Cannot include files from /usr/local/include even though they are present

I'm not able to compile a project under Xcode Version 4.6.3 (4H1503) when using files located in /usr/local. The error is 'cryptopp/cryptlib.h' file not found. This is similar to a number of other questions, but the 'try this' mentioned in the other topics have not helped.

I have a directory with headers in them. The directory is /usr/local/ios-armv7/include. Within that directory the headers are located in cryptopp/. I am including the files with both #include <cryptopp/cryptlib.h> and #include "cryptopp/cryptlib.h".

In Xcode, I have /usr/local/ios-armv7/include and /usr/local/ios-armv7/include/cryptopp set in every place that will take a path for headers or include files. There are no target overrides. I verified the paths are being added to the command line through -I switches.

I've tried toggling ALWAYS_SEARCH_USER_PATHS. I've tried toggling recursive. I've also tried adding and removing the trailing slash (/). In between each attempts, I perform a full clean. I also used Organizer to remove all data. I even tried using a different compiler (GCC-4.2, which appears completely broken).

What is the trick to get Xcode to honor my search path?

I tracked this problem down to permissions on usr/local/ios-arm7. The permissions were 0600. I'm not sure how/why Finder was able to view them since I did not have permission. After chmod -R 0644 usr/local/ios-arm7, everything worked as expected. I could also remove all the extra paths I threw at the project.