diff -r 353420330f35 Makefile
--- a/Makefile	Fri May 18 10:10:24 2018 +0200
+++ b/Makefile	Sun May 20 16:37:06 2018 +0000
@@ -10,7 +10,7 @@
 RUNINTERP = $(PYPY_EXECUTABLE)
 endif
 
-.PHONY: pypy-c cffi_imports
+.PHONY: pypy-c #cffi_imports
 
 pypy-c:
 	@echo
diff -r 353420330f35 rpython/rlib/rvmprof/cintf.py
--- a/rpython/rlib/rvmprof/cintf.py	Fri May 18 10:10:24 2018 +0200
+++ b/rpython/rlib/rvmprof/cintf.py	Sun May 20 16:37:06 2018 +0000
@@ -17,7 +17,7 @@
 
 # vmprof works only on x86 for now
 IS_SUPPORTED = False
-if sys.platform in ('darwin', 'linux', 'linux2'):
+if sys.platform in ('darwin', 'linux', 'linux2', 'freebsd10', 'freebsd11'):
     try:
         IS_SUPPORTED = detect_cpu.autodetect().startswith('x86')
     except detect_cpu.ProcessorAutodetectError:
diff -r 353420330f35 rpython/rlib/rvmprof/src/shared/vmprof_unix.h
--- a/rpython/rlib/rvmprof/src/shared/vmprof_unix.h	Fri May 18 10:10:24 2018 +0200
+++ b/rpython/rlib/rvmprof/src/shared/vmprof_unix.h	Sun May 20 16:37:06 2018 +0000
@@ -24,6 +24,9 @@
 
 #include "vmprof_mt.h"
 
+#ifdef __FreeBSD__
+#include <ucontext.h>
+#endif
 #include <signal.h>
 
 RPY_EXTERN void vmprof_ignore_signals(int ignored);