Hello
I had encountered an error while building the chapel compiler from source.
On setting *CHPL_COMM=gasnet* and *CHPL_TARGET_PLATFORM=native*, the folder
where the *chpl-env-gen.h* file was being stored ended up being too long
for my OS. Following is the exact error message (relevant to the issue) I
got:
make[2]: stat: /home/parth/chapel/chapel-1.12.0/runtime/src/gen/linux64.
> gnu.arch-native.loc-flat.comm-gasnet.udp.everything.tasks-
> qthreads.tmr-generic.mem-cstdlib.atomics-intrinsics.
> none.gmp.hwloc.re2.wide-struct.fs-none/chpl-env-gen.h: File name too long
The folder linux64.gnu.arch-native.loc-flat.comm-
gasnet.udp.everything.tasks-qthreads.tmr-generic.mem-
cstdlib.atomics-intrinsics.none.gmp.hwloc.re2.wide-*struct.fs-none* is 171
characters long while on my OS (Ubuntu 14.04) NAME_MAX is 143 because of
ecryptfs.
To fix this, I modified the printchplenv file (which was generating the
name of folder). Summary of the change:
I added an optional argument - `separator` to the print_var function in the
> printchplenv file. The default value of `separator` is '.'. In line 202, I
> print the separator instead of the dot. So, when calling the print_var
> function from the print_mode function, at two places, I specify the
> separator as "/" and that solves the issue. I wasn't very particular about
> where I placed the "/", and added it at two locations:
1. before specifying the locale model
> 2. before specifying the atomics
So the path looks like this:
>
> linux64.gnu.arch-native/loc-flat.comm-gasnet.udp.everything.tasks-qthreads.tmr-generic.mem-cstdlib/atomics-intrinsics.none.gmp.hwloc.re2.wide-struct.fs-none
>
This seems fine because the longest foldername in this is 74 bytes long.
Maybe to be on a safer side we can add one more slash.
It'd be nice if you could comment on this fix and let me know if there is a
better way.
Thanks
Parth
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