[Scons-users] Issue: using Replace to replace ENV PATH

[Bill Deegan]

Tony,

Not sure how you crafted this email, but it's almost unreadable due to code
formatting in very narrow windows..
can you resend it all in plain text?

-Bill

On Sun, Jan 27, 2019 at 11:02 PM Tony Peter Long <tony.peterlong at nxp.com>
wrote:

> Hello all.
>
>
>
> I am a new SCons user as well as new to Open Source development in
> general, so please forgive me if I’m missing some etiquette with this mail,
> but I have a minor issue when using the *Replace* method to replace *ENV
> PATH* as follows:
>
>
>
> PATH = {'PATH' : ['C:/cygwin/bin']}
>
> env = Environment()
>
> env.Replace(ENV = PATH)
>
> env.Replace(CXX = 'g++')
>
> env.Replace(CC = 'gcc')
>
> print "PATH = ", env['ENV']
>
> print "CXX = ", env['CXX']
>
> print "CC = ", env['CC']
>
> env.Program('helloworld.cxx')
>
> gives:
>
> scons: warning: No version of Visual Studio compiler found - C/C++
> compilers most likely not set correctly
>
> File "D:\tony\SConstruct", line 2, in <module>
>
> PATH =  {'PATH': ['C:/cygwin/bin']}
>
> CXX =  g++
>
> CC =  gcc
>
>
>
> scons: warning: No version of Visual Studio compiler found - C/C++
> compilers most likely not set correctly
>
> File "C:\Python27\Scripts\scons.py", line 204, in <module>
>
> g++ /Fohelloworld.obj /c helloworld.cxx /TP /nologo
>
> g++: error: /Fohelloworld.obj: No such file or directory
>
> g++: error: /c: No such file or directory
>
> g++: error: /TP: No such file or directory
>
> g++: error: /nologo: No such file or directory
>
> scons: *** [helloworld.obj] Error 1
>
>
>
> Whereas:
>
> PATH = {'PATH' : ['C:/cygwin/bin']}
>
> env = Environment(ENV = PATH)
>
> # env.Replace()
>
> env.Replace(CXX = 'g++')
>
> env.Replace(CC = 'gcc')
>
> print "PATH = ", env['ENV']
>
> print "CXX = ", env['CXX']
>
> print "CC = ", env['CC']
>
> env.Program('helloworld.cxx')
>
> gives:
>
> scons: Reading SConscript files ...
>
> PATH =  {'PATH': ['C:/cygwin/bin']}
>
> CXX =  g++
>
> CC =  gcc
>
> scons: done reading SConscript files.
>
> scons: Building targets ...
>
>
>
> scons: warning: No version of Visual Studio compiler found - C/C++
> compilers most likely not set correctly
>
> File "C:\Python27\Scripts\scons.py", line 204, in <module>
>
> g++ -o helloworld.o -c helloworld.cxx
>
> g++ -o helloworld.exe helloworld.o
>
> scons: done building targets.
>
>
>
> I’m not particularly tied to the first implementation, so using the second
> method suits me just fine. I was just wondering if this is intended, and if
> so, why?
>
>
>
> Regards,
>
> Tony Long.
>
>
> _______________________________________________
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>
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