From f9ee8fd6b5764ed4d2f5a6c71a092d70398f4ead Mon Sep 17 00:00:00 2001
From: Robert Schumacher <roschuma@microsoft.com>
Date: Thu, 8 Mar 2018 11:12:22 -0800
Subject: [PATCH] [soundtouch][winpcap] Clear sources between builds to improve
 reliability

---
 ports/soundtouch/portfile.cmake | 3 +++
 ports/winpcap/portfile.cmake    | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/ports/soundtouch/portfile.cmake b/ports/soundtouch/portfile.cmake
index 42c055312..cadf5e705 100644
--- a/ports/soundtouch/portfile.cmake
+++ b/ports/soundtouch/portfile.cmake
@@ -19,6 +19,9 @@ vcpkg_download_distfile(ARCHIVE
     SHA512 50ef36b6cd21c16e235b908c5518e29b159b11f658a014c47fe767d3d8acebaefefec0ce253b4ed322cbd26387c69c0ed464ddace0c098e61d56d55c198117a5
 )
 
+# MSBuild performs in-source builds, so to ensure reliability we must clear them each time
+file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/src)
+
 vcpkg_extract_source_archive(${ARCHIVE})
 
 vcpkg_execute_required_process(
diff --git a/ports/winpcap/portfile.cmake b/ports/winpcap/portfile.cmake
index 05b0a2c83..701c9892e 100644
--- a/ports/winpcap/portfile.cmake
+++ b/ports/winpcap/portfile.cmake
@@ -17,6 +17,10 @@ vcpkg_download_distfile(ARCHIVE
     FILENAME "WpcapSrc_4_1_3.zip"
     SHA512 89a5109ed17f8069f7a43497f6fec817c58620dbc5fa506e52069b9113c5bc13f69c307affe611281cb727cfa0f8529d07044d41427e350b24468ccc89a87f33
 )
+
+# MSBuild performs in-source builds, so to ensure reliability we must clear them each time
+file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/src)
+
 vcpkg_extract_source_archive(${ARCHIVE})
 
 if(VCPKG_CRT_LINKAGE STREQUAL "static")