Re: Building gdb on IA64 linux

[Jeff Johnston <jjohnstn@redhat.com>]

Steve Ellcey wrote:
> Jeff,
> 
> I can now build gdb on IA64 without using libunwind, but when I try
> to use libunwind, I get:
> 
> /extra/sje/gdb/src/gdb/ia64-tdep.c: In function 'ia64_find_unwind_table':
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2585: error: 'UNW_INFO_FORMAT_REMOTE_TABLE' undeclared (first use in this function)
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2585: error: (Each undeclared identifier is reported only once
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2585: error: for each function it appears in.)
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2586: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2587: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2588: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c: In function 'ia64_find_proc_info_x':
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2633: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2634: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2637: error: 'union <anonymous>' has no member named 'rti'
> /extra/sje/gdb/src/gdb/ia64-tdep.c:2638: error: 'union <anonymous>' has no member named 'rti'
> 
> What is UNW_INFO_FORMAT_REMOTE_TABLE?  Do I need a new libunwind to get
> this macro?  I am on a redhat 2.6 and I don't have libunwind on my
> system but I am using GCC 4.0 and it has an unwind.h and a libunwind.so
> in the location where I built it.  But, this unwind.h does not have a
> definition of UNW_INFO_FORMAT_REMOTE_TABLE.
> 
> Steve Ellcey
> sje@cup.hp.com
>

Yes, you must have libunwind installed as there are header files installed which 
are needed when building gdb.

There is a check in configure.ac: AC_CHECK_HEADERS(libunwind-ia64.h) that will 
set HAVE_LIBUNWIND_IA64_H.  This flag protects the references to libunwind 
macros/functions in ia64-tdep.c.  Did you go around this check?

-- Jeff J.