From what I gather by reading the INSTALL (and FAQ) files from the
source archives I would need to build glibc separately, after I built
binutils, use the same prefix and probably specify the
"--with-headers" option as well. I take it glibc won't be relying on
the GCC cross-compiler otherwise we have a chicken-and-egg scenario on
our hands?
There is a chicken-and-egg scenario.
:-(
I sort of thought as much by what I looked at so far...
You need to first build a vanilla
cross-compiler without building the library.
What does constitute a "vanilla cross-compiler"? Is this a "limited"
cross-compiler without the glibc dependencies (because that is the only
way I think possible to have glibc and a fully-fledged cross compiler
the way I want it)?
You need to use that to
build glibc. Then you need to use glibc to build the full
cross-compiler.
I see, thought as much. Small steps and all that!
Finally, in the same file there is mention that I would also need the
header files for the Linux arch (presumably the target arch as I
already have the host ones installed) - is that really a requirement?
As far as I know, it is a requirement.
I've just downloaded the headers, but (see below) I think I found
exactly what I was looking for...
Also, I take it it is not possible to build glibc at the same time I
build GCC (i.e. by dropping the source tree into the GCC main tree),
right?
Right.
Anyhow look at http://kegel.com/crosstool/ .
W-H-A-T a gem that crosstool.sh file is (provided it works though)!
According to the help page it even builds a canadian cross (build -
x86_64, host & target - ppc) though I have to execute it 3 times to get
that done - that is my GCC2 & 3 built straight away (again, on the
proviso that it works - a big if though). I am looking at the various
variables it requires right now and see if I can manage to include my
own compiler/optimisation options before I fire it up.
If that little gem does what it is supposed to I will be extremely happy
as about 40% of my job will be done - just like that! Fingers crossed
though.
MZ
