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Diffstat (limited to 'extras/cross_gnu.py')
| -rw-r--r-- | extras/cross_gnu.py | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/extras/cross_gnu.py b/extras/cross_gnu.py new file mode 100644 index 0000000..309f53b --- /dev/null +++ b/extras/cross_gnu.py @@ -0,0 +1,227 @@ +#!/usr/bin/python +# -*- coding: utf-8 vi:ts=4:noexpandtab +# Tool to provide dedicated variables for cross-compilation + +__author__ = __maintainer__ = "Jérôme Carretero <cJ-waf@zougloub.eu>" +__copyright__ = "Jérôme Carretero, 2014" + +""" +This tool allows to use environment variables to define cross-compilation +variables intended for build variants. + +The variables are obtained from the environment in 3 ways: + +1. By defining CHOST, they can be derived as ${CHOST}-${TOOL} +2. By defining HOST_x +3. By defining ${CHOST//-/_}_x + +else one can set ``cfg.env.CHOST`` in ``wscript`` before loading ``cross_gnu``. + +Usage: + +- In your build script:: + + def configure(cfg): + ... + for variant in x_variants: + setenv(variant) + conf.load('cross_gnu') + conf.xcheck_host_var('POUET') + ... + + +- Then:: + + CHOST=arm-hardfloat-linux-gnueabi waf configure + env arm-hardfloat-linux-gnueabi-CC="clang -..." waf configure + CFLAGS=... CHOST=arm-hardfloat-linux-gnueabi HOST_CFLAGS=-g waf configure + HOST_CC="clang -..." waf configure + +This example ``wscript`` compiles to Microchip PIC (xc16-gcc-xyz must be in PATH): + +.. code:: python + + from waflib import Configure + + #from https://gist.github.com/rpuntaie/2bddfb5d7b77db26415ee14371289971 + import waf_variants + + variants='pc fw/variant1 fw/variant2'.split() + + top = "." + out = "../build" + + PIC = '33FJ128GP804' #dsPICxxx + + @Configure.conf + def gcc_modifier_xc16(cfg): + v = cfg.env + v.cprogram_PATTERN = '%s.elf' + v.LINKFLAGS_cprogram = ','.join(['-Wl','','','--defsym=__MPLAB_BUILD=0','','--script=p'+PIC+'.gld', + '--stack=16','--check-sections','--data-init','--pack-data','--handles','--isr','--no-gc-sections', + '--fill-upper=0','--stackguard=16','--no-force-link','--smart-io']) #,'--report-mem']) + v.CFLAGS_cprogram=['-mcpu='+PIC,'-omf=elf','-mlarge-code','-msmart-io=1', + '-msfr-warn=off','-mno-override-inline','-finline','-Winline'] + + def configure(cfg): + if 'fw' in cfg.variant: #firmware + cfg.env.DEST_OS = 'xc16' #cfg.env.CHOST = 'xc16' #works too + cfg.load('c cross_gnu') #cfg.env.CHOST becomes ['xc16'] + ... + else: #configure for pc SW + ... + + def build(bld): + if 'fw' in bld.variant: #firmware + bld.program(source='maintst.c', target='maintst'); + bld(source='maintst.elf', target='maintst.hex', rule="xc16-bin2hex ${SRC} -a -omf=elf") + else: #build for pc SW + ... + +""" + +import os +from waflib import Utils, Configure +from waflib.Tools import ccroot, gcc + +try: + from shlex import quote +except ImportError: + from pipes import quote + +def get_chost_stuff(conf): + """ + Get the CHOST environment variable contents + """ + chost = None + chost_envar = None + if conf.env.CHOST: + chost = conf.env.CHOST[0] + chost_envar = chost.replace('-', '_') + return chost, chost_envar + + +@Configure.conf +def xcheck_var(conf, name, wafname=None, cross=False): + wafname = wafname or name + + if wafname in conf.env: + value = conf.env[wafname] + if isinstance(value, str): + value = [value] + else: + envar = os.environ.get(name) + if not envar: + return + value = Utils.to_list(envar) if envar != '' else [envar] + + conf.env[wafname] = value + if cross: + pretty = 'cross-compilation %s' % wafname + else: + pretty = wafname + conf.msg('Will use %s' % pretty, " ".join(quote(x) for x in value)) + +@Configure.conf +def xcheck_host_prog(conf, name, tool, wafname=None): + wafname = wafname or name + + chost, chost_envar = get_chost_stuff(conf) + + specific = None + if chost: + specific = os.environ.get('%s_%s' % (chost_envar, name)) + + if specific: + value = Utils.to_list(specific) + conf.env[wafname] += value + conf.msg('Will use cross-compilation %s from %s_%s' % (name, chost_envar, name), + " ".join(quote(x) for x in value)) + return + else: + envar = os.environ.get('HOST_%s' % name) + if envar is not None: + value = Utils.to_list(envar) + conf.env[wafname] = value + conf.msg('Will use cross-compilation %s from HOST_%s' % (name, name), + " ".join(quote(x) for x in value)) + return + + if conf.env[wafname]: + return + + value = None + if chost: + value = '%s-%s' % (chost, tool) + + if value: + conf.env[wafname] = value + conf.msg('Will use cross-compilation %s from CHOST' % wafname, value) + +@Configure.conf +def xcheck_host_envar(conf, name, wafname=None): + wafname = wafname or name + + chost, chost_envar = get_chost_stuff(conf) + + specific = None + if chost: + specific = os.environ.get('%s_%s' % (chost_envar, name)) + + if specific: + value = Utils.to_list(specific) + conf.env[wafname] += value + conf.msg('Will use cross-compilation %s from %s_%s' \ + % (name, chost_envar, name), + " ".join(quote(x) for x in value)) + return + + + envar = os.environ.get('HOST_%s' % name) + if envar is None: + return + + value = Utils.to_list(envar) if envar != '' else [envar] + + conf.env[wafname] = value + conf.msg('Will use cross-compilation %s from HOST_%s' % (name, name), + " ".join(quote(x) for x in value)) + + +@Configure.conf +def xcheck_host(conf): + conf.xcheck_var('CHOST', cross=True) + conf.env.CHOST = conf.env.CHOST or [conf.env.DEST_OS] + conf.env.DEST_OS = conf.env.CHOST[0].replace('-','_') + conf.xcheck_host_prog('CC', 'gcc') + conf.xcheck_host_prog('CXX', 'g++') + conf.xcheck_host_prog('LINK_CC', 'gcc') + conf.xcheck_host_prog('LINK_CXX', 'g++') + conf.xcheck_host_prog('AR', 'ar') + conf.xcheck_host_prog('AS', 'as') + conf.xcheck_host_prog('LD', 'ld') + conf.xcheck_host_envar('CFLAGS') + conf.xcheck_host_envar('CXXFLAGS') + conf.xcheck_host_envar('LDFLAGS', 'LINKFLAGS') + conf.xcheck_host_envar('LIB') + conf.xcheck_host_envar('PKG_CONFIG_LIBDIR') + conf.xcheck_host_envar('PKG_CONFIG_PATH') + + if not conf.env.env: + conf.env.env = {} + conf.env.env.update(os.environ) + if conf.env.PKG_CONFIG_LIBDIR: + conf.env.env['PKG_CONFIG_LIBDIR'] = conf.env.PKG_CONFIG_LIBDIR[0] + if conf.env.PKG_CONFIG_PATH: + conf.env.env['PKG_CONFIG_PATH'] = conf.env.PKG_CONFIG_PATH[0] + +def configure(conf): + """ + Configuration example for gcc, it will not work for g++/clang/clang++ + """ + conf.xcheck_host() + conf.gcc_common_flags() + conf.gcc_modifier_platform() + conf.cc_load_tools() + conf.cc_add_flags() + conf.link_add_flags() |