Build fixes to compile on MXE with C++11 enabled.

src/GLView.cc

@@ -216,7 +216,7 @@ void GLView::enable_opencsg_shaders()
     else if (GLEW_EXT_framebuffer_object && GLEW_EXT_packed_depth_stencil) {
       this->is_opencsg_capable = true;
     }
-#ifdef WIN32
+#ifdef _WIN32
     else if (WGLEW_ARB_pbuffer && WGLEW_ARB_pixel_format) this->is_opencsg_capable = true;
 #elif !defined(__APPLE__)
     else if (GLXEW_SGIX_pbuffer && GLXEW_SGIX_fbconfig) this->is_opencsg_capable = true;

src/PlatformUtils.cc

@@ -33,7 +33,7 @@ static std::string lookupResourcesPath()
 	    NULL
 	};
 #else
-#ifdef WIN32
+#ifdef _WIN32
     const char *searchpath[] = {
         ".", // Release location
         RESOURCE_FOLDER("../share/openscad"), // MSYS2 location
@@ -185,7 +185,7 @@ fs::path PlatformUtils::resourcePath(const std::string &resource)
 
 int PlatformUtils::setenv(const char *name, const char *value, int overwrite)
 {
-#if defined(WIN32)
+#if defined(_WIN32)
     const char *ptr = getenv(name);
     if ((overwrite == 0) && (ptr != NULL)) {
 	return 0;

src/QGLView.cc

@@ -135,14 +135,11 @@ void QGLView::display_opencsg_warning_dialog()
   message += _("It is highly recommended to use OpenSCAD on a system with "
     "OpenGL 2.0 or later.\n"
     "Your renderer information is as follows:\n");
-  QString rendererinfo;
-  rendererinfo.sprintf(_("GLEW version %s\n"
-                       "%s (%s)\n"
-                       "OpenGL version %s\n"),
-                       glewGetString(GLEW_VERSION),
-                       glGetString(GL_RENDERER), glGetString(GL_VENDOR),
-                       glGetString(GL_VERSION));
-  message += rendererinfo;
+  QString rendererinfo(_("GLEW version %1\n%2 (%3)\nOpenGL version %4\n"));
+  message += rendererinfo.arg((const char *)glewGetString(GLEW_VERSION),
+                       (const char *)glGetString(GL_RENDERER),
+                       (const char *)glGetString(GL_VENDOR),
+                       (const char *)glGetString(GL_VERSION));
 
   dialog->setText(message);
   dialog->enableOpenCSGBox->setChecked(Preferences::inst()->getValue("advanced/enable_opencsg_opengl1x").toBool());

src/func.cc

@@ -24,13 +24,13 @@
  *
  */
 
+#include "mathc99.h"
 #include "function.h"
 #include "expression.h"
 #include "evalcontext.h"
 #include "builtin.h"
 #include <sstream>
 #include <ctime>
-#include "mathc99.h"
 #include <limits>
 #include <algorithm>
 #include "stl-utils.h"

src/grid.h

@@ -3,7 +3,7 @@
 #include "mathc99.h"
 #include "linalg.h"
 
-#ifdef WIN32
+#ifdef _WIN32
 typedef __int64 int64_t;
 #else
 #include <stdint.h>

src/mathc99.h

@@ -1,6 +1,8 @@
 #pragma once
 
-#ifdef WIN32
+#if defined(_MSC_VER)
+
+// only for native windows builds, not MXE
 
 #include <cmath>
 //for native win32 builds we need to provide C99 math functions by ourselves
@@ -11,6 +13,7 @@ float fmax(float a, float b);
 
 #else
 
+#define _USE_MATH_DEFINES
 #include <math.h>
 
 #endif

src/modcontext.cc

@@ -1,3 +1,4 @@
+#include "mathc99.h"
 #include "modcontext.h"
 #include "module.h"
 #include "expression.h"