qpb: Add support for protobuf.
Infrastructure that allows protocol buffers to be used in Quagga. The
changes below comprise of:
- Build hooks
- Protobuf definitions for common types.
- Library routines for working with protobuf, including functions
that help translate between common quagga types and their protobuf
equivalents.
Changes:
* qpb/{Makefile.am,README.txt,qpb.h,.gitignore}
Add the qpb library, which provides shared code and definitions
for using protocol buffers in quagga code.
* qpb/qpb.proto
Protobuf definitions that can be shared by all of quagga.
* qpb/linear_allocator.h
An allocator that allocates memory by walking down towards the end
of a buffer. This is used to cheaply allocate/deallocate memory on
the stack for protobuf operations.
* qpb/qpb_allocator.[ch]
Thin layer that allows a linear allocator to be used with the
protobuf-c library.
* common.am
This is an automake fragment that is intended to be shared by
Makefile.am files in the tree. It currently includes definitions
related to protobuf.
* configure.ac
- Add logic to optionally build protobuf code.
By default, protobuf support is enabled if the protobuf C
compiler (protoc-c) is available, and the associated header
files/library can be found.
The user can choose to override this behavior via the new
--disable-protobuf/--enable-protobuf flags.
- Include the quagga protobuf library (qpb) in the build.
* .gitignore
Ignore source code generated by protobuf compiler.
* Makefile.am
Add 'qpb' to the list of subdirectories.
Signed-off-by: Avneesh Sachdev <avneesh@sproute.com>
Edited: Paul Jakma <paul.jakma@hpe.com>: Change the sense of the
configure enable option to require explicit specifying, as
an experimental feature.
diff --git a/qpb/Makefile.am b/qpb/Makefile.am
new file mode 100644
index 0000000..0fbda61
--- /dev/null
+++ b/qpb/Makefile.am
@@ -0,0 +1,30 @@
+include ../common.am
+
+AM_CPPFLAGS = -I.. -I$(top_srcdir) -I$(top_srcdir)/lib -I$(top_builddir)/lib $(Q_PROTOBUF_C_CLIENT_INCLUDES)
+
+PROTOBUF_INCLUDES=-I$(top_srcdir)
+PROTOBUF_PACKAGE = qpb
+
+lib_LTLIBRARIES = libquagga_pb.la
+libquagga_pb_la_LDFLAGS = -version-info 0:0:0
+
+if HAVE_PROTOBUF
+protobuf_srcs = \
+ qpb_allocator.c
+
+protobuf_srcs_nodist = \
+ qpb.pb-c.c
+endif
+
+libquagga_pb_la_SOURCES = \
+ linear_allocator.h \
+ qpb.h \
+ qpb.c \
+ qpb_allocator.h \
+ $(protobuf_srcs)
+
+nodist_libquagga_pb_la_SOURCES = $(protobuf_srcs_nodist)
+
+CLEANFILES = $(Q_CLEANFILES)
+BUILT_SOURCES = $(Q_PROTOBUF_SRCS)
+EXTRA_DIST = qpb.proto