Tests fails to build on Debian unstable:

libtool: link: gcc -I./../src/headers -I. -g -O2 "-ffile-prefix-map=/build/spatialite-5.1.0~rc0=." -fstack-protector-strong -Wformat -Werror=format-security -Wl,-z -Wl,relro -Wl,-z -Wl,now -o .libs/check_init check_init.o -L../src -lpt
hread /build/spatialite-5.1.0~rc0/src/.libs/libspatialite.so -lm -lxml2 -lminizip -lrttopo -lfreexl -lproj -lz -L/usr/lib/x86_64-linux-gnu -lgeos_c
/usr/bin/ld: check_init.o: undefined reference to symbol 'sqlite3_errmsg'
/usr/bin/ld: /lib/x86_64-linux-gnu/libsqlite3.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[5]: *** [Makefile:1575: check_init] Error 1
make[5]: Leaving directory '/build/spatialite-5.1.0~rc0/test'

Description: Link to sqlite3 for sqlite3_errmsg.
Author: Bas Couwenberg <sebastic@debian.org>
Bug: https://groups.google.com/g/spatialite-users/c/hAJ2SgitN4M/m/N33-4IqNBAAJ

--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -115,9 +115,9 @@ endif
 AM_CFLAGS = -I@srcdir@/../src/headers -I@srcdir@
 
 if MINGW
-AM_LDFLAGS = -L../src -lspatialite -lm -lxml2 $(GCOV_FLAGS)
+AM_LDFLAGS = -L../src -lspatialite -lsqlite3 -lm -lxml2 $(GCOV_FLAGS)
 else 
-AM_LDFLAGS = -L../src -lpthread -lspatialite -lm -lxml2 $(GCOV_FLAGS)
+AM_LDFLAGS = -L../src -lpthread -lspatialite -lsqlite3 -lm -lxml2 $(GCOV_FLAGS)
 endif
 
 TESTS = $(check_PROGRAMS)