diff mbox

[stable-1.1,16/26] configure: Fix build for some versions of glibc (9pfs)

Message ID 1340411610-22596-17-git-send-email-mdroth@linux.vnet.ibm.com
State New
Headers show

Commit Message

Michael Roth June 23, 2012, 12:33 a.m. UTC 
From: Stefan Weil <sw@weilnetz.de>

Some versions declare open_by_handle_at, but don't define AT_EMPTY_PATH.
Extend the check in configure to test both preconditions.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com>
---
 configure |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/configure b/configure
index 268ed21..72d16a4 100755
--- a/configure
+++ b/configure
@@ -2811,7 +2811,11 @@  fi
 open_by_hande_at=no
 cat > $TMPC << EOF
 #include <fcntl.h>
+#if !defined(AT_EMPTY_PATH)
+# error missing definition
+#else
 int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
+#endif
 EOF
 if compile_prog "" "" ; then
     open_by_handle_at=yes