Update all READMEs.

README.md

@@ -0,0 +1,19 @@
+[LibIPC][libipc] examples in many languages:
+- C
+- Zig
+- Crystal
+
+and soon even more!
+
+# Build
+
+Just type `make` in the right directory.
+
+# Some makefile utilities
+
+All examples' makefiles include `mk/makefile.utils`.
+Go have a look.
+You'll be able to ask for a static build, run an application with valgrind with many options, and so on.
+For example: `make STATIC=1 build` will compile your example as a static executable (in all languages).
+
+[libipc]: https://git.baguette.netlib.re/Baguette/libipc

c/README.md

@@ -1,6 +1,25 @@
-Some C examples, nothing fancy.
-Implementation is straightforward.
+[LibIPC][libipc] C examples: `pong` and `pongd` (simple service and its client, just echoing received messages).
+Implementations are straightforward.
 
-# Build
+## Build
 
 `make`
+
+Some options are available, such as static builds.
+
+```sh
+make STATIC=1 # Build static executables.
+```
+
+## Usage
+
+```sh
+./zig-out/bin/pongd # run the service
+./zig-out/bin/pong  # run the client
+```
+
+## LICENSE
+
+ISC
+
+[libipc]: https://git.baguette.netlib.re/Baguette/libipc

crystal/README.md

@@ -1,12 +1,10 @@
-# LibIPC examples
-
 Crystal LibIPC examples, using [libipc bindings shard][bindings].
 
-## Installation
+## Build
 
 ```sh
 # Compiles all examples.
-shards build
+make
 ```
 
 Currently there are 2 examples:
@@ -21,7 +19,7 @@ Currently there are 2 examples:
 ./bin/pong  # run the client
 ```
 
-# LICENCE
+## LICENSE
 
 ISC
 

zig/README.md

@@ -0,0 +1,34 @@
+Zig [LibIPC][libipc] examples:
+`pong` and `pongd` (as you find in all other examples).
+`tcpd` and `ipcd`, to make any LibIPC application network-ready.
+Documentation will come soon for these.
+
+## Build
+
+```sh
+# Compiles all examples.
+make
+```
+
+Several options are available.
+
+```sh
+# Compiles all examples.
+make STATIC=1 # Build static executables.
+make ZIG_OPTIM=ReleaseSmall # Build small executables.
+```
+
+Read the makefile.
+
+## Usage
+
+```sh
+./zig-out/bin/pongd # run the service
+./zig-out/bin/pong  # run the client
+```
+
+## LICENSE
+
+ISC
+
+[libipc]: https://git.baguette.netlib.re/Baguette/libipc