From 8241578dbf5891f30eba4421c572154023f97214 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jack=C2=B7Boos=C2=B7Yu?=
 <47264268+JackBoosY@users.noreply.github.com>
Date: Wed, 4 Mar 2020 01:37:49 +0800
Subject: [PATCH] Fix log write failure when installing port for the first time
 (#10287)

---
 toolsrc/src/vcpkg/build.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/toolsrc/src/vcpkg/build.cpp b/toolsrc/src/vcpkg/build.cpp
index 93b12f391b..f6c310415c 100644
--- a/toolsrc/src/vcpkg/build.cpp
+++ b/toolsrc/src/vcpkg/build.cpp
@@ -525,8 +525,14 @@ namespace vcpkg::Build
 #else
         const auto& env = System::get_clean_environment();
 #endif
-        auto stdoutlog =
-            paths.buildtrees / action.spec.name() / ("stdout-" + action.spec.triplet().canonical_name() + ".log");
+        auto buildpath = paths.buildtrees / action.spec.name();
+        if (!fs.exists(buildpath))
+        {
+            std::error_code err;
+            fs.create_directory(buildpath, err);
+            Checks::check_exit(VCPKG_LINE_INFO, !err.value(), "Failed to create directory '%s', code: %d", buildpath.u8string(), err.value());
+        }
+        auto stdoutlog = buildpath / ("stdout-" + action.spec.triplet().canonical_name() + ".log");
         std::ofstream out_file(stdoutlog.native().c_str(), std::ios::out | std::ios::binary | std::ios::trunc);
         Checks::check_exit(VCPKG_LINE_INFO, out_file, "Failed to open '%s' for writing", stdoutlog.u8string());
         const int return_code = System::cmd_execute_and_stream_data(