[Scons-users] Missing dependencies

[Bill Deegan]

Or even:

executable=Program(hello.c,LIBS=['shared1', 'shared2'], LIBPATH=[
'variantDir/usr/lib'])

Also are you using VariantDir() or SConscript('blah',variant_dir='...')

You may want to take a read through the user guide.
Here's the section on linking with Libraries..
http://scons.org/doc/production/HTML/scons-user/ch04s02.html

-Bill



On Thu, Nov 30, 2017 at 2:29 PM, Bill Deegan <bill at baddogconsulting.com>
wrote:

> Spencer,
>
> Try this:
> MYLIBS = ['shared1', 'shared2']
> MYLIBPATH = 'variantDir/usr/lib'
> executable=Program(hello.c,LIBS=[MYLIBS], LIBPATH=[MYLIBPATH])
>
>
> On Thu, Nov 30, 2017 at 1:50 PM, Spencer Yost <syost at triad.rr.com> wrote:
>
>> Let me back up and explain so you can make sure I know what I am doing.
>>
>> programdir/SConscript:
>> ~~~~~~~~~~~~~~~~~~~
>>
>> MYLIBS = ['libshared1.so', 'libshared2.so']
>> MYLIBPATH = 'variantDir/usr/lib'
>> executable=Program(hello.c,LIBS=[MYLIBS], LIBPATH=[MYLIBPATH])
>> for eachLib in MYLIBS:
>>    Depends(executable, os.path.join(MYLIBPATH,eachLib)
>>
>> This is stripped down obviously:  I have install functions/custom
>> builders and more.  But you get the idea.  And this works in terms of
>> linking/building and does accurately reflect the need to rebuild
>> "executable" if MYLIB changes.
>>
>> But how do I get SCons to build MYLIB if it is missing?   I have an
>> SConscript for MYLIB.  Your surprise that this doesn't work leads me to
>> believe that my fear was correct:   I am stuck having to read all 1700+
>> SConscript files in my library packages (over 2000 counting executables,
>> automated unit tests, etc) when I start the building the executable.   I
>> can't deal with the huge delay reading that many SConscript files just in
>> case I need to build to build one shared library in the course of building
>> just one executable.
>>
>> I was hoping something along the lines of:
>>
>> for eachLib in MYLIBS:
>>    fullSCPath=findRightSConscript(eachLib)
>>    SConscript(fullSCPath,blah,etc,so on)
>>    Depends(executable, os.path.join(MYLIBPATH,eachLib)
>>
>>
>> But that doesn't work
>>
>> Thanks in advance!!
>>
>> Spencer Yost
>>
>> On Nov 30, 2017, at 3:18 PM, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>> Spencer,
>>
>> That should happen automatically.
>> Can you post an example SConstruct to show the issue you're having?
>>
>> -Bill
>>
>> On Thu, Nov 30, 2017 at 10:21 AM, Spencer Yost <syost at triad.rr.com>
>> wrote:
>>
>>> I am hoping somebody has tackled this before:
>>>
>>> While I can obviously use the depends() function to ensure my target
>>> rebuilds if the dependency changed, I would like some sort of mechanism to
>>> automatically build the dependency if it is missing.
>>>
>>> Is there functionality in Scons for this that I am missing and or
>>> misunderstanding? If not, has someone already built a little extension to
>>> handle this already?
>>>
>>> In my specific use case, I'm looking for a shared library that has not
>>> been built yet. This is a common enough use case that I would like to
>>> handle it automatically if possible.
>>>
>>>
>>> Spencer Yost
>>>
>>>
>>> _______________________________________________
>>> Scons-users mailing list
>>> Scons-users at scons.org
>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>
>>
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>>
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>>
>
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