Thread: pgxs "missing magic block ... PG_MODULE_MAGIC" with "MODULE_big"
Hi, I'm trying to add a C-Language function but getting the following error:
$ psql -f test_cfunc.sql
psql:test_cfunc.sql:3: ERROR: incompatible library "/usr/local/pgsql/lib/test_cfunc.so": missing magic block
HINT: Extension libraries are required to use the PG_MODULE_MAGIC macro.
I am calling PG_MODULE_MAGIC in my c file. Minimal Makefile, .c, and .sql files are attached. In the Makefile, if I change "MODULE_big" to "MODULES", it works. However, I want to use "MODULE_big" because I need to later link to a shared library using SHLIB_LINK, and "MODULES" doesn't support SHLIB_LINK as per http://archives.postgresql.org/pgsql-hackers/2012-03/msg00537.php
Any suggestions on how I can get PG_MODULE_MAGIC to work with "MODULE_big" (or link a shared library when using "MODULES")?
Thanks,
Dave
Attachment
Forgot to mention, I am on 9.2.1. "SELECT version();" reports:
PostgreSQL 9.2.1 on x86_64-unknown-linux-gnu, compiled by gcc (Debian 4.4.5-8) 4.4.5, 64-bit
-Dave
On Tue, Jan 8, 2013 at 12:30 PM, David Fuhry <dfuhry@gmail.com> wrote:
Hi, I'm trying to add a C-Language function but getting the following error:$ psql -f test_cfunc.sqlpsql:test_cfunc.sql:3: ERROR: incompatible library "/usr/local/pgsql/lib/test_cfunc.so": missing magic blockHINT: Extension libraries are required to use the PG_MODULE_MAGIC macro.I am calling PG_MODULE_MAGIC in my c file. Minimal Makefile, .c, and .sql files are attached. In the Makefile, if I change "MODULE_big" to "MODULES", it works. However, I want to use "MODULE_big" because I need to later link to a shared library using SHLIB_LINK, and "MODULES" doesn't support SHLIB_LINK as per http://archives.postgresql.org/pgsql-hackers/2012-03/msg00537.phpAny suggestions on how I can get PG_MODULE_MAGIC to work with "MODULE_big" (or link a shared library when using "MODULES")?Thanks,Dave
David Fuhry <dfuhry@gmail.com> writes: > Hi, I'm trying to add a C-Language function but getting the following error: > $ psql -f test_cfunc.sql > psql:test_cfunc.sql:3: ERROR: incompatible library > "/usr/local/pgsql/lib/test_cfunc.so": missing magic block > HINT: Extension libraries are required to use the PG_MODULE_MAGIC macro. > I am calling PG_MODULE_MAGIC in my c file. Minimal Makefile, .c, and .sql > files are attached. In the Makefile, if I change "MODULE_big" to "MODULES", > it works. However, I want to use "MODULE_big" because I need to later link > to a shared library using SHLIB_LINK, and "MODULES" doesn't support > SHLIB_LINK as per > http://archives.postgresql.org/pgsql-hackers/2012-03/msg00537.php I think you're missing the OBJS line, with the result that the .so ends up empty. regards, tom lane
Thank you Tom, you are correct. Adding the line:
OBJS = test_cfunc.o
to the Makefile resolved the problem.
-Dave
On Tue, Jan 8, 2013 at 12:55 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
David Fuhry <dfuhry@gmail.com> writes:I think you're missing the OBJS line, with the result that the .so ends
> Hi, I'm trying to add a C-Language function but getting the following error:
> $ psql -f test_cfunc.sql
> psql:test_cfunc.sql:3: ERROR: incompatible library
> "/usr/local/pgsql/lib/test_cfunc.so": missing magic block
> HINT: Extension libraries are required to use the PG_MODULE_MAGIC macro.
> I am calling PG_MODULE_MAGIC in my c file. Minimal Makefile, .c, and .sql
> files are attached. In the Makefile, if I change "MODULE_big" to "MODULES",
> it works. However, I want to use "MODULE_big" because I need to later link
> to a shared library using SHLIB_LINK, and "MODULES" doesn't support
> SHLIB_LINK as per
> http://archives.postgresql.org/pgsql-hackers/2012-03/msg00537.php
up empty.
regards, tom lane