Use linux as OS fallback if not mac or windows

dgl/src/Window.cpp

@@ -29,14 +29,12 @@
 # include "pugl/pugl_win.cpp"
 #elif defined(DISTRHO_OS_MAC)
 # include "pugl/pugl_osx.m"
-#elif defined(DISTRHO_OS_LINUX)
+#else
 # include <sys/types.h>
 # include <unistd.h>
 extern "C" {
 # include "pugl/pugl_x11.c"
 }
-#else
-# error Unsupported platform
 #endif
 
 #include "ApplicationPrivateData.hpp"

distrho/extra/ExternalWindow.hpp

@@ -19,13 +19,13 @@
 
 #include "String.hpp"
 
-#ifdef DISTRHO_OS_UNIX
+#ifdef DISTRHO_OS_WINDOWS
+# error Unsupported platform!
+#else
 # include <cerrno>
 # include <signal.h>
 # include <sys/wait.h>
 # include <unistd.h>
-#else
-# error Unsupported platform!
 #endif
 
 START_NAMESPACE_DISTRHO

distrho/extra/Thread.hpp

@@ -21,7 +21,7 @@
 #include "Sleep.hpp"
 #include "String.hpp"
 
-#ifdef DISTRHO_OS_LINUX_FULL
+#ifdef DISTRHO_OS_LINUX
 # include <sys/prctl.h>
 #endif
 
@@ -198,7 +198,7 @@ public:
     {
         DISTRHO_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0',);
 
-#ifdef DISTRHO_OS_LINUX_FULL
+#ifdef DISTRHO_OS_LINUX
         prctl(PR_SET_NAME, name, 0, 0, 0);
 #endif
 #if defined(__GLIBC__) && (__GLIBC__ * 1000 + __GLIBC_MINOR__) >= 2012

distrho/src/DistrhoDefines.h

@@ -38,17 +38,10 @@
 # elif defined(__HAIKU__)
 #  define DISTRHO_OS_HAIKU      1
 # elif defined(__linux__) || defined(__linux)
-#  define DISTRHO_OS_LINUX      1
-#  define DISTRHO_OS_LINUX_FULL 1
-# elif defined(__FreeBSD__) || defined(__GNU__)
-#  define DISTRHO_OS_LINUX      1
+#  define DISTRHO_OS_LINUX 1
 # endif
 #endif
 
-#if defined(DISTRHO_OS_LINUX) || defined(DISTRHO_OS_MAC)
-# define DISTRHO_OS_UNIX
-#endif
-
 #ifndef DISTRHO_DLL_EXTENSION
 # define DISTRHO_DLL_EXTENSION "so"
 #endif