Re: What generates pg_config.h? - Mailing list pgsql-general

On 01/05/2018 03:29 PM, Tom Lane wrote:

Travis Allison <travisallison@gmail.com> writes:

Tom, where's the -l switch exactly?  What command is it attached to? (I'm
not sure what to look for.)

Look into the extension's Makefile for something roughly along the lines
of

Assuming the OP is talking about this:

https://github.com/timescale/timescaledb

I believe there is an intervening step:

# Bootstrap the build system
./bootstrap

If I am following correctly the -I are in:

CMakeLists.txt

# Get PostgreSQL configuration from pg_config
execute_process(
  COMMAND ${PG_CONFIG} --includedir
  OUTPUT_VARIABLE PG_INCLUDEDIR
  OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(
  COMMAND ${PG_CONFIG} --includedir-server
  OUTPUT_VARIABLE PG_INCLUDEDIR_SERVER
OUTPUT_STRIP_TRAILING_WHITESPACE)


There does seem to be an apt install:

http://docs.timescale.com/v0.8/getting-started/installation/linux/installation-apt

with the following caveats:
"
Note: PostgreSQL 9.6 is required for TimescaleDB on Ubuntu distros. Releases with PostgreSQL 10 are coming soon
Prerequisites

    Ubuntu 16.04 or later

Build & Install

    WARNING:If you have another PostgreSQL installation not via apt, this will likely cause problems. If you wish to maintain your current version of PostgreSQL outside of apt, we recommend installing from source. Otherwise please be sure to remove non-apt installations before using this method.

"

CPPFLAGS = -I/usr/include/postgresql

Very likely there's some amount of macro-ization involved, so it might
look more like

INCLUDEDIR = /usr/include/postgresql
...
CPPFLAGS = -I$(INCLUDEDIR)

Furthermore, given our current theory, there's going to be more than
one -I switch on that line, and you want to get rid of just one.

                        regards, tom lane

--
Adrian Klaver
adrian.klaver@aklaver.com