Output from ./configure win32gcc
------------------------------------

Configuring for win32gcc
Checking for libX11 ... /usr/X11R6/lib
Checking for libXpm ... /usr/X11R6/lib
Checking for GL/gl.h ... /usr/X11R6/include
Checking for libGL, or libMesaGL ... /usr/X11R6/lib
Checking for libGLU, or libMesaGLU ... /usr/X11R6/lib
Checking for Inventor/SoType.h ... no
Checking for libInventor, libCoin, or coin* ... no
Checking for libInventorXt, libSoXt, libSoQt, or soqt* ... no
Checking for mysql.h ... no
Checking for libmysqlclient ... no
Checking for libpq-fe.h ... /usr/include
Checking for libpq ... /lib
Checking for qt.h ... no
Checking for libqt-mt, libqt, qt-mt*, or qt ... no
Checking for sql.h ... no
Checking for libsqlod ... no
Checking for rfio_api.h ... no
Checking for libshift, shiftmd, or shift ... no
Checking for libpacklib, packmd, or packlib ... no
Checking for libkernlib, kernmd, or kernlib ... no
Checking for libPythia6 ... no
Checking for libVenus ... no
Checking for dcap.h ... no
Checking for libdcap ... no
Checking for chirp_client.h ... no
Checking for libchirp_client ... no
Checking for AliEnAPI++.h ... no
Checking for libAliEnAPI++ ... no
Checking for jpeglib.h ... /usr/include
Checking for png.h ... no
Checking for tiffio.h ... /usr/include
Checking for gif_lib.h ... /usr/include
Checking for libjpeg ... /lib
Checking for libtiff ... /lib
Checking for libungif ... /lib
Checking for libz ... /lib
Checking for libpng ... no
Checking for ldap.h ... no
Checking for libldap ... no
Checking for libxml/tree.h ... /usr/include/libxml2
Checking for libxml2_a, or libxml2 ... /lib
Checking for globusdir ... no
Checking for GLOBUS_LOCATION ... no
Checking for t_server.h ... no
Checking for libsrp ... no
Checking for libgmp ... no
Checking for libmisc ... no
Checking for pwauth.h ... no
Checking for krb5.h ... no
Checking for libk5crypto ... no
Checking whether we're using MIT Kerberos ... no
Checking for libkrb5 ... no
Checking for kinit ... no
Checking for shadow passwords ... no
Checking whether to build libTable ... no
Checking whether setresuid declared in /usr/include/unistd.h ... no
Writing config/Makefile.config ... done
Writing include/config.h ... done
Writing bin/root-config ... done
Writing etc/system.rootrc ... done
Writing etc/system.rootauthrc ... done
Writing etc/system.rootdaemonrc ... done
Writing etc/root.mimes ... done
Writing bin/memprobe ... done
Writing build/misc/root-help.el ... done
Writing config.status ... done

To build ROOT type:

   make


Output from make
------------------
...
g++: unrecognized option `-pthread'
Creating library file: lib/libThread.dll.a
Info: resolving vtable for TVirtualMutexby linking to __imp___ZTV13TVirtualMutex (auto-import)
Info: resolving vtable for TNamedby linking to __imp___ZTV6TNamed (auto-import)
Info: resolving vtable for TTimerby linking to __imp___ZTV6TTimer (auto-import)
Info: resolving vtable for TSysEvtHandlerby linking to __imp___ZTV14TSysEvtHandler (auto-import)
Info: resolving _gDebug by linking to __imp__gDebug (auto-import)
Info: resolving _gContainerMutex by linking to __imp__gContainerMutex (auto-import)
Info: resolving _gCINTMutex by linking to __imp__gCINTMutex (auto-import)
Info: resolving _gThreadTsd by linking to __imp__gThreadTsd (auto-import)
Info: resolving _gThreadXAR by linking to __imp__gThreadXAR (auto-import)
Info: resolving _gROOT by linking to __imp__gROOT (auto-import)
Info: resolving _gSystem by linking to __imp__gSystem (auto-import)
g++: unrecognized option `-pthread'
g++: unrecognized option `-pthread'
g++: unrecognized option `-pthread'
In file included from /usr/include/libxml2/libxml/parser.h:781,
                 from /usr/include/libxml2/libxml/globals.h:18,
                 from /usr/include/libxml2/libxml/threads.h:35,
                 from /usr/include/libxml2/libxml/xmlmemory.h:214,
                 from /usr/include/libxml2/libxml/tree.h:1090,
                 from xml/src/TXMLEngine.cxx:25:
/usr/include/libxml2/libxml/encoding.h:28:19: iconv.h: No such file or directory
In file included from /usr/include/libxml2/libxml/parser.h:781,
                 from /usr/include/libxml2/libxml/globals.h:18,
                 from /usr/include/libxml2/libxml/threads.h:35,
                 from /usr/include/libxml2/libxml/xmlmemory.h:214,
                 from /usr/include/libxml2/libxml/tree.h:1090,
                 from xml/src/TXMLEngine.cxx:25:
/usr/include/libxml2/libxml/encoding.h:136: error: 'iconv_t' is used as a type, 
   but is not defined as a type.
/usr/include/libxml2/libxml/encoding.h:137: error: 'iconv_t' is used as a type, 
   but is not defined as a type.
make: *** [xml/src/TXMLEngine.o] Error 1