From 93ceb1a9933657d732faedc616bc5d0c85f94df4 Mon Sep 17 00:00:00 2001
From: JackBoosY <47264268+JackBoosY@users.noreply.github.com>
Date: Wed, 29 May 2019 15:11:06 +0800
Subject: [PATCH] [llvm]Fix build error on x64-windows. (#6631)

---
 ports/llvm/CONTROL               |  2 +-
 ports/llvm/fix-build-error.patch | 16 ++++++++++++++++
 ports/llvm/portfile.cmake        |  4 +++-
 3 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 ports/llvm/fix-build-error.patch

diff --git a/ports/llvm/CONTROL b/ports/llvm/CONTROL
index d4e631680f548e..1bc8335fc08477 100644
--- a/ports/llvm/CONTROL
+++ b/ports/llvm/CONTROL
@@ -1,4 +1,4 @@
 Source: llvm
-Version: 7.0.0-2
+Version: 7.0.0-3
 Description: The LLVM Compiler Infrastructure
 Build-Depends: atlmfc (windows)
diff --git a/ports/llvm/fix-build-error.patch b/ports/llvm/fix-build-error.patch
new file mode 100644
index 00000000000000..a311fb959f9dd4
--- /dev/null
+++ b/ports/llvm/fix-build-error.patch
@@ -0,0 +1,16 @@
+diff --git a/tools/clang/tools/libclang/CMakeLists.txt b/tools/clang/tools/libclang/CMakeLists.txt
+index e539c83..09c1ea3 100644
+--- a/tools/clang/tools/libclang/CMakeLists.txt
++++ b/tools/clang/tools/libclang/CMakeLists.txt
+@@ -56,10 +56,7 @@ if (TARGET clangTidyPlugin)
+   endif()
+ endif ()
+ 
+-find_library(DL_LIBRARY_PATH dl)
+-if (DL_LIBRARY_PATH)
+-  list(APPEND LIBS dl)
+-endif()
++list(APPEND LIBS "${DL_LIBRARY_PATH}")
+ 
+ option(LIBCLANG_BUILD_STATIC
+   "Build libclang as a static library (in addition to a shared one)" OFF)
diff --git a/ports/llvm/portfile.cmake b/ports/llvm/portfile.cmake
index a471ec1aeb1e77..1828ea86e6c355 100644
--- a/ports/llvm/portfile.cmake
+++ b/ports/llvm/portfile.cmake
@@ -28,7 +28,9 @@ endif()
 
 vcpkg_apply_patches(
     SOURCE_PATH ${SOURCE_PATH}
-    PATCHES ${CMAKE_CURRENT_LIST_DIR}/install-cmake-modules-to-share.patch
+    PATCHES 
+            install-cmake-modules-to-share.patch
+            fix-build-error.patch
 )
 
 vcpkg_find_acquire_program(PYTHON3)