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[v3,1/4] configure: handle clang -nopie argument warning

Message ID 1426791697-17895-2-git-send-email-jsnow@redhat.com
State New
Headers show

Commit Message

John Snow March 19, 2015, 7:01 p.m. UTC 
From: Stefan Hajnoczi <stefanha@redhat.com>

gcc 4.9.2 treats -nopie as an error:

  cc: error: unrecognized command line option ‘-nopie’

clang 3.5.0 treats -nopie as a warning:

  clang: warning: argument unused during compilation: '-nopie'

The causes ./configure to fail with clang:

  ERROR: configure test passed without -Werror but failed with -Werror.

Make the -nopie test use -Werror so that compile_prog works for both gcc
and clang.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/configure b/configure
index f74a6fd..062df84 100755
--- a/configure
+++ b/configure
@@ -1589,7 +1589,7 @@  EOF
     fi
   fi
 
-  if compile_prog "-fno-pie" "-nopie"; then
+  if compile_prog "-Werror -fno-pie" "-nopie"; then
     CFLAGS_NOPIE="-fno-pie"
     LDFLAGS_NOPIE="-nopie"
   fi