perl: Add static PIE build

perl/README.md

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+# Miniperl
+
+Build the gzip data compressor as a static PIE ELF running on Linux.
+
+## Requirements
+Make sure the following packages are installed:
+- gcc >= 8 (required for the -static-pie linking option)
+- git
+- GNU Make
+
+## Building
+The miniperl static PIE ELF file is located in the current directory. If you want to rebuild it, run:
+
+'''bash
+$ ./build.sh
+'''
+
+This script downloads, unpacks, patches, configures and builds the gzip static PIE ELF file.

perl/build.sh

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+#!/bin/bash
+
+APPNAME=miniperl
+DIRNAME=perl5
+URL=https://github.com/perl/perl5
+
+# Clean up
+rm -rf ${DIRNAME}
+
+echo -n "Downloading ${APPNAME} sources ... "
+git clone ${URL} --quiet
+if test $? -ne 0; then
+    echo ""
+    echo "Unable to to clone git from ${URL}"
+    exit 1
+fi
+echo "DONE"
+
+echo ""
+echo -n "Building ${APPNAME} ... "
+pushd ${DIRNAME} > /dev/null 2>&1 || exit 1
+
+./Configure -des
+make minitest
+
+rm generate_uudmap.o
+gcc $(ls | grep "\.o$") -lm -lcrypt -static-pie -o miniperl
+mv miniperl ..
+
+popd > /dev/null 2>&1 || exit 1
+
+rm -rf ${DIRNAME}
+
+echo "Build complete!"