debian/changelog

 geographiclib (1.49-5) UNRELEASED; urgency=medium
 
-  * Bump Standards-Version to 4.2.1, no changes.
+  * Bump Standards-Version to 4.3.0, no changes.
+  * Add Build-Depends-Package field to symbols file.
 
  -- Bas Couwenberg <sebastic@debian.org>  Sat, 04 Aug 2018 11:59:52 +0200
 

debian/control

@@ -15,7 +15,7 @@ Build-Depends: autoconf-archive,
                python3-all,
                python3-setuptools,
                pkg-kde-tools
-Standards-Version: 4.2.1
+Standards-Version: 4.3.0
 Vcs-Browser: https://salsa.debian.org/debian-gis-team/geographiclib
 Vcs-Git: https://salsa.debian.org/debian-gis-team/geographiclib.git
 Homepage: https://geographiclib.sourceforge.io/

debian/libgeographic17.symbols

 # SymbolsHelper-Confirmed: 1.49 amd64 hurd-i386 i386 kfreebsd-i386
 libGeographic.so.17 #PACKAGE# #MINVER#
+* Build-Depends-Package: libgeographic-dev
  _ZGVZN13GeographicLib4Math4tandIdEET_S2_E8overflow@Base 1.42
  _ZGVZN13GeographicLib4Math6degreeIdEET_vE6degree@Base 1.40
  _ZN13GeographicLib10Geocentric5WGS84Ev@Base 1.40