@@ -, +, @@ 
---
 hardinfo/dt_util.c                | 3 +++
 modules/benchmark/bench_results.c | 3 +++
 modules/computer.c                | 5 +++++
 modules/computer/boots.c          | 3 +++
 modules/computer/os.c             | 3 +++
 modules/devices.c                 | 9 +++++++++
 modules/devices/printers.c        | 2 ++
 modules/network.c                 | 9 +++++++++
 8 files changed, 37 insertions(+)
--- a/hardinfo/dt_util.c	
+++ a/hardinfo/dt_util.c	
@@ -29,6 +29,9 @@ 
 #include "dt_util.h"
 #include "appf.h"
 
+/* Prototype */
+int dtr_inh_find(dtr_obj *, char *, int);
+
 static struct {
     char *name; int type;
 } prop_types[] = {
--- a/modules/benchmark/bench_results.c	
+++ a/modules/benchmark/bench_results.c	
@@ -21,6 +21,9 @@ 
 #include <inttypes.h>
 #include <json-glib/json-glib.h>
 
+/* Suppress implicit declaration warnings */
+extern int cpu_procs_cores_threads(int *p, int *c, int *t);
+
 /* in dmi_memory.c */
 uint64_t memory_devices_get_system_memory_MiB();
 gchar *memory_devices_get_system_memory_types_str();
--- a/modules/computer.c	
+++ a/modules/computer.c	
@@ -40,6 +40,11 @@ 
 
 #define THISORUNK(t) ( (t) ? t : _("(Unknown)") )
 
+/* Suppress implicit declaration warnings */
+extern void scan_languages(OperatingSystem * os);
+extern void scan_boots_real(void);
+extern void scan_groups_do(void);
+
 /* Callbacks */
 gchar *callback_summary(void);
 gchar *callback_os(void);
--- a/modules/computer/boots.c	
+++ a/modules/computer/boots.c	
@@ -21,6 +21,9 @@ 
 #include "hardinfo.h"
 #include "computer.h"
 
+/* Suppress implicit declaration warnings */
+void scan_os(gboolean reload);
+
 void
 scan_boots_real(void)
 {
--- a/modules/computer/os.c	
+++ a/modules/computer/os.c	
@@ -23,6 +23,9 @@ 
 #include "computer.h"
 #include "distro_flavors.h"
 
+/* Suppress implicit declaration warnings */
+extern void scan_languages(OperatingSystem * os);
+
 static gchar *
 get_libc_version(void)
 {
--- a/modules/devices.c	
+++ a/modules/devices.c	
@@ -40,6 +40,15 @@ 
 #include "dt_util.h"
 #include "udisks2_util.h"
 
+/* Suppress implicit declaration warnings */
+extern int cpu_procs_cores_threads(int *p, int *c, int *t);
+extern void __scan_dmi(void);
+extern void __scan_dtree(void);
+extern void __scan_ide_devices(void);
+extern void __scan_scsi_devices(void);
+extern void __scan_input_devices(void);
+extern void __scan_usb(void);
+
 gchar *callback_processors();
 gchar *callback_gpu();
 gchar *callback_monitors();
--- a/modules/devices/printers.c	
+++ a/modules/devices/printers.c	
@@ -16,6 +16,8 @@ 
  *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/* Need for strptime() */
+#define _XOPEN_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
--- a/modules/network.c	
+++ a/modules/network.c	
@@ -37,6 +37,11 @@ 
 
 #include <vendor.h>
 
+/* Need for inet_addr() */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
 #include "network.h"
 
 /* Callbacks */
@@ -57,6 +62,10 @@ void scan_shares(gboolean reload);
 void scan_arp(gboolean reload);
 void scan_statistics(gboolean reload);
 
+/* Suppress implicit declaration warnings */
+extern void scan_samba(void);
+extern void scan_nfs_shared_directories(void);
+
 static ModuleEntry entries[] = {
     {N_("Interfaces"), "network-interface.png", callback_network, scan_network, MODULE_FLAG_NONE},
     {N_("IP Connections"), "network-connections.png", callback_connections, scan_connections, MODULE_FLAG_NONE},
--