Windows: replace __CYGWIN__ with __MSYS__

src/detection/cpuUsage/cpuUsage.h

@@ -3,7 +3,7 @@
 #ifndef FF_INCLUDED_detection_cpu_cpuUsage
 #define FF_INCLUDED_detection_cpu_cpuUsage
 
-#if defined(_WIN32) || defined(__CYGWIN__)
+#if defined(_WIN32) || defined(__MSYS__)
     #define FF_DETECTION_CPUUSAGE_NOWAIT 1
 #endif
 

src/detection/os/os_windows.cpp

@@ -51,7 +51,7 @@ void ffDetectOSImpl(FFOSResult* os, const FFinstance* instance)
         ffStrbufClear(&os->variant);
     }
 
-    #ifdef __CYGWIN__
+    #ifdef __MSYS__
         ffStrbufAppendS(&os->id, "MSYS2");
     #else
         // Enable this after we have Windows logo support
@@ -61,7 +61,7 @@ void ffDetectOSImpl(FFOSResult* os, const FFinstance* instance)
     ffGetWmiObjString(pclsObj, L"BuildNumber", &os->buildID);
     ffGetWmiObjString(pclsObj, L"OSArchitecture", &os->architecture);
 
-    #ifdef __CYGWIN__
+    #ifdef __MSYS__
         ffStrbufSetS(&os->systemName, instance->state.utsname.sysname);
     #else
         ffStrbufSetS(&os->systemName, "Windows");

src/detection/terminalshell/terminalshell_linux.c

@@ -264,7 +264,7 @@ static void getShellVersion(FFstrbuf* exe, const char* exeName, FFstrbuf* versio
 }
 
 const FFTerminalShellResult*
-#if defined(__CYGWIN__) || defined(_WIN32)
+#if defined(__MSYS__) || defined(_WIN32)
     ffDetectTerminalShellPosix
 #else
     ffDetectTerminalShell

src/detection/terminalshell/terminalshell_windows.cpp

@@ -99,14 +99,14 @@ static uint32_t getTerminalInfo(FFTerminalShellResult* result, uint32_t pid)
     return ppid;
 }
 
-#ifdef __CYGWIN__
+#ifdef __MSYS__
     extern "C"
     const FFTerminalShellResult* ffDetectTerminalShellPosix(const FFinstance* instance);
 #endif
 
 const FFTerminalShellResult* ffDetectTerminalShell(const FFinstance* instance)
 {
-    #ifdef __CYGWIN__
+    #ifdef __MSYS__
         // This is hacky.
         // When running inside MSYS2, the real Windows parent process doesn't exist and we must find it in Linux way ( /proc/self/xxx )
         // When running outside of MSYS2, /proc/self/xxx doesn't exist and we must find it in Windows way