[Bug plugins/48425] New: installed plugin headers fail to compile, include non-existent files

[boris at kolpackov dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48425

           Summary: installed plugin headers fail to compile, include
                    non-existent files
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: plugins
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: boris@kolpackov.net


Since gcc 4.6.0, installed plugin headers for the C++ language (i.e., those in
/usr/lib/gcc/x86_64-linux-gnu/4.6/plugin/include/cp/) include a number of files
as "c-family/..." (e.g, cp/cp-tree.h includes "c-family/c-common.h"), however,
those headers do not exist in the c-family/ subdirectory. Instead, they all
seem to be installed into the /usr/lib/gcc/x86_64-linux-gnu/4.6/plugin/include/
directory.

Here is the error message I get when trying to build my plugin:

/usr/lib/gcc/x86_64-linux-gnu/4.6.1/plugin/include/cp/cp-tree.h:43:31: fatal
error: c-family/c-common.h: No such file or directory

Manually removing the c-family/ prefix from the include directives in header
files in the cp/ subdirectory fixed the problem for me.