summaryrefslogtreecommitdiff
path: root/utils/splain.PL
diff options
context:
space:
mode:
Diffstat (limited to 'utils/splain.PL')
-rw-r--r--utils/splain.PL46
1 files changed, 46 insertions, 0 deletions
diff --git a/utils/splain.PL b/utils/splain.PL
new file mode 100644
index 0000000000..75b5e2f3f6
--- /dev/null
+++ b/utils/splain.PL
@@ -0,0 +1,46 @@
+#!/usr/local/bin/perl
+
+use Config;
+use File::Basename qw(&basename &dirname);
+
+# List explicitly here the variables you want Configure to
+# generate. Metaconfig only looks for shell variables, so you
+# have to mention them as if they were shell variables, not
+# %Config entries:
+# $startperl
+# $perlpath
+# $eunicefix
+
+# This forces PL files to create target in same directory as PL file.
+# This is so that make depend always knows where to find PL derivatives.
+chdir dirname($0);
+$file = basename($0, '.PL');
+$file .= '.com' if $^O eq 'VMS';
+
+# Open input file before creating output file.
+$IN = '../lib/diagnostics.pm';
+open IN or die "Can't open $IN: $!\n";
+
+# Create output file.
+open OUT,">$file" or die "Can't create $file: $!";
+
+print "Extracting $file (with variable substitutions)\n";
+
+# In this section, perl variables will be expanded during extraction.
+# You can use $Config{...} to use Configure variables.
+
+print OUT <<"!GROK!THIS!";
+$Config{startperl}
+ eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
+ if \$running_under_some_shell;
+!GROK!THIS!
+
+while (<IN>) {
+ print OUT unless /^package diagnostics/;
+}
+
+close IN;
+
+close OUT or die "Can't close $file: $!";
+chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
+exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';