[GNUnet-SVN] [gnurl] 18/219: cmake: don't run SORT on empty list

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ng0 pushed a commit to branch master
in repository gnurl.

commit 1a3aa5c32117e94d8838c8ec85a68e8ae83898c5
Author: Simon Warta <address@hidden>
AuthorDate: Sat Apr 6 15:05:50 2019 +0200

    cmake: don't run SORT on empty list
    
    In case of an empty list, SORTing leads to the cmake error "list
    sub-command SORT requires list to be present."
    
    Closes https://github.com/curl/curl/pull/3736
---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index edb1cec21..6f513c2bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1239,7 +1239,9 @@ _add_if("SCP"           USE_LIBSSH2)
 _add_if("SFTP"          USE_LIBSSH2)
 _add_if("RTSP"          NOT CURL_DISABLE_RTSP)
 _add_if("RTMP"          USE_LIBRTMP)
-list(SORT _items)
+if(_items)
+  list(SORT _items)
+endif()
 string(REPLACE ";" " " SUPPORT_PROTOCOLS "${_items}")
 message(STATUS "Enabled protocols: ${SUPPORT_PROTOCOLS}")
 

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