doc: README: recommend GNU make to run tests on IRIX 6.5 and Solaris 9

* README: Document vendor "make check" failure on those two systems.
Reported by Bruno Haible.

diff --git a/README b/README
index 90b1d40..b3af07b 100644 (file)
--- a/README
+++ b/README
@@ -134,6 +134,14 @@ the best solution is to use GNU make.  Otherwise, simply remove
 all mention of "[$(EXEEXT)" from src/Makefile.
 
 
+*************************************************
+"make check" failure on IRIX 6.5 and Solaris <= 9
+-------------------------------------------------
+
+Using the vendor make program to run "make check" fails on these two systems.
+If you want to run all of the tests there, use GNU make.
+
+
 
 **********************
 Running tests as root: