Raptor now supports a basic x86 OS build on Windows given the installation

of an appropriate MinGW GCC toolchain (available separately).

This is very much a first cut of the core x86 support, and should be considered

alpha quality, but the fundamentals are now present to build EXE, DLL, IMPLIB

and LIB TARGETTYPEs, as well as most fixed export TARGETTYPEs.  Support for

functionality not directly related to a release build e.g. freezing, assembler

listing, single file compilation etc. is either not yet implemented or

untested, so should not be expected to work correctly.

In order to build components for an x86 configuration, an SBS_GCCX86BIN

environment variable must first be set, with a path as its value, pointing to

the "bin" directory of the MinGW installation intended for use in the build

e.g.:

SBS_GCCX86BIN=C:\apps\MinGW\bin

x86 build configurations should then be available for use as follows:

sbs -c x86

sbs -c x86_urel

sbs -c x86_udeb

A component supports a build using the above x86 configurations if its

bld.inf file has an empty or missing PRJ_PLATFORMS section or PRJ_PLATFORMS is

populated specifically with X86, DEFAULT, BASEDEFAULT or BASEUSERDEFAULT.

The above x86 group and aliases check that the GCC installation is version 3.4.5

but, other than that, it is the end user's responsibility to provide a toolchain

that is suitable for an x86 build; currently the x86 build requires a custom

GCC toolchain that differs from vanilla MinGW releases.

By default, and in common with other Raptor build configurations, x86 build

output locations are architecture rather than toolchain based, therefore the

following output folders are used:

%EPOCROOT%\epoc32\release\x86\lib

%EPOCROOT%\epoc32\release\x86\urel

%EPOCROOT%\epoc32\release\x86\udeb

An optional release_x86gcc variant is available if the output directories need

to differentiate based on the toolchain used.  This variant can be used as

follows:

sbs -c x86.release_x86gcc

...and will lead to the use of these output directories:

%EPOCROOT%\epoc32\release\x86gcc\lib

%EPOCROOT%\epoc32\release\x86gcc\urel

%EPOCROOT%\epoc32\release\x86gcc\udeb