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# following code modifies these definitions in the gcc config
# MULTILIB_OPTIONS
# MULTILIB_DIRNAMES
# MULTILIB_OSDIRNAMES
# GLIBC_DYNAMIC_LINKER32
# GLIBC_DYNAMIC_LINKER64
# GLIBC_DYNAMIC_LINKERX32
# GLIBC_DYNAMIC_LINKERN32
# For more information on use of these variables look at these files in the gcc source code
# gcc/config/i386/t-linux64
# gcc/config/mips/t-linux64
# gcc/config/rs6000/t-linux64
# gcc/config/i386/linux64.h
# gcc/config/mips/linux64.h
# gcc/config/rs6000/linux64.h
python gcc_multilib_setup() {
import re
import shutil
import glob
srcdir = d.getVar('S', True)
builddir = d.getVar('B', True)
src_conf_dir = '%s/gcc/config' % srcdir
build_conf_dir = '%s/gcc/config' % builddir
bb.utils.remove(build_conf_dir, True)
ml_globs = ('%s/*/t-linux64' % src_conf_dir,
'%s/*/linux64.h' % src_conf_dir)
# copy the target multilib config files to ${B}
for ml_glob in ml_globs:
for fn in glob.glob(ml_glob):
rel_path = os.path.relpath(fn, src_conf_dir)
parent_dir = os.path.dirname(rel_path)
bb.utils.mkdirhier('%s/%s' % (build_conf_dir, parent_dir))
bb.utils.copyfile(fn, '%s/%s' % (build_conf_dir, rel_path))
multilibs = (d.getVar('MULTILIB_VARIANTS', True) or '').split()
if not multilibs:
return
mlprefix = d.getVar('MLPREFIX', True)
pn = d.getVar('PN', True)
if ('%sgcc' % mlprefix) != pn and (not pn.startswith('gcc-cross-canadian')):
return
def write_config(root, files, options, dirnames, osdirnames):
for ml_conf_file in files:
with open(root + '/' + ml_conf_file, 'r') as f:
filelines = f.readlines()
# recreate multilib configuration variables
substs = [
(r'^(\s*(MULTILIB_OPTIONS\s*=).*)$', r'\2 %s' % '/'.join(options)),
(r'^(\s*MULTILIB_OPTIONS\s*\+=.*)$', ''),
(r'^(\s*(MULTILIB_DIRNAMES\s*=).*)$', r'\2 %s' % ' '.join(dirnames)),
(r'^(\s*MULTILIB_DIRNAMES\s*\+=.*)$', ''),
(r'^(\s*(MULTILIB_OSDIRNAMES\s*=).*)$', r'\2 %s' % ' '.join(osdirnames)),
(r'^(\s*MULTILIB_OSDIRNAMES\s*\+=.*)$', ''),
]
for (i, line) in enumerate(filelines):
for subst in substs:
line = re.sub(subst[0], subst[1], line)
filelines[i] = line
with open(root + '/' + ml_conf_file, 'w') as f:
f.write(''.join(filelines))
def write_headers(root, files, libdir32, libdir64, libdirx32, libdirn32):
def wrap_libdir(libdir):
if libdir.find('SYSTEMLIBS_DIR') != -1:
return libdir
else:
return '"/%s/"' % libdir
for ml_conf_file in files:
with open(root + '/' + ml_conf_file, 'r') as f:
filelines = f.readlines()
# replace lines like
# #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
# by
# #define GLIBC_DYNAMIC_LINKER32 "/lib/" "ld-linux.so.2"
# this is needed to put the correct dynamic loader path in the generated binaries
substs = [
(r'^(#define\s*GLIBC_DYNAMIC_LINKER32\s*)(\S+)(\s*\".*\")$',
r'\1' + wrap_libdir(libdir32) + r'\3'),
(r'^(#define\s*GLIBC_DYNAMIC_LINKER64\s*)(\S+)(\s*\".*\")$',
r'\1' + wrap_libdir(libdir64) + r'\3'),
(r'^(#define\s*GLIBC_DYNAMIC_LINKERX32\s*)(\S+)(\s*\".*\")$',
r'\1' + wrap_libdir(libdirx32) + r'\3'),
(r'^(#define\s*GLIBC_DYNAMIC_LINKERN32\s*)(\S+)(\s*\".*\")$',
r'\1' + wrap_libdir(libdirn32) + r'\3'),
]
for (i, line) in enumerate(filelines):
for subst in substs:
line = re.sub(subst[0], subst[1], line)
filelines[i] = line
with open(root + '/' + ml_conf_file, 'w') as f:
f.write(''.join(filelines))
gcc_target_config_files = {
'x86_64' : ['gcc/config/i386/t-linux64'],
'i586' : ['gcc/config/i386/t-linux64'],
'mips' : ['gcc/config/mips/t-linux64'],
'powerpc' : ['gcc/config/rs6000/t-linux64'],
}
gcc_header_config_files = {
'x86_64' : ['gcc/config/i386/linux64.h'],
'i586' : ['gcc/config/i386/linux64.h'],
'mips' : ['gcc/config/mips/linux64.h'],
'powerpc' : ['gcc/config/rs6000/linux64.h'],
}
target_arch = (d.getVar('TARGET_ARCH_MULTILIB_ORIGINAL', True) if mlprefix
else d.getVar('TARGET_ARCH', True))
if target_arch not in gcc_target_config_files:
bb.warn('gcc multilib setup is not supported for TARGET_ARCH=' + target_arch)
return
libdir32 = 'SYSTEMLIBS_DIR'
libdir64 = 'SYSTEMLIBS_DIR'
libdirx32 = 'SYSTEMLIBS_DIR'
libdirn32 = 'SYSTEMLIBS_DIR'
target_config_files = gcc_target_config_files[target_arch]
header_config_files = gcc_header_config_files[target_arch]
ml_list = ['DEFAULTTUNE_MULTILIB_ORIGINAL' if mlprefix else 'DEFAULTTUNE']
mltunes = [('DEFAULTTUNE_virtclass-multilib-%s' % ml) for ml in multilibs]
if mlprefix:
mlindex = 0
for ml in multilibs:
if mlprefix.startswith(ml):
break
mlindex += 1
ml_list.extend(mltunes[:mlindex] + ['DEFAULTTUNE'] + mltunes[(mlindex + 1):])
else:
ml_list.extend(mltunes)
options = []
dirnames = []
osdirnames = []
optsets = []
for ml in ml_list:
tune = d.getVar(ml, True)
if not tune:
bb.warn("%s doesn't have a corresponding tune. Skipping..." % ml)
continue
tune_parameters = get_tune_parameters(tune, d)
tune_baselib = tune_parameters['baselib']
if not tune_baselib:
bb.warn("Tune %s doesn't have a baselib set. Skipping..." % tune)
continue
if tune_baselib == 'lib64':
libdir64 = tune_baselib
elif tune_baselib == 'libx32':
libdirx32 = tune_baselib
elif tune_baselib == 'lib32':
libdirn32 = tune_baselib
elif tune_baselib == 'lib':
libdir32 = tune_baselib
else:
bb.error('Unknown libdir (%s) of the tune : %s' % (tune_baselib, tune))
# take out '-' mcpu='s and march='s from parameters
options.append(re.sub(r'mcpu=[^ ]+ *', '',
re.sub(r'march=[^ ]+ *', '',
re.sub(r' +\-+', ' ',
re.sub(r'^ *\-+', '', tune_parameters['ccargs'])))))
if tune_baselib == 'lib':
dirnames.append('32') # /lib => 32bit lib
else:
dirnames.append(tune_baselib.replace('lib', ''))
osdirnames.append('../' + tune_baselib)
if len(options) > 1:
for optstr in options:
optsets.append(optstr.split())
#get common options present in all the tune parameters
common_opt_set = set.intersection(*map(set, optsets))
#common options will be added at the end of the options string only once
if (len(common_opt_set) > 0):
rex = re.compile(''.join(['\\b(', '|'.join(common_opt_set), ')\\W']), re.I)
options = [rex.sub("", optstr) for optstr in options]
options = [optstr.strip() for optstr in options]
options[len(options)-1] = ' '.join((options[len(options)-1], ' '.join(common_opt_set)))
write_config(builddir, target_config_files, options, dirnames, osdirnames)
write_headers(builddir, header_config_files, libdir32, libdir64, libdirx32, libdirn32)
}
gcc_multilib_setup[cleandirs] = "${B}/gcc/config"
EXTRACONFFUNCS += "gcc_multilib_setup"
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