How to build Boost with static ICU via Msys2 / mingw-w64 / gcc on Windows?

From: crillion_at_[hidden]
Date: 2022-09-03 16:58:42

  Hello,

 I'm trying to build boost 1.80 on windows 10 with the icu
provided with msys2 (my goal in particular is that boost locale will
build using my installed version of icu).

My build platform is msys2
with mingw-w64 / gcc 12.2. By launching pacman -Q on the msys2-msys
shell I have seen that I have icu 71.1-2 :

(...)

glib2 2.72.2-2 gmp
6.2.1-2 gnupg 2.2.36-1 grep 1~3.0-3 gzip 1.12-2 heimdal-libs 7.7.0-3 icu
71.1-2 inetutils 1.9.4-5 info 6.8-4 less 590-2

(...)

on my system I
have msys2 installed in the following folder C:programsmsys64 and in
C:programsmsys64mingw64 there are the following folders :

 bin
 etc

include
 lib
 libexec
 sbin
 share
 ssl
 var
 x86_64-w64-mingw32

in the
lib folder I have found that there are lib files like libicuio.a,
libicudt.a and libicutest.a .

I extracted boost and then I've given the
usual sequence of commands from the normal cmd shell of windows :

 for
creating b2 :

 bootstrap.bat gcc

 for the actual build of boost, I've
made the following attempts :

 b2 --toolset=gcc address-model=64
-sICU_PATH=C:programsmsys64mingw64

 b2 --toolset=gcc address-model=64
include=C:programsmsys64mingw64include
library-path=C:programsmsys64mingw64lib

 b2 --toolset=gcc
address-model=64 -sICU_PATH=C:programsmsys64mingw64
include=C:programsmsys64mingw64include
library-path=C:programsmsys64mingw64lib

but none of these works : the
build process always writes in its initial phase :

(...)

has_lzma_cputhreads builds : yes [2]
 cxx11_decltype : yes [2]

cxx11_basic_alignas : yes [2]
 iconv (libc) : no [2]
 iconv (separate) :
yes [2]
 icu : no [2]
 icu (lib64) : no [2]
 native atomic int32
supported : yes [2]
 has message compiler : no [2]
 native syslog
supported : no [2]

(...)

what am I supposed to do to let b2 see the
ICU lib files that I have in my msys2 distribution ?

Thanks, 
 Marco 

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