added "Known problems" section

1 files changed, 9 insertions, 0 deletions

diff --git a/INSTALL b/INSTALL
index 163f1dd..c0d981e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -59,6 +59,15 @@ In case of difficulties, please send a description of the problem to
 
 ##############################################################################
 
+Known problems:
+===============
+
+When LD_LIBRARY_PATH is set to various paths, it might confuse the configure
+script, even with --with-gmp and --with-mpfr options. Then try to unset
+LD_LIBRARY_PATH.
+
+##############################################################################
+
 Note for AIX users:
 ===================