debian/changelog

+orthanc-webviewer (2.4-2) unstable; urgency=medium
+
+  * Set -DNDEBUG to disable assertion checking
+
+ -- Sebastien Jodogne <s.jodogne@gmail.com>  Fri, 27 Apr 2018 13:48:22 +0200
+
 orthanc-webviewer (2.4-1) unstable; urgency=medium
 
   * New upstream version

debian/rules

@@ -8,6 +8,11 @@ export TARGET := libOrthancWebViewer.so
 
 export DEB_BUILD_MAINT_OPTIONS := hardening=+all
 
+# Disable assert() checking from upstream project, for best performance
+# https://lists.debian.org/debian-med/2018/04/msg00132.html
+export DEB_CFLAGS_MAINT_APPEND=-DNDEBUG
+export DEB_CXXFLAGS_MAINT_APPEND=-DNDEBUG
+
 %:
 	dh $@ --builddirectory=Build