From 5e0e0e9bcc71fdb6238f5b90ef13118bca8055e0 Mon Sep 17 00:00:00 2001
From: mpwaser <47316116+mpwaser@users.noreply.github.com>
Date: Thu, 9 Jul 2026 14:51:59 +0200
Subject: [PATCH 1/3] Show Windows ARM64 CTest failure output

---
 .github/workflows/windows_arm64.yml | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/windows_arm64.yml b/.github/workflows/windows_arm64.yml
index 811c1fb7d4..9f2c2d3b4a 100644
--- a/.github/workflows/windows_arm64.yml
+++ b/.github/workflows/windows_arm64.yml
@@ -85,6 +85,13 @@ jobs:
         run: |
           $env:PATH = "C:\opt\bin;$env:PATH"
           cd build
-          ctest
-
+          ctest --output-on-failure
+          $ctestExitCode = $LASTEXITCODE
+          if ($ctestExitCode -ne 0) {
+            if (Test-Path "Testing/Temporary/LastTest.log") {
+              Write-Host "===== Testing/Temporary/LastTest.log ====="
+              Get-Content "Testing/Temporary/LastTest.log"
+            }
+            exit $ctestExitCode
+          }
 

From 59218f3bf76038b0358e90cfe9b74ee20863d37a Mon Sep 17 00:00:00 2001
From: mpwaser <47316116+mpwaser@users.noreply.github.com>
Date: Thu, 9 Jul 2026 18:43:58 +0200
Subject: [PATCH 2/3] Build Windows ARM64 CI statically

---
 .github/workflows/windows_arm64.yml | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/windows_arm64.yml b/.github/workflows/windows_arm64.yml
index 9f2c2d3b4a..6488039a02 100644
--- a/.github/workflows/windows_arm64.yml
+++ b/.github/workflows/windows_arm64.yml
@@ -57,13 +57,15 @@ jobs:
           
           mkdir build
           cd build
+          REM Use a static OpenBLAS build so openblas_utest_ext can use its test-local xerbla handler.
           cmake .. -G Ninja ^
             -DCMAKE_BUILD_TYPE=Release ^
             -DTARGET=ARMV8 ^
             -DBINARY=64 ^
             -DCMAKE_C_COMPILER=clang-cl ^
             -DCMAKE_Fortran_COMPILER=flang-new ^
-            -DBUILD_SHARED_LIBS=ON ^
+            -DBUILD_STATIC_LIBS=ON ^
+            -DBUILD_SHARED_LIBS=OFF ^
             -DCMAKE_SYSTEM_PROCESSOR=arm64 ^
             -DCMAKE_SYSTEM_NAME=Windows ^
             -DCMAKE_INSTALL_PREFIX=C:/opt
@@ -85,13 +87,4 @@ jobs:
         run: |
           $env:PATH = "C:\opt\bin;$env:PATH"
           cd build
-          ctest --output-on-failure
-          $ctestExitCode = $LASTEXITCODE
-          if ($ctestExitCode -ne 0) {
-            if (Test-Path "Testing/Temporary/LastTest.log") {
-              Write-Host "===== Testing/Temporary/LastTest.log ====="
-              Get-Content "Testing/Temporary/LastTest.log"
-            }
-            exit $ctestExitCode
-          }
-
+          ctest

From 7f6319951f98d6abd1cf31c98d6a84be8f3e8b1c Mon Sep 17 00:00:00 2001
From: mpwaser <47316116+mpwaser@users.noreply.github.com>
Date: Thu, 9 Jul 2026 18:49:31 +0200
Subject: [PATCH 3/3] Document Windows ARM64 static CI build

---
 .github/workflows/windows_arm64.yml | 2 +-
 docs/ci.md                          | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/windows_arm64.yml b/.github/workflows/windows_arm64.yml
index 6488039a02..9d846752e9 100644
--- a/.github/workflows/windows_arm64.yml
+++ b/.github/workflows/windows_arm64.yml
@@ -57,7 +57,7 @@ jobs:
           
           mkdir build
           cd build
-          REM Use a static OpenBLAS build so openblas_utest_ext can use its test-local xerbla handler.
+          REM Build static so openblas_utest_ext can use its test-local xerbla handler during CTest.
           cmake .. -G Ninja ^
             -DCMAKE_BUILD_TYPE=Release ^
             -DTARGET=ARMV8 ^
diff --git a/docs/ci.md b/docs/ci.md
index 37ea26ff92..4b574111ad 100644
--- a/docs/ci.md
+++ b/docs/ci.md
@@ -33,6 +33,7 @@
 | arm64       |Apple M1   |macOS26|gmake      |x86_64| XCode| - | | + | - | both | Github |   |
 | arm64       |Apple M1   |macOS26|gmake      |arm64| XCode| - | | + | - | both | Github |   |
 | arm64       |Apple M1   |macOS26|gmake      |arm| AndroidNDK-llvm | - | | - | - | both | Github |   |
+| arm64       |ARMV8      |Windows11|CMAKE/Ninja| - |LLVM clang-cl|flang-new| | - | - | static | Github | |
 | arm64       |Neoverse N1|Linux  |gmake      | -    |gcc|gfortran| pthreads| - | - | both   | Github |   |
 | arm64       |Neoverse N1|Linux  |gmake      | -    |gcc|gfortran| pthreads| - | + | both   | Github |  |
 | arm64       |Neoverse N1|Linux  |gmake      |-     |gcc|gfortran| OpenMP | - | - | both   | Github |  |
@@ -64,3 +65,6 @@
 | x86_64      |C910V|QEmu         |gmake      |riscv64|gcc|gfortran|pthreads|-|-|both|Github| |
 |power        |pwr9| Ubuntu        |gmake      | - |gcc|gfortran|OpenMP|-|-|both|OSUOSL|  |
 |zarch        |z14 | Ubuntu        |gmake      | - |gcc|gfortran|OpenMP|-|-|both|OSUOSL|  |
+
+The Windows ARM64 CMake job builds OpenBLAS statically so `openblas_utest_ext`
+can use its test-local `xerbla` handler during CTest.