8 files changed, 41 insertions, 6 deletions
diff --git a/sys-devel/llvm/files/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch b/sys-devel/llvm/files/3.8.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
index 94a81574d6ee..94a81574d6ee 100644
--- a/sys-devel/llvm/files/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+++ b/sys-devel/llvm/files/3.8.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
diff --git a/sys-devel/llvm/files/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch b/sys-devel/llvm/files/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch
new file mode 100644
index 000000000000..1e01e640b3dc
--- /dev/null
+++ b/sys-devel/llvm/files/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch
@@ -0,0 +1,35 @@
+From 40960f63616f62c8ac52eeeddf68bdb441b8be3e Mon Sep 17 00:00:00 2001
+From: Michal Gorny <mgorny@gentoo.org>
+Date: Tue, 4 Oct 2016 06:09:14 +0000
+Subject: [PATCH] [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
+
+git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283188 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ cmake/modules/AddSphinxTarget.cmake | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cmake/modules/AddSphinxTarget.cmake b/cmake/modules/AddSphinxTarget.cmake
+index a968555aa06..ca9f4c38ffd 100644
+--- a/cmake/modules/AddSphinxTarget.cmake
++++ b/cmake/modules/AddSphinxTarget.cmake
+@@ -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)
+-- 
+2.11.0
+
diff --git a/sys-devel/llvm/llvm-3.7.1-r3.ebuild b/sys-devel/llvm/llvm-3.7.1-r3.ebuild
index b1e9ceb1ddc4..edebcba3c61e 100644
--- a/sys-devel/llvm/llvm-3.7.1-r3.ebuild
+++ b/sys-devel/llvm/llvm-3.7.1-r3.ebuild
@@ -167,7 +167,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.8.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
 
 	# Prevent installing libgtest
 	# https://llvm.org/bugs/show_bug.cgi?id=18341
diff --git a/sys-devel/llvm/llvm-3.8.1-r2.ebuild b/sys-devel/llvm/llvm-3.8.1-r2.ebuild
index 5ba7822d0e65..fd640fc15259 100644
--- a/sys-devel/llvm/llvm-3.8.1-r2.ebuild
+++ b/sys-devel/llvm/llvm-3.8.1-r2.ebuild
@@ -167,7 +167,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.8.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
 
 	# Prevent installing libgtest
 	# https://llvm.org/bugs/show_bug.cgi?id=18341
diff --git a/sys-devel/llvm/llvm-3.8.1.ebuild b/sys-devel/llvm/llvm-3.8.1.ebuild
index dcc83531c0d2..86a8fe9e685a 100644
--- a/sys-devel/llvm/llvm-3.8.1.ebuild
+++ b/sys-devel/llvm/llvm-3.8.1.ebuild
@@ -168,7 +168,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.8.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
 
 	# Prevent installing libgtest
 	# https://llvm.org/bugs/show_bug.cgi?id=18341
diff --git a/sys-devel/llvm/llvm-3.9.0-r1.ebuild b/sys-devel/llvm/llvm-3.9.0-r1.ebuild
index 814931bd5b3b..f33c557a99af 100644
--- a/sys-devel/llvm/llvm-3.9.0-r1.ebuild
+++ b/sys-devel/llvm/llvm-3.9.0-r1.ebuild
@@ -178,7 +178,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch
 
 	# Allow custom cmake build types (like 'Gentoo')
 	eapply "${FILESDIR}"/3.9.1/0006-cmake-Remove-the-CMAKE_BUILD_TYPE-assertion.patch
diff --git a/sys-devel/llvm/llvm-3.9.1-r1.ebuild b/sys-devel/llvm/llvm-3.9.1-r1.ebuild
index 20bee28c2882..5bae5d3b965f 100644
--- a/sys-devel/llvm/llvm-3.9.1-r1.ebuild
+++ b/sys-devel/llvm/llvm-3.9.1-r1.ebuild
@@ -178,7 +178,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch
 
 	# Allow custom cmake build types (like 'Gentoo')
 	eapply "${FILESDIR}"/3.9.1/0006-cmake-Remove-the-CMAKE_BUILD_TYPE-assertion.patch
diff --git a/sys-devel/llvm/llvm-3.9.1.ebuild b/sys-devel/llvm/llvm-3.9.1.ebuild
index 6fbfcd881720..c24c19f7b5f0 100644
--- a/sys-devel/llvm/llvm-3.9.1.ebuild
+++ b/sys-devel/llvm/llvm-3.9.1.ebuild
@@ -178,7 +178,7 @@ src_prepare() {
 
 	# Prevent race conditions with parallel Sphinx runs
 	# https://llvm.org/bugs/show_bug.cgi?id=23781
-	eapply "${FILESDIR}"/3.9.1/0004-cmake-Add-an-ordering-dep-between-HTML-man-Sphinx-ta.patch
+	eapply "${FILESDIR}"/3.9.1/0004-cmake-Use-separate-doctrees-to-prevent-races-between.patch
 
 	# Allow custom cmake build types (like 'Gentoo')
 	eapply "${FILESDIR}"/3.9.1/0006-cmake-Remove-the-CMAKE_BUILD_TYPE-assertion.patch