trampoline.c: fatal error: 'uv.h' file not found on BSD when JSON-C is disabled

On v9_16 compiler fails to find <uv.h> when BIND 9 is configured with --without-json-c (or JSON-C is not present) on FreeBSD 12.3:

$ ./configure --without-json-c && make -j5
...
cc  -include /home/newman/bind9/config.h -I/home/newman/bind9 -I../.. -I./unix/include  -I./pthreads/include  -I./include  -I./include  -I.  -I/home/newman/bind9/lib/dns/include  -I../../lib/dns/include  -I/usr/include -DOPENSSL_SUPPRESS_DEPRECATED    -I/usr/local/include/libxml2        -g -O2 -pthread -fPIC   -W -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings -Wformat -Wpointer-arith -Wno-missing-field-initializers -fno-strict-aliasing  -c trampoline.c
trampoline.c:18:10: fatal error: 'uv.h' file not found
#include <uv.h>
         ^~~~~~

The build failure starts with be7f672f but it may be just a symptom of not adding -I/usr/local/include when checking for libuv's uv.h in ./configure.