[Boost-users] [Locale] MinGW + ICU + cross compiling = wchar errors?

Subject: [Boost-users] [Locale] MinGW + ICU + cross compiling = wchar errors?
From: Jookia (166291_at_[hidden])
Date: 2012-10-29 06:07:49

Hello!

I'm trying to compile Boost.Locale 1.51.0 with ICU 1.50 support in 
x86_64 MinGW-w64 4.7.2.

So to start off, I have a structure of all my libs, includes and whatnot 
at /home/jookia/Programming/mingw64.

I've built ICU using this command and installed it:

CXXFLAGS=-fpermissive ../configure 
--prefix=/home/jookia/Programming/mingw64/ --host x86_64-w64-mingw32 
--with-cross-build=/home/jookia/Programming/local/icu/source/build 
--enable-static --enable-shared --with-data-packaging=archive 
--with-library-bits=64

Building Boost uses this user-config:

using gcc : 4.7 : x86_64-w64-mingw32-g++
   :
   <rc>x86_64-w64-mingw32-windres
   <archiver>x86_64-w64-mingw32-ar
   <compileflags>-I/home/jookia/Programming/mingw64/include/
   <linkflags>-L/home/jookia/Programming/mingw64/lib/
;

and this command:

bjam threadapi=win32 target-os=windows variant=release threading=multi 
link=shared runtime-link=shared 
--prefix=/home/jookia/Programming/mingw64 --user-config=user-config.jam 
--without-python --without-mpi --layout=tagged -sNO_BZIP=1 -sNO_ZLIB=1 
install

In order to try and build Boost.Locale I've patched its Jamfile to 
remove the shared libstdc++ stuff as MinGW doesn't seem to support it, 
and also rename all of the searched-lib <name>s to their MSVC 
equivalents so I can find those.

The command it used to build is this (stuff omitted to save space):

"x86_64-w64-mingw32-g++" 
"-Wl,--out-implib,bin.v2/libs/locale/build/.../libboost_locale-mt.dll.a" 
-o "bin.v2/libs/locale/build/.../libboost_locale-mt.dll" -Wl,-h 
-Wl,libboost_locale-mt.dll -shared -Wl,--start-group ...  -Wl,-Bstatic 
-Wl,-Bdynamic -licuuc -licuin -licudt -liconv -Wl,--end-group 
-L/home/jookia/Programming/mingw64/lib/ -mthreads

Compiling works fine up until linking, where it gives a few errors like 
this (paths and mangled names omitted to save sapce):

bin.v2/.../formatter.o:formatter.cpp:(... undefined reference to 
`icu_50::UnicodeString::UnicodeString(wchar_t const*, int)'

Is there any solution to this or is this something to do with MinGW's 
lack of support for wchars?

Thanks,
Jookia.