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[Qemu-devel] [PATCH v3 1/2] Make avx2 configure test work with -O2
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From: |
Dr. David Alan Gilbert (git) |
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Subject: |
[Qemu-devel] [PATCH v3 1/2] Make avx2 configure test work with -O2 |
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Date: |
Fri, 10 Jun 2016 12:16:17 +0100 |
From: "Dr. David Alan Gilbert" <address@hidden>
When configured with --extra-cflags=-O2 gcc optimised out the test
and the readelf failed the check leaving avx2 disabled.
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
---
configure | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/configure b/configure
index 8c2f90b..ffa5b62 100755
--- a/configure
+++ b/configure
@@ -1784,7 +1784,7 @@ fi
cat > $TMPC << EOF
static void bar(void) {}
static void *bar_ifunc(void) {return (void*) bar;}
-static void foo(void) __attribute__((ifunc("bar_ifunc")));
+void foo(void) __attribute__((ifunc("bar_ifunc")));
int main(void) { foo(); return 0; }
EOF
if compile_prog "-mavx2" "" ; then
--
2.7.4