[Scons-users] Pass multiple build flags on the command line

[Bertrand Marc]

Hi,

Thanks for your answer. Could you please explain why the list of flags
is the preferred choice ?

Unfortunately, I am trying to build the pingus package for Debian,
that's why flags must be passed at build/configure time. I can't write
the flags in the Sconstruct file, I must pass them to scons somehow and
I am looking for the best way to do it.

Thanks,
Bertrand

Le 09/08/2014 18:13, William Blevins a écrit :
> You really should use *env.Append( [ '-g', '-O2'] )* instead.  You may
> want to reconsider who your commandline arguments are being handled.
> 
> -William
> 
> 
> On Sat, Aug 9, 2014 at 10:00 AM, Bertrand Marc <beberking at gmail.com
> <mailto:beberking at gmail.com>> wrote:
> 
>     Dear Scons users,
> 
>     I am trying to build pingus with custom build flags. I'd like to pass
>     two flags to g++ (-g -O2), so I launch the following:
>     scons CXXFLAGS='-g -O2'
> 
>     Unfortunately it fails because the Sconstruct file appends
>     ["-std=c++0x"] after CXXFLAGS and env.Append doesn't mix well lists and
>     strings. I get the following error:
>     g++ -o .sconf_temp/conftest_1.o -c "-g O2" -std=c++0x
>     -isystem/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT
>     .sconf_temp/conftest_1.cpp
>     cc1plus: error: unrecognised debug output level " O2"
>     scons: Configure: failed
> 
>     You can see the issue: my build flags are between "".
> 
>     Of course I can change the Sconstruct file to make CXXFLAGS a string
>     instead of a list, but is it the right solution ? Are there any downside
>     to using strings instead of lists for buildflags ? Is there a way to
>     pass a list of flags to the command line ?
> 
>     You'll find a minimal Sconstruct file based on the pingus' one. You can
>     test it with the -c target easily.
> 
>     Thanks for your answer,
>     Bertrand
> 
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> 
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