Skip to content

The isysroot Issue

Jump to bottom
Volker Enderlein edited this page Dec 25, 2019 · 1 revision

You are here: Home → Documentation → Mac information page → Coin3D/Mac FAQ → Universal Binaries → The isysroot Issue

I have the Coin UB framework installed, but SoQt/Sc21 does not find it.

To create UBs on a PPC machine, the Universal Binary SDK needs to be specified by passing the -isysroot option to gcc. This is taken care of by our configure script, however there is one small issue: As this option changes the root directory of where system libraries and frameworks are expected to reside, any frameworks located in /Library/Frameworks will not be found!

Consider this scenario:

  • You configure Coin as a Universal Binary, using the --enable-universal configure flag.
  • This flag causes "-isysroot /Developer/SDKs/MacOSX10.4u.sdk" to be added to the CFLAGS variable, which means that the instead of /System/Library/Frameworks/OpenGL.framework, the path /Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks/OpenGL.framework will be used instead. This is intentional, and fine so far.
  • Everything goes well, Coin ends up being installed in /Library/Frameworks/Inventor.framework
  • You configure SoQt as a Universal Binary, using the --enable-universal configure flag.
  • This flag causes "-isysroot /Developer/SDKs/MacOSX10.4u.sdk" to be added to the CFLAGS variable, which means that the instead of /System/Library/Frameworks/OpenGL.framework, the system looks for /Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks/OpenGL.framework instead. This is intentional, and fine so far.
  • However, this also means that instead of /Library/Frameworks/Inventor.framework, the system looks for /Developer/SDKs/MacOSX10.4u.sdk/Library/Frameworks/Inventor.framework instead. This is obviously a problem.

The solution is simple: Create a symbolic link in the 10.4u SDK...

sudo mkdir -p /Developer/SDKs/MacOSX10.4u.sdk/Library/Frameworks
    sudo ln -s /Library/Frameworks/Inventor.framework \
               /Developer/SDKs/MacOSX10.4u.sdk/Library/Frameworks/

... after installing Coin (but before running SoQt-configure).

If you are using the framework installation of Qt-4, you will need to do the same for the Qt frameworks. Something like this should
do the trick:

cd /Library/Frameworks
  for i in Qt*.framework; do sudo ln -s /Library/Frameworks/$i \
  /Developer/SDKs/MacOSX10.4u.sdk/Library/Frameworks/ ; done

Finally, you have to also take this into consideration when you build a Universal Binary application, so do not forget to also create a symlink for Sc21 (or SoQt, as appropriate) in /Developer/SDKs/MacOSX10.4u.sdk/Library/Frameworks/

Clone this wiki locally