debian/changelog

+libgdal-grass (2.4.2-3) unstable; urgency=medium
+
+  * Disable as-needed linking on Debian too, gcc-9 enables it by default.
+
+ -- Bas Couwenberg <sebastic@debian.org>  Sun, 08 Sep 2019 22:21:39 +0200
+
 libgdal-grass (2.4.2-2) unstable; urgency=medium
 
   * Update packaging for GRASS 7.8.0.

debian/rules

@@ -7,6 +7,9 @@
 # Enable hardening build flags
 export DEB_BUILD_MAINT_OPTIONS=hardening=+all
 
+# Don't link with as-needed to prevent missing libraries
+export DEB_LDFLAGS_MAINT_APPEND=-Wl,--no-as-needed
+
 # Disable PIE on Ubuntu where it's still problematic
 VENDOR_DERIVES_FROM_UBUNTU ?= $(shell dpkg-vendor --derives-from Ubuntu && echo yes)
 DISTRIBUTION_RELEASE       := $(shell lsb_release -cs)
@@ -15,7 +18,6 @@ ifeq ($(VENDOR_DERIVES_FROM_UBUNTU),yes)
   ifneq (,$(filter $(DISTRIBUTION_RELEASE),xenial bionic))
     export DEB_BUILD_MAINT_OPTIONS=hardening=+all,-pie
   endif
-  export DEB_LDFLAGS_MAINT_APPEND=-Wl,--no-as-needed
 endif
 
 PKGNAME=$(shell grep Package: debian/control | head -1 | cut -d' ' -f2)