[fpc-pascal] Randomly project fails to link under FreeBSD

[Graeme Geldenhuys]

Hi,

I'm using FPC 2.7.1 under 64-bit FreeBSD 9.1. I have to use 2.7.1
(updated about a week ago), so I could get the fixes for threading and
memory corruption under FreeBSD (disussed a while back on mailing list).

Anyway, every now and again my projects (a few of them) fail to link as
follows

----8<-------------8<-------------8<-------------8<-------------8<----
Hint: Start of reading config file /home/graemeg/.fpc.cfg
Hint: End of reading config file /home/graemeg/.fpc.cfg
Free Pascal Compiler version 2.7.1 [2013/03/04] for x86_64
Copyright (c) 1993-2013 by Florian Klaempfl and others
Target OS: FreeBSD for x86-64
Compiling m2compiler.lpr
Compiling frm_options.pas
...snip...
Linking /data/devel/MasterMaths/m2_system/Bin/x86_64-freebsd/m2compiler
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.fpc+0xa70):
undefined reference to `DEBUGSTART_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.fpc+0xa78):
undefined reference to `DEBUGEND_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.data+0x3d0):
undefined reference to `FINALIZE$_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/frm_options.o:
In function `FORMSHOW':
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:40:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:41:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/frm_options.o:
In function `BTNOKCLICKED':
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:47:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:48:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
m2compiler.lpr(71,1) Error: Error while linking
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.fpc+0xa70):
undefined reference to `DEBUGSTART_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.fpc+0xa78):
undefined reference to `DEBUGEND_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/m2compiler.o:(.data+0x3d0):
undefined reference to `FINALIZE$_$M2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/frm_options.o:
In function `FORMSHOW':
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:40:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:41:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler/units/x86_64-freebsd/frm_options.o:
In function `BTNOKCLICKED':
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:47:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
/data/devel/MasterMaths/m2_system/Source/compiler//frm_options.pas:48:
undefined reference to `M2COMPILER_$$_GM2COMPILER$$TM2COMPILER'
m2compiler.lpr(71,1) Error: Error while linking
m2compiler.lpr(71,1) Fatal: There were 1 errors compiling module, stopping

----8<-------------8<-------------8<-------------8<-------------8<----


I have cleared out every single *.o, *.a, *.ppu etc. file I could find.
I have even created a extrafpc.cfg file to bypass the usage of Lazarus
packages, then use the compiler from the command line, and make sure
everything gets compiled into a single unit output directory. Usage is
as follows

   fpc @extrafpc.cfg m2compiler.lpr


As I said, this linking failure happens randomly with different
projects. I then just keep clearing the unit output directories, try and
rebuild everything, and then magically it will start linking
successfully again???

Any idea why?


Regards,
  - Graeme -

-- 
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
http://fpgui.sourceforge.net/