feat: supports building with MinGW

Author: Hackerl

CMakeLists.txt

@@ -60,9 +60,9 @@ target_link_libraries(
         PRIVATE
         Iconv::Iconv
         Threads::Threads
-        $<$<PLATFORM_ID:Windows>:Ws2_32>
-        $<$<PLATFORM_ID:Windows>:Iphlpapi>
-        $<$<PLATFORM_ID:Windows>:Synchronization>
+        $<$<PLATFORM_ID:Windows>:ws2_32>
+        $<$<PLATFORM_ID:Windows>:iphlpapi>
+        $<$<PLATFORM_ID:Windows>:synchronization>
         PUBLIC
         fmt::fmt
         $<$<CXX_COMPILER_ID:GNU>:stdc++exp>

src/os/os.cpp

@@ -3,8 +3,9 @@
 #include <array>
 
 #ifdef _WIN32
+#include <atomic>
 #include <windows.h>
-#include <Lmcons.h>
+#include <lmcons.h>
 #include <zero/os/windows/error.h>
 #include <zero/strings/strings.h>
 #elif defined(__linux__)

src/os/process.cpp

@@ -18,6 +18,7 @@ zero::os::process::ID zero::os::process::currentProcessID() {
 #include <zero/defer.h>
 #include <zero/env.h>
 #include <fmt/ranges.h>
+#include <algorithm>
 #include <cassert>
 #include <ranges>
 #include <future>
@@ -28,7 +29,6 @@ zero::os::process::ID zero::os::process::currentProcessID() {
 #include <zero/os/windows/error.h>
 #else
 #include <csignal>
-#include <algorithm>
 #include <fcntl.h>
 #include <spawn.h>
 #include <sys/wait.h>

src/os/windows/process.cpp

@@ -93,7 +93,11 @@ std::expected<DWORD, std::error_code> zero::os::windows::process::Process::ppid(
         ));
     }));
 
+#ifdef __MINGW32__
+    return static_cast<DWORD>(reinterpret_cast<std::uintptr_t>(info.InheritedFromUniqueProcessId));
+#else
     return static_cast<DWORD>(reinterpret_cast<std::uintptr_t>(info.Reserved3));
+#endif
 }
 
 std::expected<std::string, std::error_code> zero::os::windows::process::Process::name() const {

test/CMakeLists.txt

@@ -49,7 +49,7 @@ target_link_libraries(
         Threads::Threads
         Catch2::Catch2WithMain
         FakeIt::FakeIt-catch
-        $<$<PLATFORM_ID:Windows>:Iphlpapi>
+        $<$<PLATFORM_ID:Windows>:iphlpapi>
 )
 
 include(Catch)