diff -Nru evolution-data-server-3.40.0/debian/changelog evolution-data-server-3.40.0/debian/changelog
--- evolution-data-server-3.40.0/debian/changelog	2021-03-22 20:20:23.000000000 +0000
+++ evolution-data-server-3.40.0/debian/changelog	2021-03-23 20:07:59.000000000 +0000
@@ -1,3 +1,11 @@
+evolution-data-server (3.40.0-1ubuntu1) hirsute; urgency=medium
+
+  * libebook-contacts-1.2-3.symbols:
+    - Remove duplicate symbols.
+    - Mark symbols as optional not seen when building with lto.
+
+ -- Matthias Klose <doko@ubuntu.com>  Tue, 23 Mar 2021 21:07:59 +0100
+
 evolution-data-server (3.40.0-1) experimental; urgency=medium
 
   * New upstream release
diff -Nru evolution-data-server-3.40.0/debian/libebook-contacts-1.2-3.symbols evolution-data-server-3.40.0/debian/libebook-contacts-1.2-3.symbols
--- evolution-data-server-3.40.0/debian/libebook-contacts-1.2-3.symbols	2021-03-22 20:20:23.000000000 +0000
+++ evolution-data-server-3.40.0/debian/libebook-contacts-1.2-3.symbols	2021-03-23 20:07:54.000000000 +0000
@@ -1,15 +1,13 @@
 libebook-contacts-1.2.so.3 libebook-contacts-1.2-3 #MINVER#
 * Build-Depends-Package: libebook-contacts1.2-dev
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::WriteMessage(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::~NullLogger()@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::~NullLogger()@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::~NullLogger()@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::Logger::WriteLevel()@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"typeinfo for i18n::phonenumbers::NullLogger@Base" 3.24.1
+ (c++|optional=lto|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::WriteMessage(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@Base" 3.24.1
+ (c++|optional=lto|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::NullLogger::~NullLogger()@Base" 3.24.1
+ (c++|optional=lto|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"i18n::phonenumbers::Logger::WriteLevel()@Base" 3.24.1
+ (c++|optional=lto|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"typeinfo for i18n::phonenumbers::NullLogger@Base" 3.24.1
  (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"typeinfo for i18n::phonenumbers::Logger@Base" 3.24.1
  (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"typeinfo name for i18n::phonenumbers::NullLogger@Base" 3.24.1
  (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"typeinfo name for i18n::phonenumbers::Logger@Base" 3.24.1
- (c++|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"vtable for i18n::phonenumbers::NullLogger@Base" 3.24.1
+ (c++|optional=lto|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"vtable for i18n::phonenumbers::NullLogger@Base" 3.24.1
  (c++|optional|arch=!hppa !hurd-any !kfreebsd-amd64 !kfreebsd-i386)"void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char const*>(char const*, char const*, std::forward_iterator_tag)@Base" 3.28.5
  e_address_western_copy@Base 3.24.1
  e_address_western_free@Base 3.16.2