diff --git a/Make.rules.in b/Make.rules.in
index 72202457b64..43867233de4 100644
--- a/Make.rules.in
+++ b/Make.rules.in
@@ -32,6 +32,7 @@ EXEEXT    = @EXEEXT@
 OBJEXT    = @OBJEXT@
 LIBEXT    = @LIBEXT@
 DLLEXT    = @DLLEXT@
+TOOLSEXT  = @TOOLSEXT@
 IMPLIBEXT = @IMPLIBEXT@
 LDSHARED  = @LDSHARED@
 DLLTOOL   = @DLLTOOL@
@@ -65,16 +66,15 @@ WINAPI_CHECK = $(TOPSRCDIR)/tools/winapi/winapi_check
 WINEWRAPPER  = $(TOPSRCDIR)/tools/winewrapper
 C2MAN        = $(TOPSRCDIR)/tools/c2man.pl
 RUNTEST      = $(TOPSRCDIR)/tools/runtest
-WINEBUILD    = $(TOOLSDIR)/tools/winebuild/winebuild
-MAKEDEP      = $(TOOLSDIR)/tools/makedep
-MAKECTESTS   = $(TOOLSDIR)/tools/make_ctests
-WRC          = $(TOOLSDIR)/tools/wrc/wrc
-WMC          = $(TOOLSDIR)/tools/wmc/wmc
-WIDL         = $(TOOLSDIR)/tools/widl/widl
+WINEBUILD    = $(TOOLSDIR)/tools/winebuild/winebuild$(TOOLSEXT)
+MAKEDEP      = $(TOOLSDIR)/tools/makedep$(TOOLSEXT)
+MAKECTESTS   = $(TOOLSDIR)/tools/make_ctests$(TOOLSEXT)
+WRC          = $(TOOLSDIR)/tools/wrc/wrc$(TOOLSEXT)
+WMC          = $(TOOLSDIR)/tools/wmc/wmc$(TOOLSEXT)
+WIDL         = $(TOOLSDIR)/tools/widl/widl$(TOOLSEXT)
 WINEGCC      = $(TOOLSDIR)/tools/winegcc/winegcc $(TARGETFLAGS) -B$(TOOLSDIR)/tools/winebuild --sysroot=$(TOPOBJDIR)
-RELPATH      = $(TOOLSDIR)/tools/relpath
-SFNT2FNT     = $(TOOLSDIR)/tools/sfnt2fnt
-FNT2FON      = $(TOOLSDIR)/tools/fnt2fon
+RELPATH      = $(TOOLSDIR)/tools/relpath$(TOOLSEXT)
+SFNT2FNT     = $(TOOLSDIR)/tools/sfnt2fnt$(TOOLSEXT)
 RC           = $(WRC)
 RC16         = $(WRC)
 RCFLAGS      = --nostdinc $(INCLUDES) $(DEFS) $(EXTRARCFLAGS)
diff --git a/Makefile.in b/Makefile.in
index 690b003c5b6..2d2d8b77fd5 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -119,7 +119,7 @@ RECURSE_TARGETS = \
 depend $(RECURSE_TARGETS): $(MAKEDEP)
 
 $(MAKEDEP): include/config.h
-	@cd $(TOOLSDIR)/tools && $(MAKE) makedep
+	@cd $(TOOLSDIR)/tools && $(MAKE) makedep$(TOOLSEXT)
 
 # Test rules
 
diff --git a/configure b/configure
index 052154bc153..d8db56d133c 100755
--- a/configure
+++ b/configure
@@ -612,6 +612,7 @@ EXTRA_BINARIES
 MAIN_BINARY
 SOCKETLIBS
 CRTLIBS
+TOOLSEXT
 LDPATH
 BUILTINFLAG
 EXTRACFLAGS
@@ -11971,6 +11972,8 @@ LDPATH=""
 
 case $build_os in
   cygwin*|mingw32*)
+    TOOLSEXT=".exe"
+
     LDPATH="PATH=\"\$(TOOLSDIR)/libs/wine:\$\$PATH\""
     ;;
   darwin*|macosx*)
diff --git a/configure.ac b/configure.ac
index 1563876666d..5c753c0badb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1593,6 +1593,7 @@ dnl **** Platform-specific checks ****
 AC_SUBST(LDPATH,"")
 case $build_os in
   cygwin*|mingw32*)
+    AC_SUBST(TOOLSEXT,".exe")
     LDPATH="PATH=\"\$(TOOLSDIR)/libs/wine:\$\$PATH\""
     ;;
   darwin*|macosx*)
diff --git a/libs/wine/Makefile.in b/libs/wine/Makefile.in
index 5af1f94268d..4be83019530 100644
--- a/libs/wine/Makefile.in
+++ b/libs/wine/Makefile.in
@@ -182,6 +182,6 @@ clean::
 	$(RM) libwine.so.$(SOVERSION) libwine.so.$(VERSION) version.c
 
 $(RELPATH):
-	@cd $(TOOLSDIR)/tools && $(MAKE) relpath
+	@cd $(TOOLSDIR)/tools && $(MAKE) relpath$(TOOLSEXT)
 
 @DEPENDENCIES@  # everything below this line is overwritten by make depend