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Raptor now supports a basic x86 OS build on Windows given the installation
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of an appropriate MinGW GCC toolchain (available separately).
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This is very much a first cut of the core x86 support, and should be considered
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alpha quality, but the fundamentals are now present to build EXE, DLL, IMPLIB
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and LIB TARGETTYPEs, as well as most fixed export TARGETTYPEs. Support for
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functionality not directly related to a release build e.g. freezing, assembler
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listing, single file compilation etc. is either not yet implemented or
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untested, so should not be expected to work correctly.
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In order to build components for an x86 configuration, an SBS_GCCX86BIN
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environment variable must first be set, with a path as its value, pointing to
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the "bin" directory of the MinGW installation intended for use in the build
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e.g.:
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SBS_GCCX86BIN=C:\apps\MinGW\bin
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x86 build configurations should then be available for use as follows:
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sbs -c x86
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sbs -c x86_urel
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sbs -c x86_udeb
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A component supports a build using the above x86 configurations if its
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bld.inf file has an empty or missing PRJ_PLATFORMS section or PRJ_PLATFORMS is
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populated specifically with X86, DEFAULT, BASEDEFAULT or BASEUSERDEFAULT.
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The above x86 group and aliases check that the GCC installation is version 3.4.5
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but, other than that, it is the end user's responsibility to provide a toolchain
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that is suitable for an x86 build; currently the x86 build requires a custom
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GCC toolchain that differs from vanilla MinGW releases.
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By default, and in common with other Raptor build configurations, x86 build
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output locations are architecture rather than toolchain based, therefore the
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following output folders are used:
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%EPOCROOT%\epoc32\release\x86\lib
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%EPOCROOT%\epoc32\release\x86\urel
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%EPOCROOT%\epoc32\release\x86\udeb
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An optional release_x86gcc variant is available if the output directories need
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to differentiate based on the toolchain used. This variant can be used as
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follows:
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sbs -c x86.release_x86gcc
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...and will lead to the use of these output directories:
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%EPOCROOT%\epoc32\release\x86gcc\lib
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%EPOCROOT%\epoc32\release\x86gcc\urel
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%EPOCROOT%\epoc32\release\x86gcc\udeb
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