allow overriding the folder for hdapsd.conf

Author: evgeni

src/Makefile.am

@@ -1,3 +1,5 @@
+AM_CPPFLAGS = -DSYSCONFDIR='"$(sysconfdir)"'
+
 sbin_PROGRAMS=hdapsd
 hdapsd_SOURCES=hdapsd.c hdapsd.h input-helper.c input-helper.h
 hdapsd_CFLAGS=$(LIBCONFIG_CFLAGS)

src/hdapsd.c

@@ -398,6 +398,7 @@ void usage ()
 	printf("\n");
 #ifdef HAVE_LIBCONFIG
 	printf("   -c --cfgfile=<cfgfile>            Load configuration from <cfgfile>.\n");
+	printf("                                     By default, configuration is read from "CONFIG_FILE"\n");
 #endif
 	printf("   -d --device=<device>              <device> is likely to be hda or sda.\n");
 	printf("                                     Can be given multiple times\n");

src/hdapsd.h

@@ -1,7 +1,7 @@
 #include <stdio.h>
 
 #define PID_FILE                "/var/run/hdapsd.pid"
-#define CONFIG_FILE             "/etc/hdapsd.conf"
+#define CONFIG_FILE             SYSCONFDIR"/hdapsd.conf"
 #define HDAPS_POSITION_FILE	"/sys/devices/platform/hdaps/position"
 #define MOUSE_ACTIVITY_FILE     "/sys/devices/platform/hdaps/keyboard_activity"
 #define KEYBD_ACTIVITY_FILE     "/sys/devices/platform/hdaps/mouse_activity"