diff --git a/rtl/linux/osmacro.inc b/rtl/linux/osmacro.inc
index 3fc1e0861c..856d003aef 100644
--- a/rtl/linux/osmacro.inc
+++ b/rtl/linux/osmacro.inc
@@ -100,19 +100,19 @@ function __lxstat64(__ver : cint; FileName: PChar; var __stat: tstat): cint; cde
 function __xmknod(__ver : cint; Pathname: PChar; Mode: mode_t; var Device: dev_t): cint; cdecl; external clib name '__xmknod';
 }
 {$define FPC_HAS_BASEUNIX_STAT}
-function  FpFstat   (fd : cint; var sb : stat): cint;
+function  FpFstat(fd : cint; var sb : stat): cint;inline;
   begin
     __fxstat(_STAT_VER,fd,sb);
   end;
 
 
-function  fpLstat       (path:pchar;Info:pstat):cint;
+function  fpLstat(path:pchar;Info:pstat):cint;inline;
   begin
     __lxstat(_STAT_VER,path,Info^);
   end;
 
 
-function  FpStat      (path: pchar; var buf : stat): cint;
+function  FpStat(path: pchar; var buf : stat): cint;inline;
   begin
     __xstat(_STAT_VER,path,buf);
   end;
diff --git a/rtl/unix/baseunix.pp b/rtl/unix/baseunix.pp
index edaf1b379f..7968a97128 100644
--- a/rtl/unix/baseunix.pp
+++ b/rtl/unix/baseunix.pp
@@ -33,6 +33,7 @@ Uses UnixType;
 
 {$ifdef FPC_USE_LIBC}
   const clib = 'c';
+  {$define FPC_IN_BASEUNIX}
   {$i oscdeclh.inc}
 {$ELSE}
   {$i bunxh.inc}                { Functions}
diff --git a/rtl/unix/oscdeclh.inc b/rtl/unix/oscdeclh.inc
index 27b3db6e95..6548496ccd 100644
--- a/rtl/unix/oscdeclh.inc
+++ b/rtl/unix/oscdeclh.inc
@@ -88,9 +88,12 @@ Type TGrpArr = Array [0..0] of TGid;            { C style array workarounds}
     function  fpsettimeofday(tp:ptimeval;tzp:ptimezone):cint; cdecl; external clib name 'settimeofday';
 
 {$ifdef linux}
-    function  FpFstat   (fd : cint; var sb : stat): cint;
-    Function  fpLstat       (path:pchar;Info:pstat):cint;
-    function  FpStat      (path: pchar; var buf : stat): cint;
+{$ifndef FPC_IS_SYSTEM}
+    { those functions are macros on linux }
+    function  FpFstat   (fd : cint; var sb : stat): cint;inline;
+    Function  fpLstat       (path:pchar;Info:pstat):cint;inline;
+    function  FpStat      (path: pchar; var buf : stat): cint;inline;
+{$endif FPC_IS_SYSTEM}
 {$else linux}
     function  FpFstat   (fd : cint; var sb : stat): cint; cdecl; external clib name 'fstat';
     Function  fpLstat       (path:pchar;Info:pstat):cint;     cdecl; external clib name 'lstat';