Hi, If I have an external library that I install using make install into the /usr/local/include/libraryname path by default and I want to include it in a C extension, the Makefile for the .so file includes the headers in /usr/local/include/libraryname path. Can I use #include <libraryname/header.h> when writing C/CPP code for my PostgreSQL C extension or do I have to install the external library in a different path than /usr/local/include/libraryname. I think that the external library headers are not getting included. I do manage to build the .so file without error..... Thanks, Tal -- Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html