openwrt-packages-dist/utils/qemu/patches/0003-disable-avx2_opt-with-musl.patch

--- a/configure.orig	2016-11-22 17:35:12.069598617 +0800
+++ b/configure	2016-11-22 18:24:01.042515353 +0800
@@ -1789,7 +1789,10 @@ static void foo(void) __attribute__((ifu
 int main(void) { foo(); return 0; }
 EOF
 if compile_prog "-mavx2" "" ; then
-    if readelf --syms $TMPE |grep "IFUNC.*foo" >/dev/null 2>&1; then
+    if readelf --program-headers $TMPE | grep -iq 'Requesting program interpreter: .*ld-musl'; then
+        # ifunc support is not available with dynamic linker of musl
+        avx2_opt="no"
+    elif readelf --syms $TMPE |grep "IFUNC.*foo" >/dev/null 2>&1; then
         avx2_opt="yes"
     fi
 fi