Hello, I'm trying to install the iphone toolchain from: http://code.google.com/p/iphone-dev/wiki/Building

Unforunately, I'm stuck at this section:
HOWTO obtain the Mac OS X headers on Linux or Windows
* Extract the pax archive inside the Mac OS X 10.4 SDK package.

mkdir MacOSX10.4-Universal-SDK
pushd MacOSX10.4-Universal-SDK
gunzip -c ../MacOSX10.4.Universal.pkg/Contents/Archive.pax.gz | cpio -i
popd

Here are some of the error messages on different platforms:
In Ubuntu, running the following command:
gunzip -c ../MacOSX10.4.Universal.pkg/Contents/Archive.pax.gz | cpio -i
I get:
gzip: ../MacOSX10.4.Universal.pkg/Contents/Archive.pax.gz: No such file or directory
cpio: premature end of archive


When I run the following command:
gunzip -c MacOSX10.4.Universal.pkg
I get:
gzip: MacOSX10.4.Universal.pkg: not in gzip format


In MacOS 10.4.11
When I try to open up the .pkg file (from both the older & newer DMG files), I receive the error:
Open Failed: Couldn't open "MacOSX10.4.Universal.pkg". This package type requires Mac OS X 10.5.

I do not have access to a Mac OS 10.5.

Any help would be appreciated to extract the contents from the .pkg.

-GunNam

Not familiar with this but why would you try to run gunzip on MacOSX10.4.Universal.pkg? Before it was MacOSX10.4.Universal.pkg.gz which was gzipped, now it's not. Not sure why you're getting the cpio premature error but perhaps it was a bad download, but it's clearly gunzipped at this point.

ok, for starters, don't use cpio, a pax archive is not a cpio archive, it is a pax archive.

extracting from linux, use the pax command. the basic unzip format for this is:

that will unzip everything in that archive to the current directory.

instead of gzip -c | program, just do gzip -d and take that actual file and unpax it.

another thing: .pkg files under mac are not real files. .pkg files are actually a folder with stuff inside them. so under linux, you will see that it is actually a folder. same with .app things. you just need to go into the folder and find something.pax and unzip that

good luck,
rabbit2345 ^_^

Thank you for all the replies.
After countless hours, I realized I should find out what is actually in the file so I listed the contents using xar.

Realized that the directions to build the toolchain is probably outdated, because the archive it wants extracted does not even exist in that .pkg.

All input has helped to get me more familiar with linux. Thank you very much!

I am currently dealing with one config error from my toolchain build... if I can't figure it out, you will probably see a new post about it. Thanks again.