Compiling My Traceroute (MTR) on Mac OS X Mountain Lion

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My Traceroute (MTR) is a very nice tool to get an impression of your network neighborhood. When trying to compile the most recent version of the tool (mtr-0.82) on my Mac (OS X 10.8.1) i ran into this problem:

gcc -g -O2 -Wall -Wno-pointer-sign curses.o -o mtr mtr.o net.o dns.o raw.o split.o display.o report.o getopt.o getopt1.o select.o -lm -ltermcap
Undefined symbols for architecture x86_64:
 "_res_9_dn_expand", referenced from:
 _parserespacket in dns.o
 "_res_9_ninit", referenced from:
 _dns_open in dns.o
 "_res_9_nmkquery", referenced from:
 _dorequest in dns.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make[2]: *** [mtr] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Turns out its missing libresolv. The solution is simple:

Europa:mtr-0.82 justusbeyer$ export LDFLAGS="-lresolv"
Europa:mtr-0.82 justusbeyer$ ./configure --prefix=/usr --without-gtk
<lots of configure output> 
Europa:mtr-0.82 justusbeyer$ make

 

After Xcode-Update to 4.3 xcodebuild fails

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The recent update to Xcode 4.3 marks a change in how Apple sets up developer systems. Until now all development-specific stuff (libraries, headers, Xcode itself, …) resided in /Developer. With 4.3 that directory is obsolete. The new directory is:

/Applications/Xcode.app/Contents/Developer

So if you use command line build tools like xcodebuild and see errors like this:

Error: No developer directory found at /Developer. Run /usr/bin/xcode-select to update the developer directory path.

… you might need to tell the system about the new path:

sudo /usr/bin/xcode-select -switch /Applications/Xcode.app/Contents/Developer

Mac OS X Lion 10.7.3 doesn’t sync Mobile Documents (SOLVED)

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Before 10.7.3 the somewhat hidden iCloud Documents folder …

~/Library/Mobile Documents

… was a nice DropBox alternative to keep personal data on several Macs in sync. GoodReader on iOS also used that mechanism to synchronize files between GoodReader installations on different iOS devices and the Mac(s) of the user. The latest Mac OS X update 10.7.3 seems to have broken that feature. The folder on the Mac remains empty.

Update 14.02.2011: It looks like Apple has solved the problem. Sync is working again for me.

Update 21.02.2011: If you read the comments you’ll see the problem is not really solved. What can be said so far is that the sync problems are rather related to a bug in Mac OS X 10.7.3 than Apple wanting to keep us from using this nice DropBox-like feature. Workaround after the break… Continue reading →

SSH X11-Forwarding auf VServer funktioniert nicht

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Mit SSH kann man die X11-Bildschirmausgabe eines entfernt gestarteten Programms problemlos auf sein lokales Display umleiten. Dabei tunnelt und verschlüsselt SSH die übertragenen Bildinhalte und Eingaben. Beim Zugriff auf einen virtuellen Linux-Server kann das jedoch daran scheitern, dass dort das Erstellen bestimmter Socket-Typen nicht gestattet ist. Continue reading →

iPhoto ’11 und Canon-RAW-Bilder

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Canon EOS 60D Raw-Foto in iPhoto

Ich mag iPhoto. Obwohl das Programm sich eher an Menschen richtet, deren Interesse an Bildbearbeitung sich auf das Klicken des “Optimieren”-Buttons beschränkt, taugt es auch zum Verwalten größerer Bildersammlungen. Die Performance reißt sicher niemanden vom Hocker, reicht mir in der Regel aber. Bei den RAW-Bildern von meiner Canon EOS 60D ist die Sache nun aber leider etwas anders: Das Laden eines einmal bearbeiteten Bildes dauert auf dem MacBook Pro ca. 20 Sekunden. Ein schnelles Durchgucken der Bilder ist da nicht mehr drin.