minor changes to build and updated readme

README.md

@@ -1,2 +1,20 @@
 # CLibs
 My set of C libraries
+
+| **Library** | **Purpose**                               |
+|-------------|-------------------------------------------|
+| vec         | generic dynamic array data structure      |
+| bstr        | high level string library                 |
+| flag        | CLI flag parsing library inspired by Go's |
+
+Note: This set of libraries still depend on libc for memory allocation, the str* functions, etc. It is not meant to be a standalone library at least for now.
+It is not possible to change the memory allocator used for now but I'll change that later possibly.
+
+## Building
+The recommended way is to just build everything and then take whatever libraries you want from the generated `lib` directory
+and it's corresponding header file from said library directory.
+
+```sh
+$ cmake . -DCMAKE_BUILD_TYPE=Release
+$ make
+```

flag/CMakeLists.txt

@@ -3,3 +3,4 @@ cmake_minimum_required(VERSION 3.10)
 project(flag DESCRIPTION "flag parsing library")
 
 add_library(flag flag.c)
+target_compile_features(flag PUBLIC c_std_11)

vec/CMakeLists.txt

@@ -4,3 +4,4 @@ project(vec DESCRIPTION "dynamically growable vector structure")
 
 add_library(vec STATIC vector.c)
 target_link_libraries(vec PRIVATE m)
+target_compile_features(vec PUBLIC c_std_11)