Hi All, We've been using Quagga for a while and looking forward to switching over to FRR. I'm having trouble compiling on Centos 7 though. When I attempt to compile I get this error: checking whether to build static libraries... yes checking json-c/json.h usability... no checking json-c/json.h presence... no checking for json-c/json.h... no checking for json_object_get in -ljson-c... no checking for json_object_get in -ljson... no configure: error: lib json is needed to compile I see the header and c file in the lib folder: [centos@ip-172-30-5-42 frr-frr-3.0.2]$ find ./ -name json.* ./lib/json.c ./lib/json.h [centos@ip-172-30-5-42 frr-frr-3.0.2]$ I have json libs installed on my machine: [centos@ip-172-30-5-42 frr-frr-3.0.2]$ yum list installed | grep json json-c.x86_64 0.11-4.el7_0 installed json-devel.x86_64 0-4.20150410gitd7d0509.el7 @epel json-glib.x86_64 1.2.6-1.el7 @base json-glib-devel.x86_64 1.2.6-1.el7 @base libfastjson.x86_64 0.99.4-2.el7 @base python-jsonpatch.noarch 1.2-4.el7 @base python-jsonpointer.noarch 1.9-2.el7 installed [centos@ip-172-30-5-42 frr-frr-3.0.2]$ What am I missing? Thanks for any help. CB --