[fpc-pascal] Building FPC with gdb support for SPARC

[Mark Morgan Lloyd]

I think I've worked out how to build fpc and fp 2.0.4 for SPARC starting off
from 2.0.0, many thanks in particular to Jonas. The next question, before I try
moving the result to a virgin machine, is how to add gdb support.

I eventually found the libraries at
ftp://ftp.freepascal.org/pub/fpc/contrib/libgdb/v6.3/ and figured I'd try using
them rather than ploughing my way through the toolchain sources which looked
like a 60Mb download for Debian "Sarge". After a certain amount of trial and
error I worked out that the files needed to be put in /fpcsrc/libgdb/linux for
make to use them.

It looks as though the point at which they are initially used is OK:

make -C gdbint smart
make[4]: Entering directory `/fpcsrc/packages/base/gdbint'
make all LINKSMART=1 CREATESMART=1
make[5]: Entering directory `/fpcsrc/packages/base/gdbint'
/bin/mkdir -p units/sparc-linux
/fpcsrc/compiler/ppcsparc -XX -CX -Ur -Xs  -n -Fu/fpcsrc/rtl/units/sparc-linux
	-Fl/fpcsrc/libgdb/linux -Fo/fpcsrc/libgdb/linux -FE. -FUunits/sp
/usr/bin/ar: creating units/sparc-linux/libpgdbver.a
make gdbint.ppu GOTGDBVER=1
make[6]: Entering directory `/fpcsrc/packages/base/gdbint'
Using GDB GDB_V603
/fpcsrc/compiler/ppcsparc -XX -CX -Ur -Xs  -n -Fu/fpcsrc/rtl/units/sparc-linux
	-Fl/fpcsrc/libgdb/linux -Fo/fpcsrc/libgdb/linux -FE. -FUunits/sp
/bin/rm -f gdbver gdbver.o
make[6]: Leaving directory `/fpcsrc/packages/base/gdbint'
/fpcsrc/compiler/ppcsparc -XX -CX -Ur -Xs  -n -Fu/fpcsrc/rtl/units/sparc-linux
	-Fl/fpcsrc/libgdb/linux -Fo/fpcsrc/libgdb/linux -FE. -FUunits/sp
/usr/bin/ar: creating units/sparc-linux/libpgdbcon.a
make[5]: Leaving directory `/fpcsrc/packages/base/gdbint'
make[4]: Leaving directory `/fpcsrc/packages/base/gdbint'

(Sorry, that's slightly truncated by my telnet client).

However further on things go badly wrong:

/bin/mkdir -p /fpcsrc/ide/units/sparc-linux
/fpcsrc/compiler/ppcsparc -dBrowserCol -dGDB -Ur -Xs  -n -Ur -dNOCATCH
  -Fu/fpcsrc/compiler -Fu/fpcsrc/compiler/sparc -Fu/fpcsrc/compiler/targes
make[5]: Leaving directory `/fpcsrc/ide/compiler'
make[4]: Leaving directory `/fpcsrc/ide'
make testgdb
make[4]: Entering directory `/fpcsrc/ide'
LibGDB found in /fpcsrc/libgdb/linux/libgdb.a
make[4]: Leaving directory `/fpcsrc/ide'
make fpc_all
make[4]: Entering directory `/fpcsrc/ide'
/fpcsrc/compiler/ppcsparc -Fl/fpcsrc/libgdb/linux -Ur -Xs  -n -Sg
  -Fu/fpcsrc/rtl/units/sparc-linux -Fu/fpcsrc/fv/units/sparc-linux -Fu/fpcsrc/s
/fpcsrc/libgdb/linux/libgdb.a(gdbtypes.o)(.text+0x1154): In function
  `create_array_type':
/mnt/hda1/florian/gdb-6.3.woody/gdb/gdbtypes.c:752: undefined reference
  to `__muldi3'
/fpcsrc/libgdb/linux/libgdb.a(ada-lang.o)(.text+0x1098): In function
  `max_of_size':
/mnt/hda1/florian/gdb-6.3.woody/gdb/ada-lang.c:519: undefined reference to
  `__ashldi3'

And so on. The obvious questions are:

i)   Are precompiled binaries of the gdb interface library available for Debian
Sarge? So far I can't track down an appropriate standard package.

ii)  Can I compile them myself without breaking my toolchain, and if so what
configure parameters etc. do I need?

iii) What am I missing that is blindingly obvious? :-)

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]