[MAC] Compiling on OSX Lion / Xcode 4.1`

i5Js · 2012-06-04 22:39

I'm just asking....

**Memphiz** · 2012-06-05 13:08

Well if you want to compile for 64bit you have to do everything from the start (but using a configure --with-darwin-osx --with-arch=x86_64 and a ARCHS=x86_64 in the xcodebuild command).

64bit can access > 4 GB RAM. Thats the only massive difference imho (some people state that 64bit code runs faster on 64bit hardware but i wouldn't sign that).

i5Js · 2012-06-05 16:46

Thanks for your explanation Memphiz.

barberio · 2012-06-11 11:30

(2012-06-05 13:08)Memphiz Wrote: 64bit can access > 4 GB RAM. Thats the only massive difference imho (some people state that 64bit code runs faster on 64bit hardware but i wouldn't sign that).

32bit user-space code can't directly address ranges beyond the 32bit limit. But accessing things like memory that are abstracted by the operating system are fine. (Need to handle an array larger than 4GB in a user space 32 bit program? Partition it, use nested addressing.)

What 64 bit does do is that theoretically all operations that involve arrays all double in speed because of increased bandwidth in the MMX registers. Multimedia decoding usually uses a lot of array operations. In practice the gains are smaller than double, but they do exist.

Incidentally, is any work being done to make the build environment capable of building to both intel archs at the same time to allow for universal binary production without having to have two separate build areas and make the fat binaries by hand?

**davilla** · 2012-06-12 05:09

(2012-06-11 11:30)barberio Wrote: 64bit user-space code can't directly address ranges beyond the 32bit limit.

Wrong. Run top on darwin, 64-bit apps have access to a much, much larger virtual memory space. 32-bit apps are limited to a 2GB virtual memory space. You can malloc huge arrays under a 64-bit app, not that it helps XBMC much to create huge arrays...

barberio · 2012-06-13 00:14

Typo.

**davilla** · 2012-06-13 02:33

(2012-06-11 11:30)barberio Wrote: Incidentally, is any work being done to make the build environment capable of building to both intel archs at the same time to allow for universal binary production without having to have two separate build areas and make the fat binaries by hand?

No, it's would be a pain in the ass with all the depends, specially with python and ffmpeg. It would be easier to wrap a makefile around xbmc/depends build and drive the build from there.

Plus it would be about 2X the size and we already push the size boundary at around 40MBs compressed.

i5Js · 2012-07-28 19:03

New error with the last nightly:

Code:

/bin/sh -c /Users/i5Js/xbmc/build/XBMC.build/Release/XBMC.build/Script-1D64E5FA157BD742001ACEBE.sh

ln: /Users/i5Js/xbmc/build/Release//XBMC.dSYM: Operation not permitted

Command /bin/sh failed with exit code 1

** BUILD FAILED **

The following build commands failed:

    PhaseScriptExecution genoutputdirlink build/XBMC.build/Release/XBMC.build/Script-1D64E5FA157BD742001ACEBE.sh

(1 failure)

Any help with this?

Thanks,

BR

**davilla** · 2012-07-28 20:03

quit xcode, restart it, clean all, build.

**Memphiz** · 2012-07-28 20:13

rm -r /Users/i5Js/xbmc/build/Release/XBMC.dSYM and retry

i5Js Senior Member Posts: 227 Joined: Dec 2009 Reputation: 0	2012-06-04 22:39 Post: #61 I'm just asking.... (This post was last modified: 2012-06-04 22:41 by i5Js.)
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i5Js Senior Member Posts: 227 Joined: Dec 2009 Reputation: 0	2012-06-05 16:46 Post: #63 Thanks for your explanation Memphiz.
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barberio Senior Member Posts: 118 Joined: Aug 2010 Reputation: 2	2012-06-13 00:14 Post: #66 Typo.
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davilla Team-XBMC Developer Posts: 10,506 Joined: Feb 2008 Reputation: 58	2012-07-28 20:03 Post: #69 quit xcode, restart it, clean all, build. MediaInfo : http://mediainfo.sourceforge.net/ Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
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Memphiz Team-XBMC Developer Posts: 7,915 Joined: Feb 2011 Reputation: 91 Location: germany	2012-07-28 20:13 Post: #70 rm -r /Users/i5Js/xbmc/build/Release/XBMC.dSYM and retry AppleTV2/iPhone/iPod: HowTo find debug logs and everything else which the devs like so much: click here HowTo setup NFS for XBMC: Wiki NFS HowTo configure avahi (zeroconf): Wiki Avahi READ THE IOS FAQ!: iOS FAQ (This post was last modified: 2012-07-28 20:13 by Memphiz.)
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