diff --git a/Compiler/libxc/build b/Compiler/libxc/build
new file mode 100644
index 0000000..e2db2bb
--- /dev/null
+++ b/Compiler/libxc/build
@@ -0,0 +1,32 @@
+#!/usr/bin/env modbuild
+
+pbuild::set_download_url "https://gitlab.com/$P/$P/-/archive/${V_PKG}/$P-${V_PKG}.tar.gz"
+pbuild::add_to_group 'Compiler'
+pbuild::use_autotools
+pbuild::install_docfiles 'AUTHORS'
+pbuild::install_docfiles 'COPYING'
+pbuild::install_docfiles 'KNOWN_ISSUES'
+pbuild::install_docfiles 'NEWS'
+pbuild::install_docfiles 'PACKAGING'
+pbuild::install_docfiles 'README'
+pbuild::install_docfiles 'TODO'
+
+pbuild::post_prep() {
+	libtoolize
+	aclocal
+	autoheader 
+	automake --add-missing
+	autoconf 
+}
+
+pbuild::pre_configure() {
+	local -r cflags="-O2 -fPIC -fp-model precise            -funroll-loops -g  -traceback -xHost"
+	local -r fcflags="-O2 -fPIC -fp-model precise -fpp -free -funroll-loops -g  -traceback -xHost"
+	pbuild::add_configure_args "CC=${CC}"
+	pbuild::add_configure_args "CXX=${CXX}"
+	pbuild::add_configure_args "FC=${FC}"
+	pbuild::add_configure_args "CFLAGS=${cflags}"
+	pbuild::add_configure_args "CXXFLAGS=${cflags}"
+	pbuild::add_configure_args "FCFLAGS=${fcflags}"
+}
+
diff --git a/Compiler/libxc/files/variants.rhel6 b/Compiler/libxc/files/variants.rhel6
new file mode 100644
index 0000000..945899d
--- /dev/null
+++ b/Compiler/libxc/files/variants.rhel6
@@ -0,0 +1 @@
+libxc/4.3.4	stable		intel/19.4 b:autoconf/2.69 b:automake/1.16.1 b:libtool/2.4.6-1
diff --git a/Compiler/libxc/modulefile b/Compiler/libxc/modulefile
new file mode 100644
index 0000000..361154a
--- /dev/null
+++ b/Compiler/libxc/modulefile
@@ -0,0 +1,13 @@
+#%Module1.0
+
+module-whatis		"library of exchange-correlation functionals for density-functional theory"
+module-url		"https://gitlab.com/libxc/libxc"
+module-license		"Mozilla Public License Version 2.0"
+module-maintainer	"Achim Gsell <achim.gsell@psi.ch>"
+module-help		"
+Libxc is a library of exchange-correlation functionals for
+density-functional theory. The aim is to provide a portable, well
+tested and reliable set of exchange and correlation functionals that
+can be used by a variety of programs.
+"
+