From: Rebecca Cran <rebecca@bsdio.com>
To: qemu-devel@nongnu.org, Michael Tokarev <mjt@tls.msk.ru>,
Laurent Vivier <laurent@vivier.eu>,
qemu-trivial@nongnu.org
Cc: Rebecca Cran <rebecca@bsdio.com>
Subject: [Qemu-devel] [PATCH] Update the avx2 configure test to be compatible with clang
Date: Thu, 8 Aug 2019 22:19:52 -0600 [thread overview]
Message-ID: <20190809041952.57302-1-rebecca@bsdio.com> (raw)
clang doesn't support the GCC pragma to enable AVX2, but instead
requires the command line option -mavx2. Since GCC also supports that,
remove the pragma lines and add the -mavx2 option when building the
test.
Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
---
configure | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/configure b/configure
index 714e7fb6a1..30d6c02ab4 100755
--- a/configure
+++ b/configure
@@ -5392,8 +5392,6 @@ fi
if test "$cpuid_h" = "yes" && test "$avx2_opt" != "no"; then
cat > $TMPC << EOF
-#pragma GCC push_options
-#pragma GCC target("avx2")
#include <cpuid.h>
#include <immintrin.h>
static int bar(void *a) {
@@ -5402,7 +5400,7 @@ static int bar(void *a) {
}
int main(int argc, char *argv[]) { return bar(argv[0]); }
EOF
- if compile_object "" ; then
+ if compile_object "-mavx2" ; then
avx2_opt="yes"
else
avx2_opt="no"
--
2.22.0
next reply other threads:[~2019-08-09 4:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 4:19 Rebecca Cran [this message]
2019-08-09 4:52 ` [Qemu-devel] [PATCH] Update the avx2 configure test to be compatible with clang no-reply
2019-08-09 5:22 ` Richard Henderson
2019-08-09 15:17 ` Rebecca Cran
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