= MinGW =

Find and install MinGW and MSYS. Start from http://www.mingw.org/

Install g++ but do not install MinGW make.

I suggest creating a dev.bat, where changes to PATH are collected:
{{{
PATH=c:\mingw\bin;%PATH%
}}}

= Perl =

Perl is the base of all higher level tools in Geoinformatica. The following assumes Perl 5.10.0

The makefile.mk in win32/ is the build configuration. I'm adding -mms-bitfields to line 525. see 
[http://markmail.org/message/6zlo6cktiqa72eht this discussion]

{{{
BUILDOPT	+= -fno-strict-aliasing -DPERL_MSVCRT_READFIX -mms-bitfields
}}}

Also, I change INST_TOP to $(INST_DRV)\Geoinformatica

The build is easy, in dos command prompt:
{{{
dmake
dmake install
}}}
Perl modules are always built in shell using dmake, which is available at CPAN as Perl itself.

lib/ExtUtils/Liblist/Kid.pm needs to be patched with [wiki:KidPmDiff Kid.pm.diff] (works for EU::MM 6.52) to make it find import libraries that end with .dll.a

Save [wiki:KidPmDiff Kid.pm.diff] to a file called diff, and issue command
{{{
patch -p0 Kid.pm <diff
}}}
in msys shell.

= GTK+ =

GTK+

I'm not building these myself. We'll need both

ftp://ftp.gtk.org/pub/gtk/v2.10/win32/ and

http://gladewin32.sourceforge.net

since we need Gtk2::!GladeWin 

= Glib, Cairo, Pango, Gtk2, and Gtk2-GladeXML modules =

All these modules can be found from http://search.cpan.org/~tsch/

ExtUtils::Depends and ExtUtils::!PkgConfig are prerequisites to these and also available at the above page. Currently the Depends.pm  needs to be patched with a patch attached to 
[https://rt.cpan.org/Ticket/Display.html?id=45224 this bug report]

Also pango.exports needs (1.220) 
{{{
gtk2perl_pango_attribute_register_custom_type
gtk2perl_pango_attribute_get_type
gtk2perl_pango_attr_iterator_get_type
gtk2perl_pango_script_iter_get_type
}}}

and newSVPangoRectangle and !SvPangoRectangle need to be removed from Gtk2.exports (1.220).

= Data access and geo libraries =

These are built in MSYS. Most are used by GDAL.

* pq to access data in PostgreSQL and PostGIS
  * it's possible to use the libpq from the Windows ports of these 
* expat, needed for curl
  * there's a good Windows port with devel support available in it's home page 
* curl, needed for WMS, WCS, WFS
* GEOS for simple features methods
* Proj4 for cartographic projections
  * the DLL needs to be made manually: 

{{{
cd src
gcc -shared -o libproj.dll -Wl,--out-implib=libproj.dll.a \
-Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive \
.libs/libproj.a -Wl,--no-whole-archive /c/mingw/lib/libmingw32.a
}}}

[http://postgis.refractions.net/pipermail/postgis-users/2004-June/004960.html See also this]

* GDAL
  * GTK+ may cause problems because it contains libtiff, I move libtiff includes away and use the internal libtiff
  * $(GDAL_ROOT)/ needs to be removed from GNUmakefile
  * I've made a gdal.pc, which is used by Geo::Raster and Geo::Vector
{{{
prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: GDAL
Description: Geospatial Data Abstraction Library
Version: 1.7.0
Requires: libcurl xerces-c
Libs:  -L${exec_prefix}/lib -lgdal.dll -lgeos.dll -lgeos_c.dll -lexpat -lpq -ljpeg -lpng12 -lz
Cflags:  -I${prefix}/include
}}}
* libral
  * there's a MinGW specific Makefile, use it The DLL's may be bloated because of debug code, use strip --strip-debug x.dll to remove it. 

= Perl interface to GDAL =

In CPAN there is Geo::GDAL, whose latest version is for the latest version of GDAL. It is in practice the same as the one distributed with the GDAL source code. I recommend that you always build the Geo::GDAL module separately from GDAL itself, after you have built and installed GDAL. In the GDAL source directory, while in MSYS, say (this requires swig):

{{{
cd swig/perl
rm *wrap*
make generate
}}}

Then in dos command prompt

{{{
perl Makefile.PL
make
make test
make install
}}}

= Geo::Raster and Geo::Vector =

These two modules are interdependent, so dmake install both before running dmake test in either (this is a bug that should be corrected).

= Gtk2::Ex::Geo = 

In a case the image-base in Makefile had to be changed to the actual base, shown by the depends -tool.