Re: [uml-devel] Debugging compilation error

[Rodrigo S. de C. <rc...@im...>]

On Thu, Mar 21, 2002 at 12:50:04AM +0000, David Coulson wrote:
> gcc -Wl,-T,arch/um/link.ld -pg -DPROFILING -Wl,--wrap,__monstartup 
> -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc \
>         -o linux -static arch/um/main.o vmlinux.o -L/usr/lib
> /usr/lib/gcrt1.o: In function `__gmon_start__':
> /usr/src/build/40453-i386/BUILD/glibc-2.2.4/csu/gmon-start.c:66: 
> undefined reference to `__wrap___monstartup'
> collect2: ld returned 1 exit status
> make: *** [linux] Error 1
> 
> I've no idea where that filename comes from, as it doesn't exist here. 
> Turning off gprof support fixed it, but it's something I'd like to work out.

I already had this problem when compiling with gprof and gcov support
after had already compiled without these options. To fix it, either
you run 'make clean' or delete all .o from arch/um dir, and compile
UML again.

By the way, Jeff, I tried to compile with gprof and gcov options
here. However when they are enabled, I get a segmentation fault
message as soon as I run UML and it locks up (it doesn't even start
booting the system or launch gdb). Have you heard of something like
that? Any idea of how I can get info to help you find out what's going
on?

Regards,
-- 
Rodrigo S. de Castro <rc...@im...>