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docs/known-issues: add note about build issue on x86_64 with 32bit userspace

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Signed-off-by: Johannes Stezenbach <js@sig21.net>
(transplanted from da77b5e7cb9f921d0e2a22818b7945906100e704)
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Johannes Stezenbach 2012-02-13 21:10:06 +01:00
parent 3b6aa027d7
commit b8bbe07c7a
1 changed files with 20 additions and 0 deletions
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docs/B - Known issues.txt
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@ -233,3 +233,23 @@ Workaround:
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"
--------------------------------