diff --git a/toonz/sources/common/tfx/ttzpimagefx.cpp b/toonz/sources/common/tfx/ttzpimagefx.cpp
index e9c16b8..9779846 100644
--- a/toonz/sources/common/tfx/ttzpimagefx.cpp
+++ b/toonz/sources/common/tfx/ttzpimagefx.cpp
@@ -11,7 +11,7 @@
 
 void parseIndexes(string indexes, vector<string> &items)
 {
-#ifndef MACOSX
+#ifdef WIN32
 	char seps[] = " ,;";
 	char *token;
 	if (indexes == "all" || indexes == "All" || indexes == "ALL")
@@ -39,7 +39,7 @@ void parseIndexes(string indexes, vector<string> &items)
 
 void insertIndexes(vector<string> items, PaletteFilterFxRenderData *t)
 {
-#ifndef MACOSX
+#ifdef WIN32
 	for (int i = 0; i < (int)items.size(); i++) {
 		char *starttoken, *endtoken;
 		char subseps[] = "-";
diff --git a/toonz/sources/common/tgl/tgl.cpp b/toonz/sources/common/tgl/tgl.cpp
index 4dad3e4..687fe0a 100644
--- a/toonz/sources/common/tgl/tgl.cpp
+++ b/toonz/sources/common/tgl/tgl.cpp
@@ -11,12 +11,14 @@
 #ifndef __sgi
 #ifdef WIN32
 #include <GL/glut.h>
+#elif defined(LINUX)
+#include <GL/glut.h>
 #else
 #include <GLUT/glut.h>
 #endif
 #endif
 
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 #include <QGLContext>
 #endif
 
diff --git a/toonz/sources/common/tiio/compatibility/tfile_io.h b/toonz/sources/common/tiio/compatibility/tfile_io.h
index c40ea20..2c3fe91 100644
--- a/toonz/sources/common/tiio/compatibility/tfile_io.h
+++ b/toonz/sources/common/tiio/compatibility/tfile_io.h
@@ -9,7 +9,7 @@ extern "C" {
 
 #include <stdio.h>
 
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 #include <stddef.h>
 #endif
 
diff --git a/toonz/sources/common/tipc/tipc.cpp b/toonz/sources/common/tipc/tipc.cpp
index 3c6f7ec..3fca4bf 100644
--- a/toonz/sources/common/tipc/tipc.cpp
+++ b/toonz/sources/common/tipc/tipc.cpp
@@ -18,6 +18,9 @@
 #elif MACOSX
 #include <sys/sysctl.h>
 #include <unistd.h>
+#elif LINUX
+#include <sys/time.h>
+#include <unistd.h>
 #endif
 
 #include "tipc.h"
diff --git a/toonz/sources/common/tsystem/tpluginmanager.cpp b/toonz/sources/common/tsystem/tpluginmanager.cpp
index 0d5daef..0e002aa 100644
--- a/toonz/sources/common/tsystem/tpluginmanager.cpp
+++ b/toonz/sources/common/tsystem/tpluginmanager.cpp
@@ -21,7 +21,9 @@
 #include <dirent.h>
 #include <sys/dir.h>
 #include <sys/param.h> // for getfsstat
+#ifdef MACOSX
 #include <sys/ucred.h>
+#endif
 #include <sys/mount.h>
 #include <pwd.h>
 #include <dlfcn.h>
@@ -63,7 +65,7 @@ typedef const TPluginInfo *TnzLibMainProcType();
 namespace
 {
 const char *TnzLibMainProcName = "TLibMain";
-#ifdef MACOSX
+#if !defined(WIN32)
 const char *TnzLibMainProcName2 = "_TLibMain";
 #endif
 }
diff --git a/toonz/sources/common/tsystem/tsystempd.cpp b/toonz/sources/common/tsystem/tsystempd.cpp
index cb2a332..f1db615 100644
--- a/toonz/sources/common/tsystem/tsystempd.cpp
+++ b/toonz/sources/common/tsystem/tsystempd.cpp
@@ -186,6 +186,11 @@ bool TSystem::memoryShortage()
 	// to be done...
 	return false;
 
+#elif defined(LINUX)
+
+	// to be done...
+	return false;
+
 #else
 
 	@ @ @ERROR : PLATFORM NOT SUPPORTED
diff --git a/toonz/sources/common/ttest/ttest.cpp b/toonz/sources/common/ttest/ttest.cpp
index 303fa41..568bf80 100644
--- a/toonz/sources/common/ttest/ttest.cpp
+++ b/toonz/sources/common/ttest/ttest.cpp
@@ -15,6 +15,10 @@
 
 #include <set>
 
+#if defined(LINUX)
+#include <typeinfo>
+#endif
+
 using namespace std;
 
 namespace
diff --git a/toonz/sources/common/tvrender/ttessellator.cpp b/toonz/sources/common/tvrender/ttessellator.cpp
index f516003..ab48aae 100644
--- a/toonz/sources/common/tvrender/ttessellator.cpp
+++ b/toonz/sources/common/tvrender/ttessellator.cpp
@@ -97,7 +97,7 @@ extern "C" void CALLBACK myCombine(GLdouble coords[3], GLdouble *d[4],
 typedef GLvoid(CALLBACK *GluCallback)(void);
 #endif
 
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 
 typedef GLvoid (*GluCallback)();
 
diff --git a/toonz/sources/common/twain/twain.h b/toonz/sources/common/twain/twain.h
index 8a27515..84ae0a1 100644
--- a/toonz/sources/common/twain/twain.h
+++ b/toonz/sources/common/twain/twain.h
@@ -97,6 +97,11 @@
  * Platform Dependent Definitions and Typedefs                              *
  ****************************************************************************/
 
+
+#ifdef LINUX
+#include <wchar.h>
+#endif
+
 /* Microsoft C/C++ Compiler */
 #if defined(WIN32) || defined(WIN64) || defined(_WINDOWS)
 #define TWH_CMP_MSC
diff --git a/toonz/sources/image/compatibility/tfile_io.h b/toonz/sources/image/compatibility/tfile_io.h
index c40ea20..3a0c139 100644
--- a/toonz/sources/image/compatibility/tfile_io.h
+++ b/toonz/sources/image/compatibility/tfile_io.h
@@ -13,6 +13,10 @@ extern "C" {
 #include <stddef.h>
 #endif
 
+#ifdef LINUX
+#include <wchar.h>
+#endif
+
 char *convertWCHAR2CHAR(const wchar_t *fname);
 
 #if defined(MACOSX) || defined(LINUX)
diff --git a/toonz/sources/include/tcg/hpp/triangulate.hpp b/toonz/sources/include/tcg/hpp/triangulate.hpp
index 7230e83..5b51bd9 100644
--- a/toonz/sources/include/tcg/hpp/triangulate.hpp
+++ b/toonz/sources/include/tcg/hpp/triangulate.hpp
@@ -13,6 +13,8 @@
 #include <GL/glu.h>
 #elif MACOSX
 #include <GLUT/glut.h>
+#elif LINUX
+#include <GL/glut.h>
 #endif
 
 #ifndef TCG_GLU_CALLBACK
diff --git a/toonz/sources/include/tnztypes.h b/toonz/sources/include/tnztypes.h
index c37c657..3e70dfc 100644
--- a/toonz/sources/include/tnztypes.h
+++ b/toonz/sources/include/tnztypes.h
@@ -18,7 +18,7 @@ typedef uint32_t TUINT32;
 typedef int64_t TINT64;
 typedef uint64_t TUINT64;
 
-#elif defined(__LP64__)
+#elif defined(__LP64__) && (!defined(LINUX))
 
 #define TINT32 \
 	;          \
diff --git a/toonz/sources/include/tpixel.h b/toonz/sources/include/tpixel.h
index 49ba0d3..4014f18 100644
--- a/toonz/sources/include/tpixel.h
+++ b/toonz/sources/include/tpixel.h
@@ -154,6 +154,8 @@ public:
 	Channel b, g, r, m;
 #elif TNZ_MACHINE_CHANNEL_ORDER_MRGB
 	Channel m, r, g, b;
+#elif TNZ_MACHINE_CHANNEL_ORDER_RGBM
+	Channel r, g, b, m;
 #else
 undefined machine order !!!!
 #endif
diff --git a/toonz/sources/include/tsound_t.h b/toonz/sources/include/tsound_t.h
index 1c1e794..9f4690b 100644
--- a/toonz/sources/include/tsound_t.h
+++ b/toonz/sources/include/tsound_t.h
@@ -162,9 +162,9 @@ public:
 //----------------------------------------------------------------------------
 
 //!Applies a trasformation (echo, reverb, ect) to the object and returns the transformed soundtrack
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 	TSoundTrackP apply(TSoundTransform *transform);
-#else
+#else // WIN32
 	TSoundTrackP apply(TSoundTransform *transform)
 	{
 		assert(transform);
diff --git a/toonz/sources/include/tthread.h b/toonz/sources/include/tthread.h
index d9209da..4798608 100644
--- a/toonz/sources/include/tthread.h
+++ b/toonz/sources/include/tthread.h
@@ -35,7 +35,7 @@ void DVAPI shutdown();
 class ExecutorId; //Private
 class Runnable;
 
-#ifndef MACOSX
+#if !(defined(MACOSX) || defined(LINUX))
 template class TSmartPointerT<Runnable>;
 #endif
 typedef TSmartPointerT<Runnable> RunnableP;
diff --git a/toonz/sources/stdfx/igs_motion_blur.cpp b/toonz/sources/stdfx/igs_motion_blur.cpp
index 9daed9f..defd02d 100644
--- a/toonz/sources/stdfx/igs_motion_blur.cpp
+++ b/toonz/sources/stdfx/igs_motion_blur.cpp
@@ -2,6 +2,7 @@
 #include <stdexcept>		/* std::domain_error(-) */
 #include <limits>			/* std::numeric_limits */
 #include <cmath>			/* pow(-),abs(-) */
+#include <cstring>			/* memmove */
 #include "igs_ifx_common.h" /* igs::image::rgba */
 #include "igs_motion_blur.h"
 
diff --git a/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp b/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
index 0098245..4958fee 100644
--- a/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
+++ b/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
@@ -1,4 +1,5 @@
 #include <cerrno>
+#include <cstring>			/* memset */
 #include <vector>
 #include <stdexcept> // std::domain_error(-)
 #include <locale>
diff --git a/toonz/sources/tnzbase/tscanner/tscannerutil.cpp b/toonz/sources/tnzbase/tscanner/tscannerutil.cpp
index 6da313e..9d5d3fc 100644
--- a/toonz/sources/tnzbase/tscanner/tscannerutil.cpp
+++ b/toonz/sources/tnzbase/tscanner/tscannerutil.cpp
@@ -2,6 +2,8 @@
 
 #include "tscannerutil.h"
 
+#include <cstring>
+
 #define BUFBYTE(X, Y, BUF, BYTEWRAP, BITOFFS) \
 	(((UCHAR *)(BUF))[(((X) + (BITOFFS)) >> 3) + (Y) * (BYTEWRAP)])
 
diff --git a/toonz/sources/tnzext/plasticdeformer.cpp b/toonz/sources/tnzext/plasticdeformer.cpp
index 6ded943..bdab0f4 100644
--- a/toonz/sources/tnzext/plasticdeformer.cpp
+++ b/toonz/sources/tnzext/plasticdeformer.cpp
@@ -12,6 +12,8 @@
 
 #include "ext/plasticdeformer.h"
 
+#include <cstring>
+
 /*! \file plasticdeformer.cpp
 
   This file contains the implementation of a Mesh Deformer as specified in the
diff --git a/toonz/sources/tnzext/plastichandle.cpp b/toonz/sources/tnzext/plastichandle.cpp
index efe294c..46351a1 100644
--- a/toonz/sources/tnzext/plastichandle.cpp
+++ b/toonz/sources/tnzext/plastichandle.cpp
@@ -18,6 +18,8 @@ using namespace tcg::bgl;
 
 #include "ext/plastichandle.h"
 
+#include <cstring>
+
 //***********************************************************************************************
 //    Distance building
 //***********************************************************************************************
diff --git a/toonz/sources/tnzext/tlin/tlin_cblas_wrap.cpp b/toonz/sources/tnzext/tlin/tlin_cblas_wrap.cpp
index 171245f..d10f473 100644
--- a/toonz/sources/tnzext/tlin/tlin_cblas_wrap.cpp
+++ b/toonz/sources/tnzext/tlin/tlin_cblas_wrap.cpp
@@ -3,6 +3,7 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <memory>
+#include <cstring>
 
 //blasint may either be common 4 bytes or extended 8 (long)...
 //Replace this and REBUILD the CBLAS with extended int if needed.
diff --git a/toonz/sources/toonzfarm/tfarm/tfarmtask.cpp b/toonz/sources/toonzfarm/tfarm/tfarmtask.cpp
index bf79bb8..04fb70e 100644
--- a/toonz/sources/toonzfarm/tfarm/tfarmtask.cpp
+++ b/toonz/sources/toonzfarm/tfarm/tfarmtask.cpp
@@ -17,7 +17,7 @@
 #include <QSettings>
 
 // MACOSX includes
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 #include <netdb.h>	 // gethostbyname
 #include <arpa/inet.h> // inet_ntoa
 #endif
diff --git a/toonz/sources/toonzlib/autopos.cpp b/toonz/sources/toonzlib/autopos.cpp
index 18f8c34..9c5e403 100644
--- a/toonz/sources/toonzlib/autopos.cpp
+++ b/toonz/sources/toonzlib/autopos.cpp
@@ -14,7 +14,7 @@ fare resize e realloc size dello stack a 65000 unita'
 
 */
 
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 #define TRUE 1
 #define FALSE 0
 #endif
diff --git a/toonz/sources/toonzlib/trastercentroid.cpp b/toonz/sources/toonzlib/trastercentroid.cpp
index 8d05019..7110b4e 100644
--- a/toonz/sources/toonzlib/trastercentroid.cpp
+++ b/toonz/sources/toonzlib/trastercentroid.cpp
@@ -15,7 +15,7 @@
 #include "tmsg.h"
 #include "copP.h"*/
 
-#ifdef MACOSX
+#if defined(MACOSX) || defined(LINUX)
 #define TRUE 1
 #define FALSE 0
 #endif