diff -rupN original/Makefile.am new/Makefile.am
--- original/Makefile.am	2014-04-04 21:32:41.580287975 +0200
+++ new/Makefile.am	2014-04-04 21:32:31.461068264 +0200
@@ -31,7 +31,7 @@ CHICKEN_EGG=. threads
 endif
 
 SUBDIRS=support $(GENFFT) kernel simd-support dft rdft reodft api	\
-libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
+libbench2 $(CHICKEN_EGG) tests tools m4
 EXTRA_DIST=COPYRIGHT bootstrap.sh CONVENTIONS fftw.pc.in
 
 SIMD_LIBS =						\
diff -rupN original/Makefile.in new/Makefile.in
--- original/Makefile.in	2014-04-04 21:32:44.556352845 +0200
+++ new/Makefile.in	2014-04-04 21:32:34.918143174 +0200
@@ -232,7 +232,7 @@ ETAGS = etags
 CTAGS = ctags
 CSCOPE = cscope
 DIST_SUBDIRS = support genfft kernel simd-support dft rdft reodft api \
-	libbench2 . threads tests mpi doc tools m4
+	libbench2 . threads tests tools m4
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -444,7 +444,7 @@ ACLOCAL_AMFLAGS = -I m4
 #
 @COMBINED_THREADS_TRUE@CHICKEN_EGG = threads .
 SUBDIRS = support $(GENFFT) kernel simd-support dft rdft reodft api	\
-libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
+libbench2 $(CHICKEN_EGG) tests tools m4
 
 EXTRA_DIST = COPYRIGHT bootstrap.sh CONVENTIONS fftw.pc.in
 SIMD_LIBS = \
