[Lazarus] Cross-compile console program to Linux (Ubuntu)?

[Bo Berglund via Lazarus]

I have a console program for Windows, which was developed using
Delphi2007 and Indy10.
Now I need to port this to Linux (Ubuntu Server 16.04-3 LTS on Intel
i386 CPu).
I have installed Lazarus 1.8.4-32 using the download from the official
Lazarus site: lazarus-1.8.4-fpc-3.0.4-win32.exe

So I have Lazarus ver 1.8.4 and FPC ver 3.0.4 rev 57972 on my Windows
7 Pro X64 laptop.
I have also installed the IndyLaz package to get the Indy10 components
and this works fine.

Given that what do I have to download in order to build the project
for Ubuntu Linux on the Intel platform?
I am assuming that porting from Delphi2007 to Lazarus/FreePascal is
OK...

[Alexey via Lazarus]

I would suggest to install FpcupDeluxe, in it you have button to install cross compilers. and then you can choose Target - Linux in Lazarus project options.
Alex
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[Bo Berglund via Lazarus]

On Mon, 22 Oct 2018 21:09:56 +0200, Bo Berglund via Lazarus

Post by Bo Berglund via Lazarus
So I have Lazarus ver 1.8.4 and FPC ver 3.0.4 rev 57972 on my Windows
7 Pro X64 laptop.
I have also installed the IndyLaz package to get the Indy10 components
and this works fine.

It turns out that this is false information!
This version of FPC/Lazarus has not yet been provided with IndyLaz
package. And I need OnLine Package Manager to do it.

Now I am having problems because I cannot get the installation of OLPM
to work...

I have tried to install the OnlinePackageManager using instructions on
this page:
http://wiki.freepascal.org/Online_Package_Manager#Installation

I did select the available package onlinepackagemanager 1.0, then hit
Install Selection and waited a while until it was done. Then I assume
it was rebuilding the IDE, but nothing much happened when it was done.
So I exited Lazarus and started it again, then went over to Package
Install/Uninstall only to find that the "available" list is now
missing OLPM but at the same time it is not part of the other list and
it does not show up on the main Package menu.

In Package/Package Graph I can find the OLPM entry and it is marked
with a green plus sign and when I click on it the info below shows
this:

Filename:
C:\programs\lazarus_1.8.4-32\components\onlinepackagemanager\onlinepackagemanager.lpk
State: Install on next start
Description: Online package manger

I have exited and restarted Lazarus several times already but it does
not change a thing. No sign of OLPM.

What can I do to actually register OLPM with my Lazarus?

On previous installations this has "just worked" but not now....

[Bo Berglund via Lazarus]

On Mon, 22 Oct 2018 21:54:30 +0200, Bo Berglund via Lazarus

Post by Bo Berglund via Lazarus
In Package/Package Graph I can find the OLPM entry and it is marked
with a green plus sign and when I click on it the info below shows
C:\programs\lazarus_1.8.4-32\components\onlinepackagemanager\onlinepackagemanager.lpk
State: Install on next start
Description: Online package manger
I have exited and restarted Lazarus several times already but it does
not change a thing. No sign of OLPM.
What can I do to actually register OLPM with my Lazarus?

It seems like the problem was another package I had installed before
but which dependent files could no longer be found. So I uninstalled
that package first then reinstalled onlinepackagemanager and after
some more cycles Indy10 has been installed. :)

[Bo Berglund via Lazarus]

On Mon, 22 Oct 2018 21:09:56 +0200, Bo Berglund via Lazarus

Post by Bo Berglund via Lazarus
I have a console program for Windows, which was developed using
Delphi2007 and Indy10.

Now trying to compile the old Delphi sources in FPC/Lazarus and it
stops in a common file on this type of construct:

{$IF CompilerVersion >= 26} {Delphi XE5..}
Fmt := TFormatSettings.Create;
{$IFEND}

The error message is:
IniFileFuncs.pas(55,7) Error: Incompatible types: got "AnsiString"
expected "Int64"
IniFileFuncs.pas(55,7) Error: Compile time expression: Wanted Boolean
but got <erroneous type> at IF or ELSEIF

I guess this might be a FPC difference to Delphi...
How can I make FPC understand that this is a conditional it shall just
ignore?

[Ralf Quint via Lazarus]

Post by Bo Berglund via Lazarus
I guess this might be a FPC difference to Delphi...
How can I make FPC understand that this is a conditional it shall just
ignore?

By first checking if you are compiling in FreePascal in the first place?

{$IFNDEF FPC}
  {$IF CompilerVersion >= 26} {Delphi XE5..}
        Fmt := TFormatSettings.Create;
  {$IFEND}
{$IFEND}

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[Bo Berglund via Lazarus]

On Mon, 22 Oct 2018 21:09:56 +0200, Bo Berglund via Lazarus

Post by Bo Berglund via Lazarus
I have a console program for Windows, which was developed using
Delphi2007 and Indy10.
Now I need to port this to Linux (Ubuntu Server 16.04-3 LTS on Intel
i386 CPu).
I have installed Lazarus 1.8.4-32 using the download from the official
Lazarus site: lazarus-1.8.4-fpc-3.0.4-win32.exe

I have now succeeded in porting the code to Lazarus/FPC and it builds
OK. A Windows32 exe file is produced.

So now to crosscompile for Linux:

When reading the wiki page
http://wiki.lazarus.freepascal.org/Cross_compiling#From_Windows_to_Linux
I understand that the IDE is ready to build for Linux out of the box
provided it is the same CPU family on the target.
So I changed the target from Default to Linux in
ProjectOptions/CompilerOptions/ConfigAndTarget/TargetOS

But when I try to build it does not work, instead I get the following
error:

Compile package FCL 1.0.1: Exit code 1, Errors: 1
Fatal: Cannot find system used by fcllaz of package FCL.

I have no idea what this means, seems to have to do with Lazarus
itself?
What to do next?

[Bo Berglund via Lazarus]

On Tue, 23 Oct 2018 08:21:08 +0200, Bo Berglund via Lazarus

Post by Bo Berglund via Lazarus
When reading the wiki page
http://wiki.lazarus.freepascal.org/Cross_compiling#From_Windows_to_Linux
I understand that the IDE is ready to build for Linux out of the box
provided it is the same CPU family on the target.
So I changed the target from Default to Linux in
ProjectOptions/CompilerOptions/ConfigAndTarget/TargetOS
But when I try to build it does not work, instead I get the following
Compile package FCL 1.0.1: Exit code 1, Errors: 1
Fatal: Cannot find system used by fcllaz of package FCL.

Is the wiki page falsely claiming that all you have to do to compile
for Linux is to set the target to Linux? They say that the compiler is
ready for all targets using the same CPU...

I have looked in my installation directory of Lazarus 1.8.4 which was
installed from the binary installer. There is only a single system.ppu
there and it is in this dir:
C:\Programs\lazarus_1.8.4-32\fpc\3.0.4\units\i386-win32\rtl
Should there not be subdirectories for Linux too?
Or how are you supposed to get these?

[Mattias Gaertner via Lazarus]

On Tue, 23 Oct 2018 08:21:08 +0200

Post by Bo Berglund via Lazarus
[...]
When reading the wiki page
http://wiki.lazarus.freepascal.org/Cross_compiling#From_Windows_to_Linux

Did you install the binutils?
Did you crossbuild the linux fpc files?

Post by Bo Berglund via Lazarus
I understand that the IDE is ready to build for Linux out of the box
provided it is the same CPU family on the target.

fpc calls for example ppcx64, which can cross compile to other OS for
all x86_64 targets. But you need the cross compiled ppu and o
files for this target, here linux. And for Linux you need the binutils
as well. See the wiki.

Post by Bo Berglund via Lazarus
So I changed the target from Default to Linux in
ProjectOptions/CompilerOptions/ConfigAndTarget/TargetOS

That only works after installing the cross compiled fpc files.
After changing the target OS, when you click Ok of the Project
Options, you should have seen an Error dialog "Compiler
C:\lazarus\....exe does not support target x86_64-linux".

Mattias
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