4 files changed, 14 insertions, 10 deletions
diff --git a/Makefile b/Makefile
index d30a8cd..6ba8c06 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CFLAGS = -std=c99 -I ./ -Wall -Wextra -pedantic -Wno-deprecated-declarations -D_XOPEN_SOURCE=700L
 LDFLAGS = -lSDL2 -lSDL2_ttf -lm
 
-SRC = main.c microui.c renderer.c widget.c ui.c unit.c engine.c compressor.c eprintf.c cwalk.c toml.c
+SRC = main.c microui.c renderer.c widget.c ui.c unit.c engine.c compressor.c eprintf.c cwalk.c toml.c util.c
 OBJ = ${SRC:.c=.o}
 HDR = microui.h renderer.h widget.h ui.h unit.h engine.h eprintf.h util.h cwalk.h toml.h
 
diff --git a/compressor.c b/compressor.c
index bca4210..358849b 100644
--- a/compressor.c
+++ b/compressor.c
@@ -26,7 +26,6 @@ static int parse_volume_flow(double val, const char *unit, Flow *flow);
 static int lsearch(const void *key, const void *base, size_t n, size_t size, int (*cmp)(const void *keyval, const void *datum));
 static int toml_filter(const struct dirent *de);
 static int cmp_flow_unit(const void *key, const void *datum);
-static void free_arr(void **arr, int n);
 
 
 /* Load descriptions of all of the compressor maps.
@@ -269,11 +268,3 @@ toml_filter(const struct dirent *de) {
 	}
 	return strcmp(".toml", extension) == 0; /* extension is ".toml". */
 }
-
-static void
-free_arr(void **arr, int n) {
-	while (n-- > 0) {
-		free(arr[n]);
-	}
-	free(arr);
-}
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..436a304
--- /dev/null
+++ b/util.c
@@ -0,0 +1,11 @@
+#include <stdlib.h>
+
+#include "util.h"
+
+void
+free_arr(void **arr, int n) {
+	while (n-- > 0) {
+		free(arr[n]);
+	}
+	free(arr);
+}
diff --git a/util.h b/util.h
index 0a48edd..8c7a28d 100644
--- a/util.h
+++ b/util.h
@@ -1,3 +1,5 @@
 #define nelem(arr) (sizeof(arr)/sizeof(arr[0]))
 #define min(a, b) ((a < b) ? a : b)
 #define max(a, b) ((a > b) ? a : b)
+
+void free_arr(void **arr, int n);