Rewrite Makefile to accomodate file split

slstatus.h

@@ -0,0 +1,75 @@
+/* See LICENSE file for copyright and license details. */
+
+/* battery */
+const char *battery_perc(const char *);
+const char *battery_power(const char *);
+const char *battery_state(const char *);
+
+/* cpu */
+const char *cpu_freq(void);
+const char *cpu_perc(void);
+const char *cpu_iowait(void);
+
+/* datetime */
+const char *datetime(const char *);
+
+/* disk */
+const char *disk_free(const char *);
+const char *disk_perc(const char *);
+const char *disk_total(const char *);
+const char *disk_used(const char *);
+
+/* entropy */
+const char *entropy(void);
+
+/* hostname */
+const char *hostname(void);
+
+/* ip */
+const char *ipv4(const char *);
+const char *ipv6(const char *);
+
+/* kernel_release */
+const char *kernel_release(void);
+
+/* keyboard_indicators */
+const char *keyboard_indicators(void);
+
+/* load_avg */
+const char *load_avg(const char *);
+
+/* num_files */
+const char *num_files(const char *);
+
+/* ram */
+const char *ram_free(void);
+const char *ram_perc(void);
+const char *ram_total(void);
+const char *ram_used(void);
+
+/* run_command */
+const char *run_command(const char *);
+
+/* swap */
+const char *swap_free(void);
+const char *swap_perc(void);
+const char *swap_total(void);
+const char *swap_used(void);
+
+/* temperature */
+const char *temp(const char *);
+
+/* uptime */
+const char *uptime(void);
+
+/* user */
+const char *gid(void);
+const char *username(void);
+const char *uid(void);
+
+/* volume */
+const char *vol_perc(const char *);
+
+/* wifi */
+const char *wifi_perc(const char *);
+const char *wifi_essid(const char *);