Lazarus 64 bits for Linux on Intel CPU ?
lazarus / 1-Linux

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Fred vS · 2011-09-22 13:49

Hello Lazarus lovers.
I want to install Lazarus 64 bits for Intel CPU.
May i use Lazarus-0.9.30.amd64.deb and fpc.2.4.2.0.amd64.deb for Intel
CPU ?
Thanks

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dkjMusic · 2011-09-22 17:07

Can you fire up VirtualBox and give it a try?

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Fred vS · 2011-09-22 17:58

@ djkMusic

Hum, not sure it is a good idea to use VirtualBox because VirtualBox
can not emulate a 64 bits OS...

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DirkS · 2011-09-22 18:10

Quote from: Fred vS on September 22, 2011, 07:58:10 pmHum, not sure it
is a good idea to use VirtualBox because VirtualBox can not emulate a
64 bits OS...
Where did you get that info? See
http://www.virtualbox.org/manual/ch03.html#intro-64bitguests
With the right setup it can even run 64-bit guests on 32-bit hosts...

Gr.
Dirk.

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Dibo · 2011-09-22 18:18

I am using Lazarus on 64 bit Intel. Ubuntu 11.04.  Have no problems.

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Fred vS · 2011-09-22 19:18

@ Dirks
I have install VBox on Ubuntu 32 bits and try to create a Ubuntu 64
bits OS...

See what i get in the image...

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TurboRascal · 2011-09-28 19:48

VirtualBox can only emulate a 32-bit CPU on a 32-bit host; however, it
can emulate 64-bit CPU on a 64-bit host, but even that only if
hardware virtualization is enabled.

To be more specific, VBox doesn't have a software emulation of x86-64
(AMD64) CPU,  but only of 32-bit x86 one.

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Troodon · 2011-09-28 20:17

Quote from: TurboRascal on September 28, 2011, 09:48:51 pmVirtualBox
can only emulate a 32-bit CPU on a 32-bit host;

Actually, this is not entirely corect. On a 64-bit CPU with hardware
virtualization support a 64-bit guest OS can run in a 32-bit host on
one CPU/core only.

For example:

  CPU: AMD 64 Athlon X2
  Host OS: Windows 7 32-bit
  Guest OS: Ubuntu 64-bit

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TurboRascal · 2011-10-07 23:40

Quote from: Troodon on September 28, 2011, 10:17:31 pmQuote from:
TurboRascal on September 28, 2011, 09:48:51 pmVirtualBox can only
emulate a 32-bit CPU on a 32-bit host;

Actually, this is not entirely corect. On a 64-bit CPU with hardware
virtualization support a 64-bit guest OS can run in a 32-bit host on
one CPU/core only.

For example:

  CPU: AMD 64 Athlon X2
  Host OS: Windows 7 32-bit
  Guest OS: Ubuntu 64-bit

I meant 32-bit host machine/CPU, not OS
When the CPU enters hypervisor mode, it obviously doesn't care for the
OS that ran the initial process...