[gtk-doc: 2/2] Merge branch 'tintou/cmake-no-dup-flags' into 'master'

[Stefan Sauer <stefkost src gnome org>]

commit 16187aabb37a283a0ae7f916ea612ccb805a8dd1
Merge: 8e47e3f 0a7a1a8
Author: Stefan Sauer <ensonic hora-obscura de>
Date:   Sun Mar 31 10:49:48 2019 +0000

    Merge branch 'tintou/cmake-no-dup-flags' into 'master'
    
    cmake: Avoid duplicate flags
    
    See merge request GNOME/gtk-doc!24

 buildsystems/cmake/GtkDocConfig.cmake | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --cc buildsystems/cmake/GtkDocConfig.cmake
index ea77ab4,c26e679..e6815a0
--- a/buildsystems/cmake/GtkDocConfig.cmake
+++ b/buildsystems/cmake/GtkDocConfig.cmake
@@@ -158,8 -158,17 +158,17 @@@ function(gtk_doc_add_module _doc_prefix
          list(APPEND _extra_ldpath ${library_dir})
      endforeach()
  
+     list(REMOVE_DUPLICATES _extra_cflags)
+     list(SORT _extra_cflags)
+ 
+     list(REMOVE_DUPLICATES _extra_ldflags)
+     list(SORT _extra_ldflags)
+ 
+     list(REMOVE_DUPLICATES _extra_ldpath)
+     list(SORT _extra_ldpath)
+ 
      # a directory to store output.
 -    set(_output_dir "${CMAKE_CURRENT_BINARY_DIR}/${_doc_prefix}")
 +    set(_output_dir "${CMAKE_CURRENT_BINARY_DIR}")
      set(_output_dir_stamp "${_output_dir}/dir.stamp")
  
      # set default sgml file if not specified