Thank you, beech. I need a bit of advice, as I never edited a Makefile before. The package has two Makefile, but I guess the one that needs editing is the one at the first level inside the package (the second being in folder "myldr"). How/Where do I add the variable -mmacosx-version-min=? I appreciate your help

Hi

So it doesn't already show up in any of the generated makefiles?

One of CFLAGS/LDFLAGS would be the place to add it, possibly by editing postamble in https://metacpan.org/source/RSCHUPP/PAR-Packer-1.045/myldr/Makefile.PL

If its not specified in any makefile , https://stackoverflow.com/questions/25352389/what-is-the-difference-between-macosx-deployment-target-and-mmacosx-version-min/25362535 says you can specify the same thing by  export MACOSX_DEPLOYMENT_TARGET=10.6

No success so far. Exporting export MACOSX_DEPLOYMENT_TARGET=10.6 does not produce any effect when reinstalling the module cpanm -f PAR::Packer. Reading the environment variables of my open Terminal with:

foreach (sort keys %ENV) { 
  print "$_  =  $ENV{$_}\n"; 
}
[download]

produces LC_VERSION_MIN_MACOSX  =  10.07 but - after reinstalling the module (I also reinstalled the PAR module, as it must have some influence on the compiler settings), still my binary has

      cmd LC_VERSION_MIN_MACOSX
  cmdsize 16
  version 10.13
      sdk 10.13
[download]

I found the following in the Makefile (inside the main folder and milder)

LDDLFLAGS =  -mmacosx-version-min=10.13 -bundle -undefined dynamic_loo
+kup -L/usr/local/lib -fstack-protector-strong
LDFLAGS =  -mmacosx-version-min=10.13 -fstack-protector-strong -L/usr/
+local/lib
[download]

However, changing the value (changed everywhere) and running make -> make test -> make install still generates a binary with the -mmacosx-version-min=10.13 flag. Getting a bit depressed.