In t/TEST, automatically detect if running under miniperl

Set $ENV{PERL_CORE_MINITEST} based on defined &DynaLoader::boot_DynaLoader,
instead of relying on a -minitest parameter. &DynaLoader::boot_DynaLoader is
undefined in miniperl, defined in perl, for both -Dusedl and -Uusedl

1 files changed, 2 insertions, 1 deletions

diff --git a/t/TEST b/t/TEST
index 51b6df489c..afe7f494f5 100755
--- a/t/TEST
+++ b/t/TEST
@@ -124,7 +124,6 @@ our $show_elapsed_time = $ENV{HARNESS_TIMER} || 0;
 	$::with_utf8 = 1 if $1 eq 'utf8';
 	$::with_utf16 = 1 if $1 eq 'utf16';
 	$::taintwarn = 1 if $1 eq 'taintwarn';
-	$ENV{PERL_CORE_MINITEST} = 1 if $1 eq 'minitest';
 	if ($1 =~ /^deparse(,.+)?$/) {
 	    $::deparse = 1;
 	    $::deparse_opts = $1;
@@ -133,6 +132,8 @@ our $show_elapsed_time = $ENV{HARNESS_TIMER} || 0;
     @ARGV = @argv;
 }
 
+$ENV{PERL_CORE_MINITEST} = 1 unless defined &DynaLoader::boot_DynaLoader;
+
 chdir 't' if -f 't/TEST';
 if (-f 'TEST' && -f 'harness' && -d '../lib') {
     @INC = '../lib';