This patch prevents the tests from being built. This is required for platforms that do not support pthreads.
--- a/Makefile.in
+++ b/Makefile.in
@@ -278,8 +278,8 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I config
-@BUILD_PGM_FALSE@SUBDIRS = src doc perf tests
-@BUILD_PGM_TRUE@SUBDIRS = foreign/openpgm src doc perf tests
+@BUILD_PGM_FALSE@SUBDIRS = src doc
+@BUILD_PGM_TRUE@SUBDIRS = foreign/openpgm src doc
 DIST_SUBDIRS = foreign/openpgm src doc perf tests builds/msvc
 EXTRA_DIST = \
 	autogen.sh	\