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-rw-r--r--INSTALL4
1 files changed, 4 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index 6b29b2d9fd..0b72af6c41 100644
--- a/INSTALL
+++ b/INSTALL
@@ -307,6 +307,10 @@ have to reboot/reconfigure/rebuild your operating system to be 64-bit
aware.
Natively 64-bit systems need neither -Duse64bitint nor -Duse64bitall.
+On these systems, it might be the default compilation mode, and there
+is currently no guarantee that passing no use64bitall option to the
+Configure process will build a 32bit perl. Implementing -Duse32bit*
+options is planned for perl 5.12.
=head3 Long doubles