Re: base building problem

[Andrew Johnson <anj@aps.anl.gov>]

M.C.Shao wrote:

> I am building the base Relase3.14beta2 with gnu tools under patched
> solaris 7.So the host  arch is solaris-sparc-gnu, and the target is
> linux-x86.When use "make" in the root level of base, I encountered a
> problem which said "i586-pc-linux-gnu-cc command not found".I guess
> that's the cross-compiler's problem. and this reminds me of that I
> don't have a cross-compiler.What I want to ask is where  I chould get
> or how I could create such a cross-compiler?

To ask the obvious question, why are you cross-compiling code for a 
linux-x86 target on a solaris-sparc-gnu host?  It would be *much* easier 
to either compile EPICS natively on the target itself, or if that's too 
small a system to find a PC running linux to do the compilation.

EPICS *can* run this kind of cross-compilation (Janet Anderson tests EPICS 
builds using a cross-compiler that runs on linux and builds binaries for 
Solaris) but you'll probably have to build gcc and binutils yourself, and 
create a few EPICS configuration files in <base>/configure/os.

If you really want to build your own cross compiler, the CrossGCC FAQ at 
http://www.sthoward.com/CrossGCC/ (getting a little dated now so this 
might not be accurate for recent versions of gcc, and you won't need to 
build libc or gdb) should provide some help in how to do it, or do a 
google search for "building gcc cross-compiler" and you'll get hits for 
many different combinations of host and target architecture.

- Andrew
--
"Life is what happens while you're busy making other plans." - John Lennon