Make all required includes explicit

Information as seen by IWYU 0.12 + clang 9 on Linux

97 files changed, 642 insertions, 373 deletions

diff --git a/Action.c b/Action.c
index f53acf7b..b5bd5b54 100644
--- a/Action.c
+++ b/Action.c
@@ -8,28 +8,32 @@ in the source distribution for its full text.
 #include "config.h"
 
 #include "Action.h"
+
+#include <pwd.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
 #include "Affinity.h"
 #include "AffinityPanel.h"
 #include "CategoriesPanel.h"
+#include "CommandScreen.h"
 #include "CRT.h"
 #include "EnvScreen.h"
-#include "CommandScreen.h"
+#include "FunctionBar.h"
+#include "IncSet.h"
+#include "InfoScreen.h"
+#include "ListItem.h"
+#include "Macros.h"
 #include "MainPanel.h"
 #include "OpenFilesScreen.h"
 #include "Process.h"
+#include "ProvideCurses.h"
 #include "ScreenManager.h"
 #include "SignalsPanel.h"
 #include "TraceScreen.h"
-#include "Platform.h"
+#include "Vector.h"
 #include "XUtils.h"
 
-#include <ctype.h>
-#include <math.h>
-#include <pwd.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <sys/param.h>
-#include <sys/time.h>
 
 Object* Action_pickFromVector(State* st, Panel* list, int x, bool followProcess) {
    Panel* panel = st->panel;
diff --git a/Action.h b/Action.h
index 40300ed4..e63b6810 100644
--- a/Action.h
+++ b/Action.h
@@ -7,8 +7,13 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+#include <sys/types.h>
+
 #include "Header.h"
+#include "Object.h"
 #include "Panel.h"
+#include "Process.h"
 #include "ProcessList.h"
 #include "Settings.h"
 #include "UsersTable.h"
diff --git a/Affinity.c b/Affinity.c
index 852d4d5f..4d78944c 100644
--- a/Affinity.c
+++ b/Affinity.c
@@ -12,8 +12,11 @@ in the source distribution for its full text.
 
 #include <stdlib.h>
 
+#include "XUtils.h"
+
 #ifdef HAVE_LIBHWLOC
 #include <hwloc.h>
+#include <hwloc/bitmap.h>
 #ifdef __linux__
 #define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_THREAD
 #else
diff --git a/Affinity.h b/Affinity.h
index 6d744dde..0797b366 100644
--- a/Affinity.h
+++ b/Affinity.h
@@ -8,6 +8,11 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h"
+
+#include <stdbool.h>
+
+#include "Object.h"
 #include "Process.h"
 #include "ProcessList.h"
 
diff --git a/AffinityPanel.c b/AffinityPanel.c
index ab17b420..a8cb66ee 100644
--- a/AffinityPanel.c
+++ b/AffinityPanel.c
@@ -5,21 +5,30 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "config.h"
+#include "config.h" // IWYU pragma: keep
 
 #include "AffinityPanel.h"
 
 #include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "CRT.h"
+#include "FunctionBar.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "Settings.h"
 #include "Vector.h"
 #include "XUtils.h"
 
 #ifdef HAVE_LIBHWLOC
 #include <hwloc.h>
+#include <hwloc/bitmap.h>
 #endif
 
+
 typedef struct MaskItem_ {
    Object super;
    char* text;
diff --git a/AvailableColumnsPanel.c b/AvailableColumnsPanel.c
index 32bb470e..feea5786 100644
--- a/AvailableColumnsPanel.c
+++ b/AvailableColumnsPanel.c
@@ -7,14 +7,17 @@ in the source distribution for its full text.
 
 #include "AvailableColumnsPanel.h"
 
-#include <assert.h>
 #include <ctype.h>
+#include <stdbool.h>
 #include <stdlib.h>
-#include <string.h>
 
 #include "ColumnsPanel.h"
-#include "Header.h"
+#include "FunctionBar.h"
+#include "ListItem.h"
+#include "Object.h"
 #include "Platform.h"
+#include "Process.h"
+#include "ProvideCurses.h"
 #include "XUtils.h"
 
 
diff --git a/AvailableMetersPanel.c b/AvailableMetersPanel.c
index faa69a8f..33006e94 100644
--- a/AvailableMetersPanel.c
+++ b/AvailableMetersPanel.c
@@ -6,17 +6,22 @@ in the source distribution for its full text.
 */
 
 #include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
 
 #include "CPUMeter.h"
+#include "FunctionBar.h"
 #include "Header.h"
 #include "ListItem.h"
+#include "Meter.h"
+#include "MetersPanel.h"
+#include "Object.h"
 #include "Platform.h"
+#include "ProvideCurses.h"
 #include "XUtils.h"
 
-#include <assert.h>
-#include <stdlib.h>
-
 
 static void AvailableMetersPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
diff --git a/AvailableMetersPanel.h b/AvailableMetersPanel.h
index f168869d..f7359365 100644
--- a/AvailableMetersPanel.h
+++ b/AvailableMetersPanel.h
@@ -7,6 +7,7 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "Header.h"
 #include "Panel.h"
 #include "ProcessList.h"
 #include "ScreenManager.h"
diff --git a/BatteryMeter.c b/BatteryMeter.c
index 22a63c7a..c91ae997 100644
--- a/BatteryMeter.c
+++ b/BatteryMeter.c
@@ -9,16 +9,13 @@ This meter written by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
 
 #include "BatteryMeter.h"
 
+#include <math.h>
+
 #include "Battery.h"
-#include "ProcessList.h"
 #include "CRT.h"
-#include "Platform.h"
+#include "Object.h"
 #include "XUtils.h"
 
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-
 
 static const int BatteryMeter_attributes[] = {
    BATTERY
diff --git a/CPUMeter.c b/CPUMeter.c
index 7e70f454..10635478 100644
--- a/CPUMeter.c
+++ b/CPUMeter.c
@@ -7,15 +7,18 @@ in the source distribution for its full text.
 
 #include "CPUMeter.h"
 
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include "CRT.h"
-#include "Settings.h"
+#include "Object.h"
 #include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "Settings.h"
 #include "XUtils.h"
 
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
 
 static const int CPUMeter_attributes[] = {
    CPU_NICE,
diff --git a/CRT.c b/CRT.c
index 2f9eb2b6..d3afd0ec 100644
--- a/CRT.c
+++ b/CRT.c
@@ -5,28 +5,26 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "config.h"
-#include "CRT.h"
+#include "config.h" // IWYU pragma: keep
 
-#include "RichString.h"
-#include "XUtils.h"
+#include "CRT.h"
 
-#include <stdio.h>
 #include <errno.h>
+#include <langinfo.h>
+#include <locale.h>
 #include <signal.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <locale.h>
-#include <langinfo.h>
 #include <unistd.h>
 
+#include "ProvideCurses.h"
+#include "XUtils.h"
+
 #ifdef HAVE_EXECINFO_H
 #include <execinfo.h>
 #endif
 
-#ifdef HAVE_SETUID_ENABLED
-#include <sys/types.h>
-#endif
 
 #define ColorIndex(i,j) ((7-(i))*8+(j))
 
diff --git a/CRT.h b/CRT.h
index fa2f6de7..83cb34e6 100644
--- a/CRT.h
+++ b/CRT.h
@@ -7,10 +7,14 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Macros.h"
+#include "config.h"
 
 #include <stdbool.h>
 
+#include "Macros.h"
+#include "ProvideCurses.h"
+
+
 typedef enum TreeStr_ {
    TREE_STR_HORZ,
    TREE_STR_VERT,
diff --git a/CategoriesPanel.c b/CategoriesPanel.c
index 8adf14f6..d6c25a69 100644
--- a/CategoriesPanel.c
+++ b/CategoriesPanel.c
@@ -7,15 +7,21 @@ in the source distribution for its full text.
 
 #include "CategoriesPanel.h"
 
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "AvailableColumnsPanel.h"
 #include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
-#include "DisplayOptionsPanel.h"
-#include "ColumnsPanel.h"
 #include "ColorsPanel.h"
-#include "AvailableColumnsPanel.h"
-
-#include <assert.h>
-#include <stdlib.h>
+#include "ColumnsPanel.h"
+#include "DisplayOptionsPanel.h"
+#include "FunctionBar.h"
+#include "ListItem.h"
+#include "MetersPanel.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
 
 
 static const char* const CategoriesFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
diff --git a/CategoriesPanel.h b/CategoriesPanel.h
index 1f17bd2e..0582c642 100644
--- a/CategoriesPanel.h
+++ b/CategoriesPanel.h
@@ -7,6 +7,7 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "Header.h"
 #include "Panel.h"
 #include "ProcessList.h"
 #include "ScreenManager.h"
diff --git a/CheckItem.c b/CheckItem.c
index d1f11963..5c79ab13 100644
--- a/CheckItem.c
+++ b/CheckItem.c
@@ -7,11 +7,12 @@ in the source distribution for its full text.
 
 #include "CheckItem.h"
 
-#include "CRT.h"
-
 #include <assert.h>
 #include <stdlib.h>
 
+#include "CRT.h"
+#include "RichString.h"
+
 
 static void CheckItem_delete(Object* cast) {
    CheckItem* this = (CheckItem*)cast;
diff --git a/CheckItem.h b/CheckItem.h
index b4300db4..a357111f 100644
--- a/CheckItem.h
+++ b/CheckItem.h
@@ -7,6 +7,8 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+
 #include "Object.h"
 
 typedef struct CheckItem_ {
diff --git a/ClockMeter.c b/ClockMeter.c
index 51fbed63..c6f2ab33 100644
--- a/ClockMeter.c
+++ b/ClockMeter.c
@@ -5,12 +5,15 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "ClockMeter.h"
+#include "config.h" // IWYU pragma: keep
 
-#include "CRT.h"
+#include "ClockMeter.h"
 
 #include <time.h>
 
+#include "CRT.h"
+#include "Object.h"
+
 
 static const int ClockMeter_attributes[] = {
    CLOCK
diff --git a/ColorsPanel.c b/ColorsPanel.c
index 5b189ea3..24e63b0e 100644
--- a/ColorsPanel.c
+++ b/ColorsPanel.c
@@ -7,13 +7,19 @@ in the source distribution for its full text.
 
 #include "ColorsPanel.h"