Apply a patch from upstream to (hopefully) fix a race in documentation

builds.

PR:		213619
Reported by:	many

3 files changed, 78 insertions, 0 deletions

diff --git a/devel/llvm37/files/patch-svn-283188 b/devel/llvm37/files/patch-svn-283188
new file mode 100644
index 000000000000..43f29670192b
--- /dev/null
+++ b/devel/llvm37/files/patch-svn-283188
@@ -0,0 +1,26 @@
+------------------------------------------------------------------------
+r283188 | mgorny | 2016-10-04 06:09:14 +0000 (Tue, 04 Oct 2016) | 9 lines
+
+[cmake] Use separate doctrees to prevent races between Sphinx instances
+
+Use separate doctrees between different Sphinx builders in order to
+prevent race condition issues due to multiple Sphinx instances accessing
+the same doctree cache in parallel.
+
+Bug: https://llvm.org/bugs/show_bug.cgi?id=23781
+
+Differential Revision: https://reviews.llvm.org/D23755
+------------------------------------------------------------------------
+Index: cmake/modules/AddSphinxTarget.cmake
+===================================================================
+--- cmake/modules/AddSphinxTarget.cmake	(revision 283187)
++++ cmake/modules/AddSphinxTarget.cmake	(revision 283188)
+@@ -6,7 +6,7 @@
+ # ``project`` should be the project name
+ function (add_sphinx_target builder project)
+   set(SPHINX_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}/${builder}")
+-  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees")
++  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees-${builder}")
+   set(SPHINX_TARGET_NAME docs-${project}-${builder})
+ 
+   if (SPHINX_WARNINGS_AS_ERRORS)
diff --git a/devel/llvm38/files/patch-svn-283188 b/devel/llvm38/files/patch-svn-283188
new file mode 100644
index 000000000000..43f29670192b
--- /dev/null
+++ b/devel/llvm38/files/patch-svn-283188
@@ -0,0 +1,26 @@
+------------------------------------------------------------------------
+r283188 | mgorny | 2016-10-04 06:09:14 +0000 (Tue, 04 Oct 2016) | 9 lines
+
+[cmake] Use separate doctrees to prevent races between Sphinx instances
+
+Use separate doctrees between different Sphinx builders in order to
+prevent race condition issues due to multiple Sphinx instances accessing
+the same doctree cache in parallel.
+
+Bug: https://llvm.org/bugs/show_bug.cgi?id=23781
+
+Differential Revision: https://reviews.llvm.org/D23755
+------------------------------------------------------------------------
+Index: cmake/modules/AddSphinxTarget.cmake
+===================================================================
+--- cmake/modules/AddSphinxTarget.cmake	(revision 283187)
++++ cmake/modules/AddSphinxTarget.cmake	(revision 283188)
+@@ -6,7 +6,7 @@
+ # ``project`` should be the project name
+ function (add_sphinx_target builder project)
+   set(SPHINX_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}/${builder}")
+-  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees")
++  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees-${builder}")
+   set(SPHINX_TARGET_NAME docs-${project}-${builder})
+ 
+   if (SPHINX_WARNINGS_AS_ERRORS)
diff --git a/devel/llvm39/files/patch-svn-283188 b/devel/llvm39/files/patch-svn-283188
new file mode 100644
index 000000000000..43f29670192b
--- /dev/null
+++ b/devel/llvm39/files/patch-svn-283188
@@ -0,0 +1,26 @@
+------------------------------------------------------------------------
+r283188 | mgorny | 2016-10-04 06:09:14 +0000 (Tue, 04 Oct 2016) | 9 lines
+
+[cmake] Use separate doctrees to prevent races between Sphinx instances
+
+Use separate doctrees between different Sphinx builders in order to
+prevent race condition issues due to multiple Sphinx instances accessing
+the same doctree cache in parallel.
+
+Bug: https://llvm.org/bugs/show_bug.cgi?id=23781
+
+Differential Revision: https://reviews.llvm.org/D23755
+------------------------------------------------------------------------
+Index: cmake/modules/AddSphinxTarget.cmake
+===================================================================
+--- cmake/modules/AddSphinxTarget.cmake	(revision 283187)
++++ cmake/modules/AddSphinxTarget.cmake	(revision 283188)
+@@ -6,7 +6,7 @@
+ # ``project`` should be the project name
+ function (add_sphinx_target builder project)
+   set(SPHINX_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}/${builder}")
+-  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees")
++  set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees-${builder}")
+   set(SPHINX_TARGET_NAME docs-${project}-${builder})
+ 
+   if (SPHINX_WARNINGS_AS_ERRORS)