From mailinglists at geldenhuys.co.uk  Wed Apr  1 15:48:17 2026
From: mailinglists at geldenhuys.co.uk (mailinglists at geldenhuys.co.uk)
Date: Wed, 01 Apr 2026 14:48:17 +0100
Subject: [fpc-devel] Gitlab FPC 'main' fails to build on x86_64-linux
Message-ID: <3db077ea1a101477f27f80f9eb684777@geldenhuys.co.uk>

I can't seem to build the latest FPC 3.3.1 'main' branch under 64-bit 
linux.

My build script, which I've always been using:

-----
graemeg at graeme-linux-desktop:/data/devel/fpc-3.3.1$ cat go.sh
#!/bin/sh

TARGET_VER=3.3.1
TARGET=x86_64-linux
COMPILER=/data/devel/fpc-3.2.2/$TARGET/bin/ppcx64
#COMPILER=/usr/bin/fpc

cd src

make clean
make all FPC=$COMPILER OPT="-Fl/usr/local/lib"
make install INSTALL_PREFIX=/data/devel/fpc-$TARGET_VER/$TARGET 
FPC=/data/devel/fpc-$TARGET_VER/src/compiler/ppcx64
-----


graemeg at graeme-linux-desktop:/data/devel/fpc-3.3.1/src (main)$ git 
status
On branch main
nothing to commit, working tree clean

graemeg at graeme-linux-desktop:/data/devel/fpc-3.3.1/src (main)$ git log 
-1
commit 8003027a8cc96f42f15663e7d8189b1854fb0447 (HEAD -> main, 
gitlab/main)
Author: Rika Ichinose <rrunewalsh at gmail.com>
Date:   Wed Apr 1 13:24:43 2026 +0300

     Simplify overflow checks in heap.inc.
-----



And when I try and build using my script, it crashes out with this 
error:


Start compiling package fcl-base for target x86_64-linux.
        Compiling fcl-base/units/x86_64-linux/BuildUnit_fcl_base.pp
External command "/data/devel/fpc-3.3.1/src/compiler/ppcx64  -Tlinux 
-FUfcl-base/units/x86_64-linux/ 
-Fu/data/devel/fpc-3.3.1/src/rtl/units/x86_64-linux/ 
-Fu/data/devel/fpc-3.3.1/src/packages/rtl-objpas/units/x86_64-linux/ 
-Fu/data/devel/fpc-3.3.1/src/packages/pthreads/units/x86_64-linux/ 
-Fufcl-base/src -Fifcl-base/src -Fifcl-base/src/linux 
-Fifcl-base/src/unix -Fifcl-base/src/dummy 
-Fl/usr/lib/gcc/x86_64-linux-gnu/13 -Ur -Xs -O2 -n -Cg 
-Fl/usr/lib/gcc/x86_64-linux-gnu/13 -dx86_64 -dRELEASE -Sc -viq 
fcl-base/units/x86_64-linux/BuildUnit_fcl_base.pp" failed with exit code 
256. Console output:
Target OS: Linux for x86-64
Compiling fcl-base/units/x86_64-linux/BuildUnit_fcl_base.pp
PPU Loading ./rtl-objpas/units/x86_64-linux/system.timespan.ppu
PPU Source: system.timespan.pp not available
Recompiling system.timespan, checksum changed for 
/data/devel/fpc-3.3.1/src/rtl/units/x86_64-linux/classes.ppu
Fatal: Can't find unit system.timespan used by SyncObjs
Fatal: Compilation aborted

The installer encountered the following error:
Compilation of "units/x86_64-linux/BuildUnit_fcl_base.pp" failed
   $0000000000539F79
   $0000000000544FDB
   $0000000000543E71
   $0000000000545311
   $00000000005430BD
   $0000000000545502
   $00000000005452FE
   $00000000005430BD
   $0000000000545502
   $00000000005452FE
   $0000000000545E59
   $00000000005495CF
   $00000000005387E2
   $0000000000538E44
   $00000000004878B6
make[3]: *** [Makefile:2064: distinstall] Error 1
make[3]: Leaving directory '/data/devel/fpc-3.3.1/src/packages'



Regards,
   Graeme

From mailinglists at geldenhuys.co.uk  Wed Apr  1 15:58:48 2026
From: mailinglists at geldenhuys.co.uk (mailinglists at geldenhuys.co.uk)
Date: Wed, 01 Apr 2026 14:58:48 +0100
Subject: [fpc-devel] Gitlab FPC 'main' fails to build on x86_64-linux
In-Reply-To: <3db077ea1a101477f27f80f9eb684777@geldenhuys.co.uk>
References: <3db077ea1a101477f27f80f9eb684777@geldenhuys.co.uk>
Message-ID: <7c9a25a29be4e975ec11daa00f40ae7f@geldenhuys.co.uk>

Sorry, it was my fault. :-(   I recently messed with my fpc.cfg for a 
recent bug report, and forgot to restore the working version.

Regards,
   - Graeme -

From mailinglists at geldenhuys.co.uk  Wed Apr  1 17:19:47 2026
From: mailinglists at geldenhuys.co.uk (mailinglists at geldenhuys.co.uk)
Date: Wed, 01 Apr 2026 16:19:47 +0100
Subject: [fpc-devel] 
 =?utf-8?q?=5BRFC=5D_Add_OPDF_=E2=80=94_Object_Pascal?=
 =?utf-8?q?_Debug_Format_=28-gO_flag=29?=
In-Reply-To: <da2bfae565a4437288cfc799d85839d5@geldenhuys.co.uk>
References: <da2bfae565a4437288cfc799d85839d5@geldenhuys.co.uk>
Message-ID: <6b8b437287cecb1ff2acabd8c38cbb30@geldenhuys.co.uk>

On 2026-03-02 22:59, Graeme Geldenhuys via fpc-devel wrote:
> 
> I'd like to propose adding a new, optional debug information format to
> FPC called OPDF (Object Pascal Debug Format). This is not a
> replacement for DWARF ? it is an additional debug format that can be
> selected with the new -gO compiler flag, similar to how -gw selects
> DWARF.


In case it helps the review process, I've created a Merge Request in
Free Pascal's official GitLab repo:

   https://gitlab.com/freepascal.org/fpc/source/-/merge_requests/1409


As I mentioned before, I welcome any feedback on the approach, the 
compiler
integration, or the format design. Happy to answer questions.

Regards,
   Graeme