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-rw-r--r--m4/spice-deps.m45
1 files changed, 5 insertions, 0 deletions
diff --git a/m4/spice-deps.m4 b/m4/spice-deps.m4
index df35a92..68dec42 100644
--- a/m4/spice-deps.m4
+++ b/m4/spice-deps.m4
@@ -1,3 +1,8 @@
+# For autoconf < 2.63
+m4_ifndef([AS_VAR_APPEND],
+ AC_DEFUN([AS_VAR_APPEND], $1=$$1$2))
+
+
# SPICE_CHECK_SYSDEPS()
# ---------------------
# Checks for header files and library functions needed by spice-common.