diff --git a/app-forensics/libpreloadvaccine/Manifest b/app-forensics/libpreloadvaccine/Manifest
new file mode 100644
index 0000000000..1edea9178d
--- /dev/null
+++ b/app-forensics/libpreloadvaccine/Manifest
@@ -0,0 +1 @@
+DIST libpreloadvaccine-0_pre20190831.tar.gz 84112 BLAKE2B 1a1aae9f036d753f1bb65645bc1775eadb8818577b917c48bcc94be370b35ddc9f27e3e05770c320dc47927284f198313922be46b3e2c57d1294e877455dbe63 SHA512 7990868f307e272c1d16c8c31dda89d6df40eafac45a4e03bd22b37a3829472cf71f96eb3bab939973fcdbdee009f2d66d41edeed05f3368c4acbb828624e8a2
diff --git a/app-forensics/libpreloadvaccine/files/libpreloadvaccine-makefile.patch b/app-forensics/libpreloadvaccine/files/libpreloadvaccine-makefile.patch
new file mode 100644
index 0000000000..852cb53132
--- /dev/null
+++ b/app-forensics/libpreloadvaccine/files/libpreloadvaccine-makefile.patch
@@ -0,0 +1,33 @@
+--- a/makefile	2019-08-31 06:10:16.000000000 +0200
++++ b/makefile	2021-10-18 11:35:15.173731696 +0200
+@@ -4,17 +4,14 @@
+ LIBS = -lm
+ 
+ ###
+-CFLAGS  = -std=c99
+-CFLAGS += -g
++CFLAGS += -std=c99
+ CFLAGS += -Wall
+ CFLAGS += -Wextra
+ CFLAGS += -pedantic
+-CFLAGS += -Werror
+ CFLAGS += -Wmissing-declarations
+ CFLAGS += -DUNITY_SUPPORT_64
+ 
+ BUILDFLAGS = -Wall
+-BUILDFLAGS += -g
+ BUILDFLAGS += -fPIC
+ BUILDFLAGS += -shared
+ 
+@@ -38,8 +35,8 @@
+ 
+ tests.out: test/*.c src/*.c src/*.h
+ 	@echo Compiling $@
+-	@$(CC) $(CFLAGS) src/*.c test/vendor/unity.c test/*.c -o tests.out $(LIBS)
++	@$(CC) $(CFLAGS) -fPIE $(LDFLAGS) src/*.c test/vendor/unity.c test/*.c -o tests.out $(LIBS)
+ 
+ build: src/*.c src/*.h
+ 	@echo Compiling $@
+-	@$(CC) $(BUILDFLAGS) src/*.c -o libpreloadvaccine.so $(BUILDLIBS)
+\ Manca newline alla fine del file
++	@$(CC) $(BUILDFLAGS) $(CFLAGS) $(LDFLAGS) -Wl,-soname,libpreloadvaccine.so src/*.c -o libpreloadvaccine.so $(BUILDLIBS)
diff --git a/app-forensics/libpreloadvaccine/libpreloadvaccine-0_pre20190831.ebuild b/app-forensics/libpreloadvaccine/libpreloadvaccine-0_pre20190831.ebuild
new file mode 100644
index 0000000000..7d512256f1
--- /dev/null
+++ b/app-forensics/libpreloadvaccine/libpreloadvaccine-0_pre20190831.ebuild
@@ -0,0 +1,32 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+COMMIT="634e0155e77bb539a5b35c0ea964bbc525ae3f74"
+
+DESCRIPTION=" Whitelisting LD_PRELOAD libraries using LD_AUDIT"
+HOMEPAGE="https://github.com/ForensicITGuy/libpreloadvaccine"
+SRC_URI="https://github.com/ForensicITGuy/libpreloadvaccine/archive/${COMMIT}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/${PN}-${COMMIT}"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="test"
+
+DOCS=( README.md )
+PATCHES=( "${FILESDIR}/${PN}-makefile.patch" )
+RESTRICT="!test? ( test )"
+
+src_compile() {
+	emake build
+	use test && emake tests.out
+}
+
+src_install() {
+	dolib.so libpreloadvaccine.so
+	einstalldocs
+	echo "😃LD_AUDIT=/usr/$(get_libdir)/libpreloadvaccine.so" > 99libpreloadvaccine || die
+	doenvd 99libpreloadvaccine
+}
diff --git a/app-forensics/libpreloadvaccine/metadata.xml b/app-forensics/libpreloadvaccine/metadata.xml
new file mode 100644
index 0000000000..011384e120
--- /dev/null
+++ b/app-forensics/libpreloadvaccine/metadata.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+    <maintainer type="person">
+      <email>lssndrbarbieri@gmail.com</email>
+      <name>Alessandro Barbieri</name>
+    </maintainer>
+    <upstream>
+        <bugs-to>https://github.com/ForensicITGuy/libpreloadvaccine/issues</bugs-to>
+        <remote-id type="github">ForensicITGuy/libpreloadvaccine</remote-id>
+    </upstream>
+</pkgmetadata>