pmbootstrap/pmb/build/autodetect.py

96 lines
2.6 KiB
Python

# Copyright 2023 Oliver Smith
# SPDX-License-Identifier: GPL-3.0-or-later
import logging
import os
import pmb.config
import pmb.chroot.apk
import pmb.helpers.pmaports
import pmb.parse.arch
def arch_from_deviceinfo(args, pkgname, aport):
"""
The device- packages are noarch packages. But it only makes sense to build
them for the device's architecture, which is specified in the deviceinfo
file.
:returns: None (no deviceinfo file)
arch from the deviceinfo (e.g. "armhf")
"""
# Require a deviceinfo file in the aport
if not pkgname.startswith("device-"):
return
deviceinfo = aport + "/deviceinfo"
if not os.path.exists(deviceinfo):
return
# Return its arch
device = pkgname.split("-", 1)[1]
arch = pmb.parse.deviceinfo(args, device)["arch"]
logging.verbose(pkgname + ": arch from deviceinfo: " + arch)
return arch
def arch(args, pkgname):
"""
Find a good default in case the user did not specify for which architecture
a package should be built.
:returns: arch string like "x86_64" or "armhf". Preferred order, depending
on what is supported by the APKBUILD:
* native arch
* device arch (this will be preferred instead if build_default_device_arch is true)
* first arch in the APKBUILD
"""
aport = pmb.helpers.pmaports.find(args, pkgname)
ret = arch_from_deviceinfo(args, pkgname, aport)
if ret:
return ret
apkbuild = pmb.parse.apkbuild(f"{aport}/APKBUILD")
arches = apkbuild["arch"]
if args.build_default_device_arch:
preferred_arch = args.deviceinfo["arch"]
preferred_arch_2nd = pmb.config.arch_native
else:
preferred_arch = pmb.config.arch_native
preferred_arch_2nd = args.deviceinfo["arch"]
if "noarch" in arches or "all" in arches or preferred_arch in arches:
return preferred_arch
if preferred_arch_2nd in arches:
return preferred_arch_2nd
try:
return apkbuild["arch"][0]
except IndexError:
return None
def suffix(apkbuild, arch):
if arch == pmb.config.arch_native:
return "native"
if "pmb:cross-native" in apkbuild["options"]:
return "native"
return "buildroot_" + arch
def crosscompile(args, apkbuild, arch, suffix):
"""
:returns: None, "native", "crossdirect" or "distcc"
"""
if not args.cross:
return None
if not pmb.parse.arch.cpu_emulation_required(arch):
return None
if suffix == "native":
return "native"
if "!pmb:crossdirect" in apkbuild["options"]:
return "distcc"
return "crossdirect"