Question about search for crt?.o files

[Andrew Haley]

On 14/04/11 02:58, David Highley wrote:

> We have the need to capture our compilers into our configuration
> management system so that we build with different versions. So I was
> checking the capture of the compiler by wrapping an strace around a
> compile that is invoked with the -B option to add a new search path
> for the relocated compiler. Everything looked like it was being
> found in the new location except when the crt?.o start up code is
> being looked for.  It appeared that directory locations were looked
> for first and then the file, crt1.o or crti.o, was searched for all
> over the place. The complilations work and the programs execute, but
> it does appear to looking all over the file system for the start up
> code to be linked with the application. This was observed with a
> 4.1.2 g++ build.

crt?.0 are part of the C library, not part of gcc.  We have no control
over these files or where they go, so we have to look for them in the
standard places.

Andrew.