waf/demos/variants/wscript

129 lines
4.1 KiB
Python

#! /usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2010 (ita)
VERSION='0.0.1'
APPNAME='cc_test'
top = '.'
out = 'build'
"""
General variant system
Call for example:
$ waf configure build_debug build_release clean_debug clean_release
The builds will end in different build folders
note how "bld.variant" is used to detect the current variant
See also playground/remote/wscript for a more specific example
"""
def configure(conf):
conf.setenv('debug')
conf.load('compiler_c')
conf.define("A", 1)
conf.define("B", 1.1)
conf.define("C", "1.1e19", quote=False)
# the configuration file must be written in each variant
conf.write_config_header('debug/config.h', remove=False)
conf.setenv('release', env=conf.env.derive()) # start with a copy instead of a new env
conf.env.CFLAGS = ['-O2']
conf.options.prefix = '/opt' # warning: this changes the options globally
conf.load('compiler_c')
conf.define('E', 1)
conf.write_config_header('release/config.h')
def build(bld):
# cleaning from the top-level directory might remove
# the file 'config.h' from the variants, so we
# are forcing the use of *debug or *release commands
#
# the config set 'debug' is loaded automatically when the 'debug' variant is used
if not bld.variant:
bld.fatal('Call "waf build_debug" or "waf build_release", and read the comments in the wscript file!')
# the includes='.' add the build directory path to the command arguments
# (look at the -I flags by using waf -v)
bld.program(source='main.c', target='app', includes='.')
# To use multiple compilers at once, either:
#
# * use a particular environment from the configuration:
# bld.env = bld.all_envs['debug']
# bld.program(source='main.c', target='app2', includes='.')
# * add an 'env' parameter to a particular task generator:
# bld.program(..., env=bld.all_envs['release'].derive())
def options(opt):
opt.load('compiler_c')
def init(ctx):
from waflib.Build import BuildContext, CleanContext, InstallContext, UninstallContext
for x in 'debug release'.split():
for y in (BuildContext, CleanContext, InstallContext, UninstallContext):
name = y.__name__.replace('Context','').lower()
class tmp(y):
cmd = name + '_' + x
variant = x
def buildall(ctx):
import waflib.Options
for x in ('build_debug', 'build_release'):
waflib.Options.commands.insert(0, x)
## if you work on "debug" 99% of the time, here is how to re-enable "waf build":
#for y in (BuildContext, CleanContext, InstallContext, UninstallContext):
# class tmp(y):
# variant = 'debug'
# you may also set 'win32/debug' instead of 'debug' (waf 1.6.9)
# the commands will be "build_win32/debug" or "build_win32/release"
# in this case you may want to modify Options.commands in this "init" function
# --------------------------
# or, if you want to memorize the default variant and just type "waf",
#
#def options(opt):
# opt.load('compiler_c')
#def init(ctx):
# from waflib import ConfigSet, Options
# env = ConfigSet.ConfigSet()
# try:
# env.load('build/c4che/foo.txt')
# except:
# the_variant = 'debug'
# else:
# the_variant = env.the_variant or debug
#
# if getattr(Options.options, 'the_variant', ''):
# if Options.options.the_variant != the_variant:
# the_variant = env.the_variant = Options.options.the_variant
# env.store('build/c4che/foo.txt')
#
# for y in (BuildContext, CleanContext, InstallContext, UninstallContext):
# class tmp(y):
# variant = the_variant
# --------------------------
# Or, if you like to have a command-line flag
# - add ctx.load('variant') to options and init functions
# - add --variant=<name of the variant> to the command line
#def options(ctx):
# ctx.add_option('--variant', action='store', default='', help='set the variant name')
#def init(ctx):
# from waflib.Options import options
# from waflib.Build import BuildContext, CleanContext, InstallContext, UninstallContext
# from waflib.Configure import ConfigurationContext
# for y in (BuildContext, CleanContext, InstallContext, UninstallContext, ConfigurationContext):
# name = y.__name__.replace('Context','').lower()
# class tmp(y):
# cmd = name
# variant = options.variant
#