From 64b61c7c4da1bb5f38becb857c712a3233b2c9c4 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Thu, 10 Sep 2020 15:36:36 +0200
Subject: CMake: Don't compile image-msgpack.c if library is not found

---
 libcrystfel/CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libcrystfel/CMakeLists.txt b/libcrystfel/CMakeLists.txt
index 7c8bd82b..2b43b024 100644
--- a/libcrystfel/CMakeLists.txt
+++ b/libcrystfel/CMakeLists.txt
@@ -59,7 +59,6 @@ set(LIBCRYSTFEL_SOURCES
     src/detgeom.c
     src/image-cbf.c
     src/image-hdf5.c
-    src/image-msgpack.c
     ${BISON_symopp_OUTPUTS}
     ${FLEX_symopl_OUTPUTS}
     src/indexers/dirax.c
@@ -100,6 +99,10 @@ set(LIBCRYSTFEL_HEADERS
     src/image-msgpack.h
 )
 
+if (MSGPACK_FOUND)
+  set(LIBCRYSTFEL_SOURCES ${LIBCRYSTFEL_SOURCES} src/image-msgpack.c)
+endif (MSGPACK_FOUND)
+
 if (DOXYGEN_FOUND)
   configure_file(${PROJECT_SOURCE_DIR}/doc/index.md index.md)
   set(DOXYGEN_SHOW_INCLUDE_FILES NO)
-- 
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