From a7322bdd5e0d3ee57c90029de2fcdfed0efe2a9a Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Wed, 29 Oct 2025 16:32:00 +0100
Subject: [PATCH] configure: fix adding DELTA_INC

:+ instead of :- (if not empty, actually appended _without_ the space)

commit 3f9fe348 (2025-10-23)
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 9602bd5b9..7a9529a4d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1182,7 +1182,7 @@ if test "$deltacast_req" != no; then
                 fi
         fi
         if test "$deltacast_found" = yes; then
-                INC="$INC${DELTA_INC:- $DELTA_INC}"
+                INC="$INC${DELTA_INC:+ $DELTA_INC}"
                 add_module vidcap_deltacast "src/deltacast_common.o \
 src/video_capture/deltacast.o src/video_capture/deltacast_dvi.o" "$DELTACAST_LIB"
                 add_module display_deltacast "src/deltacast_common.o \