libgrust: Add libproc_macro and build system

Add some dummy files in libproc_macro along with its build system.

libgrust/ChangeLog:

	* Makefile.am: New file.
	* Makefile.in: Generate.
	* configure.ac: New file.
	* configure: Generate.
	* aclocal.m4: Generate.
	* libproc_macro/Makefile.am: New file.
	* libproc_macro/proc_macro.cc: New file.
	* libproc_macro/proc_macro.h: New file.
	* libproc_macro/Makefile.in: Generate.

contrib/ChangeLog:

	* gcc_update: Add libgrust file dependencies.

Co-authored-by: Arthur Cohen <arthur.cohen@embecosm.com>
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

1 files changed, 487 insertions, 0 deletions

diff --git a/libgrust/libproc_macro/Makefile.in b/libgrust/libproc_macro/Makefile.in
new file mode 100644
index 0000000..9ff1dd6
--- /dev/null
+++ b/libgrust/libproc_macro/Makefile.in
@@ -0,0 +1,487 @@
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