Configure MSBuild debug path and save any logs

We have had many problems in the CI with MSBuild failing, and not
capturing the failure logs.

See https://github.com/dotnet/coreclr/issues/20236.

So, for all msbuild invocations, set MSBUILDDEBUGPATH to a new,
distinguished, subdirectory of the bin\Logs directory, named
"MsbuildDebugLogs". Change the CI to upload any log files found
there.

1 files changed, 5 insertions, 0 deletions

diff --git a/build.sh b/build.sh
index 536dbe8f5b..ef50b3e8af 100755
--- a/build.sh
+++ b/build.sh
@@ -140,6 +140,7 @@ setup_dirs()
     mkdir -p "$__RootBinDir"
     mkdir -p "$__BinDir"
     mkdir -p "$__LogsDir"
+    mkdir -p "$__MsbuildDebugLogsDir"
     mkdir -p "$__IntermediatesDir"
 
     if [ $__CrossBuild == 1 ]; then
@@ -996,6 +997,7 @@ fi
 
 # Set dependent variables
 __LogsDir="$__RootBinDir/Logs"
+__MsbuildDebugLogsDir="$__LogsDir/MsbuildDebugLogs"
 
 # init the host distro name
 initHostDistroRid
@@ -1047,6 +1049,9 @@ initTargetDistroRid
 # Make the directories necessary for build if they don't exist
 setup_dirs
 
+# Set up the directory for MSBuild debug logs.
+export MSBUILDDEBUGPATH="${__MsbuildDebugLogsDir}"
+
 # Check prereqs.
 check_prereqs