* have to define the constant in the negative case as well :(

This commit was SVN r6403.

ompi/tools/wrappers/Makefile.am

@@ -28,6 +28,8 @@ AM_CPPFLAGS   = \
 
 if WANT_INSTALL_HEADERS
 AM_CPPFLAGS += -DOMPI_WANT_DEVEL_HEADERS=1
+else
+AM_CPPFLAGS += -DOMPI_WANT_DEVEL_HEADERS=0
 endif
 
 EXTRA_DIST = wrap.cc wrap_engine.cc $(pkgdata_DATA)