Warnings while linking on Mac OSX 4.8.1 (using pre-packaged Qt binaries)

I get the following link warnings when linking on OSX with 4.8.1:

• ld: warning: directory not found for option '-L/usr/local/pgsql/lib'
• ld: warning: directory not found for option '-L/tmp/qt-stuff-85167/source/qt-everywhere-opensource-src-4.8.1/Desktop/Qt/4.8.1/gcc/lib'
  This behavior is nearly identical to a bug which existed in 4.7.0 (closed in 4.7.1): https://bugreports.qt-project.org/browse/QTBUG-13462

Neither of these linker errors was present in 4.8.0.

(This could be a duplicate bug. Someone else may have filed it. However, using the built-in search engine, bugs like https://bugreports.qt-project.org/browse/QTBUG-13462 were not returned in the search results, so I don't know if one already exists for 4.8.1.

Here are the full compile/link commands:
g++ -c -pipe -g -gdwarf-2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -Wall -W -DQT_CORE_LIB -DQT_SHARED -I../../../../QtSDK/Desktop/Qt/4.8.1/gcc/mkspecs/macx-g++ -I../qt-console1 -I../../../../QtSDK/Desktop/Qt/4.8.1/gcc/lib/QtCore.framework/Versions/4/Headers -I../../../../QtSDK/Desktop/Qt/4.8.1/gcc/include/QtCore -I../../../../QtSDK/Desktop/Qt/4.8.1/gcc/include -I. -I../qt-console1 -I. -F/Users/asdf/QtSDK/Desktop/Qt/4.8.1/gcc/lib -o main.o ../qt-console1/main.cpp
g++ -headerpad_max_install_names -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -o qt-console1 main.o -F/Users/asdf/QtSDK/Desktop/Qt/4.8.1/gcc/lib -L/Users/asdf/QtSDK/Desktop/Qt/4.8.1/gcc/lib -framework QtCore -L/usr/local/pgsql/lib -L/tmp/qt-stuff-85167/source/qt-everywhere-opensource-src-4.8.1/Desktop/Qt/4.8.1/gcc/lib

Thanks.