Squashed 'waflib/' content from commit 391d285

git-subtree-dir: waflib
git-subtree-split: 391d2853c6c97efc90e466f187675e8155c866d6

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()