[Scons-users] Question over the use of powershell in env['SHELL'] or some way to force relative paths

Thu Sep 20 23:48:22 EDT 2018

Take a read of:
https://github.com/SCons/scons/wiki/LongCmdLinesOnWin32

Also, why are you using full paths?
And/or can't you place your SConstruct at the top of your tree?

On Thu, Sep 20, 2018 at 10:10 PM RW via Scons-users <scons-users at scons.org>
wrote:

> Hi,
> I've got another question
> I've recently run into an issue whereby the command I'm trying to run
> within scons / windows exceeds the 8192 path limit
> This is partially due to scons using absolute paths during the build
> phase, possibly due to the way I have the scripts setup
>
> This leaves me with two options
>
> 1. Try to force the use of relative paths within scons
> 2. Try to use powershell as the shell since it seems to not have this issue
>
> The full setup is here
> https://github.com/Grbd-Forks/micropython/tree/scons2
> with the top level script being run under
> micropthon/ports/minimal (this is the only port I've tried setting up so
> far)
>
> The powershell approach nearly works, but seems to ignore the windows PATH
> when searching for the arm gcc compiler I have installed
> ```
> import distutils.spawn
> powershell_path = distutils.spawn.find_executable("powershell.exe")
> env.Replace(SHELL=powershell_path)
> ```
>
> The other approach migh be to force scons to change the absolute path to a
> relative one
> with the below example D:\SourceCode\GitRepos.Forks\micropython\py\mpz.c
> to ..\..\py\mpz.c
> but I'm unsure if theres a way to do that
>
> To give an example of the sort of command line I'm ending up with
> ```
> arm-none-eabi-gcc -E -std=c99 -DNO_QSTR -mthumb -mtune=cortex-m4
> -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
> -fsingle-precision-constant -Wdouble-promotion -Wall -Werror -nostdlib -Os
> -fdata-sections -ffunction-sections -DNDEBUG -I.
> -ID:\SourceCode\GitRepos.Forks\micropython -Ibuild
> D:\SourceCode\GitRepos.Forks\micropython\py\mpstate.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlr.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlrx86.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlrx64.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlrthumb.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlrxtensa.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nlrsetjmp.c
> D:\SourceCode\GitRepos.Forks\micropython\py\malloc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\gc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\pystack.c
> D:\SourceCode\GitRepos.Forks\micropython\py\qstr.c
> D:\SourceCode\GitRepos.Forks\micropython\py\vstr.c
> D:\SourceCode\GitRepos.Forks\micropython\py\mpprint.c
> D:\SourceCode\GitRepos.Forks\micropython\py\unicode.c
> D:\SourceCode\GitRepos.Forks\micropython\py\mpz.c
> D:\SourceCode\GitRepos.Forks\micropython\py\reader.c
> D:\SourceCode\GitRepos.Forks\micropython\py\lexer.c
> D:\SourceCode\GitRepos.Forks\micropython\py\parse.c
> D:\SourceCode\GitRepos.Forks\micropython\py\scope.c
> D:\SourceCode\GitRepos.Forks\micropython\py\compile.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitcommon.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitbc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmbase.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmx64.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitnx64.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmx86.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitnx86.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmthumb.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitnthumb.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitinlinethumb.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmarm.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitnarm.c
> D:\SourceCode\GitRepos.Forks\micropython\py\asmxtensa.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitnxtensa.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitinlinextensa.c
> D:\SourceCode\GitRepos.Forks\micropython\py\formatfloat.c
> D:\SourceCode\GitRepos.Forks\micropython\py\parsenumbase.c
> D:\SourceCode\GitRepos.Forks\micropython\py\parsenum.c
> D:\SourceCode\GitRepos.Forks\micropython\py\emitglue.c
> D:\SourceCode\GitRepos.Forks\micropython\py\persistentcode.c
> D:\SourceCode\GitRepos.Forks\micropython\py\runtime.c
> D:\SourceCode\GitRepos.Forks\micropython\py\runtime_utils.c
> D:\SourceCode\GitRepos.Forks\micropython\py\scheduler.c
> D:\SourceCode\GitRepos.Forks\micropython\py\nativeglue.c
> D:\SourceCode\GitRepos.Forks\micropython\py\stackctrl.c
> D:\SourceCode\GitRepos.Forks\micropython\py\argcheck.c
> D:\SourceCode\GitRepos.Forks\micropython\py\warning.c
> D:\SourceCode\GitRepos.Forks\micropython\py\map.c
> D:\SourceCode\GitRepos.Forks\micropython\py\obj.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objarray.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objattrtuple.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objbool.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objboundmeth.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objcell.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objclosure.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objcomplex.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objdeque.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objdict.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objenumerate.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objexcept.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objfilter.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objfloat.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objfun.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objgenerator.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objgetitemiter.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objint.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objint_longlong.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objint_mpz.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objlist.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objmap.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objmodule.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objobject.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objpolyiter.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objproperty.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objnone.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objnamedtuple.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objrange.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objreversed.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objset.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objsingleton.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objslice.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objstr.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objstrunicode.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objstringio.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objtuple.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objtype.c
> D:\SourceCode\GitRepos.Forks\micropython\py\objzip.c
> D:\SourceCode\GitRepos.Forks\micropython\py\opmethods.c
> D:\SourceCode\GitRepos.Forks\micropython\py\sequence.c
> D:\SourceCode\GitRepos.Forks\micropython\py\stream.c
> D:\SourceCode\GitRepos.Forks\micropython\py\binary.c
> D:\SourceCode\GitRepos.Forks\micropython\py\builtinimport.c
> D:\SourceCode\GitRepos.Forks\micropython\py\builtinevex.c
> D:\SourceCode\GitRepos.Forks\micropython\py\builtinhelp.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modarray.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modbuiltins.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modcollections.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modgc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modio.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modmath.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modcmath.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modmicropython.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modstruct.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modsys.c
> D:\SourceCode\GitRepos.Forks\micropython\py\moduerrno.c
> D:\SourceCode\GitRepos.Forks\micropython\py\modthread.c
> D:\SourceCode\GitRepos.Forks\micropython\py\vm.c
> D:\SourceCode\GitRepos.Forks\micropython\py\bc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\showbc.c
> D:\SourceCode\GitRepos.Forks\micropython\py\repl.c
> D:\SourceCode\GitRepos.Forks\micropython\py\smallint.c
> D:\SourceCode\GitRepos.Forks\micropython\py\frozenmod.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moductypes.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modujson.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modure.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moduzlib.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moduheapq.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modutimeq.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moduhashlib.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moducryptolib.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modubinascii.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\virtpin.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_mem.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_pinbase.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_signal.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_pulse.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_i2c.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\machine_spi.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modussl_axtls.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modussl_mbedtls.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modurandom.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\moduselect.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modwebsocket.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modwebrepl.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\modframebuf.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_reader.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_posix.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_posix_file.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_fat.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_fat_diskio.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\vfs_fat_file.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\utime_mphal.c
> D:\SourceCode\GitRepos.Forks\micropython\extmod\uos_dupterm.c
> D:\SourceCode\GitRepos.Forks\micropython\lib\embed\abort_.c
> D:\SourceCode\GitRepos.Forks\micropython\lib\utils\printf.c >
> build\genhdr\qstr.i.last
> ```
>
> Many Thanks
> Richard
>
> _______________________________________________
> Scons-users mailing list
> Scons-users at scons.org
> https://pairlist4.pair.net/mailman/listinfo/scons-users
>
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