diff --git a/openssl.spec b/openssl.spec
index 2bc755f..b258e16 100644
--- a/openssl.spec
+++ b/openssl.spec
@@ -5,6 +5,12 @@
 %define devname %mklibname openssl -d
 %define staticname %mklibname openssl -s -d
 
+# patchelf 0.9 is buggy so compat libraries are experimental for now
+%bcond_without compat
+%define major_compat 10
+%define libcrypto_compat %mklibname crypto %{major_compat}
+%define libssl_compat %mklibname ssl %{major_compat}
+
 %define conflict2 %mklibname openssl 0.9.8
 
 # Number of threads to spawn when testing some threading fixes.
@@ -15,7 +21,7 @@
 Summary:	Secure Sockets Layer communications libs & utils
 Name:		openssl
 Version:	1.0.2m
-Release:	1
+Release:	2
 License:	BSD-like
 Group:		System/Libraries
 Url:		https://www.openssl.org
@@ -43,6 +49,11 @@ Patch302:	openssl-1.0.2-enginesdir.patch
 Patch303:	openssl-0.9.8a-no-rpath.patch
 Patch304:	openssl-1.0.2-test-use-localhost.patch
 BuildRequires:	bc
+%if %{with compat}
+# readelf is used to produce libcrypto.so.10 and libssl.so.10
+# needed for compatibility with Fedora/RHEL (Viber etc)
+BuildRequires:	patchelf >= 0.10-0.20170615.2
+%endif
 %{?_with_krb5:BuildRequires:	krb5-devel}
 BuildRequires:	sctp-devel
 BuildRequires:	pkgconfig(zlib)
@@ -169,6 +180,38 @@ cryptographic algorithms and protocols, including DES, RC4, RSA and SSL.
 
 #----------------------------------------------------------------------------
 
+%if %{with compat}
+%package -n %{libcrypto_compat}
+Summary:	Secure Sockets Layer communications libs (Fedora compatibility only)
+Group:		System/Libraries
+
+%description -n %{libcrypto_compat}
+The libraries files are needed for various cryptographic algorithms
+and protocols, including DES, RC4, RSA and SSL.
+
+%files -n %{libcrypto_compat}
+%doc FAQ LICENSE NEWS PROBLEMS README*
+%{_libdir}/libcrypto.so.%{major_compat}*
+%endif
+
+#----------------------------------------------------------------------------
+
+%if %{with compat}
+%package -n %{libssl_compat}
+Summary:	Secure Sockets Layer communications libs (Fedora compatibility only)
+Group:		System/Libraries
+
+%description -n %{libssl_compat}
+The libraries files are needed for various cryptographic algorithms
+and protocols, including DES, RC4, RSA and SSL.
+
+%files -n %{libssl_compat}
+%doc FAQ LICENSE NEWS PROBLEMS README*
+%{_libdir}/libssl.so.%{major_compat}*
+%endif
+
+#----------------------------------------------------------------------------
+
 %prep
 %setup -q
 %patch0 -p1 -b .gost
@@ -311,6 +354,14 @@ chmod 755 %{buildroot}%{_libdir}/openssl-%{major}/engines/*.so*
 chmod 755 %{buildroot}%{_libdir}/*.so*
 chmod 755 %{buildroot}%{_bindir}/*
 
+%if %{with compat}
+# RHEL/Fedora compatibility libraries
+cp %{buildroot}%{_libdir}/libcrypto.so.%{major} %{buildroot}%{_libdir}/libcrypto.so.%{major_compat}
+cp %{buildroot}%{_libdir}/libssl.so.%{major} %{buildroot}%{_libdir}/libssl.so.%{major_compat}
+patchelf --set-soname libcrypto.so.%{major_compat} %{buildroot}%{_libdir}/libcrypto.so.%{major_compat}
+patchelf --set-soname libssl.so.%{major_compat} %{buildroot}%{_libdir}/libssl.so.%{major_compat}
+%endif
+
 # nuke a mistake
 rm -f %{buildroot}%{_mandir}/man3/.3