Hi, On Fri, Aug 09, 2024 at 09:38:16AM +0200, Holger Jakobs wrote: > When trying to ./configure PostgreSQL 17 beta3, it complained that the ICU > libraries weren't installed, when actually they were. > > On top of the ICU libraries themselves, another, seemingly unrelated, > package had to be installed as well. > > On Ubuntu, this has to be done: apt install pkg-config > > I expect this to be the same on a Debian system, and maybe others. This is discussed here: https://www.postgresql.org/docs/17/install-requirements.html > A hint to this package in some README or BUILD file or in the error output > of ./configure may be of great help. I think you are right, the error could be improved. This is because currently pkg-config support is not actively checked for and the autoconf macros just fail in this case I believe. Michael