[Scons-users] Newbie questions

Thu Apr 27 01:40:17 EDT 2017

Glad you figured it out :)

On Wed, Apr 26, 2017 at 9:06 PM, Bill Deegan <bill at baddogconsulting.com> wrote:
> 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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