[Spice-devel] [spice-common 13/13] build-sys: Add fallback for AS_VAR_APPEND

[Christophe Fergeau]

This macro is not available with RHEL6 autoconf.
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index e5c4021..d8c73f6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,10 @@ AC_CONFIG_AUX_DIR([build-aux])
 # For automake >= 1.12
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 
+# For autoconf <= 2.63
+m4_ifndef([AS_VAR_APPEND],
+          AC_DEFUN([AS_VAR_APPEND], $1=$$1$2))
+
 # Checks for programs
 AM_INIT_AUTOMAKE([1.11 dist-xz no-dist-gzip tar-ustar foreign -Wall -Werror])
 AM_MAINTAINER_MODE
-- 
2.1.0