[Scons-users] Newbie questions

Bill Deegan bill at baddogconsulting.com
Wed Apr 26 21:06:52 EDT 2017 

Hmm.
I wouldn't expect that to work..
,'s not a path separator.

should be a python list ['a','b','c']..
-Bill

On Wed, Apr 26, 2017 at 11:38 AM, <syost at triad.rr.com> wrote:

> The former:  ('include1,include2')
>
>
> ---- Bill Deegan <bill at baddogconsulting.com> wrote:
> > do you mean
> > env.Environment(CPPPATH='include1,include2')
> > or
> > env.Environment(CPPPATH=['include1','include2'])
> > ?
> >
> > On Wed, Apr 26, 2017 at 11:10 AM, <syost at triad.rr.com> wrote:
> >
> > > Thanks!   The "-I." was indeed being added by the existence of my
> include
> > > (Add my basedir and '-I.' shows up in the gcc -v output, remove my
> include
> > > and it goes away).
> > >
> > > But..
> > >
> > > Your usage of the phrase "environment" made me realize that maybe I
> forgot
> > > to append the includes in the package level SConscript . But DRAT!   I
> had
> > > already done that.   But I noticed I  done it different.   So I
> changed it
> > > to the way I did it in the project level SConscript and viol'a! it
> worked.
> > >  So to recap
> > >
> > > env.Environment(CPPPATH='include1,include2') did NOT work in my
> package
> > > level SConscript
> > >
> > > but
> > >
> > > MYINCLUDE=['include1',include2']
> > > env=Environment()
> > > env.Append(CPPPATH=MYINCLUDE) DID work
> > >
> > >
> > > Also.....
> > >
> > >
> > > This custom builder only processed my first *.sc file
> > >
> > >      env.UDBPrecompile(Glob('*.sc')
> > >
> > > But this worked worked perfect:
> > >
> > > for filename in Glob('*.sc'):
> > >      env.UDBPrecompile(filename)
> > >
> > > I don't understand why (remember, I'm just just a python wannabe).
>  Can
> > > anyone explain why?
> > >
> > >
> > > Thanks!!!!!!
> > >
> > > ---- William Blevins <wblevins001 at gmail.com> wrote:
> > > > That may not be a substitution. That is the default CPPPATH, so it
> may be
> > > > that you aren't passing through the correct env. SCons will not
> modify
> > > abs
> > > > paths to be relative to my knowledge.
> > > >
> > > > On Apr 26, 2017 10:22 AM, <syost at triad.rr.com> wrote:
> > > >
> > > > > Sorry for the delay, but I doubled down on reviewing the generated
> > > files
> > > > > and found that while they will walk the repository and build
> > > > > anything/everything in sight, (or I can specify a package), it
> will not
> > > > > walk for the SConscript files.   You have to specify them
> individually
> > > in a
> > > > > python list of what are considered "source" directories.   My lack
> of
> > > > > python experience kept me from noticing that initially.  Some code
> to
> > > do
> > > > > that should be simple enough.
> > > > >
> > > > > I am now struggling with the  next hurdle we ran across in some
> > > packages:
> > > > > gcc not finding some include files properly.  Something in the
> Append
> > > step:
> > > > >
> > > > > INCLUDES = ['project/base', ...some more includes ]
> > > > > env.Append(CPPPATH=INCLUDES)
> > > > >
> > > > > is converting "/project/base" to "." .   In other words the gcc
> command
> > > > > has "-I." instead of "-I/project/base"
> > > > >
> > > > > That substitution seems to be tripping up any qualified include
> that is
> > > > > not absolute to the root of the filesystem(like
> > > /opt/openssl/include/des.h
> > > > > works), or is not a simple <file.h> or "file.h"(which both work).
> In
> > > other
> > > > > words, its tripping up any include that is relative to the project
> > > base(ie
> > > > > #include <com/XXXX/ss/functionalarea/program1/file.h> which does
> > > indeed
> > > > > exist in /project/base/com/XXXX/ss/functionalarea/program1/ but
> gcc
> > > can't
> > > > > find).
> > > > >
> > > > > Any ideas would be welcome but I'm sure its still my inexperience
> with
> > > > > python and scons so I will continue digging to this.
> > > > >
> > > > > Thanks!
> > > > >
> > > > > ---- Bill Deegan <bill at baddogconsulting.com> wrote:
> > > > > > Can you pastebin the generated SConstruct and a sample(s) of
> > > SConscripts?
> > > > > > -Bill
> > > > > >
> > > > > > On Sat, Apr 22, 2017 at 4:28 AM, <syost at triad.rr.com> wrote:
> > > > > >
> > > > > > > Thanks Bill,
> > > > > > >
> > > > > > > Not near the laptop right now but Python 2.7 I believe installs
> > > with
> > > > > > > Ubuntu 16.04 which I am running.   I know it is not python 3.x
> > > because
> > > > > you
> > > > > > > have to type "python3" to run it.
> > > > > > >
> > > > > > > The underlying packages have nothing in terms of SCons
> artifacts -
> > > > > just to
> > > > > > > the top repository level.   I then added an SConscript to a
> single
> > > > > package
> > > > > > > as a guinea pig while I wrote a builder for a database
> > > precompilation
> > > > > > > step.   This never was read.   Here is the directory structure:
> > > > > > >
> > > > > > > myrepo   S*.py* files and SConstruct and SConscript (as
> generated
> > > by
> > > > > > > SConsolidator) are here.
> > > > > > > ------com
> > > > > > > ----------company
> > > > > > > -----------------ss
> > > > > > > -------------------functionalarea1
> > > > > > > ----------------------------------program11    (trying to add
> > > > > SConscript
> > > > > > > here for special pre-compile steps)
> > > > > > > ----------------------------------program.1N
> > > > > > > -------------------functionalarea2
> > > > > > > ----------------------------------program21
> > > > > > > ----------------------------------program.2N
> > > > > > > .....and so on.......
> > > > > > >
> > > > > > >
> > > > > > > If my PWD is "myrepo" and I type "scons -k" I actually get
> lots of
> > > > > > > successful package builds through the tree (or packages fail
> for
> > > > > > > predictable and understandable reasons). In this scenario
> program11
> > > > > > > compiles like any other but fails to include my special
> SConscript
> > > > > > > steps(and print statements prove it is never read).   Also, if
> I
> > > type
> > > > > scons
> > > > > > > -k com/company/ss/functionalarea1/program11 it will build fine
> > > too -
> > > > > but
> > > > > > > once again it builds without including my SConscript
> > > > > > >
> > > > > > > If I change my PWD to "program11", add a SConstruct, and then
> type
> > > > > "scons
> > > > > > > -k" my SConscript is properly read.   But of course, then I
> would
> > > have
> > > > > to
> > > > > > > build separately for several hundred packages since most will
> have
> > > > > special
> > > > > > > linking, special compiler flags, special DB steps, or post
> steps(ie
> > > > > perms),
> > > > > > > install directives, etc.  Not ideal and not what I was hoping
> for.
> > > > > > >
> > > > > > >
> > > > > > > Bottom line is the SConstruct generated by SConsolidator at
> the top
> > > > > > > "myrepo" directory seems (again - not a python expert) to
> include
> > > the
> > > > > > > necessary logic to walk the subdirs and call SConscript() for
> each
> > > > > > > SConscript() it finds but they actually seem to be ignored.
> So I
> > > > > figured I
> > > > > > > am doing something wrong and hoped you folks could help.
> > > > > > >
> > > > > > > Thanks in advance!!
> > > > > > >
> > > > > > >
> > > > > > > ---- Bill Deegan <bill at baddogconsulting.com> wrote:
> > > > > > > > Spencer,
> > > > > > > >
> > > > > > > > Greetings and welcome!
> > > > > > > >
> > > > > > > > So the underlying packages already had a SCons based build
> > > system?
> > > > > > > > Or did you generate one for each package and then are trying
> to
> > > wrap
> > > > > them
> > > > > > > > with a SConstruct on top?
> > > > > > > >
> > > > > > > > Also what platform? Which version of python? Which version of
> > > SCons?
> > > > > > > >
> > > > > > > >
> > > > > > > > -Bill
> > > > > > > >
> > > > > > > > On Fri, Apr 21, 2017 at 1:22 PM, Spencer Yost <
> > > syost at triad.rr.com>
> > > > > > > wrote:
> > > > > > > >
> > > > > > > > > I am setting up a new development environment for work,
> and I
> > > am
> > > > > > > seriously
> > > > > > > > > looking at SCons as a replacement for our Frankenstein
> build
> > > system
> > > > > > > that we
> > > > > > > > > currently have. I like what I see so far but I'm having
> some
> > > > > trouble
> > > > > > > > > understanding the underlying architecture.
> > > > > > > > >
> > > > > > > > > Note1:  I have been experimenting quite a bit, and I have
> read
> > > the
> > > > > > > users
> > > > > > > > > guide and man pages
> > > > > > > > >
> > > > > > > > > Note 2:  I'm an experienced C and C++ developer  but I've
> never
> > > > > touched
> > > > > > > > > Python  before.
> > > > > > > > >
> > > > > > > > > Note 3:  Our code base has approximately 10K-15K files,
> found
> > > in
> > > > > > > several
> > > > > > > > > hundred packages in a hierarchical reverse domain
> organization.
> > > > > This
> > > > > > > is
> > > > > > > > > set up in one git repository.
> > > > > > > > >
> > > > > > > > > So I installed Scons on my Ubuntu laptop and SCons builds a
> > > lot of
> > > > > > > > > packages out of box quite nicely.
> > > > > > > > >
> > > > > > > > > But some files and packages need to be treated specially
> before
> > > > > they
> > > > > > > can
> > > > > > > > > be built.   The Sconstruct  file (originally generated by
> > > > > > > SConsolidator in
> > > > > > > > > eclipse) appears like scons will look for sconscript
> files  in
> > > each
> > > > > > > > > individual package, but it doesn't.  Any SConscript file I
> > > place
> > > > > in an
> > > > > > > > > individual package for extra processing, does not appear
> to be
> > > > > read.
> > > > > > > > >
> > > > > > > > > The only way I seem to be able to build a package with an
> > > > > SConscript
> > > > > > > file
> > > > > > > > > is to also create an SConstruct file, and build using that
> > > package
> > > > > as
> > > > > > > my
> > > > > > > > > current base directory.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Am I mistaken? Should I not be able to include a separate
> > > > > SConscript
> > > > > > > file
> > > > > > > > > in each package for the individual needs of the individual
> > > package
> > > > > yet
> > > > > > > > > initiate the build from the top of the hierarchy?
> > > > > > > > >
> > > > > > > > > Thanks in advance!
> > > > > > > > >
> > > > > > > > > PS:  Same thing happens if I try to build from Eclipse with
> > > > > > > SConsolidator.
> > > > > > > > >
> > > > > > > > > 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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