def CHECK_FUNCS_IN(conf,
list,
library,
mandatory=False,
checklibc=False,
headers=None,
link=True,
empty_decl=True,
set_target=True):
"""
check that the functions in 'list' are available in 'library'
if they are, then make that library available as a dependency
if the library is not available and mandatory==True, then
raise an error.
If the library is not available and mandatory==False, then
add the library to the list of dependencies to remove from
build rules
optionally check for the functions first in libc
"""
remaining = TO_LIST(list)
liblist = TO_LIST(library)
# check if some already found
for f in remaining[:]:
if CONFIG_SET(conf, 'HAVE_%s' % f.upper()):
remaining.remove(f)
# see if the functions are in libc
if checklibc:
for f in remaining[:]:
if CHECK_FUNC(conf, f, link=True, headers=headers):
remaining.remove(f)
if remaining == []:
for lib in liblist:
if GET_TARGET_TYPE(conf, lib) != 'SYSLIB' and empty_decl:
SET_TARGET_TYPE(conf, lib, 'EMPTY')
return True
checklist = conf.CHECK_LIB(liblist,
empty_decl=empty_decl,
set_target=set_target)
for lib in liblist[:]:
if not lib in checklist and mandatory:
Logs.error("Mandatory library '%s' not found for functions '%s'" %
(lib, list))
sys.exit(1)
ret = True
for f in remaining:
if not CHECK_FUNC(
conf, f, lib=' '.join(checklist), headers=headers, link=link):
ret = False
return ret
def CHECK_LIB(conf, libs, mandatory=False, empty_decl=True, set_target=True, shlib=False):
'''check if a set of libraries exist as system libraries
returns the sublist of libs that do exist as a syslib or []
'''
fragment= '''
int foo()
{
int v = 2;
return v*2;
}
'''
ret = []
liblist = TO_LIST(libs)
for lib in liblist[:]:
if GET_TARGET_TYPE(conf, lib) == 'SYSLIB':
ret.append(lib)
continue
(ccflags, ldflags, cpppath) = library_flags(conf, lib)
if shlib:
res = conf.check(features='c cshlib', fragment=fragment, lib=lib, uselib_store=lib, ccflags=ccflags, ldflags=ldflags, uselib=lib.upper(), mandatory=False)
else:
res = conf.check(lib=lib, uselib_store=lib, ccflags=ccflags, ldflags=ldflags, uselib=lib.upper(), mandatory=False)
if not res:
if mandatory:
Logs.error("Mandatory library '%s' not found for functions '%s'" % (lib, list))
sys.exit(1)
if empty_decl:
# if it isn't a mandatory library, then remove it from dependency lists
if set_target:
SET_TARGET_TYPE(conf, lib, 'EMPTY')
else:
conf.define('HAVE_LIB%s' % lib.upper().replace('-','_').replace('.','_'), 1)
conf.env['LIB_' + lib.upper()] = lib
if set_target:
conf.SET_TARGET_TYPE(lib, 'SYSLIB')
ret.append(lib)
return ret
