Re: pgxs question - linking c-functions to external libraries

Alan Nilsson <anilsson@apple.com> writes:
> I am trying to link libuuid into a custom extension, here is my make file (building PG 9.3.5 on CentOS 6.5 (GCC
4.4.7)fwiw): 

> MODULES = aitpowerpg
> EXTENSION = aitpowerpg
> DATA = aitpowerpg--1.0.sql

> SHLIB_LINK += -luuid

> ifdef USE_PGXS
> PG_CONFIG = pg_config
> PGXS := $(shell $(PG_CONFIG) --pgxs)
> include $(PGXS)
> else
> subdir = contrib/aitpowerpg
> top_builddir = ../..
> include $(top_builddir)/src/Makefile.global
> include $(top_srcdir)/contrib/contrib-global.mk
> endif

> The line SHLIB_LINK += -luuid has no effect.

I'm not sure how well documented this is, but pgxs.mk quoth

#   SHLIB_LINK -- will be added to MODULE_big link line

Since you're using the MODULES target not the MODULE_big target, it gets
left out.  Try following the pattern in the contrib/uuid-ossp Makefile.

            regards, tom lane