Install from source code(follow the manual)
system version: Ubuntu 22.04 LTS
pg version: PostgreSQL 15beta2 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0, 64-bit
install step:
./configure --with-perl --with-python --with-icu ICU_CFLAGS='-I/usr/include/unicode' ICU_LIBS='-L/usr/lib/icu' --enable-debug --with-pgport=5439
make world
sudo su
make install world
mkdir -p /usr/local/pgsql/data
chown jian /usr/local/pgsql/data
su - jian
/usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
/usr/local/pgsql/bin/pg_ctl -D /usr/local/pgsql/data -l logfile start
/usr/local/pgsql/bin/createdb test
/usr/local/pgsql/bin/psql test
I installed ICU4C 71.1package.
use /usr/bin/icuinfo return
<icuSystemParams type="icu4c">
<param name="copyright"> Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html </param>
<param name="product">icu4c</param>
<param name="product.full">International Components for Unicode for C/C++</param>
<param name="version">71.1</param>
<param name="version.unicode">14.0</param>
<param name="platform.number">4000</param>
<param name="platform.type">Linux</param>
<param name="locale.default">en_US</param>
<param name="locale.default.bcp47">en-US</param>
<param name="converter.default">UTF-8</param>
<param name="icudata.name">icudt71l</param>
<param name="icudata.path"></param>
<param name="cldr.version">41.0</param>
<param name="tz.version">2022a</param>
<param name="tz.default">Asia/Kolkata</param>
<param name="cpu.bits">64</param>
<param name="cpu.big_endian">0</param>
<param name="os.wchar_width">4</param>
<param name="os.charset_family">0</param>
<param name="os.host">x86_64-pc-linux-gnu</param>
<param name="build.build">x86_64-pc-linux-gnu</param>
<param name="build.cc">gcc</param>
<param name="build.cxx">g++</param>
<param name="uconfig.internal_digitlist">1</param>
<param name="uconfig.have_parseallinput">1</param>
</icuSystemParams>
ICU Initialization returned: U_ZERO_ERROR
Plugins are disabled.
But now I cannot ICU. when I create an collation related to ICU then
ERROR: ICU is not supported in this build
--
I recommend David Deutsch's <<The Beginning of Infinity>>
Jian