# HG changeset patch
# User Johannes Stezenbach <js@sig21.net>
# Date 1329163806 -3600
# Node ID 9362b3751bbc75820fc9841ae8ae25e51cbfba98
# Parent  8651f30987b6e1e806420cd9db6198a6dae5fd63
docs/known-issues: add note about build issue on x86_64 with 32bit userspace

Signed-off-by: Johannes Stezenbach <js@sig21.net>
(transplanted from da77b5e7cb9f921d0e2a22818b7945906100e704)

diff -r 8651f30987b6 -r 9362b3751bbc docs/B - Known issues.txt
--- a/docs/B - Known issues.txt	Wed Feb 08 00:44:52 2012 +0100
+++ b/docs/B - Known issues.txt	Mon Feb 13 21:10:06 2012 +0100
@@ -233,3 +233,23 @@
   See above issue.
 
 --------------------------------
+Symptoms:
+  On x86_64 hosts with 32bit userspace the GMP build fails with:
+    configure: error: Oops, mp_limb_t is 32 bits, but the assembler code
+    in this configuration expects 64 bits.
+    You appear to have set $CFLAGS, perhaps you also need to tell GMP the
+    intended ABI, see "ABI and ISA" in the manual.
+
+Explanations:
+  "uname -m" detects x86_64 but the build host is really x86.
+
+Status:
+  CURRENT
+
+Fix:
+  None so far. See above issue.
+
+Workaround:
+  use "setarch i686 ct-ng build"
+
+--------------------------------