unit tests: more build adjustments

tests/unit/Makefile.am

@@ -48,30 +48,21 @@ INCLUDES = -I$(top_builddir)/include/curl \
            -I$(top_builddir)/include      \
            -I$(top_srcdir)/include        \
            -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib 		  \
+           -I$(top_srcdir)/lib            \
            -I$(top_srcdir)/tests/libtest
 endif
 
-if CURLDEBUG
-
 EXTRA_DIST = Makefile.inc
 
 LDADD = $(top_builddir)/lib/libcurlu.la @CURL_LIBS@
 DEPENDENCIES = $(top_builddir)/lib/libcurlu.la
 AM_CPPFLAGS = -DUNITTESTS
 
-# Makefile.inc provides the source defines (TESTUTIL, SUPPORTFILES,
-# noinst_PROGRAMS, lib*_SOURCES, and lib*_CFLAGS)
+# Makefile.inc provides neat definitions
 include Makefile.inc
 
-if NO_UNDEFINED
-# The -no-undefined flag is crucial to build fine on some platforms
-UNDEF = -no-undefined
-endif
-
-
+if BUILD_UNITTESTS
+noinst_PROGRAMS = $(UNITPROGS)
 else
-# do nothing if debug was not enabled
-all:
-
+noinst_PROGRAMS =
 endif