diff --git a/meson.build b/meson.build
index e05744b53e9791469ff7aee17745f6a458282938..72640a178037a1623d52e0a6fed98e4fb5320525 100644
--- a/meson.build
+++ b/meson.build
@@ -508,17 +508,18 @@ _include_search_paths = [
     '/usr/local/include',
 ] 
 foreach idir : _include_search_paths
-    message('search ' + idir)
+    #message('search ' + idir)
     _ret = run_command('meson/directory_exists.sh',idir).returncode()
-    message('ret = ' + _ret.to_string())
+    #message('ret = ' + _ret.to_string())
     if _ret == 0
         inc_arg = idir
+        absolute_incdirs += idir
         _Inc_arg = '-I' + idir
         if not found and compiler.has_header('gsl/gsl_blas.h',
                                              args: _Inc_arg)
             my_incdirs += [inc_arg]
             found = true
-            message('found')
+            #message('found')
         endif
     endif
 endforeach
@@ -526,7 +527,7 @@ endforeach
 incdirs += [ my_incdirs ]
 
 _i = ' '.join(my_incdirs)
-message('Incdirs are ' + _i)
+#message('Incdirs are ' + _i)
 
 ############################################################
 # features which are converted into preprocessor flags (-D)
@@ -651,7 +652,7 @@ cflags_quoted = ''.join(cflags_quoted.split('"'))  # remove "
 cflags_quoted = '-DCFLAGS=' + ''.join(['"', cflags_quoted , '"']) # surround in " ... "
 cc_quoted = '-DCC="' + compiler.get_id() + '"'
 ld_quoted = '-DLD="' + compiler.get_id() + '"'
-incdirs_quoted = '-DINCDIRS=' + ''.join(['"-I', ' -I'.join(absolute_incdirs),'"']) # make -I... -I...
+incdirs_quoted = '-DINCDIRS=' + ''.join(['"-I',' -I'.join(absolute_incdirs),'"']) # make -I... -I...
 message('INCDIRS=' + incdirs_quoted)
 incdirs_quoted = '_slash_'.join(incdirs_quoted.split('/')) # deslash (convert / to _slash_)
 libdirs_quoted = '-DLIBDIRS=' + ''.join(['"-L', ' -L'.join(libdirs),'"']) # make -L... -L...