--- a/gcc.rst	Wed Feb 09 23:46:14 2011 +0200
+++ b/gcc.rst	Mon Feb 14 01:09:30 2011 +0200
@@ -40,3 +40,20 @@
 * Predefined macros.
 
   $ gcc -arch ppc -dM -E - < /dev/null | sort
+
+* Default search path.
+
+  $ echo | gcc -v -x c -E -
+
+  $ gcc -print-search-dirs
+install: ...
+programs: ...
+libraries: ...
+
+  $ ld --verbose | grep SEARCH_DIR
+
+'LIBRARY_PATH' and 'LD_LIBRARY_PATH'
+
+  $ cpp -Wp,-v
+  $ cpp -Wp,-lang-c++,-v
+  $ cpp -x c++ -Wp,-v