diff -Nru log4cplus-2.0.5/debian/changelog log4cplus-2.0.5/debian/changelog
--- log4cplus-2.0.5/debian/changelog	2020-11-03 17:38:12.000000000 +0000
+++ log4cplus-2.0.5/debian/changelog	2021-01-12 15:48:11.000000000 +0000
@@ -1,3 +1,11 @@
+log4cplus (2.0.5-3) unstable; urgency=medium
+
+  * Dont leak Catch symbols in shared library by building without unit-tests
+    for the package. To ensure that unit tests are still run, build the library
+    with unit-tests separately. Closes: #978617.
+
+ -- Tobias Frost <tobi@debian.org>  Tue, 12 Jan 2021 16:48:11 +0100
+
 log4cplus (2.0.5-2) unstable; urgency=medium
 
   * Upload to unstable.
diff -Nru log4cplus-2.0.5/debian/control log4cplus-2.0.5/debian/control
--- log4cplus-2.0.5/debian/control	2020-11-03 17:38:12.000000000 +0000
+++ log4cplus-2.0.5/debian/control	2020-11-03 19:22:32.000000000 +0000
@@ -1,8 +1,9 @@
 Source: log4cplus
 Section: libs
 Priority: optional
-Maintainer: Tobias Frost <tobi@debian.org>
-Uploaders: Andrew Pollock <apollock@debian.org>
+Maintainer: Andrew Pollock <apollock@debian.org>
+Uploaders:
+ Tobias Frost <tobi@debian.org>
 Build-Depends:
  cmake,
  catch,
diff -Nru log4cplus-2.0.5/debian/rules log4cplus-2.0.5/debian/rules
--- log4cplus-2.0.5/debian/rules	2020-11-03 17:38:06.000000000 +0000
+++ log4cplus-2.0.5/debian/rules	2021-01-12 15:17:55.000000000 +0000
@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-
+DH_VERBOSE=1
 
 export DEB_CXXFLAGS_MAINT_APPEND := --std=c++11
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
@@ -8,6 +8,19 @@
 %:
 	dh $@ --buildsystem=cmake
 
+override_dh_auto_clean:
+	dh_auto_clean
+	# building tests separately, see #978617
+	dh_auto_clean --builddirectory build-with-tests
+
+override_dh_auto_configure-arch:
+	dh_auto_configure -- -DWITH_UNIT_TESTS=OFF
+	dh_auto_configure --builddirectory build-with-tests
+
+override_dh_auto_build-arch:
+	dh_auto_build
+	dh_auto_build --builddirectory build-with-tests
+
 override_dh_strip:
 	dh_strip --dbgsym-migration='liblog4cplus-dbg (<< 1.1.2-4~)'
 
@@ -22,6 +35,9 @@
 	dh_link
 	jdupes -rl debian/liblog4cplus-doc/usr/share/doc/liblog4cplus-dev/html/
 
+override_dh_auto_test-arch:
+	dh_auto_test --builddirectory build-with-tests
+
+# nothing todo for indep:
 override_dh_auto_install-indep:
 override_dh_auto_test-indep:
-	@echo nop for indep.