diff --git a/cmake/LibraryNaming.cmake b/cmake/LibraryNaming.cmake
index 724349bd..d71919fa 100644
--- a/cmake/LibraryNaming.cmake
+++ b/cmake/LibraryNaming.cmake
@@ -54,7 +54,6 @@ check_group_build_target(XASH_SERENITY XASH_PLATFORM)
 check_group_build_target(XASH_IRIX XASH_PLATFORM)
 check_group_build_target(XASH_NSWITCH XASH_PLATFORM)
 check_group_build_target(XASH_PSVITA XASH_PLATFORM)
-check_group_build_target(XASH_LINUX_UNKNOWN XASH_PLATFORM)
 check_group_build_target(XASH_X86 XASH_ARCHITECTURE)
 check_group_build_target(XASH_AMD64 XASH_ARCHITECTURE)
 check_group_build_target(XASH_ARM XASH_ARCHITECTURE)
@@ -84,8 +83,6 @@ unset(CMAKE_REQUIRED_INCLUDES)
 # engine/common/build.c
 if(XASH_ANDROID)
 	set(BUILDOS "android")
-elseif(XASH_LINUX_UNKNOWN)
-	set(BUILDOS "linuxunkabi")
 elseif(XASH_WIN32 OR XASH_LINUX OR XASH_APPLE)
 	set(BUILDOS "") # no prefix for default OS
 elseif(XASH_FREEBSD)
diff --git a/public/build.h b/public/build.h
index 2f8fffae..851939b5 100644
--- a/public/build.h
+++ b/public/build.h
@@ -69,7 +69,6 @@ Then you can use another oneliner to query all variables:
 #undef XASH_IRIX
 #undef XASH_JS
 #undef XASH_LINUX
-#undef XASH_LINUX_UNKNOWN
 #undef XASH_LITTLE_ENDIAN
 #undef XASH_MIPS
 #undef XASH_MOBILE_PLATFORM
@@ -103,13 +102,6 @@ Then you can use another oneliner to query all variables:
 	#if defined __linux__
 		#if defined __ANDROID__
 			#define XASH_ANDROID 1
-		#else
-			#include <features.h>
-			// if our system libc has features.h header
-			// try to detect it to not confuse other libcs with built with glibc game libraries
-			#if !defined __GLIBC__
-				#define XASH_LINUX_UNKNOWN 1
-			#endif
 		#endif
 		#define XASH_LINUX 1
 	#elif defined __FreeBSD__
diff --git a/scripts/waifulib/library_naming.py b/scripts/waifulib/library_naming.py
index 4369b3b6..ac2faf6f 100644
--- a/scripts/waifulib/library_naming.py
+++ b/scripts/waifulib/library_naming.py
@@ -44,7 +44,6 @@ DEFINES = [
 'XASH_IRIX',
 'XASH_JS',
 'XASH_LINUX',
-'XASH_LINUX_UNKNOWN',
 'XASH_LITTLE_ENDIAN',
 'XASH_MIPS',
 'XASH_MOBILE_PLATFORM',
@@ -76,8 +75,6 @@ def configure(conf):
 	# engine/common/build.c
 	if conf.env.XASH_ANDROID:
 		buildos = "android"
-	elif conf.env.XASH_LINUX_UNKNOWN:
-		buildos = "linuxunkabi"
 	elif conf.env.XASH_WIN32 or conf.env.XASH_LINUX or conf.env.XASH_APPLE:
 		buildos = "" # no prefix for default OS
 	elif conf.env.XASH_FREEBSD: