fixes: (after testing on other machine)

- add newly added dirs to premake.lua
- self_test is in lowlevel project and thus doesn't have cxxtest include
path set => must not include self_test.h
- wposix: make each _CRTIMP declaration extern "C" (can't rely on
definition of _CRTIMP, nor that the header is wrapped in extern "C" {})

This was SVN commit r4730.

build/premake/premake.lua

@@ -326,6 +326,7 @@ function setup_all_libs ()
 
 	source_dirs = {
 		"lib",
+		"lib/posix",
 		"lib/sysdep",
 		"lib/res",
 		"lib/res/file",
@@ -347,7 +348,7 @@ function setup_all_libs ()
 	sysdep_dirs = {
 		linux = { "lib/sysdep/unix" },
 		-- note: RC file must be added to main_exe package.
-		windows = { "lib/sysdep/win" },
+		windows = { "lib/sysdep/win", "lib/sysdep/win/wposix" },
 		macosx = { "lib/sysdep/osx" },
 	}
 	tinsert(package.files, sourcesfromdirs(source_root, sysdep_dirs[OS]));

source/lib/sysdep/win/wposix/waio.h

@@ -90,7 +90,7 @@ extern int close(int);
 
 extern int read (int fd, void* buf, size_t nbytes);	// thunk
 extern int write(int fd, void* buf, size_t nbytes);	// thunk
-extern _CRTIMP off_t lseek(int fd, off_t ofs, int whence);
+extern "C" _CRTIMP off_t lseek(int fd, off_t ofs, int whence);
 
 
 //

source/lib/sysdep/win/wposix/wfilesystem.h

@@ -89,8 +89,8 @@ extern char* realpath(const char*, char*);
 //    hence, the file is reported executable if it exists.
 #define X_OK 0
 
-extern _CRTIMP int access(const char*, int);
+extern "C" _CRTIMP int access(const char*, int);
 
-extern _CRTIMP int rmdir(const char*);
+extern "C" _CRTIMP int rmdir(const char*);
 
 #endif	// #ifndef INCLUDED_WFILESYSTEM

source/lib/sysdep/win/wposix/wposix_internal.h

@@ -17,7 +17,7 @@
 // is a last resort (e.g. if the regular CRT headers would conflict).
 #ifndef _CRTIMP
 # ifdef  _DLL
-#  define _CRTIMP extern "C" __declspec(dllimport)
+#  define _CRTIMP __declspec(dllimport)
 # else
 #  define _CRTIMP
 # endif