1 files changed, 7 insertions, 1 deletions
diff --git a/m4/zstd.m4 b/m4/zstd.m4
index f644264..37a7f35 100644
--- a/m4/zstd.m4
+++ b/m4/zstd.m4
@@ -1,11 +1,17 @@
 AC_DEFUN([AC_TEST_ZSTD_STREAM], [
 	AC_MSG_CHECKING([whether zstd supports stream compression])
 	AC_LANG_PUSH([C])
+	ac_zstd_have_stream="no"
 	ac_zstd_save_CFLAGS="$CFLAGS"
 	CFLAGS="$CFLAGS $ZSTD_CFLAGS"
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <zstd.h>], [ZSTD_EndDirective op = ZSTD_e_end; ZSTD_compressStream2(NULL, NULL, NULL, op);])],
-			  AC_DEFINE(HAVE_ZSTD_STREAM, 1, [Does zstd support stream compression?])
+			  ac_zstd_have_stream="yes"
 			  AC_MSG_RESULT([yes]), AC_MSG_RESULT([no]))
+
+        AS_IF([test "x$ac_zstd_have_stream" = "xyes"],
+		[AC_DEFINE(HAVE_ZSTD_STREAM, 1, [Does zstd support stream compression?])])
+
+	AM_CONDITIONAL([HAVE_ZSTD_STREAM], [test "x$ac_zstd_have_stream" = "xyes"])
 	CFLAGS=$ac_zstd_save_CFLAGS
 	AC_LANG_POP([C])
 ])