Hello!

We use common scripts to check various PostgreSQL modules with various PostgreSQL major versions. It is easier to set the required PG_CONFIG in the enviroment than to change various make commands. In particular, they are quite common if we want to build, install or run installcheck in a specific directory. The PATH enviroment variable also works, but PG_CONFIG is usually sufficient and we want to be sure of that.

On 2025-09-29 15:50, Peter Eisentraut wrote:
I think the current text is preferable.  This allows running

make PG_CONFIG=...

so that you can pick a different PostgreSQL installation for a particular build.

If you always want to use a particular PostgreSQL installation, then you could alter the PATH in the environment.

I don't know that there is a use case of setting only PG_CONFIG in the environment that is not covered by these other two approaches.

--
Marina Polyakova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company


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