diff --git a/src/libpsl-native/CMakeLists.txt b/src/libpsl-native/CMakeLists.txt
index ce0e198..b6f999d 100644
--- a/src/libpsl-native/CMakeLists.txt
+++ b/src/libpsl-native/CMakeLists.txt
@@ -5,7 +5,7 @@ project(PSL-NATIVE)
 set(CMAKE_BUILD_TYPE "Release")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Werror -fstack-protector-strong -fpie -D_FORTIFY_SOURCE=2")
 
-if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+if (${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR "FreeBSD")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,relro,-z,now")
 elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl")
diff --git a/src/libpsl-native/src/getcurrentthreadid.cpp b/src/libpsl-native/src/getcurrentthreadid.cpp
index 499589e..453635b 100644
--- a/src/libpsl-native/src/getcurrentthreadid.cpp
+++ b/src/libpsl-native/src/getcurrentthreadid.cpp
@@ -8,6 +8,10 @@
 #include <sys/syscall.h>
 #include <pthread.h>
 
+#if __FreeBSD__
+#include <pthread_np.h>
+#endif
+
 pid_t GetCurrentThreadId()
 {
     pid_t tid = 0;
@@ -17,6 +21,8 @@ pid_t GetCurrentThreadId()
     uint64_t tid64;
     pthread_threadid_np(NULL, &tid64);
     tid = (pid_t)tid64;
+#elif defined(__FreeBSD__)
+    tid = pthread_getthreadid_np();
 #endif
     return tid;
 }
diff --git a/src/libpsl-native/src/getppid.cpp b/src/libpsl-native/src/getppid.cpp
index a20bc90..d67e2df 100644
--- a/src/libpsl-native/src/getppid.cpp
+++ b/src/libpsl-native/src/getppid.cpp
@@ -13,6 +13,11 @@
 #include <sys/sysctl.h>
 #endif
 
+#if __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
 //! @brief GetPPid returns the parent process id for a process
 //!
 //! GetPPid
@@ -26,20 +31,20 @@
 //!
 pid_t GetPPid(pid_t pid)
 {
-
-#if defined(__APPLE__) && defined(__MACH__)
-
+#if defined (__APPLE__) && defined(__MACH__) || defined(__FreeBSD__)
     const pid_t PIDUnknown = UINT_MAX;
     struct kinfo_proc info;
     size_t length = sizeof(struct kinfo_proc);
-    int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, pid};
+    int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid };
     if (sysctl(mib, 4, &info, &length, NULL, 0) < 0)
         return PIDUnknown;
     if (length == 0)
         return PIDUnknown;
-
+#if defined (__APPLE__) && defined(__MACH__)
     return info.kp_eproc.e_ppid;
-
+#elif defined(__FreeBSD__)
+    return info.ki_ppid;
+#endif
 #else
 
     return UINT_MAX;
diff --git a/src/libpsl-native/src/getuserfrompid.cpp b/src/libpsl-native/src/getuserfrompid.cpp
index 63478a2..15d79a6 100644
--- a/src/libpsl-native/src/getuserfrompid.cpp
+++ b/src/libpsl-native/src/getuserfrompid.cpp
@@ -21,6 +21,7 @@
 
 #if __FreeBSD__
 #include <sys/user.h>
+#include <sys/sysctl.h>
 #endif
 
 char* GetUserFromPid(pid_t pid)
diff --git a/src/libpsl-native/test/test-getcommonlstat.cpp b/src/libpsl-native/test/test-getcommonlstat.cpp
index ad73e9a..d7206c1 100644
--- a/src/libpsl-native/test/test-getcommonlstat.cpp
+++ b/src/libpsl-native/test/test-getcommonlstat.cpp
@@ -39,7 +39,7 @@ TEST(GetCommonLStat, GetOwnerIdOfRoot)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %u /", "r");
 #else
      p = popen("/usr/bin/stat -c %u /", "r");
@@ -56,7 +56,7 @@ TEST(GetCommonLStat, GetGroupId)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %g /", "r");
 #else
      p = popen("/usr/bin/stat -c %g /", "r");
@@ -73,7 +73,7 @@ TEST(GetCommonLStat, GetInodeNumber)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %i /", "r");
 #else
      p = popen("/usr/bin/stat -c %i /", "r");
@@ -90,7 +90,7 @@ TEST(GetCommonLStat, GetSize)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %z /", "r");
 #else
      p = popen("/usr/bin/stat -c %s /", "r");
@@ -107,7 +107,7 @@ TEST(GetCommonLStat, GetBlockSize)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %k /", "r");
 #else
      p = popen("/usr/bin/stat -c %o /", "r");
@@ -124,7 +124,7 @@ TEST(GetCommonLStat, GetBlockCount)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %b /", "r");
 #else
      p = popen("/usr/bin/stat -c %b /", "r");
@@ -141,7 +141,7 @@ TEST(GetCommonLStat, GetLinkCount)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %l /", "r");
 #else
      p = popen("/usr/bin/stat -c %h /", "r");
@@ -158,7 +158,7 @@ TEST(GetCommonLStat, GetDeviceId)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %d /", "r");
 #else
      p = popen("/usr/bin/stat -c %d /", "r");
@@ -175,7 +175,7 @@ TEST(GetCommonLStat, GetATime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %a /", "r");
 #else
      p = popen("/usr/bin/stat -c %X /", "r");
@@ -192,7 +192,7 @@ TEST(GetCommonLStat, GetMTime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %m /", "r");
 #else
      p = popen("/usr/bin/stat -c %Y /", "r");
@@ -209,7 +209,7 @@ TEST(GetCommonLStat, GetCTime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %c /", "r");
 #else
      p = popen("/usr/bin/stat -c %Z /", "r");
diff --git a/src/libpsl-native/test/test-getcommonstat.cpp b/src/libpsl-native/test/test-getcommonstat.cpp
index 7407fc3..70279c9 100644
--- a/src/libpsl-native/test/test-getcommonstat.cpp
+++ b/src/libpsl-native/test/test-getcommonstat.cpp
@@ -41,7 +41,7 @@ TEST(GetCommonStat, GetOwnerIdOfRoot)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %u /", "r");
 #else
      p = popen("/usr/bin/stat -c %u /", "r");
@@ -58,7 +58,7 @@ TEST(GetCommonStat, GetGroupId)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %g /", "r");
 #else
      p = popen("/usr/bin/stat -c %g /", "r");
@@ -75,7 +75,7 @@ TEST(GetCommonStat, GetInodeNumber)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %i /", "r");
 #else
      p = popen("/usr/bin/stat -c %i /", "r");
@@ -93,7 +93,7 @@ TEST(GetCommonStat, GetMode)
     FILE *p;
     CommonStat cs;
     unsigned int mode = -1;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
     p = popen("/usr/bin/stat -f %p /", "r");
     int result = fscanf(p, "%o", &mode);
 #else
@@ -110,7 +110,7 @@ TEST(GetCommonStat, GetSize)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %z /", "r");
 #else
      p = popen("/usr/bin/stat -c %s /", "r");
@@ -127,7 +127,7 @@ TEST(GetCommonStat, GetBlockSize)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %k /", "r");
 #else
      p = popen("/usr/bin/stat -c %o /", "r");
@@ -144,7 +144,7 @@ TEST(GetCommonStat, GetBlockCount)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %b /", "r");
 #else
      p = popen("/usr/bin/stat -c %b /", "r");
@@ -161,7 +161,7 @@ TEST(GetCommonStat, GetLinkCount)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %l /", "r");
 #else
      p = popen("/usr/bin/stat -c %h /", "r");
@@ -178,7 +178,7 @@ TEST(GetCommonStat, GetDeviceId)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %d /", "r");
 #else
      p = popen("/usr/bin/stat -c %d /", "r");
@@ -195,7 +195,7 @@ TEST(GetCommonStat, GetATime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %a /", "r");
 #else
      p = popen("/usr/bin/stat -c %X /", "r");
@@ -212,7 +212,7 @@ TEST(GetCommonStat, GetMTime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %m /", "r");
 #else
      p = popen("/usr/bin/stat -c %Y /", "r");
@@ -229,7 +229,7 @@ TEST(GetCommonStat, GetCTime)
 {
     FILE *p;
     CommonStat cs;
-#if defined (__APPLE__)
+#if defined (__APPLE__) || defined(__FreeBSD__)
      p = popen("/usr/bin/stat -f %c /", "r");
 #else
      p = popen("/usr/bin/stat -c %Z /", "r");