diff --git a/pd/extra/expr~/makefile b/pd/extra/expr~/makefile
deleted file mode 100644
index a80179f585cd2a465b9d6dcad4e1348eca5369a2..0000000000000000000000000000000000000000
--- a/pd/extra/expr~/makefile
+++ /dev/null
@@ -1,189 +0,0 @@
-
-current: expr.pd_linux expr~.pd_linux fexpr~.pd_linux \
-     ../expr.pd_linux ../expr~.pd_linux ../fexpr~.pd_linux
-
-install: install_linux
-
-clean: clean_linux
-
-PDEXTERN=/usr/local/lib/pd/extra
-
-# ----------------------- NT -----------------------
-
-pd_nt: expr.dll
-
-NTOBJ =  vexp.obj vexp_fun.obj vexp_if.obj
-
-PDNTCFLAGS = /W3 /DNT /DPD /nologo
-VC = "C:\Program Files\Microsoft Visual Studio 9.0\VC"
-VSTK = "C:\Program Files\Microsoft SDKs\Windows\v6.0A"
-
-PDNTINCLUDE = /I. /I..\..\src /I$(VC)\include
-
-PDNTLDIR = $(VC)\lib
-PDNTLIB = /NODEFAULTLIB:libcmt /NODEFAULTLIB:oldnames /NODEFAULTLIB:kernel32 \
-	$(PDNTLDIR)\libcmt.lib $(PDNTLDIR)\oldnames.lib \
-        $(VSTK)\lib\kernel32.lib \
-	 ..\..\bin\pd.lib 
-
-.c.obj:
-	cl $(PDNTCFLAGS) $(PDNTINCLUDE) /c $*.c
-
-expr.dll: $(NTOBJ)
-	link /dll /export:expr_setup /export:expr_tilde_setup \
-	    /export:fexpr_tilde_setup $(NTOBJ) $(PDNTLIB)
-	ren vexp.dll expr.dll
-	copy expr.dll ..\expr.dll
-	copy expr.dll ..\expr~.dll
-	copy expr.dll ..\fexpr~.dll
-	copy help-expr.pd ..\help-expr.pd
-
-# ----------------------- IRIX 5.x -----------------------
-
-pd_irix5: 
-
-.SUFFIXES: .pd_irix5
-
-SGICFLAGS5 = -o32 -DPD -DSGI -O2
-
-
-SGIINCLUDE =  -I/usr/people/msp/pd/pd/src
-
-.c.pd_irix5:
-	$(CC) $(SGICFLAGS5) $(SGIINCLUDE) -o $*.o -c $*.c
-	ld -elf -shared -rdata_shared -o $*.pd_irix5 $*.o
-	rm $*.o
-
-# ----------------------- IRIX 6.x -----------------------
-
-pd_irix6: 
-
-.SUFFIXES: .pd_irix6
-
-SGICFLAGS6 = -DPD -DSGI -n32 \
-	-OPT:roundoff=3 -OPT:IEEE_arithmetic=3 -OPT:cray_ivdep=true \
-	-Ofast=ip32
-
-SGICFLAGS5 = -DPD -O2 -DSGI
-
-SGIINCLUDE =  -I/usr/people/msp/pd/pd/src
-
-.c.pd_irix6:
-	$(CC) $(SGICFLAGS6) $(SGIINCLUDE) -o $*.o -c $*.c
-	ld -elf -shared -rdata_shared -o $*.pd_irix6 $*.o
-	rm $*.o
-
-# ----------------------- LINUX i386 -----------------------
-
-LINUXOBJ =  vexp.pd_linux_o vexp_fun.pd_linux_o vexp_if.pd_linux_o
-.SUFFIXES: .pd_linux_o
-
-LINUXCFLAGS = -DPD -O2 -funroll-loops -fomit-frame-pointer -fPIC \
-    -fno-strict-aliasing -Wall -W -Wshadow -Wstrict-prototypes \
-    -Wno-unused-parameter -Wno-parentheses -Wno-switch 
-
-LINUXINCLUDE =  -I../../src
-
-.c.pd_linux_o:
-	$(CC) -g $(LINUXCFLAGS) $(LINUXINCLUDE) -o $*.pd_linux_o -c $*.c
-
-expr.pd_linux: $(LINUXOBJ)
-	$(CC)  -shared -o expr.pd_linux $(LINUXOBJ) -lc -lm
-
-expr~.pd_linux: expr.pd_linux
-	-ln -s expr.pd_linux expr~.pd_linux
-
-fexpr~.pd_linux: expr.pd_linux
-	-ln -s expr.pd_linux fexpr~.pd_linux
-
-../expr.pd_linux: expr.pd_linux
-	-ln -s expr~/expr.pd_linux ../expr.pd_linux
-
-../expr~.pd_linux: expr.pd_linux
-	-ln -s expr~/expr.pd_linux ../expr~.pd_linux
-
-../fexpr~.pd_linux: expr.pd_linux
-	-ln -s expr~/expr.pd_linux ../fexpr~.pd_linux
-
-install_linux:
-	install expr.pd_linux $(PDEXTERN)
-	rm -f $(PDEXTERN)/expr~.pd_linux
-	rm -f $(PDEXTERN)/fexpr~.pd_linux
-	cd $(PDEXTERN); ln -s expr.pd_linux expr~.pd_linux
-	cd $(PDEXTERN); ln -s expr.pd_linux fexpr~.pd_linux
-
-
-clean_linux:
-	rm -f *.pd_linux_o *.o
-
-# ----------------------- MAC OSX -----------------------
-
-MACOSXOBJ3 =  vexp.d_ppc_o vexp_fun.d_ppc_o vexp_if.d_ppc_o
-MACOSXOBJ =  vexp.d_fat_o vexp_fun.d_fat_o vexp_if.d_fat_o
-.SUFFIXES: .d_ppc_o .d_fat_o
-
-MACOSXCFLAGS = -DMACOSX -DPD -O2 -Wall -W -Wshadow -Wstrict-prototypes \
-    -Wno-unused-parameter -Wno-parentheses -Wno-switch 
-
-MACOSXINCLUDE =  -I../../src
-
-d_ppc: expr.d_ppc expr~.d_ppc fexpr~.d_ppc
-.c.d_ppc_o:
-	$(CC) -g $(MACOSXCFLAGS) $(MACOSXINCLUDE) -o $*.d_ppc_o -c $*.c
-
-expr.d_ppc: $(MACOSXOBJ3)
-	$(CC) -bundle -undefined suppress  -flat_namespace \
-		-o expr.d_ppc $(MACOSXOBJ3)  -lm
-	rm -f ../expr.d_ppc
-	-ln -s expr~/expr.d_ppc ..
-
-expr~.d_ppc: expr.d_ppc
-	-ln -s expr.d_ppc expr~.d_ppc
-	rm -f ../expr~.d_ppc
-	-ln -s expr~/expr~.d_ppc ..
-
-fexpr~.d_ppc: expr.d_ppc
-	-ln -s expr.d_ppc fexpr~.d_ppc
-	rm -f ../fexpr~.d_ppc
-	-ln -s expr~/fexpr~.d_ppc ..
-
-install_d_fat:
-	install expr.d_fat $(PDEXTERN)
-	rm -f $(PDEXTERN)/expr~.d_fat
-	rm -f $(PDEXTERN)/fexpr~.d_fat
-	cd $(PDEXTERN); \
-	-ln -s expr.d_fat expr~.d_fat; \
-	-ln -s expr.d_fat fexpr~.d_fat
-
-d_fat: expr.d_fat expr~.d_fat fexpr~.d_fat
-.c.d_fat_o:
-	$(CC) -g $(MACOSXCFLAGS) $(MACOSXINCLUDE)  -arch i386 -arch ppc \
-	-o $*.d_fat_o -c $*.c
-
-expr.d_fat: $(MACOSXOBJ)
-	$(CC) -arch i386 -arch ppc -bundle -undefined suppress  -flat_namespace \
-		-o expr.d_fat $(MACOSXOBJ)  -lm
-	rm -f ../expr.d_fat
-	-ln -s expr~/expr.d_fat ..
-
-expr~.d_fat: expr.d_fat
-	-ln -s expr.d_fat expr~.d_fat
-	rm -f ../expr~.d_fat
-	-ln -s expr~/expr~.d_fat ..
-
-fexpr~.d_fat: expr.d_fat
-	-ln -s expr.d_fat fexpr~.d_fat
-	rm -f ../fexpr~.d_fat
-	-ln -s expr~/fexpr~.d_fat ..
-
-install_d_ppc:
-	install expr.d_ppc $(PDEXTERN)
-	rm -f $(PDEXTERN)/expr~.d_ppc
-	rm -f $(PDEXTERN)/fexpr~.d_ppc
-	cd $(PDEXTERN); \
-	-ln -s expr.d_ppc expr~.d_ppc; \
-	-ln -s expr.d_ppc fexpr~.d_ppc
-
-clean_d_ppc:
-	rm -f *.d_ppc_o *.o
-