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#
# Set the ARCH environment variable for uClibc compilation.
# Return value must match one of the architectures known to uClibc:
# libc/sysdeps/*/*
#
valid_archs = "\
alpha \
arm \
avr32 \
bfin \
cris \
e1 \
frv \
h8300 \
hppa \
i386 \
i960 \
ia64 \
m68k \
microblaze \
mips \
nios \
nios2 \
powerpc \
sh \
sh64 \
sparc \
v850 \
vax \
x86_64 \
xtensa \
"
def map_uclibc_arch(a, d):
"""Return the uClibc architecture for the given TARGET_ARCH."""
import re
valid_archs = d.getVar('valid_archs', 1).split()
if re.match('^(arm|sa110).*', a): return 'arm'
elif re.match('^(i.86|athlon)$', a): return 'i386'
elif re.match('^mips.*', a): return 'mips'
elif re.match('^parisc.*', a): return 'hppa'
elif re.match('^ppc.*', a): return 'powerpc'
elif re.match('^s390.*', a): return 's390'
elif re.match('^sh.*', a): return 'sh'
elif re.match('^(sun|sparc).*', a): return 'sparc'
elif re.match('^xtensa.*', a): return 'xtensa'
elif a in valid_archs: return a
else:
bb.error("cannot map '%s' to a uClibc architecture" % a)
export UCLIBC_ARCH = "${@map_uclibc_arch(d.getVar('TARGET_ARCH', 1), d)}"
def map_uclibc_abi(o, d):
"""Return the uClibc ABI for the given TARGET_OS."""
import re
arch = d.getVar('TARGET_ARCH', 1)
if map_uclibc_arch(d.getVar('TARGET_ARCH', 1), d) == "arm":
if re.match('.*eabi$', o): return 'ARM_EABI'
else: return 'ARM_OABI'
# FIXME: This is inaccurate! Handle o32, n32, n64
elif re.match('^mips.*64$', arch): return 'MIPS_N64_ABI'
elif re.match('^mips.*', arch): return 'MIPS_O32_ABI'
return ""
export UCLIBC_ABI = "${@map_uclibc_abi(d.getVar('TARGET_OS', 1), d)}"
def map_uclibc_endian(a, d):
"""Return the uClibc endianess for the given TARGET_ARCH."""
import re
# Always BE
if re.match('^(avr32|e1|frv|(parisc|hppa)|m68k|microblaze|powerpc.*|(sparc|sun).*)$', a):
return 'BIG'
# Possibly BE
elif re.match('^(((arm|sa110).*eb)|h8300.*eb|(parisc|hppa).*eb|mips|sh.*eb|xtensa.*eb)$', a):
return 'BIG'
return 'LITTLE'
export UCLIBC_ENDIAN = "${@map_uclibc_endian(d.getVar('TARGET_ARCH', 1), d)}"
# internal helper
def uclibc_cfg(feature, features, tokens, cnf, rem):
if type(tokens) == type(""):
tokens = [tokens]
rem.extend(['/^[# ]*' + token + '[ =]/d' for token in tokens])
if type(features) == type([]) and feature in features:
cnf.extend([token + '=y' for token in tokens])
else:
cnf.extend(['# ' + token + ' is not set' for token in tokens])
# Map distro features to config settings
def features_to_uclibc_settings(d):
cnf, rem = ([], [])
distro_features = d.getVar('DISTRO_FEATURES', True).split()
uclibc_cfg('ipv4', distro_features, 'UCLIBC_HAS_IPV4', cnf, rem)
uclibc_cfg('ipv6', distro_features, 'UCLIBC_HAS_IPV6', cnf, rem)
uclibc_cfg('largefile', distro_features, 'UCLIBC_HAS_LFS', cnf, rem)
uclibc_cfg('nls', distro_features, 'UCLIBC_HAS_LOCALE', cnf, rem)
uclibc_cfg('thumb-interwork', distro_features,'USE_BX', cnf, rem)
uclibc_cfg('xattr', distro_features, 'UCLIBC_HAS_XATTR', cnf, rem)
uclibc_cfg('ssp', distro_features, 'UCLIBC_HAS_SSP', cnf, rem)
uclibc_cfg('argp', distro_features, 'UCLIBC_HAS_ARGP', cnf, rem)
uclibc_cfg('libc-posix-clang-wchar', distro_features,'UCLIBC_HAS_WCHAR', cnf, rem)
return "\n".join(cnf), "\n".join(rem)
# X, Y = ${@features_to_uclibc_settings(d)}
# unfortunately doesn't seem to work with bitbake, workaround:
def features_to_uclibc_conf(d):
cnf, rem = features_to_uclibc_settings(d)
return cnf
def features_to_uclibc_del(d):
cnf, rem = features_to_uclibc_settings(d)
return rem
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