diff --git a/Makefile.m4 b/Makefile.m4
index a6a100b..3371b47 100644
--- a/Makefile.m4
+++ b/Makefile.m4
@@ -14,6 +14,7 @@ ifelse(substr(OS,0,7),[MINGW32],[define([OS],[MINGW32])])
 ifelse(OS,NetBSD,[define([OS],[BSD])CXXFLAGS+=-D__unix])
 ifelse(OS,OpenBSD,[define([OS],[BSD])])
 ifelse(OS,FreeBSD,[define([OS],[BSD])LDLIBS=-lcam])
+ifelse(OS,GNU/kFreeBSD,[define([OS],[Linux])LDLIBS=-lcam])
 ifelse(OS,IRIX64,[define([OS],[IRIX])])
 
 ifelse(OS,Darwin,[
@@ -188,7 +189,7 @@ CC	=gcc
 CFLAGS	+=$(WARN) -O2 -D_REENTRANT
 CXX	=g++
 CXXFLAGS+=$(WARN) -O2 -fno-exceptions -D_REENTRANT
-LDLIBS	=-lpthread
+LDLIBS	+=-lpthread
 LINK.o	=$(LINK.cc)
 
 prefix?=/usr/local
diff --git a/growisofs.c b/growisofs.c
index 6c47192..959ac31 100644
--- a/growisofs.c
+++ b/growisofs.c
@@ -403,7 +403,7 @@
 #define _LARGEFILE64_SOURCE
 #define _FILE_OFFSET_BITS 64
 
-#if defined(__linux)
+#if defined(__linux) || defined(__GLIBC__)
 /* ... and "engage" glibc large file support */
 # ifndef _GNU_SOURCE
 #  define _GNU_SOURCE
@@ -459,7 +459,7 @@
 # define FATAL_START(e)	(0x80|(e))
 # define FATAL_MASK	 0x7F
 
-#ifdef __FreeBSD__
+#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
 # include <sys/syscall.h>
 # ifndef SYS_mlockall
 #  define SYS_mlockall 324
@@ -995,7 +995,7 @@ char *setup_fds (char *device)
     goto open_rw;
 }
 
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
 
 #include <sys/cdio.h>
 #include <camlib.h>
@@ -2937,7 +2937,7 @@ int main (int argc, char *argv[])
 	    if (setrlimit(RLIMIT_MEMLOCK,&rlim)) break;
 	}
 # endif
-# ifdef __FreeBSD__
+# if defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
 	syscall(SYS_mlockall,3);
 # else
 	mlockall(MCL_CURRENT|MCL_FUTURE);
diff --git a/transport.hxx b/transport.hxx
index 35a57a7..7b652c5 100644
--- a/transport.hxx
+++ b/transport.hxx
@@ -483,7 +483,7 @@ public:
     {	return 1;   }
 };
 
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 
 #include <sys/ioctl.h>
 #include <camlib.h>