[Bug driver/19856] GCC_EXEC_PREFIX used wrong

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-02-09 19:07 -------
I think this related to PR 14435.  But reading the docs (there is a section in there which is useful to 
read):
In addition, the prefix is used in an unusual way in finding the directories to search for header files. For 
each of the standard directories whose name normally begins with /usr/local/lib/gcc (more precisely, 
with the value of GCC_INCLUDE_DIR), GCC tries replacing that beginning with the specified prefix to 
produce an alternate directory name. Thus, with -Bfoo/, GCC will search foo/bar where it would 
normally search /usr/local/lib/bar. These alternate directories are searched first; the standard 
directories come next. 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19856