diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index 4625e5c..2114fe7 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-android:
+    if: false
     name: NDK-C++${{matrix.std}}-${{matrix.abi}}-${{matrix.build_type}}
     runs-on: ubuntu-22.04
     permissions:
diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index edb0949..f40d0c3 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -2,6 +2,7 @@ name: CIFuzz
 on: [pull_request]
 jobs:
   Fuzzing:
+    if: false
     runs-on: ubuntu-latest
     steps:
     - name: Build Fuzzers
diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index 90125f0..064a92a 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-linux:
+    if: false
     defaults:
       run:
         shell: bash
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index ac2b490..3a8544e 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-linux:
+    if: false
     defaults:
       run:
         shell: bash
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 7fc2966..833b59b 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-macos:
+    if: false
     name: AppleClang-C++${{matrix.std}}-${{matrix.build_type}}
     runs-on: macos-12
     permissions:
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index ab3ea94..2bb3841 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-msvc:
+    if: false
     name: ${{matrix.msvc}}-${{matrix.arch}}-C++${{matrix.std}}-${{matrix.build_type}}-${{matrix.lib}}
     runs-on: ${{matrix.os}}
     permissions:
@@ -157,11 +158,9 @@ jobs:
         build_type: [Debug]
         lib: [shared, static]
         std: [14, 17, 20, 23]
-        sys: [mingw32, mingw64]
+        sys: [msys]
         include:
-         - sys: mingw32
-           env: i686
-         - sys: mingw64
+         - sys: msys
            env: x86_64
 
     steps:
@@ -173,6 +172,21 @@ jobs:
           languages: cpp
 
       - uses: msys2/setup-msys2@v2
+        if: ${{matrix.sys == 'msys'}}
+        with:
+          msystem: ${{matrix.sys}}
+          install: >-
+            cmake
+            gcc
+            gtest
+            ninja
+            python-jinja
+            python-lxml
+            python-pip
+            python-pygments
+
+      - uses: msys2/setup-msys2@v2
+        if: ${{matrix.sys != 'msys'}}
         with:
           msystem: ${{matrix.sys}}
           install: >-
diff --git a/src/cleanup_immediately_unittest.cc b/src/cleanup_immediately_unittest.cc
index 5d97006..ed6d972 100644
--- a/src/cleanup_immediately_unittest.cc
+++ b/src/cleanup_immediately_unittest.cc
@@ -27,6 +27,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#define _XOPEN_SOURCE 500
+
 #include "base/commandlineflags.h"
 #include "glog/logging.h"
 #include "glog/raw_logging.h"
diff --git a/src/cleanup_with_absolute_prefix_unittest.cc b/src/cleanup_with_absolute_prefix_unittest.cc
index 8b9e243..0b81e94 100644
--- a/src/cleanup_with_absolute_prefix_unittest.cc
+++ b/src/cleanup_with_absolute_prefix_unittest.cc
@@ -27,6 +27,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#define _XOPEN_SOURCE 500
+
 #include "base/commandlineflags.h"
 #include "glog/logging.h"
 #include "glog/raw_logging.h"
diff --git a/src/cleanup_with_relative_prefix_unittest.cc b/src/cleanup_with_relative_prefix_unittest.cc
index 3d9ef33..63b99fb 100644
--- a/src/cleanup_with_relative_prefix_unittest.cc
+++ b/src/cleanup_with_relative_prefix_unittest.cc
@@ -27,6 +27,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#define _XOPEN_SOURCE 500
+
 #include "base/commandlineflags.h"
 #include "glog/logging.h"
 #include "glog/raw_logging.h"
diff --git a/src/demangle_unittest.cc b/src/demangle_unittest.cc
index a851664..a0f93b9 100644
--- a/src/demangle_unittest.cc
+++ b/src/demangle_unittest.cc
@@ -31,6 +31,8 @@
 //
 // Unit tests for functions in demangle.c.
 
+#define _XOPEN_SOURCE 500
+
 #include "demangle.h"
 
 #include <fstream>
diff --git a/src/logging.cc b/src/logging.cc
index 8fc5bd9..100f434 100644
--- a/src/logging.cc
+++ b/src/logging.cc
@@ -28,6 +28,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define _GNU_SOURCE 1  // needed for O_NOFOLLOW and pread()/pwrite()
+#define _POSIX_C_SOURCE 1
 
 #include "glog/logging.h"
 
diff --git a/src/logging_unittest.cc b/src/logging_unittest.cc
index 74d6f41..d54fd5f 100644
--- a/src/logging_unittest.cc
+++ b/src/logging_unittest.cc
@@ -29,24 +29,15 @@
 //
 // Author: Ray Sidney
 
-#include <fcntl.h>
+#define _POSIX_C_SOURCE 200112L
+#define _XOPEN_SOURCE 500
 
-#include "config.h"
-#include "utilities.h"
-#ifdef HAVE_GLOB_H
-#  include <glob.h>
-#endif
-#include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
-#  include <unistd.h>
-#endif
-#ifdef HAVE_SYS_WAIT_H
-#  include <sys/wait.h>
-#endif
+#include <fcntl.h>
 
 #include <chrono>
 #include <cstdio>
 #include <cstdlib>
+#include <cstring>
 #include <fstream>
 #include <iomanip>
 #include <iostream>
@@ -58,16 +49,29 @@
 #include <thread>
 #include <vector>
 
-#include "base/commandlineflags.h"
-#include "glog/logging.h"
-#include "glog/raw_logging.h"
-#include "googletest.h"
+#include "config.h"
+#ifdef HAVE_GLOB_H
+#  include <glob.h>
+#endif
+#include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#  include <sys/wait.h>
+#endif
 
 #ifdef GLOG_USE_GFLAGS
 #  include <gflags/gflags.h>
 using namespace GFLAGS_NAMESPACE;
 #endif
 
+#include "base/commandlineflags.h"
+#include "glog/logging.h"
+#include "glog/raw_logging.h"
+#include "googletest.h"
+#include "utilities.h"
+
 #ifdef HAVE_LIB_GMOCK
 #  include <gmock/gmock.h>
 
diff --git a/src/mock-log_unittest.cc b/src/mock-log_unittest.cc
index 97b83c9..aa0a20e 100644
--- a/src/mock-log_unittest.cc
+++ b/src/mock-log_unittest.cc
@@ -31,6 +31,8 @@
 
 // Tests the ScopedMockLog class.
 
+#define _XOPEN_SOURCE 500
+
 #include "mock-log.h"
 
 #include <gmock/gmock.h>
diff --git a/src/signalhandler.cc b/src/signalhandler.cc
index 992fffb..5f27be1 100644
--- a/src/signalhandler.cc
+++ b/src/signalhandler.cc
@@ -31,6 +31,8 @@
 //
 // Implementation of InstallFailureSignalHandler().
 
+#define _POSIX_C_SOURCE 199309L
+
 #include <algorithm>
 #include <csignal>
 #include <ctime>
diff --git a/src/stl_logging_unittest.cc b/src/stl_logging_unittest.cc
index 5a8ae2a..984c3bb 100644
--- a/src/stl_logging_unittest.cc
+++ b/src/stl_logging_unittest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2003, Google Inc.
+// Copyright (c) 2024, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -27,6 +27,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#define _XOPEN_SOURCE 500
+
 #include "glog/stl_logging.h"
 
 #include <functional>
diff --git a/src/utilities.cc b/src/utilities.cc
index 4b1f5e0..f1eabf0 100644
--- a/src/utilities.cc
+++ b/src/utilities.cc
@@ -29,6 +29,8 @@
 //
 // Author: Shinichiro Hamaji
 
+#define _POSIX_C_SOURCE 1
+
 #include "utilities.h"
 
 #include <atomic>
diff --git a/src/utilities_unittest.cc b/src/utilities_unittest.cc
index 1818479..f304ada 100644
--- a/src/utilities_unittest.cc
+++ b/src/utilities_unittest.cc
@@ -28,6 +28,9 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
 // Author: Shinichiro Hamaji
+
+#define _XOPEN_SOURCE 500
+
 #include "utilities.h"
 
 #include "glog/logging.h"