diff --git a/headers/private/kernel/realtime_sem.h b/headers/private/kernel/posix/realtime_sem.h
similarity index 100%
rename from headers/private/kernel/realtime_sem.h
rename to headers/private/kernel/posix/realtime_sem.h
diff --git a/src/system/kernel/Jamfile b/src/system/kernel/Jamfile
index af9f2a93cb..7c0f0c13e2 100644
--- a/src/system/kernel/Jamfile
+++ b/src/system/kernel/Jamfile
@@ -33,7 +33,6 @@ KernelMergeObject kernel_core.o :
 	Notifications.cpp
 	port.cpp
 	real_time_clock.c
-	realtime_sem.cpp
 	scheduler.cpp
 	sem.cpp
 	shutdown.c
@@ -64,16 +63,17 @@ KernelLd linkhack.so :
 ;
 
 KernelLd kernel_$(TARGET_ARCH) :
-	kernel_core.o
-	kernel_fs.o
-	kernel_vm.o
 	kernel_cache.o
+	kernel_core.o
+	kernel_debug.o
 	kernel_device_manager.o
 	kernel_disk_device_manager.o
-	kernel_util.o
+	kernel_fs.o
 	kernel_messaging.o
-	kernel_debug.o
+	kernel_posix.o
 	kernel_slab.o
+	kernel_util.o
+	kernel_vm.o
 
 	lib$(TARGET_ARCH).a
 	kernel_platform_$(TARGET_BOOT_PLATFORM).o
@@ -83,8 +83,8 @@ KernelLd kernel_$(TARGET_ARCH) :
 	# kernel parts borrowed from libroot and others
 	kernel_os_main.o
 	kernel_os_arch_$(TARGET_ARCH).o
-	kernel_posix.o
-	kernel_posix_arch_$(TARGET_ARCH).o
+	kernel_lib_posix.o
+	kernel_lib_posix_arch_$(TARGET_ARCH).o
 	kernel_misc.o
 
 	$(HAIKU_STATIC_LIBSUPC++)
@@ -96,16 +96,17 @@ KernelLd kernel_$(TARGET_ARCH) :
 ;
 
 KernelLd kernel.so :
-	kernel_core.o
-	kernel_fs.o
-	kernel_vm.o
 	kernel_cache.o
+	kernel_core.o
+	kernel_debug.o
 	kernel_device_manager.o
 	kernel_disk_device_manager.o
-	kernel_util.o
+	kernel_fs.o
 	kernel_messaging.o
-	kernel_debug.o
+	kernel_posix.o
 	kernel_slab.o
+	kernel_util.o
+	kernel_vm.o
 
 	lib$(TARGET_ARCH).a
 	kernel_platform_$(TARGET_BOOT_PLATFORM).o
@@ -115,8 +116,8 @@ KernelLd kernel.so :
 	# kernel libroot parts
 	kernel_os_main.o
 	kernel_os_arch_$(TARGET_ARCH).o
-	kernel_posix.o
-	kernel_posix_arch_$(TARGET_ARCH).o
+	kernel_lib_posix.o
+	kernel_lib_posix_arch_$(TARGET_ARCH).o
 
 	$(HAIKU_STATIC_LIBSUPC++)
 
@@ -153,6 +154,7 @@ SubInclude HAIKU_TOP src system kernel disk_device_manager ;
 SubInclude HAIKU_TOP src system kernel fs ;
 SubInclude HAIKU_TOP src system kernel lib ;
 SubInclude HAIKU_TOP src system kernel messaging ;
+SubInclude HAIKU_TOP src system kernel posix ;
 SubInclude HAIKU_TOP src system kernel slab ;
 SubInclude HAIKU_TOP src system kernel util ;
 SubInclude HAIKU_TOP src system kernel vm ;
diff --git a/src/system/kernel/lib/Jamfile b/src/system/kernel/lib/Jamfile
index b37f0ecd6b..2b46ff5e6a 100644
--- a/src/system/kernel/lib/Jamfile
+++ b/src/system/kernel/lib/Jamfile
@@ -31,7 +31,7 @@ SEARCH_SOURCE += [ FDirName $(posixSources) sys ] ;
 SEARCH_SOURCE += [ FDirName $(posixSources) time ] ;
 SEARCH_SOURCE += [ FDirName $(posixSources) unistd ] ;
 
-KernelMergeObject kernel_posix.o :
+KernelMergeObject kernel_lib_posix.o :
 	# main
  	kernel_errno.c
  	dirent.c
@@ -129,7 +129,7 @@ KernelMergeObject kernel_os_arch_$(TARGET_ARCH).o :
 SEARCH_SOURCE += [ FDirName $(posixSources) arch $(TARGET_ARCH) ] ;
 SEARCH_SOURCE += [ FDirName $(posixSources) string arch $(TARGET_ARCH) ] ;
 
-KernelMergeObject kernel_posix_arch_$(TARGET_ARCH).o :
+KernelMergeObject kernel_lib_posix_arch_$(TARGET_ARCH).o :
 	setjmp.S
 	siglongjmp.S
 	sigsetjmp.S
diff --git a/src/system/kernel/main.c b/src/system/kernel/main.c
index fcd9d9510e..8a573d0778 100644
--- a/src/system/kernel/main.c
+++ b/src/system/kernel/main.c
@@ -32,8 +32,8 @@
 #include <messaging.h>
 #include <Notifications.h>
 #include <port.h>
+#include <posix/realtime_sem.h>
 #include <real_time_clock.h>
-#include <realtime_sem.h>
 #include <sem.h>
 #include <smp.h>
 #include <system_info.h>
diff --git a/src/system/kernel/posix/Jamfile b/src/system/kernel/posix/Jamfile
new file mode 100644
index 0000000000..c649048a74
--- /dev/null
+++ b/src/system/kernel/posix/Jamfile
@@ -0,0 +1,9 @@
+SubDir HAIKU_TOP src system kernel posix ;
+
+UsePrivateHeaders shared ;
+
+KernelMergeObject kernel_posix.o : 
+	realtime_sem.cpp
+
+	: $(TARGET_KERNEL_PIC_CCFLAGS) -Wno-unused
+;
diff --git a/src/system/kernel/realtime_sem.cpp b/src/system/kernel/posix/realtime_sem.cpp
similarity index 99%
rename from src/system/kernel/realtime_sem.cpp
rename to src/system/kernel/posix/realtime_sem.cpp
index 51d6314230..75c23ecec8 100644
--- a/src/system/kernel/realtime_sem.cpp
+++ b/src/system/kernel/posix/realtime_sem.cpp
@@ -3,7 +3,7 @@
  * Distributed under the terms of the MIT License.
  */
 
-#include <realtime_sem.h>
+#include <posix/realtime_sem.h>
 
 #include <string.h>
 
diff --git a/src/system/kernel/syscalls.cpp b/src/system/kernel/syscalls.cpp
index 1fab5e86ff..e2652b182a 100644
--- a/src/system/kernel/syscalls.cpp
+++ b/src/system/kernel/syscalls.cpp
@@ -16,7 +16,7 @@
 #include <vfs.h>
 #include <vm.h>
 #include <thread.h>
-#include <realtime_sem.h>
+#include <posix/realtime_sem.h>
 #include <sem.h>
 #include <port.h>
 #include <cpu.h>
diff --git a/src/system/kernel/team.cpp b/src/system/kernel/team.cpp
index fcbccfc826..d02b5acc88 100644
--- a/src/system/kernel/team.cpp
+++ b/src/system/kernel/team.cpp
@@ -26,7 +26,7 @@
 #include <kscheduler.h>
 #include <ksignal.h>
 #include <port.h>
-#include <realtime_sem.h>
+#include <posix/realtime_sem.h>
 #include <sem.h>
 #include <syscall_process_info.h>
 #include <syscall_restart.h>
diff --git a/src/system/libroot/posix/semaphore.cpp b/src/system/libroot/posix/semaphore.cpp
index 40f0788ae4..1e0830acd0 100644
--- a/src/system/libroot/posix/semaphore.cpp
+++ b/src/system/libroot/posix/semaphore.cpp
@@ -13,7 +13,7 @@
 #include <OS.h>
 
 #include <AutoDeleter.h>
-#include <realtime_sem.h>
+#include <posix/realtime_sem.h>
 #include <syscall_utils.h>
 #include <syscalls.h>