X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=daemon%2Fconfigure.ac;h=243f353a6779de20ffc5218e66c2684eb24e94be;hp=2fd1ae93397de0f14a788208250799fc55be8408;hb=25c4b0190c22e3bdc5594aff994c8e8f99db5ab3;hpb=2600359b9b520ab386f069fbbcd656e5cdbd9b76

diff --git a/daemon/configure.ac b/daemon/configure.ac
index 2fd1ae9..243f353 100644
--- a/daemon/configure.ac
+++ b/daemon/configure.ac
@@ -65,8 +65,24 @@ AC_CHECK_LIB([portablexdr],[xdrmem_create],[],[
 dnl Functions which may not be available in older distributions.
 AC_CHECK_FUNCS([futimens listxattr llistxattr getxattr lgetxattr setxattr lsetxattr removexattr lremovexattr])
 
+dnl For modified printf, we need glibc either (old-style)
+dnl register_printf_function or (new-style) register_printf_specifier.
+AC_CHECK_FUNC([register_printf_specifier],[
+	AC_DEFINE([HAVE_REGISTER_PRINTF_SPECIFIER],[1],
+		[Define to 1 if you have new-style register_printf_specifier])
+	],[
+	AC_CHECK_FUNC([register_printf_function],[
+		AC_DEFINE([HAVE_REGISTER_PRINTF_FUNCTION],[1],
+			[Define to 1 if you have old-style register_printf_function])
+		],[
+		AC_MSG_FAILURE(
+[No support for glibc-style extended printf formatters.
+
+This means you either have a very old glibc (pre-2.0) or you
+are using some other libc where this is not supported.])])])
+
 dnl Headers.
-AC_CHECK_HEADERS([attr/xattr.h])
+AC_CHECK_HEADERS([attr/xattr.h sys/xattr.h])
 
 dnl Produce output files.
 AC_CONFIG_HEADERS([config.h])