Mac Library Search Path

Mac library search path map

Jan 12, 2020  With either the desktop or a Finder window as the frontmost application, hold down the option key and select the Go menu. The Library folder will be listed as one of the items in the Go menu. Select Library and a Finder window will open showing the contents of the Library folder.

Path

Library Search Warwick

Mac Library Search Path

Mac Os X Dynamic Library Search Path

I have the following shared libraries linked in my executable:
$ otool -L myexe
mds:
libchartdir.4.dylib (compatibility version 4.0.0, current version 4.1.0)
/opt/local/lib/libQuantLib-0.9.0.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/libboost_date_time-1_34_1.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/libboost_program_options-1_34_1.dylib (compatibility version 0.0.0, current version 0.0.0)
/opt/local/lib/liblog4cpp.4.dylib (compatibility version 5.0.0, current version 5.6.0)
/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
/System/Library/Frameworks/Carbon.framework/Versions/A/Carbon (compatibility version 2.0.0, current version 128.0.0)
/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 11.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.3.11)
/System/Library/Frameworks/QuickTime.framework/Versions/A/QuickTime (compatibility version 1.0.0, current version 861.0.0)
/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
/System/Library/Frameworks/AGL.framework/Versions/A/AGL (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0)
/usr/local/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
libchartdir, the first library in the otool list, does not have an absolute path set. I have to set the DYLD_FALLBACK_LIBRARY_PATH to /opt/local/lib to let dyld find it at runtime.
What makes the other libraries installed under /opt/local/lib (QuantLib, boost) have their path recorded in the executable?