diff --git a/.gcc-toolset-11.metadata b/.gcc-toolset-11.metadata
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/.gcc-toolset-11.metadata
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/.gitignore
diff --git a/SOURCES/README b/SOURCES/README
new file mode 100644
index 0000000..4547c53
--- /dev/null
+++ b/SOURCES/README
@@ -0,0 +1,34 @@
+Package %{scl_name} is the main package for Red Hat GCC
+Toolset 11.  By installing the %{scl_name} package, you will get
+the working set of packages that are included in Red Hat GCC
+Toolset 11.  It is possible to install only certain components,
+such as the toolchain packages used to develop and debug
+applications, since this package contains a number of meta packages.
+These are: %{scl_name}-perftools, which includes performance
+monitoring tools; and %{scl_name}-toolchain, which includes
+development and debugging tools.
+
+Usage: scl enable %{scl} <command>
+
+Red Hat GCC Toolset allows you to build and execute applications
+which are not located in the filesystem root hierarchy, but are
+stored in an alternative location, which is %{_scl_root} in case
+of the %{scl_name} collection.
+
+Examples:
+scl enable %{scl_name} 'command --arg'
+  Run a specific command with the argument --arg within the %{scl_name}
+  Red Hat GCC Toolset environment.
+
+scl enable %{scl_name} 'gcc'
+  Run GCC from the %{scl_name} Red Hat GCC Toolset.
+
+scl enable %{scl_name} 'bash'
+  Run an interactive shell wherein the %{scl_name} software collection
+  is enabled.
+
+scl enable %{scl_name} 'man gcc'
+  Show man pages for the gcc command, which is a part of the
+  %{scl_name} Red Hat GCC Toolset.
+
+Report bugs to <http://bugzilla.redhat.com>.
diff --git a/SOURCES/sudo.sh b/SOURCES/sudo.sh
new file mode 100644
index 0000000..7feaa8f
--- /dev/null
+++ b/SOURCES/sudo.sh
@@ -0,0 +1,41 @@
+#! /bin/bash
+
+# Emulate /usr/bin/sudo, so that SCL environment variables
+# are passed through via an /bin/env wrapper.
+# Includes work by Andy Fong <boringuy@gmail.com>
+
+cmd_started=false
+is_option_param_next=false
+for arg in "$@"
+do
+   case "$arg" in
+    *\'*)
+      arg= ;;
+   esac
+   if [ "$cmd_started" = true ]; then
+       cmd_options="$cmd_options '$arg'"
+   elif [ "$is_option_param_next" = true ]; then
+       sudo_options="$sudo_options $arg"
+       is_option_param_next=false
+   elif [[ $arg == -* ]]; then
+       sudo_options="$sudo_options $arg"
+       case "$arg" in
+        # all the options that take a parameter
+        "-g" | "-h" | "-p" | "-u" | "-U" | "-C" | "-s" | "-r" | "-t" | "-T")
+            is_option_param_next=true
+        ;;
+        "--")
+          cmd_started=true
+        ;;
+       esac
+   elif [[ $arg == *=* ]]; then
+       sudo_options="$sudo_options $arg"
+   else
+       cmd_options="$cmd_options '$arg'"
+       cmd_started=true
+   fi
+done
+if [ "$sudo_options" == "" ]; then
+    sudo_options="-E"
+fi
+exec /usr/bin/sudo $sudo_options env LD_LIBRARY_PATH=$LD_LIBRARY_PATH PATH=$PATH scl enable %{scl} "$cmd_options"
diff --git a/SPECS/gcc-toolset-11.spec b/SPECS/gcc-toolset-11.spec
new file mode 100644
index 0000000..56e78b5
--- /dev/null
+++ b/SPECS/gcc-toolset-11.spec
@@ -0,0 +1,190 @@
+%global __python /usr/bin/python3
+%global scl gcc-toolset-11
+%scl_package %scl
+
+Summary: Package that installs %scl
+Name: %scl_name
+Version: 11.0
+Release: 0%{?dist}
+License: GPLv2+
+Group: Applications/File
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+Source0: README
+Source1: sudo.sh
+
+# The base package requires just the toolchain and the perftools.
+Requires: %{scl_prefix}toolchain %{scl_prefix}perftools
+Obsoletes: %{name} < %{version}-%{release}
+
+BuildRequires: scl-utils-build >= 20120927-11
+BuildRequires: iso-codes
+BuildRequires: help2man
+BuildRequires: python3-devel
+
+%description
+This is the main package for %scl Software Collection.
+
+%package runtime
+Summary: Package that handles %scl Software Collection.
+Group: Applications/File
+Requires: scl-utils >= 20120927-11
+Obsoletes: %{name}-runtime < %{version}-%{release}
+Requires(post): %{_root_sbindir}/semanage %{_root_sbindir}/restorecon
+Requires(postun): %{_root_sbindir}/semanage %{_root_sbindir}/restorecon
+
+%description runtime
+Package shipping essential scripts to work with %scl Software Collection.
+
+%package build
+Summary: Package shipping basic build configuration
+Group: Applications/File
+Requires: %{scl_prefix}runtime
+Requires: scl-utils-build >= 20120927-11
+Obsoletes: %{name}-build < %{version}-%{release}
+
+%description build
+Package shipping essential configuration macros to build %scl Software Collection.
+
+%package toolchain
+Summary: Package shipping basic toolchain applications
+Group: Applications/File
+Requires: %{scl_prefix}runtime
+Requires: %{scl_prefix}gcc %{scl_prefix}gcc-c++ %{scl_prefix}gcc-gfortran
+Requires: %{scl_prefix}binutils %{scl_prefix}gdb %{scl_prefix}strace
+Requires: %{scl_prefix}dwz %{scl_prefix}elfutils
+Requires: %{scl_prefix}ltrace %{scl_prefix}make
+Requires: %{scl_prefix}annobin
+Obsoletes: %{name}-toolchain < %{version}-%{release}
+
+%description toolchain
+Package shipping basic toolchain applications (compiler, debugger, ...)
+
+%package perftools
+Summary: Package shipping performance tools
+Group: Applications/File
+Requires: %{scl_prefix}runtime
+Requires: %{scl_prefix}systemtap %{scl_prefix}valgrind
+%ifarch x86_64 ppc64le aarch64
+Requires: %{scl_prefix}dyninst
+%endif
+Obsoletes: %{name}-perftools < %{version}-%{release}
+
+%description perftools
+Package shipping performance tools (systemtap)
+
+%prep
+%setup -c -T
+
+# This section generates README file from a template and creates man page
+# from that file, expanding RPM macros in the template file.
+cat <<'EOF' | tee README
+%{expand:%(cat %{SOURCE0})}
+EOF
+
+%build
+
+# Temporary helper script used by help2man.
+cat <<\EOF | tee h2m_helper
+#!/bin/sh
+if [ "$1" = "--version" ]; then
+  printf '%%s' "%{?scl_name} %{version} Software Collection"
+else
+  cat README
+fi
+EOF
+chmod a+x h2m_helper
+# Generate the man page.
+help2man -N --section 7 ./h2m_helper -o %{?scl_name}.7
+
+# Enable collection script
+# ========================
+cat <<EOF >enable
+# General environment variables
+export PATH=%{_bindir}\${PATH:+:\${PATH}}
+export MANPATH=%{_mandir}:\${MANPATH}
+export INFOPATH=%{_infodir}\${INFOPATH:+:\${INFOPATH}}
+export PCP_DIR=%{_scl_root}
+# bz847911 workaround:
+# we need to evaluate rpm's installed run-time % { _libdir }, not rpmbuild time
+# or else /etc/ld.so.conf.d files?
+rpmlibdir=\$(rpm --eval "%%{_libdir}")
+# bz1017604: On 64-bit hosts, we should include also the 32-bit library path.
+if [ "\$rpmlibdir" != "\${rpmlibdir/lib64/}" ]; then
+  rpmlibdir32=":%{_scl_root}\${rpmlibdir/lib64/lib}"
+fi
+export LD_LIBRARY_PATH=%{_scl_root}\$rpmlibdir\$rpmlibdir32\${LD_LIBRARY_PATH:+:\${LD_LIBRARY_PATH}}
+export LD_LIBRARY_PATH=%{_scl_root}\$rpmlibdir\$rpmlibdir32:%{_scl_root}\$rpmlibdir/dyninst\$rpmlibdir32/dyninst\${LD_LIBRARY_PATH:+:\${LD_LIBRARY_PATH}}
+export PKG_CONFIG_PATH=%{_libdir}/pkgconfig\${PKG_CONFIG_PATH:+:\${PKG_CONFIG_PATH}}
+EOF
+
+# Sudo script
+# ===========
+cat <<'EOF' > sudo
+%{expand:%(cat %{SOURCE1})}
+EOF
+
+# " (Fix vim syntax coloring.)
+
+%install
+(%{scl_install})
+
+# This allows users to build packages using GTS.
+cat >> %{buildroot}%{_root_sysconfdir}/rpm/macros.%{scl}-config << EOF
+%%enable_devtoolset11 %%global ___build_pre %%{___build_pre}; source scl_source enable %{scl} || :
+EOF
+
+mkdir -p %{buildroot}%{_scl_root}/etc/alternatives %{buildroot}%{_scl_root}/var/lib/alternatives
+
+install -d -m 755 %{buildroot}%{_scl_scripts}
+install -p -m 755 enable %{buildroot}%{_scl_scripts}/
+
+install -d -m 755 %{buildroot}%{_scl_scripts}
+install -p -m 755 sudo %{buildroot}%{_bindir}/
+
+# Other directories that should be owned by the runtime
+install -d -m 755 %{buildroot}%{_datadir}/appdata
+# Otherwise unowned perl directories
+install -d -m 755 %{buildroot}%{_libdir}/perl5
+install -d -m 755 %{buildroot}%{_libdir}/perl5/vendor_perl
+install -d -m 755 %{buildroot}%{_libdir}/perl5/vendor_perl/auto
+
+# Install generated man page.
+install -d -m 755 %{buildroot}%{_mandir}/man7
+install -p -m 644 %{?scl_name}.7 %{buildroot}%{_mandir}/man7/
+
+%files
+%doc README
+%{_mandir}/man7/%{?scl_name}.*
+
+%files runtime
+%scl_files
+%attr(0644,root,root) %verify(not md5 size mtime) %ghost %config(missingok,noreplace) %{_sysconfdir}/selinux-equiv.created
+%dir %{_scl_root}/etc/alternatives
+%dir %{_datadir}/appdata
+
+%files build
+%{_root_sysconfdir}/rpm/macros.%{scl}*
+
+%files toolchain
+
+%files perftools
+
+%post runtime
+if [ ! -f %{_sysconfdir}/selinux-equiv.created ]; then
+  /usr/sbin/semanage fcontext -a -e / %{_scl_root}
+  restorecon -R %{_scl_root}
+  touch %{_sysconfdir}/selinux-equiv.created
+fi
+
+%preun runtime
+[ $1 = 0 ] && rm -f %{_sysconfdir}/selinux-equiv.created || :
+
+%postun runtime
+if [ $1 = 0 ]; then
+  /usr/sbin/semanage fcontext -d %{_scl_root}
+  [ -d %{_scl_root} ] && restorecon -R %{_scl_root} || :
+fi
+
+%changelog
+* Wed Apr 21 2021 Marek Polacek <polacek@redhat.com> - 11.0.0
+- new package