[oe] Prebuilt toolchains

[Gary Thomas]

I'd like to use my own toolchains when building OpenEmbedded.
I've tried to follow the information at:
   http://docs.openembedded.org/usermanual/usermanual.html#commonuse_prebuilt_toolchain
It's a bit terse and confusing, so I'm just trying to see
what I need (I think the section tries to discuss too many
concepts at once)

Anyway, I added these lines to my local.conf:
   TARGET_SYS = "${TARGET_ARCH}-${TARGET_OS}"
   ASSUME_PROVIDED += " virtual/${TARGET_PREFIX}gcc "
   ASSUME_PROVIDED += " virtual/libc "

This led to a number of other inferences which I don't understand.
   NOTE: selecting glibc to satisfy virtual/libintl due to PREFERRED_PROVIDERS
   NOTE: selecting glibc to satisfy runtime libsegfault due to PREFERRED_PROVIDER_virtual/libc = glibc
   NOTE: selecting linux-libc-headers to satisfy runtime linux-libc-headers-dev due to PREFERRED_PROVIDER_linux-libc-headers = linux-libc-headers
   NOTE: selecting glibc to satisfy runtime glibc due to PREFERRED_PROVIDER_virtual/libc = glibc
   NOTE: selecting gcc-cross-intermediate to satisfy virtual/powerpc-linux-gcc-intermediate due to PREFERRED_PROVIDERS
   NOTE: selecting linux-libc-headers to satisfy linux-libc-headers due to PREFERRED_PROVIDERS
   NOTE: selecting glibc to satisfy virtual/libiconv due to PREFERRED_PROVIDERS
   NOTE: selecting gcc-cross to satisfy runtime libgcc due to PREFERRED_PROVIDER_virtual/powerpc-linux-gcc = gcc-cross
   NOTE: selecting binutils-cross to satisfy virtual/powerpc-linux-binutils due to PREFERRED_PROVIDERS
   NOTE: selecting glibc-initial to satisfy virtual/powerpc-linux-libc-initial due to PREFERRED_PROVIDERS
   NOTE: selecting glibc to satisfy virtual/powerpc-linux-libc-for-gcc due to PREFERRED_PROVIDERS
   NOTE: selecting gcc-cross-initial to satisfy virtual/powerpc-linux-gcc-initial due to PREFERRED_PROVIDERS

At which point, OE goes off on its merry way to build the
internal toolchains.

What am I missing?

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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