ardupilot/Tools/ardupilotwaf/cxx_checks.py

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# Copyright (C) 2016 Intel Corporation. All rights reserved.
#
# This file is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
WAF Tool that checks cxx parameters, creating the ap_config.h
header file.
This tool needs compiler_cxx to be loaded, make sure you
load them before this tool.
Example::
def configure(cfg):
cfg.load('cxx_checks')
"""
from waflib.Configure import conf
@conf
def ap_common_checks(cfg):
cfg.check(
compiler='cxx',
fragment='''
#include <cmath>
int main() {
return std::isfinite(1.0f);
}''',
define_name="HAVE_CMATH_ISFINITE",
msg="Checking for HAVE_CMATH_ISFINITE",
mandatory=False,
)
cfg.check(
compiler='cxx',
fragment='''
#include <cmath>
int main() {
return std::isinf(1.0f);
}''',
define_name="HAVE_CMATH_ISINF",
msg="Checking for HAVE_CMATH_ISINF",
mandatory=False,
)
cfg.check(
compiler='cxx',
fragment='''
#include <cmath>
int main() {
return std::isnan(1.0f);
}''',
define_name="HAVE_CMATH_ISNAN",
msg="Checking for HAVE_CMATH_ISNAN",
mandatory=False,
)
# NEED_CMATH_FUNCTION_STD_NAMESPACE checks are needed due to
# new gcc versions being more restrictive.
#
# Here we check if we need to add 'using std::function' to
# the function.
#
# Without these checks, in some cases, gcc points this as
# overloads or function duplication in scope.
cfg.check(
compiler='cxx',
fragment='''
#include <math.h>
#include <cmath>
using std::isfinite;
int main() {
return isfinite((double)1);
}''',
define_name="NEED_CMATH_ISFINITE_STD_NAMESPACE",
msg="Checking for NEED_CMATH_ISFINITE_STD_NAMESPACE",
mandatory=False,
)
cfg.check(
compiler='cxx',
fragment='''
#include <math.h>
#include <cmath>
using std::isinf;
int main() {
return isinf((double)1);
}''',
define_name="NEED_CMATH_ISINF_STD_NAMESPACE",
msg="Checking for NEED_CMATH_ISINF_STD_NAMESPACE",
mandatory=False,
)
cfg.check(
compiler='cxx',
fragment='''
#include <math.h>
#include <cmath>
using std::isnan;
int main() {
return isnan((double)1);
}''',
define_name="NEED_CMATH_ISNAN_STD_NAMESPACE",
msg="Checking for NEED_CMATH_ISNAN_STD_NAMESPACE",
mandatory=False,
)
cfg.check(header_name='endian.h', mandatory=False)
cfg.check(header_name='byteswap.h', mandatory=False)
cfg.check(
compiler='cxx',
fragment='''
#include <string.h>
int main() {
const char *s = "abc";
return memrchr((const void *)s, 0, 3) != NULL;
}''',
define_name="HAVE_MEMRCHR",
msg="Checking for HAVE_MEMRCHR",
mandatory=False,
)
@conf
def check_librt(cfg, env):
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if cfg.env.DEST_OS == 'darwin':
return True
ret = cfg.check(
compiler='cxx',
fragment='''
#include <time.h>
int main() {
clock_gettime(CLOCK_REALTIME, NULL);
}''',
msg='Checking for need to link with librt',
okmsg='not necessary',
errmsg='necessary',
mandatory=False,
)
if ret:
return ret
ret = cfg.check(compiler='cxx', lib='rt')
if ret:
env.LIB += cfg.env['LIB_RT']
return ret
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@conf
def check_feenableexcept(cfg):
cfg.check(
compiler='cxx',
fragment='''
#include <fenv.h>
int main() {
return feenableexcept(FE_OVERFLOW | FE_DIVBYZERO);
}''',
msg="Checking for feenableexcept",
define_name="HAVE_FEENABLEEXCEPT",
mandatory=False,
)
@conf
def check_package(cfg, env, libname):
'''use pkg-config to look for an installed library that has a LIBNAME.pc file'''
capsname = libname.upper()
cfg.env.stash()
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if not cfg.check_cfg(package=libname, mandatory=False, global_define=True,
args=['--libs', '--cflags'], uselib_store=capsname):
# Don't even try to link if check_cfg fails
cfg.env.revert()
return False
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if not cfg.check(compiler='cxx',
fragment='''int main() { return 0; }''',
msg='Checking link with %s' % libname,
mandatory=False,
use=capsname):
cfg.env.revert()
return False
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cfg.env.commit()
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# Add to global environment:
# we always want to use the library for all targets
env.LIB += cfg.env['LIB_%s' % capsname]
env.INCLUDES += cfg.env['INCLUDES_%s' % capsname]
env.CFLAGS += cfg.env['CFLAGS_%s' % capsname]
env.LIBPATH += cfg.env['LIBPATH_%s' % capsname]
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return True
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@conf
def check_lttng(cfg, env):
if not cfg.options.enable_lttng:
cfg.msg("Checking for 'lttng-ust':", 'disabled', color='YELLOW')
return False
if cfg.env.STATIC_LINKING:
# lttng-ust depends on libdl which means it can't be used in a static build
cfg.msg("Checking for 'lttng-ust':", 'disabled for static build', color='YELLOW')
return False
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return check_package(cfg, env, 'lttng-ust')
@conf
def check_libiio(cfg, env):
if cfg.env.STATIC_LINKING:
# libiio depends on libdl which means it can't be used in a static build
cfg.msg("Checking for 'libiio':", 'disabled for static build', color='YELLOW')
return False
if cfg.options.disable_libiio:
cfg.msg("Checking for 'libiio':", 'disabled', color='YELLOW')
return False
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return check_package(cfg, env, 'libiio')
@conf
def check_libdl(cfg, env):
if cfg.env.STATIC_LINKING:
# using loadable modules for a static build is not recommended
cfg.msg("Checking for 'libdl':", 'disabled for static build', color='YELLOW')
return False
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ret = cfg.check(compiler='cxx', lib='dl', mandatory=False, global_define=True, define_name='HAVE_LIBDL')
if ret:
env.LIB += cfg.env['LIB_DL']
return ret
@conf
def check_SFML(cfg, env):
if not cfg.options.enable_sfml:
cfg.msg("Checking for SFML graphics:", 'disabled', color='YELLOW')
return False
libs = ['sfml-graphics', 'sfml-window','sfml-system']
for lib in libs:
if not cfg.check(compiler='cxx', lib=lib, mandatory=False,
global_define=True):
cfg.fatal("Missing SFML libraries - please install libsfml-dev")
return False
# see if we need Graphics.hpp or Graphics.h
if not cfg.check(compiler='cxx',
fragment='''#include <SFML/Graphics.hpp>\nint main() {}''', define_name="HAVE_SFML_GRAPHICS_HPP",
msg="Checking for Graphics.hpp", mandatory=False):
if not cfg.check(compiler='cxx', fragment='''#include <SFML/Graphics.h>\nint main() {}''', define_name="HAVE_SFML_GRAPHICS_H",
msg="Checking for Graphics.h", mandatory=False):
cfg.fatal("Missing SFML headers SFML/Graphics.hpp or SFML/Graphics.h")
return False
env.LIB += libs
return True
@conf
def check_SFML_Audio(cfg, env):
if not cfg.options.enable_sfml_audio:
cfg.msg("Checking for SFML audio:", 'disabled', color='YELLOW')
return False
libs = ['sfml-audio']
for lib in libs:
if not cfg.check(compiler='cxx', lib=lib, mandatory=False,
global_define=True):
cfg.fatal("Missing SFML libraries - please install libsfml-dev")
return False
# see if we need Audio.hpp or Audio.h
if not cfg.check(compiler='cxx',
fragment='''#include <SFML/Audio.hpp>\nint main() {}''', define_name="HAVE_SFML_AUDIO_HPP",
msg="Checking for Audio.hpp", mandatory=False):
if not cfg.check(compiler='cxx', fragment='''#include <SFML/Audio.h>\nint main() {}''', define_name="HAVE_SFML_AUDIO_H",
msg="Checking for Audio.h", mandatory=False):
cfg.fatal("Missing SFML headers SFML/Audio.hpp or SFML/Audio.h")
return False
env.LIB += libs
return True