diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 87ab9aa5..537b27ae 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -168,12 +168,14 @@ if(UNIX) # APPLE, LINUX, FREE_BSD
         # Daemon & client
         file(GLOB DAEMON_SOURCES "daemon/*.cpp")
         add_executable(daemon ${DAEMON_SOURCES})
+        target_include_directories(daemon PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
         target_link_libraries(daemon PRIVATE PCM_STATIC Threads::Threads)
         set_target_properties(daemon PROPERTIES OUTPUT_NAME "pcm-daemon")
         install(TARGETS daemon DESTINATION ${CMAKE_INSTALL_SBINDIR})
 
         file(GLOB CLIENT_SOURCES "client/*.cpp")
         add_executable(client ${CLIENT_SOURCES})
+        target_include_directories(client PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
         target_link_libraries(client PRIVATE Threads::Threads)
         set_target_properties(client PROPERTIES OUTPUT_NAME "pcm-client")
         install(TARGETS client DESTINATION ${CMAKE_INSTALL_BINDIR})
diff --git a/src/bw.cpp b/src/bw.cpp
index 09779df1..87508b25 100644
--- a/src/bw.cpp
+++ b/src/bw.cpp
@@ -5,6 +5,8 @@
 //
 
 #include <iostream>
+#include <exception>
+#include "mmio.h"
 #include "bw.h"
 #include "pci.h"
 #include "utils.h"
@@ -179,4 +181,4 @@ uint64 ServerBW::getPMMWrites()
     return result;
 }
 
-} // namespace pcm
\ No newline at end of file
+} // namespace pcm
diff --git a/src/bw.h b/src/bw.h
index 79dfaad6..36d28ec5 100644
--- a/src/bw.h
+++ b/src/bw.h
@@ -13,7 +13,12 @@
 #include <memory>
 #include <vector>
 #include <array>
-#include "mmio.h"
+#include <stddef.h>
+#include "types.h"
+
+namespace pcm {
+  class MMIORange;
+}
 
 namespace pcm {
 
@@ -70,4 +75,4 @@ class ServerBW
     uint64 getPMMWrites();
 };
 
-} // namespace pcm
\ No newline at end of file
+} // namespace pcm
diff --git a/src/client/client.cpp b/src/client/client.cpp
index cff9ac67..d49bc38e 100644
--- a/src/client/client.cpp
+++ b/src/client/client.cpp
@@ -2,19 +2,15 @@
 // Copyright (c) 2009-2017, Intel Corporation
 // written by Steven Briscoe
 
-#include <cstdlib>
 #include <iostream>
 #include <unistd.h>
-#include <sys/types.h>
-#include <sys/ipc.h>
 #include <sys/shm.h>
 #include <errno.h>
-#include <sstream>
-#include <exception>
 #include <stdexcept>
-#include <grp.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <sstream>
 
 #include "../daemon/common.h"
 #include "client.h"
diff --git a/src/client/client.h b/src/client/client.h
index 89b7220d..c387141e 100644
--- a/src/client/client.h
+++ b/src/client/client.h
@@ -2,16 +2,12 @@
 // Copyright (c) 2009-2017, Intel Corporation
 // written by Steven Briscoe
 
-#include <sys/types.h>
 #include <string>
-#include <grp.h>
-
+#include "../daemon/common.h"
 
 #ifndef CLIENT_H_
 #define CLIENT_H_
 
-#include "../daemon/common.h"
-
 namespace PCMDaemon {
 
 	class Client {
diff --git a/src/client/main.cpp b/src/client/main.cpp
index 01e49b73..05d1a4d8 100644
--- a/src/client/main.cpp
+++ b/src/client/main.cpp
@@ -7,6 +7,8 @@
 #include <iostream>
 #include <iomanip>
 #include <cstdlib>
+#include <string>
+#include "daemon/common.h"
 
 #include "client.h"
 
diff --git a/src/cpucounters.cpp b/src/cpucounters.cpp
index 806b0116..c576dc81 100644
--- a/src/cpucounters.cpp
+++ b/src/cpucounters.cpp
@@ -46,7 +46,9 @@
 #include "winring0/OlsApiInit.h"
 #include "windows/windriver.h"
 #else
+#include <sched.h>
 #include <pthread.h>
+#include <unistd.h>
 #if defined(__FreeBSD__) || (defined(__DragonFly__) && __DragonFly_version >= 400707)
 #include <pthread_np.h>
 #include <sys/_cpuset.h>
@@ -58,20 +60,37 @@
 #include <sys/mman.h>
 #include <dirent.h>
 #include <sys/resource.h>
+#include <bits/strings_fortified.h>
+
+#ifdef PCM_USE_PERF
+#include <linux/perf_event.h>
+#include <syscall.h>
+#endif
+
 #endif
 #endif
 
 #include <string.h>
-#include <limits>
 #include <map>
 #include <algorithm>
 #include <thread>
 #include <future>
-#include <functional>
 #include <queue>
 #include <condition_variable>
 #include <mutex>
 #include <atomic>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <cstdlib>
+#include <fstream>
+#include <initializer_list>
+#include <iomanip>
+#include <stdexcept>
+#include <system_error>
+#include "bw.h"
+#include "exceptions/unsupported_processor_exception.hpp"
+#include "mutex.h"
+#include "width_extender.h"
 
 #ifdef __APPLE__
 #include <sys/types.h>
diff --git a/src/cpucounters.h b/src/cpucounters.h
index 25ead6e8..85d862cf 100644
--- a/src/cpucounters.h
+++ b/src/cpucounters.h
@@ -26,13 +26,9 @@
 #include "topologyentry.h"
 #include "msr.h"
 #include "pci.h"
-#include "bw.h"
-#include "width_extender.h"
-#include "exceptions/unsupported_processor_exception.hpp"
 
 #include <vector>
 #include <array>
-#include <limits>
 #include <string>
 #include <memory>
 #include <map>
@@ -40,22 +36,19 @@
 #include <string.h>
 #include <assert.h>
 
+#include <algorithm>
+#include <exception>
+#include <iostream>
+#include <type_traits>
+#include <utility>
+#include "mmio.h"
+#include "utils.h"
+#include "width_extender.h"
+
 #ifdef PCM_USE_PERF
-#include <linux/perf_event.h>
-#include <errno.h>
 #define PCM_PERF_COUNT_HW_REF_CPU_CYCLES (9)
 #endif
 
-#ifndef _MSC_VER
-#define NOMINMAX
-#include <semaphore.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-#endif
-
 #ifdef _MSC_VER
 #if _MSC_VER>= 1600
 #include <intrin.h>
@@ -66,20 +59,24 @@
 #include "resctrl.h"
 #endif
 
+namespace pcm {
+  class FreeRunningBWCounters;
+  class ServerBW;
+  class SystemCounterState;
+  class SocketCounterState;
+  class CoreCounterState;
+  class ServerUncoreCounterState;
+  class PCM;
+  class CoreTaskQueue;
+  class SystemRoot;
+}
+
 namespace pcm {
 
 #ifdef _MSC_VER
 void PCM_API restrictDriverAccess(LPCTSTR path);
 #endif
 
-class SystemCounterState;
-class SocketCounterState;
-class CoreCounterState;
-class BasicCounterState;
-class ServerUncoreCounterState;
-class PCM;
-class CoreTaskQueue;
-class SystemRoot;
 
 /*
         CPU performance monitoring routines
@@ -503,8 +500,6 @@ typedef SimpleCounterState PCIeCounterState;
 typedef SimpleCounterState IIOCounterState;
 typedef std::vector<uint64> eventGroup_t;
 
-class PerfVirtualControlRegister;
-
 /*!
         \brief CPU Performance Monitor
 
diff --git a/src/daemon/daemon.cpp b/src/daemon/daemon.cpp
index 4f8395e3..96b923d7 100644
--- a/src/daemon/daemon.cpp
+++ b/src/daemon/daemon.cpp
@@ -4,7 +4,6 @@
 
 #include <cstdlib>
 #include <iostream>
-#include <cstring>
 #include <algorithm>
 #include <unistd.h>
 #include <sys/types.h>
@@ -12,6 +11,20 @@
 #include <sys/shm.h>
 #include <errno.h>
 #include <time.h>
+#include <bits/getopt_core.h>
+#include <bits/types/struct_tm.h>
+#include <ctype.h>
+#include <grp.h>
+#include <stdio.h>
+#include <memory>
+#include <new>
+#include <utility>
+#include "types.h"
+#include "utils.h"
+
+#ifdef __linux__
+#include <ext/alloc_traits.h>
+#endif
 
 #ifndef CLOCK_MONOTONIC_RAW
 #define CLOCK_MONOTONIC_RAW             (4) /* needed for SLES11 */
@@ -19,7 +32,7 @@
 
 #include "daemon.h"
 #include "common.h"
-#include "pcm.h"
+#include "exceptions/unsupported_processor_exception.hpp"
 
 namespace PCMDaemon {
 
diff --git a/src/daemon/daemon.h b/src/daemon/daemon.h
index 3718282b..129c51c2 100644
--- a/src/daemon/daemon.h
+++ b/src/daemon/daemon.h
@@ -8,10 +8,12 @@
 #include <sys/types.h>
 #include <map>
 #include <string>
-#include <grp.h>
 
 #include "common.h"
-#include "pcm.h"
+#include <vector>
+#include "cpucounters.h"
+
+using namespace pcm;
 
 namespace PCMDaemon {
 
diff --git a/src/dashboard.cpp b/src/dashboard.cpp
index fe4fc5e1..ba839291 100644
--- a/src/dashboard.cpp
+++ b/src/dashboard.cpp
@@ -4,6 +4,8 @@
 #include <vector>
 #include <memory>
 #include <unistd.h>
+#include <initializer_list>
+#include <mutex>
 #include "cpucounters.h"
 #include "dashboard.h"
 
diff --git a/src/mmio.cpp b/src/mmio.cpp
index 6ffd2f36..a8575605 100644
--- a/src/mmio.cpp
+++ b/src/mmio.cpp
@@ -6,12 +6,8 @@
 
 #include <iostream>
 #include <string.h>
-#ifndef _MSC_VER
-#include <sys/types.h>
-#endif
-#include <sys/stat.h>
+#include <exception>
 #include <fcntl.h>
-#include "pci.h"
 #include "mmio.h"
 
 #ifndef _MSC_VER
@@ -22,10 +18,10 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "utils.h"
+#else
+#include <unistd.h>
 #endif
 
-#include <assert.h>
-
 namespace pcm {
 
 #ifdef _MSC_VER
diff --git a/src/mmio.h b/src/mmio.h
index a71e028c..9e0ab359 100644
--- a/src/mmio.h
+++ b/src/mmio.h
@@ -17,12 +17,8 @@
 #include "windows.h"
 #include "winpmem\winpmem.h"
 #include "Winmsrdriver\msrstruct.h"
-#else
-#include <unistd.h>
-#endif
-
 #include "mutex.h"
-#include <memory>
+#endif
 
 namespace pcm {
 
@@ -152,4 +148,4 @@ class MMIORange
 };
 #endif
 
-} // namespace pcm
\ No newline at end of file
+} // namespace pcm
diff --git a/src/msr.cpp b/src/msr.cpp
index 218863a8..c846beba 100644
--- a/src/msr.cpp
+++ b/src/msr.cpp
@@ -4,9 +4,7 @@
 //            Austen Ott
 //            Jim Harris (FreeBSD)
 
-#include <sys/types.h>
 #include <stdio.h>
-#include <sys/stat.h>
 #include <fcntl.h>
 #ifndef _MSC_VER
 #include <unistd.h>
@@ -14,7 +12,12 @@
 #include "types.h"
 #include "msr.h"
 #include "utils.h"
-#include <assert.h>
+
+#include <errno.h>
+#include <string.h>
+#include <exception>
+#include <iostream>
+#include <string>
 
 #ifdef _MSC_VER
 
@@ -30,8 +33,6 @@
 #include <sys/cpuctl.h>
 #endif
 
-#include <mutex>
-
 namespace pcm {
 
 #ifdef _MSC_VER
diff --git a/src/msr.h b/src/msr.h
index d938d20c..4af522e8 100644
--- a/src/msr.h
+++ b/src/msr.h
@@ -13,6 +13,7 @@
 */
 
 #include "types.h"
+#include <stdexcept>
 
 #ifdef _MSC_VER
 #include "windows.h"
diff --git a/src/pci.cpp b/src/pci.cpp
index d8977c3f..dde26a6f 100644
--- a/src/pci.cpp
+++ b/src/pci.cpp
@@ -8,15 +8,18 @@
 #include <iostream>
 #include <stdexcept>
 #include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <fcntl.h>
+#include <exception>
+#include <iomanip>
+#include <memory>
+#include <string>
+
 #include "pci.h"
 
 #ifndef _MSC_VER
 #include <sys/mman.h>
 #include <errno.h>
-#include <strings.h>
+#include <unistd.h>
 #endif
 
 #ifdef _MSC_VER
diff --git a/src/pci.h b/src/pci.h
index ea9599ee..76f8bca5 100644
--- a/src/pci.h
+++ b/src/pci.h
@@ -17,8 +17,6 @@
 
 #ifdef _MSC_VER
 #include "windows.h"
-#else
-#include <unistd.h>
 #endif
 
 #ifdef __APPLE__
diff --git a/src/pcm-core.cpp b/src/pcm-core.cpp
index 1aab41f5..b0495034 100644
--- a/src/pcm-core.cpp
+++ b/src/pcm-core.cpp
@@ -11,21 +11,19 @@
 #define strtok_r strtok_s
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
 #endif
-#include <math.h>
 #include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <string>
-#include <assert.h>
 #include <bitset>
 #include "cpucounters.h"
 #include "utils.h"
+#include <stdint.h>
+#include <utility>
+#include "types.h"
+
 #ifdef _MSC_VER
 #include "freegetopt/getopt.h"
 #endif
diff --git a/src/pcm-iio.cpp b/src/pcm-iio.cpp
index 7a34d16e..e847d99d 100644
--- a/src/pcm-iio.cpp
+++ b/src/pcm-iio.cpp
@@ -8,11 +8,8 @@
 #pragma warning(disable : 4996) // for sprintf
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
 #include <memory>
-#include <fstream>
 #include <stdlib.h>
 #include <stdexcept>      // std::length_error
 #include <cstdint>
@@ -22,6 +19,18 @@
 #include "freegetopt/getopt.h"
 #endif
 
+#include <cstdio>
+#include <iomanip>
+#include <iostream>
+#include <iterator>
+#include <limits>
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+#include "pci.h"
+#include "types.h"
+#include "version.h"
 #include "lspci.h"
 #include "utils.h"
 using namespace std;
diff --git a/src/pcm-latency.cpp b/src/pcm-latency.cpp
index 95ce3b1f..d2010f14 100644
--- a/src/pcm-latency.cpp
+++ b/src/pcm-latency.cpp
@@ -7,22 +7,23 @@
 #pragma warning(disable : 4996) // for sprintf
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
-#include <fstream>
 #include <stdlib.h>
 #include <cstdint>
-#include <numeric>
-#include <bitset>
-#include <algorithm>
-#include <string.h>
 #ifdef _MSC_VER
 #include "freegetopt/getopt.h"
 #endif
 
-#include "lspci.h"
 #include "utils.h"
+#include <iomanip>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+#include "types.h"
+#include "version.h"
+
 using namespace std;
 using namespace pcm;
 
diff --git a/src/pcm-lspci.cpp b/src/pcm-lspci.cpp
index 591f5f3e..9b02e28b 100644
--- a/src/pcm-lspci.cpp
+++ b/src/pcm-lspci.cpp
@@ -7,8 +7,6 @@
 #pragma warning(disable : 4996) // for sprintf
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
 #include <iostream>
 #include <stdlib.h>
@@ -17,6 +15,9 @@
 #include "freegetopt/getopt.h"
 #endif
 
+#include <vector>
+#include "pci.h"
+#include "types.h"
 #include "lspci.h"
 using namespace std;
 using namespace pcm;
diff --git a/src/pcm-memory.cpp b/src/pcm-memory.cpp
index 165bee0b..a18fed98 100644
--- a/src/pcm-memory.cpp
+++ b/src/pcm-memory.cpp
@@ -11,20 +11,18 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
 #endif
-#include <math.h>
 #include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <string>
-#include <assert.h>
 #include "cpucounters.h"
 #include "utils.h"
+#include <algorithm>
+#include <utility>
+#include "types.h"
+#include "version.h"
 
 #define PCM_DELAY_DEFAULT 1.0 // in seconds
 #define PCM_DELAY_MIN 0.015 // 15 milliseconds is practical on most modern CPUs
diff --git a/src/pcm-mmio.cpp b/src/pcm-mmio.cpp
index 77c22d01..c7f9a7ea 100644
--- a/src/pcm-mmio.cpp
+++ b/src/pcm-mmio.cpp
@@ -2,21 +2,23 @@
 // Copyright (c) 2012-2020, Intel Corporation
 
 // written by Roman Dementiev
-#include "cpucounters.h"
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
 #include <iostream>
 #include <functional>
-#include <stdlib.h>
-#include <iomanip>
-#include <string.h>
 #ifdef _MSC_VER
 #include "freegetopt/getopt.h"
 #endif
+#ifdef __linux__
+#include <bits/getopt_core.h>
+#endif
+#include <exception>
+#include "mmio.h"
+#include "types.h"
+#include "utils.h"
+#include "version.h"
 
 using namespace pcm;
 
diff --git a/src/pcm-msr.cpp b/src/pcm-msr.cpp
index 20039a9a..d85d1989 100644
--- a/src/pcm-msr.cpp
+++ b/src/pcm-msr.cpp
@@ -6,13 +6,18 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
 #include <iostream>
-#include <stdlib.h>
-#include <iomanip>
-#include <string.h>
+
+#ifdef __linux__
+#include <bits/getopt_core.h>
+#endif
+#include <exception>
+#include "msr.h"
+#include "types.h"
+#include "utils.h"
+#include "version.h"
+
 #ifdef _MSC_VER
 #include "freegetopt/getopt.h"
 #endif
diff --git a/src/pcm-numa.cpp b/src/pcm-numa.cpp
index 77dc40df..f438aa2f 100644
--- a/src/pcm-numa.cpp
+++ b/src/pcm-numa.cpp
@@ -10,23 +10,22 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
+#include "freegetopt/getopt.h"
 #endif
-#include <math.h>
 #include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <string>
-#include <assert.h>
 #include "cpucounters.h"
 #include "utils.h"
-#ifdef _MSC_VER
-#include "freegetopt/getopt.h"
-#endif
+#include <memory>
+#include <string>
+#include <vector>
+#include "types.h"
+#include "version.h"
+#include <utility>
+#include "exceptions/unsupported_processor_exception.hpp"
 
 #include <vector>
 #define PCM_DELAY_DEFAULT 1.0       // in seconds
diff --git a/src/pcm-pcicfg.cpp b/src/pcm-pcicfg.cpp
index 404d1373..40a3197f 100644
--- a/src/pcm-pcicfg.cpp
+++ b/src/pcm-pcicfg.cpp
@@ -2,20 +2,22 @@
 // Copyright (c) 2012, 2018 Intel Corporation
 
 // written by Roman Dementiev
-#include "cpucounters.h"
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
 #endif
 #include <iostream>
-#include <stdlib.h>
-#include <iomanip>
-#include <string.h>
 #ifdef _MSC_VER
 #include "freegetopt/getopt.h"
 #endif
+#ifdef __linux__
+#include <bits/getopt_core.h>
+#endif
+#include <exception>
+#include "pci.h"
+#include "types.h"
+#include "utils.h"
+#include "version.h"
 
 using namespace pcm;
 
diff --git a/src/pcm-pcie.cpp b/src/pcm-pcie.cpp
index 90e06267..48a138df 100644
--- a/src/pcm-pcie.cpp
+++ b/src/pcm-pcie.cpp
@@ -10,17 +10,10 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
 #endif
-#include <math.h>
-#include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
-#include <string.h>
 #include <string>
-#include <assert.h>
 #include "pcm-pcie.h"
 
 #define PCM_DELAY_DEFAULT 1.0 // in seconds
diff --git a/src/pcm-pcie.h b/src/pcm-pcie.h
index 91930c0f..4c4f0f93 100644
--- a/src/pcm-pcie.h
+++ b/src/pcm-pcie.h
@@ -11,6 +11,12 @@
 #include <string>
 #include <initializer_list>
 #include <algorithm>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <iomanip>
+#include <memory>
+#include "types.h"
 
 #if defined(_MSC_VER)
 typedef unsigned int uint;
diff --git a/src/pcm-power.cpp b/src/pcm-power.cpp
index 6f8177a8..04980845 100644
--- a/src/pcm-power.cpp
+++ b/src/pcm-power.cpp
@@ -8,10 +8,6 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
 #endif
 #include <iostream>
 #include <stdlib.h>
@@ -20,6 +16,20 @@
 #include "freegetopt/getopt.h"
 #endif
 #include "utils.h"
+#include <stdint.h>
+#include <utility>
+#include "types.h"
+#include <assert.h>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+#include "types.h"
+#include "version.h"
+
+#ifdef __linux__
+#include <ext/alloc_traits.h>
+#endif
 
 #define PCM_DELAY_DEFAULT 1.0       // in seconds
 #define PCM_DELAY_MIN 0.015         // 15 milliseconds is practical on most modern CPUs
diff --git a/src/pcm-raw.cpp b/src/pcm-raw.cpp
index 97fce9e1..96801e60 100644
--- a/src/pcm-raw.cpp
+++ b/src/pcm-raw.cpp
@@ -9,33 +9,39 @@
 #define strtok_r strtok_s
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
+#include "freegetopt/getopt.h"
 #endif
-#include <math.h>
-#include <iomanip>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <string>
+
 #include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <algorithm>
+#include <array>
 #include <bitset>
+#include <cctype>
+#include <exception>
+#include <iomanip>
+#include <iostream>
+#include <locale>
+#include <map>
+#include <memory>
 #include <regex>
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+#include <string>
 #include <unordered_map>
+#include <utility>
+#include <vector>
 #include "cpucounters.h"
+#include "types.h"
 #include "utils.h"
 
 #if PCM_SIMDJSON_AVAILABLE
 #include "simdjson.h"
 #endif
 
-#ifdef _MSC_VER
-#include "freegetopt/getopt.h"
-#endif
-
-#include <vector>
 #define PCM_DELAY_MIN 0.015 // 15 milliseconds is practical on most modern CPUs
 #define MAX_CORES 4096
 
diff --git a/src/pcm-sensor-server.cpp b/src/pcm-sensor-server.cpp
index c9523083..f03fac7a 100644
--- a/src/pcm-sensor-server.cpp
+++ b/src/pcm-sensor-server.cpp
@@ -6,27 +6,48 @@
 constexpr unsigned int DEFAULT_HTTP_PORT = 9738;
 constexpr unsigned int DEFAULT_HTTPS_PORT = DEFAULT_HTTP_PORT;
 
-#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <signal.h>
-#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <sched.h>
 
 #include <cstring>
-#include <fstream>
 #include <ctime>
 #include <vector>
 #include <unordered_map>
+#include <fstream>
 
 #include "cpucounters.h"
 #include "debug.h"
 #include "topology.h"
 #include "dashboard.h"
+#include <assert.h>
+#include <bits/types/struct_sched_param.h>
+#include <bits/types/struct_tm.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <atomic>
+#include <exception>
+#include <functional>
+#include <iomanip>
+#include <iostream>
+#include <limits>
+#include <locale>
+#include <memory>
+#include <mutex>
+#include <stdexcept>
+#include <string>
+#include <thread>
+#include <type_traits>
+#include <utility>
+#include "types.h"
+#include "utils.h"
 
 #define PCMWebServerVersion "0.1"
 #if defined (USE_SSL)
diff --git a/src/pcm-sensor.cpp b/src/pcm-sensor.cpp
index 2e3a25b3..82013788 100644
--- a/src/pcm-sensor.cpp
+++ b/src/pcm-sensor.cpp
@@ -14,9 +14,11 @@
 */
 #include <iostream>
 #include <string>
-#include <sstream>
 #include "cpuasynchcounter.h"
 #include "utils.h"
+#include "cpucounters.h"
+#include "types.h"
+#include "version.h"
 
 using namespace std;
 using namespace pcm;
diff --git a/src/pcm-tsx.cpp b/src/pcm-tsx.cpp
index ecd7ebfd..c5cd37db 100644
--- a/src/pcm-tsx.cpp
+++ b/src/pcm-tsx.cpp
@@ -10,18 +10,12 @@
 #ifdef _MSC_VER
 #include <windows.h>
 #include "windows/windriver.h"
-#else
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h> // for gettimeofday()
 #endif
-#include <math.h>
 #include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <string>
-#include <assert.h>
 #include "cpucounters.h"
 #include "utils.h"
 #ifdef _MSC_VER
@@ -29,6 +23,10 @@
 #endif
 
 #include <vector>
+#include <memory>
+#include <utility>
+#include "types.h"
+
 #define PCM_DELAY_DEFAULT 1.0       // in seconds
 #define PCM_DELAY_MIN 0.015         // 15 milliseconds is practical on most modern CPUs
 
diff --git a/src/pcm.cpp b/src/pcm.cpp
index 42433e94..79558b59 100644
--- a/src/pcm.cpp
+++ b/src/pcm.cpp
@@ -14,20 +14,22 @@
 #include "windows/windriver.h"
 #else
 #include <unistd.h>
-#include <signal.h>   // for atexit()
-#include <sys/time.h> // for gettimeofday()
 #endif
-#include <math.h>
 #include <iomanip>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <cstring>
 #include <sstream>
-#include <assert.h>
 #include <bitset>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
 #include "cpucounters.h"
 #include "utils.h"
+#include "types.h"
+#include "version.h"
 
 #define SIZE (10000000)
 #define PCM_DELAY_DEFAULT 1.0 // in seconds
diff --git a/src/resctrl.cpp b/src/resctrl.cpp
index d52d99aa..56ac05e2 100644
--- a/src/resctrl.cpp
+++ b/src/resctrl.cpp
@@ -7,10 +7,18 @@
 #include "resctrl.h"
 #include "cpucounters.h"
 #include <sys/stat.h>
-#include <sys/types.h>
 #include <string>
 #include <iostream>
-#include <cstdlib>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <iomanip>
+#include <mutex>
+#include <sstream>
+#include <utility>
+#include "types.h"
+#include "utils.h"
 
 namespace pcm
 {
diff --git a/src/resctrl.h b/src/resctrl.h
index e389a568..50b3d926 100644
--- a/src/resctrl.h
+++ b/src/resctrl.h
@@ -10,17 +10,18 @@
 
 #ifdef __linux__
 
-#include <stdlib.h>
 #include <stdio.h>
 #include <unordered_map>
 #include <vector>
-#include <mutex>
-#include <memory>
+#include <string>
 
 namespace pcm
 {
     class PCM;
+}
 
+namespace pcm
+{
     class Resctrl
     {
         PCM & pcm;
diff --git a/src/threadpool.h b/src/threadpool.h
index 224c9e86..3b204d9e 100644
--- a/src/threadpool.h
+++ b/src/threadpool.h
@@ -11,6 +11,9 @@
 #include <mutex>
 #include <condition_variable>
 #include <queue>
+#include <stddef.h>
+#include <memory>
+#include <vector>
 
 namespace pcm {
 
@@ -42,8 +45,6 @@ class LambdaJob : public Work {
     std::packaged_task<ReturnType()> task_;
 };
 
-class WorkQueue;
-
 class ThreadPool {
 private:
     ThreadPool( const int n ) {
diff --git a/src/topology.cpp b/src/topology.cpp
index 3993efeb..cb309e44 100644
--- a/src/topology.cpp
+++ b/src/topology.cpp
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause
 // Copyright (c) 2016-2020, Intel Corporation
 
+#include <utility>
 #include "cpucounters.h"
 #include "topology.h"
 
@@ -99,4 +100,4 @@ Aggregator::Aggregator()
     ucsFutures_.resize( pcm->getNumSockets() );
 }
 
-}// namespace pcm
\ No newline at end of file
+}// namespace pcm
diff --git a/src/topology.h b/src/topology.h
index 1864770e..36e201e3 100644
--- a/src/topology.h
+++ b/src/topology.h
@@ -11,18 +11,28 @@
 #include "types.h"
 #include "cpucounters.h"
 #include "threadpool.h"
+#include <stddef.h>
+#include <chrono>
+#include <iomanip>
+#include <memory>
+#include <ostream>
+#include <stdexcept>
+#include "debug.h"
 
+// all can be done with forwards, anything hat actually uses PCM should be put in the topology.cpp file
 namespace pcm {
+    class SafeMsrHandle;
+    class PCM;
+    class SystemRoot;
+    class Socket;
+    class Core;
+    class HyperThread;
+    class ServerUncore;
+    class ClientUncore;
 
-// all can be done with forwards, anything hat actually uses PCM should be put in the topology.cpp file
-class PCM;
-
-class SystemRoot;
-class Socket;
-class Core;
-class HyperThread;
-class ServerUncore;
-class ClientUncore;
+}
+
+namespace pcm {
 
 class Visitor {
 public:
diff --git a/src/utils.cpp b/src/utils.cpp
index 329cbe23..1284f32c 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -3,7 +3,6 @@
 // written by Andrey Semin and many others
 
 #include <iostream>
-#include <cassert>
 #include <climits>
 #ifdef _MSC_VER
 #include <process.h>
@@ -11,7 +10,16 @@
 #else
 #include <sys/wait.h> // for waitpid()
 #include <unistd.h> // for ::sleep
+#include <sched.h>
 #endif
+
+
+#include <errno.h>
+#include <csignal>
+#include <cstdlib>
+#include <cstring>
+#include <fstream>
+
 #include "utils.h"
 #include "cpucounters.h"
 
diff --git a/src/utils.h b/src/utils.h
index bb2ac728..5f7c4a40 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -10,23 +10,34 @@
 #pragma once
 
 #include <cstdio>
-#include <cstring>
-#include <fstream>
-#include <time.h>
 #include "types.h"
 #include <vector>
 #include <chrono>
 #include <math.h>
 #include <assert.h>
+#include <stdlib.h>
+#include <initializer_list>
+#include <iomanip>
+#include <iostream>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#ifdef __linux__
+#include <bits/types/struct_tm.h>
+#endif
 
 #ifndef _MSC_VER
-#include <csignal>
 #include <ctime>
-#include <cmath>
+#include <unistd.h>
 #else
 #include <intrin.h>
 #endif
 
+namespace pcm {
+  class PCM;
+}
+
 namespace pcm {
 
 #ifdef _MSC_VER
@@ -313,7 +324,6 @@ inline void printDateForJson(const std::string& separator, const std::string &js
 
 std::vector<std::string> split(const std::string & str, const char delim);
 
-class PCM;
 bool CheckAndForceRTMAbortMode(const char * argv, PCM * m);
 
 void print_help_force_rtm_abort_mode(const int alignment);
diff --git a/tests/urltest.cpp b/tests/urltest.cpp
index fb843d99..f4b80fd6 100644
--- a/tests/urltest.cpp
+++ b/tests/urltest.cpp
@@ -1,6 +1,10 @@
 #define UNIT_TEST 1
 
 #include "../src/pcm-sensor-server.cpp"
+#include <iostream>
+#include <stdexcept>
+#include <string>
+#include <vector>
 
 #undef UNIT_TEST