如何在 waf

问题描述

我想在 Windows 操作系统中为不同的项目使用不同的 tricore-gcc.exe

两个 tricore-gcc.exe 位于以下路径中，但不在 PATH 中：

• C:\HighTec\toolchains\tricore\v4.6.3.0\bin\tricore-gcc.exe
• C:\HighTec\toolchains\tricore\v4.9.2.0\bin\tricore-gcc.exe

我的问题是如何在waf中进行配置？

compiler_c 是否只搜索 msvc、gcc 和 clang？

感谢您的任何建议！

（我在 Stackoverflow 中搜索过，例如 Specify different compilers in waf 但我没有找到有关如何在 Windows 中设置绝对路径的答案）

我的wscript：

def options(opt):
    print("start opt ------------------")
    opt.load('compiler_c')

def configure(conf):
    # here we are in default variant/env
    # we load the default compiler,probably gcc
    conf.load('compiler_c')

    # config for tricore 4.6.3 variant
    print("start ------------------")
    conf.setenv('t463')
    conf.env.CC = ['C:\HighTec\toolchains\tricore\v4.6.3.0\bin\tricore-gcc.exe']

    conf.load('compiler_c')

    # config for tricore 4.9.2 variant
    print("start ------------------")
    conf.setenv('t492')
    conf.env.CC = ['C:\HighTec\toolchains\tricore\v4.9.2.0\bin\tricore-gcc.exe']

    conf.load('compiler_c')

    # back to default config
    conf.setenv('')

def build(bld):

    bld.program(source = 'main.c',target = 'myexe')

# this create variants commands and build directories

from waflib.Build import (
    BuildContext,CleanContext,InstallContext,UninstallContext,)

for variant in ['t463','t492']:
    for context in [BuildContext,UninstallContext]:

        name = context.__name__.replace('Context','').lower()

        class tmp(context):
            cmd = name + '_' + variant
            variant = variant

我测试了一下，得到了结果：

D:\CX\15_waf\test1>python waf configure

start opt ------------------
Setting top to                           : D:\CX\15_waf\test1
Setting out to                           : D:\CX\15_waf\test1\build
Checking for 'msvc' (C compiler)         : not found
Checking for 'gcc' (C compiler)          : not found
Checking for 'clang' (C compiler)        : not found
Could not configure a C compiler!
(complete log in D:\CX\15_waf\test1\build\config.log)

config.log：

# project  configured on Tue Dec 29 14:42:29 2020 by
# waf 2.0.21 (abi 20,python 30803f0 on win32)
# using waf configure
#

----------------------------------------
Setting top to D:\CX\15_waf\test1
----------------------------------------
Setting out to D:\CX\15_waf\test1\build
----------------------------------------
Checking for 'msvc' (C compiler)
['C:\\Program Files (x86)\\Microsoft Visual Studio\\Installer\\vswhere.exe','-products','*','-legacy','-format','json']
from D:\CX\15_waf\test1: msvc: Impossible to find a valid architecture for building [] - [] 
not found
----------------------------------------
Checking for 'gcc' (C compiler)
find program=['gcc','cc'] paths=['C:\\Testwell\\CTC','C:\\Java\\j2sdk1.4.2_11\\bin','C:\\Windows\\system32','C:\\Windows','C:\\Windows\\System32\\Wbem','C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\','C:\\Program Files\\Intel\\WiFi\\bin\\','C:\\Program Files\\Common Files\\Intel\\WirelessCommon\\','C:\\Program Files (x86)\\Common Files\\ETAS\\3rdParty1.0','C:\\Program Files (x86)\\Toolbase Client','C:\\Users\\xia.chen\\AppData\\Local\\Programs\\Microsoft VS Code\\bin','C:\\Users\\xia.chen\\AppData\\Local\\Programs\\Git\\cmd','C:\\HighTec\\toolchains\\tricore\\v4.9.2.0\\bin','D:\\tools\\python38','D:\\tools\\python38\\Scripts','C:\\HighTec\\toolchains\\tricore\\v4.9.2.0\\bin'] var='CC' -> None
from D:\CX\15_waf\test1: Could not find the program ['gcc','cc']
not found
----------------------------------------
Checking for 'clang' (C compiler)
find program=['clang'] paths=['C:\\Testwell\\CTC','C:\\HighTec\\toolchains\\tricore\\v4.9.2.0\\bin'] var='CC' -> None
from D:\CX\15_waf\test1: Could not find the program ['clang']
not found
from D:\CX\15_waf\test1: Could not configure a C compiler!

解决方法

是的，waf 只检测在 compiler_c 中定义的受支持的编译器。

如果您的编译器“兼容”，因为 clang 与 gcc 兼容（即它的命令行工作相同），那么您只需要定义 CC：

from waflib import Logs

# this is to check only for gcc-like compiler,on win32,compiler_c begins with msvc
from waflib.Tools.compiler_c import c_compiler
c_compiler['win32'] = ['gcc']

def options(opt):
    opt.load('compiler_c')

def configure(conf):

    conf.setenv('t463')
    conf.env.CC = ['c:/toolchains/tricore/v4.6.3.0/bin/tricore-gcc.exe']
    conf.load('compiler_c')

    conf.setenv('t492')
    conf.env.CC = ['c:/toolchains/tricore/v4.9.2.0/bin/tricore-gcc.exe']
    conf.load('compiler_c')

def build(bld):

    Logs.info("Using compiler {}".format(bld.env.CC))
    bld.program(source = 'main.c',target = 'myexe')

注意：我在 Linux 上测试过，没有可用的 win32 box :)

要检测新的“不兼容”编译器，您必须执行以下操作：

from waflib.Tools.compiler_c import c_compiler
c_compiler['win32'] = ['tricore','msvc','gcc']

def options(opt):
    opt.load('compiler_c')
def configure(cnf):
    cnf.load('compiler_c')
def build(bld):
    bld.program(source='main.c',target='myexe')

并定义一个tricore工具来检测编译器：

# from waflib/Tools/clang.py

from waflib.Tools import ccroot,ar,gcc
from waflib.Configure import conf

@conf
def find_tricore(conf):
    cc = conf.find_program('tricore',var='CC')
    conf.get_cc_version(cc)
    conf.env.CC_NAME = 'tricore'

def configure(conf):
    conf.find_tricore()
    conf.find_ar()
    conf.gcc_common_flags()
    conf.gcc_modifier_platform()
    conf.cc_load_tools()
    conf.cc_add_flags()
    conf.link_add_flags()

对于像 gcc.py 这样的编译器，您可以查看 clang.py、suncc.py、icc.py 或 gcc。查看 msvc.py 以获取与 gcc 完全不同的编译器。