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Compile to 32 bit on Linux 64 bit [message #49169]

Sat, 30 December 2017 17:12

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

Hello,

has anybody tried to compile a U++ program for 32 bit from a 64 bit machine?
What package should I install?
I am tired two use two different computers.

Thanks,
Luigi

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Re: Compile to 32 bit on Linux 64 bit [message #49174 is a reply to message #49169]

Sun, 31 December 2017 16:33

coolman
Messages: 119
Registered: April 2006
Location: Czech Republic

Experienced Member

Hi,

Hard to say - I don't know your OS for the build and target binaries.

If your OS is Linux (Ubuntu), take a look at UPP cmake and scripts for the installation and building.

BR, Radek

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Re: Compile to 32 bit on Linux 64 bit [message #49185 is a reply to message #49169]

Wed, 03 January 2018 22:03

Zbych
Messages: 328
Registered: July 2009

Senior Member

forlano wrote on Sat, 30 December 2017 17:12

has anybody tried to compile a U++ program for 32 bit from a 64 bit machine?
What package should I install?

I did - just simple console app (no GUI) and all I had to install was some multilib package.
I found in my notes for ubuntu 14.04:
sudo apt-get install gcc-multilib
sudo apt-get install gcc-4.9-multilib g++-4.9-multilib
sudo apt-get install gcc-5-multilib g++-5-multilib

And don't forget to add -m32 to compiler options.

[Updated on: Wed, 03 January 2018 22:36]

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Re: Compile to 32 bit on Linux 64 bit [message #49204 is a reply to message #49185]

Sun, 07 January 2018 14:20

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

Zbych wrote on Wed, 03 January 2018 22:03

forlano wrote on Sat, 30 December 2017 17:12

has anybody tried to compile a U++ program for 32 bit from a 64 bit machine?
What package should I install?

I did - just simple console app (no GUI) and all I had to install was some multilib package.
I found in my notes for ubuntu 14.04:
sudo apt-get install gcc-multilib
sudo apt-get install gcc-4.9-multilib g++-4.9-multilib
sudo apt-get install gcc-5-multilib g++-5-multilib

And don't forget to add -m32 to compiler options.

Hello Zbych,

thanks for the answer. Can you post the .bm file you have used to compile the U++ package?
I have installed multilib and used -m32 option but still getting complain from the compiler.
Perhaps even the .h and lib used should be addressed properly.

thanks,
Luigi

[Updated on: Sun, 07 January 2018 14:21]

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Re: Compile to 32 bit on Linux 64 bit [message #49223 is a reply to message #49204]

Mon, 08 January 2018 21:23

Zbych
Messages: 328
Registered: July 2009

Senior Member

forlano wrote on Sun, 07 January 2018 14:20

Can you post the .bm file you have used to compile the U++ package?
I have installed multilib and used -m32 option but still getting complain from the compiler.
Perhaps even the .h and lib used should be addressed properly.

I just made a copy of GCC.bm and added -m32 to both compile and link options. My GCC32.bm:

BUILDER = "GCC";
COMPILER = "g++";
COMMON_OPTIONS = "-m32";
COMMON_CPP_OPTIONS = "-std=c++14";
COMMON_C_OPTIONS = "";
COMMON_LINK = "-m32";
COMMON_FLAGS = "";
DEBUG_INFO = "2";
DEBUG_BLITZ = "1";
DEBUG_LINKMODE = "1";
DEBUG_OPTIONS = "-O0";
DEBUG_FLAGS = "";
DEBUG_LINK = "";
RELEASE_BLITZ = "0";
RELEASE_LINKMODE = "1";
RELEASE_OPTIONS = "-O3 -ffunction-sections -fdata-sections";
RELEASE_FLAGS = "";
RELEASE_LINK = "-Wl,--gc-sections";
DEBUGGER = "gdb";
ALLOW_PRECOMPILED_HEADERS = "0";
DISABLE_BLITZ = "0";
PATH = "";
INCLUDE = "/usr/include/freetype2;/usr/include/gtk-2.0;/usr/include/glib-2.0;/usr/lib/glib-2.0/include;/usr/lib/gtk-2.0/include;/usr/include/cairo;/usr/include/pango-1.0;/usr/include/atk-1.0;/usr/include/gdk-pixbuf-2.0;/usr/lib/i386-linux-gnu/glib-2.0/include;/usr/lib/x86_64-linux-gnu/glib-2.0/include;/usr/lib/i386-linux-gnu/gtk-2.0/include;/usr/lib/x86_64-linux-gnu/gtk-2.0/include;/usr/include/gtk-3.0/gdk";
LIB = "/usr/X11R6/lib";
LINKMODE_LOCK = "0";

And I made the test on ubuntu 16.04 this time. All I had to install was:
sudo apt-get install gcc-multilib g++-multilib
sudo apt-get install lib32z1-dev

[Updated on: Mon, 08 January 2018 21:26]

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Re: Compile to 32 bit on Linux 64 bit [message #49247 is a reply to message #49223]

Wed, 10 January 2018 15:18

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

Zbych wrote on Mon, 08 January 2018 21:23

And I made the test on ubuntu 16.04 this time. All I had to install was:
sudo apt-get install gcc-multilib g++-multilib
sudo apt-get install lib32z1-dev

I confirm that this works even on lubuntu 17.10 for CONSOLE appliccation.

However for GUI program it is not enough. Other libraries in :i386 version need to be installed.
At moment I was not able to install everything. The Xft lib in 32 bit mode cannot stay with the one in 64 bit (apt-get want to remove one to accomodate the other). So I preferred to not spoil the 64 bit system. Maybe exist some way to install what is necessery.

Luigi

edit: today I have installed libxft-dev:i386 . The installation removed the libxft-dev at 64 bit. However I was able to compile a 32 bit application.
Then I tried to compile the 64 bit application. Obviously the compiler complained the missing libxft-dev. I tried to install it but it removed the 32 bit version! A nightmare.
It seems libxft-dev cannot coexist in the same machine in 32 and 64 bit mode. This prevent to compile easily a program in 32 and 64 bit... at least on lubuntu

[Updated on: Thu, 11 January 2018 20:10]

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Re: Compile to 32 bit on Linux 64 bit [message #49264 is a reply to message #49247]

Sat, 13 January 2018 18:16

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

forlano wrote on Wed, 10 January 2018 15:18

edit: today I have installed libxft-dev:i386 . The installation removed the libxft-dev at 64 bit. However I was able to compile a 32 bit application.
Then I tried to compile the 64 bit application. Obviously the compiler complained the missing libxft-dev. I tried to install it but it removed the 32 bit version! A nightmare.
It seems libxft-dev cannot coexist in the same machine in 32 and 64 bit mode. This prevent to compile easily a program in 32 and 64 bit... at least on lubuntu

Today I succeeded to compile a 32 bit GUI app on a 64 bit platform (Lubuntu 16.10).
I had to install several libraries (I I remember correctly):

libfreetype6:i386
libx11-dev:i386
libxrender-dev:i386

with:
sudo apt-get install LIBNAME

and then the tricky

libxft-dev:i386

that produced conflict with the 64 bit version. I tried to download it via

sudo apt-get download libxft-dev:i386

and then with a double click it opened the deb packager program that installed it without checking anything else.
At this point the compilation was OK. I tested the program on a real 32 bit computer and it worked.

Luigi

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