Postgres Pro
Downloads
Home   >   mailing lists

Re: Linker errors while creating a PostgreSQL C extension function. - Mailing list pgsql-general

From Daniel Verite
Subject Re: Linker errors while creating a PostgreSQL C extension function.
Date
Msg-id 2455c526-58ab-4f2b-a9c0-f2b2890ca365@manitou-mail.org
Whole thread Raw
In response to Re: Linker errors while creating a PostgreSQL C extension function.  (TalGloz <glozmantal@gmail.com>)
Responses Re: Linker errors while creating a PostgreSQL C extension function.
List pgsql-general
Tree view 
    TalGloz wrote:

> If yes then the -lseal is added with the $(LDFLAGS) at the end of the
> command.

But it doesn't happen because LDFLAGS is overriden by the
makefile included just after you set it. The relevant part
copy-pasted from your mail:

   LDFLAGS = -L$(INCLUDE_SEAL_LIB) -llibseal.a -lpthread
   include $(PGXS)
   seal_diff_cpp.so: seal_diff_cpp.o
      $(CXX) -Wl,--no-undefined -shared -o seal_diff_cpp.so
   seal_diff_cpp.o $(LDFLAGS)

As as solution, you could leave LDFLAGS alone and use a different
variable, or include $(PGXS) first and *append* your options to
LDFLAGS if your prefer.
For instance (replacing -llibseal.a with -lseal while at it):

   SEAL_LDFLAGS = -L$(INCLUDE_SEAL_LIB) -lseal -lpthread
   include $(PGXS)
   seal_diff_cpp.so: seal_diff_cpp.o
      $(CXX) -Wl,--no-undefined -shared -o seal_diff_cpp.so
   seal_diff_cpp.o $(LDFLAGS) $(SEAL_LDFLAGS)


Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: http://www.manitou-mail.org
Twitter: @DanielVerite

pgsql-general by date:

Previous
From: Dmitry Igrishin
Date:
Subject: Re: Linker errors while creating a PostgreSQL C extension function.
Next
From: Raghavendra Rao J S V
Date:
Subject: How to create a log file in pg_log directory for each execution of my function.