Link libgrpc from the bindings

Author: agagniere

README.md

@@ -2,6 +2,28 @@
 
 Status: Work in progress
 
+| Refname  | libGRPC version | Zig `0.16.x` | Zig `0.15.x` |
+|----------|-----------------|--------------|--------------|
+| `1.76.0` | `v1.76.0`       | ✅           | ✅           |
+
+## Use
+
+Add the dependency in your `build.zig.zon` by running the following command:
+```zig
+zig fetch --save git+https://github.com/allyourcodebase/grpc#master
+```
+
+Then, in your `build.zig`:
+```zig
+const grpc = b.dependency("grpc", { .target = target, .optimize = optimize });
+
+// to use from Zig:
+mod.addImport("cgrpc", grpc.module("cgrpc"));
+
+// to use from C:
+exe.linkLibrary(grpc.artifact("grpc"));
+```
+
 ## Bump dependencies
 
 When bumping upstream version, also bump dependencies. Example:

build.zig

@@ -263,13 +263,15 @@ pub fn build(b: *Build) !void {
             \\#include <grpc/credentials.h>
             \\#include <grpc/byte_buffer_reader.h>
         );
-        const binding = b.addTranslateC(.{
+        const grpc_capi = b.addTranslateC(.{
             .root_source_file = try include_all.getDirectory().join(b.allocator, "grpc_api.h"),
             .target = target,
             .optimize = optimize,
         });
-        binding.addIncludePath(upstream.path("include"));
-        _ = binding.addModule("cgrpc");
+        grpc_capi.addIncludePath(upstream.path("include"));
+
+        const bindings = grpc_capi.addModule("cgrpc");
+        bindings.linkLibrary(libgrpc);
     }
 }