[Scons-users] scons adds option -KPIC also for gcc/g++ on platform solarisx86

[Bill Deegan]

You're using an ancient version of SCons.
Can you update to python 3.5+ and try SCons 4.1?
I think we addressed this at some point since 2.5.1
You can check the CHANGES.txt

On Fri, May 21, 2021 at 6:39 AM Mats Wichmann <mats at wichmann.us> wrote:

> On 5/21/21 2:49 AM, ajusic at gmx.de wrote:
> > Dear scons maintainer,
> > I didn't find any workarounds or hints or bug entires for scons on
> > stackoverflow or openhub or somewhere else regarding the problem that
> > scons adds -KPIC compiler option even for gcc/g++ compiler which leads
> > to the error with message
> > "g++: error: unrecognized command line option '-KPIC'
> > -KPIC was introduced with scons 0.96.91 and is valid for sun compiler
> > suncc, but not for gcc.
> > My flags are:
> > env['CCFLAGS']   += ' -m64 -DSOLARIS -D_M_IX86 -D_REENTRANT
> > -D_POSIX_PTHREAD_SEMANTICS -mfpmath=387 -fPIC -std=c99 '
> > env['CXXFLAGS']  += ''
> > env['LINKFLAGS']   = ' -lsocket -m64 -fPIC '
> > env['SHLINKFLAGS'] = ' -shared -m64 '
> > env['SHCXXFLAGS']  = ' -shared -m64 '
> > env['SHCXX']       = ' g++ '
> > Platform is solaris x86 with Oracle Corporation SunOS 5.10 Generic Patch
> > January 2005
> > gcc 5.5.0
> > scons v2.5.1.rel_2.5.1
> > ld: Software Generation Utilities - Solaris Link Editors: 5.10-1.1514
> > Please let me know if there is any workaround.
>
> Can you just rewrite SHCCFLAGS and SHCXXFLAGS after the environment is
> created? You seem to be doing SHCXXFLAGS already from the above.
>
> You can print them out to see what they get set to as a debugging step,
> if you haven't already, Would expect these to look like:
>
> SHCCFLAGS: ['$CCFLAGS', '-KPIC']
> SHCXXFLAGS: ['$CXXFLAGS', '-KPIC']
>
> You can just *set* them, you don't have to add to the existing, but do
> use the parametereized versions of CCFLAGS and CXXFLAGS so those will be
> correctly expanded and you don't have to repeat what was assigned to the
> not-shared versions. You can assign directly like you do above or use
> env.Replace, e.g.:
>
> env.Replace(SHCCFLAGS=['$CCFLAGS', '-fPIC'])
>
> (or whatever value you actually need)
>
> or replace actually in the list, perhaps like:
>
> try:
>      idx = env['SHCCFLAGS'].index('-KPIC')
> except ValueError:
>      pass
> else:
>      env['SHCCFLAGS'][idx] = '-fPIC'
>
>
> (if the above look a little more complicated than might be needed: the
> CCFLAGS type variables are initialized using an internal type,
> SCons.Util.CLVar, which is not mentioned in the documentation (sigh),
> it's a list but with special rules for strings with spaces on creation
> and addition so those are turned into lists and don't get type clashes).
> That's why the sun* tools do this kind of thing if you look in the
> source code:
>
> env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS -KPIC')
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