Re^4: Where should (or could) a distribution override HARNESS

"build" refers to Inline creating a module in _Inline (like h2xs) and making it at use/BEGIN time (perl Makefile.PL/make install), before your program runs, ex

subsequent runs don't "build"

unless the c-source changes

The resulting directory structure

The _Inline/build directory usually gets cleaned up, but not for notdef.pl

notdef.pl also NAME's the module, so its name doesn't change, but def.pl doesn't NAME the module, so a name is derived from the filename (def.pl) and the md5 sum of the c-source code

Now, can two copies of notdef.pl run simultaneously? Lets see

First cleanup $ rm -rfv _Inline

And one copy will trip over the other and die , the other will continue normally

$ perl -le " system 1, $^X, q,notdef.pl, for 1,2 "

$ validate Stage
Starting Build Preprocess Stage
get_maps Stage
Finished Build Preprocess Stage

Starting Build Parse Stage
validate Stage
Starting Build Preprocess Stage
get_maps Stage
Finished Build Preprocess Stage

Starting Build Parse Stage
Finished Build Parse Stage

Starting Build Glue 1 Stage
Finished Build Parse Stage

Starting Build Glue 1 Stage
Finished Build Glue 1 Stage

Starting Build Glue 2 Stage
Finished Build Glue 2 Stage

Starting Build Glue 3 Stage
Finished Build Glue 1 Stage

Starting Build Glue 2 Stage
Finished Build Glue 2 Stage

Starting Build Glue 3 Stage
Finished Build Glue 3 Stage

Starting Build Compile Stage
  Starting "perl Makefile.PL" Stage
Finished Build Glue 3 Stage

Starting Build Compile Stage
  Starting "perl Makefile.PL" Stage
Writing Makefile for modSV
Writing Makefile for modSV
Writing MYMETA.yml and MYMETA.json
Can't open Makefile for input: No such file or directory
 at notdef.pl line 8.
BEGIN failed--compilation aborted at notdef.pl line 8.
Writing MYMETA.yml and MYMETA.json
  Finished "perl Makefile.PL" Stage

  Starting "make" Stage
  ...
[download]

Now I'm not sure what scenario davido is talking about in the OP, but I hope this helps

FWIW, def.pl/notdef.pl are derived from XS: returning a 64-bit unsigned int?/Re: Inline::C with multiple *.c

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Re^4: Where should (or could) a distribution override HARNESS_OPTIONS? (use Inline works like this)