I ran through this with the debugger:

$perl -d main.pl

Loading DB routines from perl5db.pl version 1.25
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(main.pl:4):      require "somefile.pl";
  DB<1> S newform*
newform::func1
newform::someFile
newform::someFile1
  DB<2> S main*
main::BEGIN
  DB<3>
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So the functions you are requiring are getting included in the package.. because that's where you require them.

One thing that require does is "check for redundant loading, skipping already loaded files." So in this case, the required script is getting included in the package. The package is compiled first. The second time that require is called is at the main, however this is after the package has been compiled. So at that time, the require fails/does not include the package a second time.

So I changed the main code to scope the function call:

use strict;
require "somefile.pl";

use newform;
&newform::someFile();
&newform::func1();
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and it works as expected.

Alternatively you could do this in your main:

sub BEGIN
  {
    require "somefile.pl";
  }
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Which would force the require before the newform package, however you would have to also change the call to someFile in the newform package:

&main::someFile();
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which might not make sense.