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-rw-r--r--gr-video-sdl/src/Makefile.am4
1 files changed, 2 insertions, 2 deletions
diff --git a/gr-video-sdl/src/Makefile.am b/gr-video-sdl/src/Makefile.am
index 9692be3df..ba7572499 100644
--- a/gr-video-sdl/src/Makefile.am
+++ b/gr-video-sdl/src/Makefile.am
@@ -59,10 +59,10 @@ TOP_SWIG_IFILES = \
TOP_SWIG_DOC_IFILES = \
video_sdl_swig_doc.i
-BUILT_SOURCES = \
+BUILT_SOURCES += \
$(TOP_SWIG_DOC_IFILES)
-$(BUILT_SOURCES):
+$(TOP_SWIG_DOC_IFILES):
`echo "" > $@`
# Install so that they end up available as: