linux-gnueabi-gcc because arm-linux-gnueabi-gcc
comes from Arch Linux and it's not available on
armv7h.

Since all the currently supported stable architecture
(armv7h, i686, x86_64) have the arm-linux-gnueabi-gcc
compiler, we use it instead.

The arm-linux-gnueabi-gcc can also be bootstraped from
abslibre if needed, so it's easier to add support for
new architectures if needed.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

1 files changed, 8 insertions, 16 deletions

diff --git a/libre/uboot4extlinux-sunxi/PKGBUILD b/libre/uboot4extlinux-sunxi/PKGBUILD
index 78c9ead9e..faf0cbba6 100644
--- a/libre/uboot4extlinux-sunxi/PKGBUILD
+++ b/libre/uboot4extlinux-sunxi/PKGBUILD
@@ -56,14 +56,12 @@ pkgname=("${pkgbase}"
          'uboot4extlinux-orangepi_plus')
 
 pkgver=2021.07
-pkgrel=2
-arch=('armv7h' 'i686' 'x86_64')
+pkgrel=3
+arch=('any')
 url="http://git.denx.de/u-boot.git/"
 license=('GPL')
-makedepends=('bc' 'dtc' 'python' 'python-setuptools' 'python2' 'swig')
-makedepends_i686+=('arm-none-eabi-gcc')
-makedepends_ppc64le+=('arm-none-eabi-gcc')
-makedepends_x86_64+=('arm-none-eabi-gcc')
+makedepends=('arm-linux-gnueabi-gcc' 'bc' 'dtc' 'python' 'python-setuptools'
+             'python2' 'swig')
 source=("ftp://ftp.denx.de/pub/u-boot/u-boot-${pkgver}.tar.bz2"
         'extlinux.conf'
         "${pkgbase}.hook.in"
@@ -100,10 +98,8 @@ _defconfigs=('A10-OLinuXino-Lime_defconfig'
 # Offset at which to install u-boot
 u_boot_with_spl_offset=8192
 
-case "$CARCH" in
-    armv7h)              ARCH=arm;;
-    i686|ppc64le|x86_64) ARCH=arm;CROSS_COMPILE=arm-none-eabi-;;
-esac
+ARCH=arm
+CROSS_COMPILE=arm-linux-gnueabi-
 
 _nr_targets=0
 for _defconfig in ${_defconfigs[@]}; do
@@ -142,12 +138,8 @@ _build_uboot_target()
 
     echo 'CONFIG_IDENT_STRING=" Parabola GNU/Linux-libre"' >> .config
 
-    if [ "$CARCH" = "armv7h" ]; then
-        make "ARCH=${ARCH}" EXTRAVERSION=-${pkgrel}
-    else
-        make "ARCH=${ARCH}" "CROSS_COMPILE=${CROSS_COMPILE}" \
-             EXTRAVERSION=-${pkgrel}
-    fi
+    make "ARCH=${ARCH}" "CROSS_COMPILE=${CROSS_COMPILE}" \
+         EXTRAVERSION=-${pkgrel}
 
     echo "==> Installing ${_target_name} to ${_destdir}"
     install -d ${_destdir}