Merge commit 'origin/master' into maemo-test

[qemu] / configure

diff --git a/configure b/configure
index faacb8d..ee8e446 100755 (executable)
--- a/configure
+++ b/configure
@@ -1064,6 +1064,32 @@ EOF
   fi
 fi
 
+#
+# Check for xxxat() functions when we are building linux-user
+# emulator.  This is done because older glibc versions don't
+# have syscall stubs for these implemented.  In that case we
+# don't provide them even if kernel supports them.
+#
+atfile=no
+if [ "$linux_user" = "yes" ] ; then
+  cat > $TMPC << EOF
+#define _ATFILE_SOURCE
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int
+main(void)
+{ 
+       /* try to unlink nonexisting file */
+       return (unlinkat(AT_FDCWD, "nonexistent_file", 0));
+}
+EOF
+  if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
+    atfile=yes
+  fi
+fi
+
 # Check if tools are available to build documentation.
 if [ -x "`which texi2html 2>/dev/null`" ] && \
    [ -x "`which pod2man 2>/dev/null`" ]; then
@@ -1137,6 +1163,7 @@ if test "$sdl" != "no" ; then
     echo "SDL static link   $sdl_static"
 fi
 echo "curses support    $curses"
+echo "atfile support    $atfile"
 echo "mingw32 support   $mingw32"
 echo "Audio drivers     $audio_drv_list"
 echo "Extra audio cards $audio_card_list"
@@ -1429,6 +1456,9 @@ if test "$curses" = "yes" ; then
   echo "CONFIG_CURSES=yes" >> $config_mak
   echo "CURSES_LIBS=-lcurses" >> $config_mak
 fi
+if test "$atfile" = "yes" ; then
+  echo "#define CONFIG_ATFILE 1" >> $config_h
+fi
 if test "$brlapi" = "yes" ; then
   echo "CONFIG_BRLAPI=yes" >> $config_mak
   echo "#define CONFIG_BRLAPI 1" >> $config_h