Preston Lee's Blog

Tag: troubleshooting

  • Installing The MySQL Ruby Gem When Using The Official MySQL .dmg

    If you installed MySQL using the official .dmg package provided by MySQL AB/Sun and are trying to install the native MySQL gem, you’ll need to pass a bunch of flags to the gem install process to get the thing to compile. Try this..

    sudo gem install mysql — –with-mysql-config=/usr/local/mysql/bin/mysql_config

    ..if you still have issues (check your /opt/local/lib/ruby/gems/<ruby_ver>/gems/mysql-<gem_ver>/mkmf.log file), try this instead..

    sudo gem install mysql — –with-mysql-dir=/usr/local/mysql –with-mysql-include=/usr/local/mysql/include/ –with-mysql-lib=/usr/local/mysql/lib/ –with-mysql-config=/usr/local/mysql/bin/mysql_config

    Run `sudo gem install mysql` and definitely recheck the log file again as the gem install process sometimes reports false positives even if native components fail to install.

  • Ruby Troubleshooting: Hpricot On OS X Leopard

    If you upgraded to Leopard, you may be getting this nasty error when trying to install Hpricot, which is required by other popular gems such as mechanize..

    preston$ sudo gem install mechanize
    Password: ********

    Bulk updating Gem source index for: http://gems.rubyforge.org
    Install required dependency hpricot? [Yn]
    Select which gem to install for your platform (i686-darwin8.10.3)
    1. hpricot 0.6 (mswin32)
    2. hpricot 0.6 (jruby)
    3. hpricot 0.6 (ruby)
    4. hpricot 0.5 (ruby)
    5. hpricot 0.5 (mswin32)
    6. Skip this gem
    7. Cancel installation
    > 3
    Building native extensions. This could take a while…
    ERROR: While executing gem … (Gem::Installer::ExtensionBuildError)
    ERROR: Failed to build gem native extension.

    ruby extconf.rb install mechanize
    checking for main() in -lc… no
    creating Makefile

    make
    gcc -I. -I. -I/opt/local/lib/ruby/1.8/i686-darwin8.10.3 -I. -I/opt/local/include -fno-common -O2 -fno-common -pipe -fno-common -c hpricot_scan.c
    cc -dynamic -bundle -undefined suppress -flat_namespace -L/opt/local/lib -L”/opt/local/lib” -o hpricot_scan.bundle hpricot_scan.o -lruby -lpthread -ldl -lobjc
    /usr/bin/ld: /usr/lib/gcc/i686-apple-darwin8/4.0.1/../../../libpthread.dylib unknown flags (type) of section 6 (__TEXT,__dof_plockstat) in load command 0
    /usr/bin/ld: /usr/lib/gcc/i686-apple-darwin8/4.0.1/../../../libdl.dylib unknown flags (type) of section 6 (__TEXT,__dof_plockstat) in load command 0
    /usr/bin/ld: /usr/lib/gcc/i686-apple-darwin8/4.0.1/../../../libobjc.dylib load command 9 unknown cmd field
    /usr/bin/ld: /usr/lib/gcc/i686-apple-darwin8/4.0.1/../../../libSystem.dylib unknown flags (type) of section 6 (__TEXT,__dof_plockstat) in load command 0
    /usr/bin/ld: /usr/lib/libSystem.B.dylib unknown flags (type) of section 6 (__TEXT,__dof_plockstat) in load command 0
    collect2: ld returned 1 exit status
    make: *** [hpricot_scan.bundle] Error 1

    Gem files will remain installed in /opt/local/lib/ruby/gems/1.8/gems/hpricot-0.6 for inspection.
    Results logged to /opt/local/lib/ruby/gems/1.8/gems/hpricot-0.6/ext/hpricot_scan/gem_make.out

    The issue is that Xcode 3 must be upgraded as well; Hpricot’s native components cannot be built with the older Tiger development tools on Leopard. After installing Xcode 3 from either your Leopard DVD or Apple Developer Connection, run the install again…

    preston$ sudo gem install mechanize

    Install required dependency hpricot? [Yn] Y
    Select which gem to install for your platform (i686-darwin8.10.3)
    1. hpricot 0.6 (mswin32)
    2. hpricot 0.6 (jruby)
    3. hpricot 0.6 (ruby)
    4. hpricot 0.5 (ruby)
    5. hpricot 0.5 (mswin32)
    6. Skip this gem
    7. Cancel installation
    > 3
    Building native extensions. This could take a while…
    Successfully installed mechanize-0.6.11
    Successfully installed hpricot-0.6
    Installing ri documentation for mechanize-0.6.11…
    Installing ri documentation for hpricot-0.6…
    Installing RDoc documentation for mechanize-0.6.11…
    Installing RDoc documentation for hpricot-0.6…

    Success!

  • Solaris 10 x64: Get Your Sound Card Working

    When I built the $1000, 2TB file server, the on-board nVidia HD audio support of the Asus M2NPV-VM motherboard didn’t work out of the box. It’s a trivial fix using the recently open sourced OSS drivers from 4Front Technologies. (I also tested a Creative Audigy 2 PCI sound card using these drivers under Solaris 10 11/06, and the playback worked just as well.)

    1. Download the Solaris x64 .pkg.
    2. `pkgadd -d oss-solaris-v4.0-1004-i386.pkg`
    3. `osstest`. You should here the sweet sweet sound of.. umm.. sound, and the following printed on the console..

    bash-3.00$ osstest
    Sound subsystem and version: OSS 4.0 (build 1004/200707062145) (0x00040002)
    Platform: SunOS/i86pc 5.10 Generic_118855-33

    *** Scanning sound adapter #-1 ***
    /dev/oss/hdaudio0/pcm0 (audio engine 0): nVidia HD Audio play-front output
    Note! Device is in use (by PID 0/VMIX) but will try anyway
    – Performing audio playback test…
    OK OK OK
    /dev/oss/hdaudio0/pcm1 (audio engine 1): nVidia HD Audio play-side output
    – Performing audio playback test…
    OK OK OK
    /dev/oss/hdaudio0/pcm2 (audio engine 2): nVidia HD Audio play-center/LFE output
    – Performing audio playback test…
    OK OK OK
    /dev/oss/hdaudio0/spdout0 (audio engine 3): nVidia HD Audio spdif output
    – Performing audio playback test…
    OK OK OK
    /dev/oss/hdaudio0/pcmin0 (audio engine 4): nVidia HD Audio record input
    – Skipping input only device

    *** All tests completed OK ***

  • OS X Ruby Troubleshooting: "command not found: dot"

    If you’re trying to run rdoc but are getting errors like..

    Generating HTML…
    Diagrams: ./opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:27: command not found: dot -Tismap dot/f_0.dot
    ./opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:27: command not found: dot -Tismap dot/f_1.dot

    ..the package you need to install is called graphviz. You can install it using Darwin Ports on OS X like so..

    sudo port install graphviz