diff --git a/cmake-proxies/pffft/CMakeLists.txt b/cmake-proxies/pffft/CMakeLists.txt
index cfeba12d8687..11525efa9b59 100644
--- a/cmake-proxies/pffft/CMakeLists.txt
+++ b/cmake-proxies/pffft/CMakeLists.txt
@@ -13,3 +13,4 @@ set(INCLUDES
 set_target_properties( ${TARGET} PROPERTIES FOLDER "lib-src" )
 target_sources( ${TARGET} PRIVATE ${SOURCES} )
 target_include_directories( ${TARGET} PUBLIC ${INCLUDES} )
+set_property(TARGET ${TARGET} PROPERTY POSITION_INDEPENDENT_CODE ON)
diff --git a/lib-src/libnyquist/nyquist/xlisp/path.c b/lib-src/libnyquist/nyquist/xlisp/path.c
index 41babde8d8c2..67fbb03fa437 100644
--- a/lib-src/libnyquist/nyquist/xlisp/path.c
+++ b/lib-src/libnyquist/nyquist/xlisp/path.c
@@ -25,6 +25,7 @@
  */
 
 #include <string.h>
+#include <stdint.h>
 
 #include "switches.h"
 #include "xlisp.h"
diff --git a/libraries/lib-basic-ui/BasicUI.cpp b/libraries/lib-basic-ui/BasicUI.cpp
index dca8c180c6cd..947c5600ea45 100644
--- a/libraries/lib-basic-ui/BasicUI.cpp
+++ b/libraries/lib-basic-ui/BasicUI.cpp
@@ -29,6 +29,11 @@ Paul Licameli
 
 #include <string>
 
+#ifdef __FreeBSD__
+extern char** environ;
+#endif
+
+
 namespace
 {
 
diff --git a/src/ListNavigationPanel.h b/src/ListNavigationPanel.h
index 1618d7865e1c..509fd0e6c752 100644
--- a/src/ListNavigationPanel.h
+++ b/src/ListNavigationPanel.h
@@ -13,7 +13,9 @@
 #include <wx/window.h>
 #include <wx/containr.h>
 
+#ifndef __FreeBSD__
 extern template class WXDLLIMPEXP_CORE wxNavigationEnabled<wxWindow>;
+#endif
 
 #include "ListNavigationEnabled.h"