make cavacore an actual library with cmake #487

CAVACORE.md

@@ -40,6 +40,17 @@ This feature can be adjusted.
 The range of an input signal can vary a lot. cavacore can keep the output signal within range in real-time. This feature can be disabled.
 
 
+# Building
+
+use the root CMakeLists.txt to build it:
+
+```
+mkdir build
+cd build
+cmake ..
+cmake --build .
+```
+
 # Usage
 
-See cavacore.h for documentation and the cavacore_test.c application for how to use.
+See cavacore.h for documentation and the cavacore_test.c application for how to use.

CMakeLists.txt

@@ -0,0 +1,6 @@
+# This is only for the cavacore lib, see CAVACORE.md for details
+# to build cava don't use this, use the automake stuff
+
+cmake_minimum_required(VERSION 3.13.0)
+project(cavacore)
+add_library(cavacore STATIC cavacore.c)

cavacore_test.c

@@ -1,6 +1,6 @@
-// cavacore standalone test app, build cava first and compile with:
+// cavacore standalone test app, build cavacore lib first and compile with:
 // gcc -c -g cavacore_test.c
-// gcc -o cavacore_test cavacore_test.o cava-cavacore.o -lm -lfftw3
+// gcc -o cavacore_test cavacore_test.o build/libcavacore.a -lm -lfftw3
 
 #include "cavacore.h"
 #include <math.h>