diff --git a/Source/Platform.h b/Source/Platform.h
index 783b38ed..486b2044 100644
--- a/Source/Platform.h
+++ b/Source/Platform.h
@@ -49,14 +49,20 @@ typedef unsigned long HBRUSH;
 typedef WORD LANGID;
 #endif
 
-// system specific
 
-#ifdef _WIN32
+// script path separator
+
 #  define PATH_SEPARATOR_STR "\\"
 #  define PATH_SEPARATOR_C '\\'
+
+// system specific separator
+
+#ifdef _WIN32
+#  define PLATFORM_PATH_SEPARATOR_STR "\\"
+#  define PLATFORM_PATH_SEPARATOR_C '\\'
 #else
-#  define PATH_SEPARATOR_STR "/"
-#  define PATH_SEPARATOR_C '/'
+#  define PLATFORM_PATH_SEPARATOR_STR "/"
+#  define PLATFORM_PATH_SEPARATOR_C '/'
 #endif
 
 // attributes
diff --git a/Source/Plugins.cpp b/Source/Plugins.cpp
index a5df537a..10646e18 100644
--- a/Source/Plugins.cpp
+++ b/Source/Plugins.cpp
@@ -34,7 +34,7 @@ void Plugins::FindCommands(char* path, bool displayInfo)
 
       char* pathAndWildcard = new char [length+7];
       strcpy(pathAndWildcard,basePath);
-      strcat(pathAndWildcard,PATH_SEPARATOR_STR "*.dll");
+      strcat(pathAndWildcard,PLATFORM_PATH_SEPARATOR_STR "*.dll");
 
 #ifdef _WIN32
       WIN32_FIND_DATA data;
@@ -59,7 +59,7 @@ void Plugins::FindCommands(char* path, bool displayInfo)
 #ifdef _WIN32
         {
           char* dllPath = new char [length+strlen(data.cFileName)+2];
-          wsprintf(dllPath,"%s" PATH_SEPARATOR_STR "%s",basePath,data.cFileName);
+          wsprintf(dllPath,"%s" PLATFORM_PATH_SEPARATOR_STR "%s",basePath,data.cFileName);
 #else
           char *dllPath = new char [strlen(globbuf.gl_pathv[i])+1];
           strcpy(dllPath,globbuf.gl_pathv[i]);
@@ -93,7 +93,7 @@ void Plugins::GetExports(char* pathToDll, bool displayInfo)
     char           signature[1024];
 
     dllName[0] = 0;
-    char* ptr = strrchr(pathToDll,PATH_SEPARATOR_C);
+    char* ptr = strrchr(pathToDll,PLATFORM_PATH_SEPARATOR_C);
     if (ptr && *ptr && *(ptr+1)) strcpy(dllName,ptr+1);
 
     // find .dll
diff --git a/Source/build.cpp b/Source/build.cpp
index 75621a5d..217d0195 100644
--- a/Source/build.cpp
+++ b/Source/build.cpp
@@ -478,7 +478,7 @@ definedlist.add("NSIS_SUPPORT_LANG_IN_STRINGS");
 void CEXEBuild::setdirs(char *argv0)
 {
   char szNSISDir[NSIS_MAX_STRLEN*2],*fn2;
-  int len = sizeof(szNSISDir) - sizeof(PATH_SEPARATOR_STR "Include") - 1;
+  int len = sizeof(szNSISDir) - sizeof(PLATFORM_PATH_SEPARATOR_STR "Include") - 1;
 #ifdef _WIN32
   GetModuleFileName(NULL,szNSISDir,len);
 #else
@@ -487,10 +487,10 @@ void CEXEBuild::setdirs(char *argv0)
   szNSISDir[sizeof(szNSISDir)-1] = 0;
   my_free_realpath(argv0, buffer);
 #endif
-  fn2=strrchr(szNSISDir,PATH_SEPARATOR_C);
+  fn2=strrchr(szNSISDir,PLATFORM_PATH_SEPARATOR_C);
   if(fn2!=NULL) *fn2=0;
   definedlist.add("NSISDIR",(char*)szNSISDir);
-  strcat(szNSISDir, PATH_SEPARATOR_STR "Include");
+  strcat(szNSISDir, PLATFORM_PATH_SEPARATOR_STR "Include");
   include_dirs.add(szNSISDir,0);
 }
 
@@ -2322,7 +2322,7 @@ int CEXEBuild::write_output(void)
   // Pack exe header if asked for
   if (build_packname[0] && build_packcmd[0])
   {
-    FILE *tmpfile=fopen(build_packname,"wb");
+    FILE *tmpfile=FOPEN(build_packname,"wb");
     if (!tmpfile)
     {
       ERROR_MSG("Error: writing temporary file \"%s\" for pack\n",build_packname);
@@ -2336,7 +2336,7 @@ int CEXEBuild::write_output(void)
       ERROR_MSG("Error: calling packer on \"%s\"\n",build_packname);
       return PS_ERROR;
     }
-    tmpfile=fopen(build_packname,"rb");
+    tmpfile=FOPEN(build_packname,"rb");
     if (!tmpfile)
     {
       remove(build_packname);
@@ -2389,7 +2389,7 @@ int CEXEBuild::write_output(void)
     my_free_realpath(build_output_filename, buffer);
 #endif
   }
-  FILE *fp = fopen(build_output_filename,"w+b");
+  FILE *fp = FOPEN(build_output_filename,"w+b");
   if (!fp)
   {
     ERROR_MSG("Can't open output file\n");
@@ -2451,7 +2451,7 @@ int CEXEBuild::write_output(void)
 #ifdef NSIS_CONFIG_COMPRESSION_SUPPORT
   if (build_compress_whole)
   {
-  	int n;
+    int n;
     if (compressor == &lzma_compressor)
       n = ((CLZMA *) compressor)->Init(build_compress_level, build_compress_dict_size);
     else
@@ -3176,8 +3176,8 @@ void CEXEBuild::build_plugin_table(void)
     char* searchPath = new char [strlen(nsisdir)+9];
     if (searchPath)
     {
-      sprintf(searchPath,"%s" PATH_SEPARATOR_STR "Plugins",nsisdir);
-      INFO_MSG("Processing plugin dlls: \"%s" PATH_SEPARATOR_STR "*.dll\"\n",searchPath);
+      sprintf(searchPath,"%s" PLATFORM_PATH_SEPARATOR_STR "Plugins",nsisdir);
+      INFO_MSG("Processing plugin dlls: \"%s" PLATFORM_PATH_SEPARATOR_STR "*.dll\"\n",searchPath);
       m_plugins.FindCommands(searchPath,display_info?true:false);
       INFO_MSG("\n");
       delete[] searchPath;
diff --git a/Source/lang.cpp b/Source/lang.cpp
index 2c87910b..39e60bbe 100644
--- a/Source/lang.cpp
+++ b/Source/lang.cpp
@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include "build.h"
+#include "util.h"
 #include "DialogTemplate.h"
 #include "exehead/resource.h"
 
@@ -730,9 +731,9 @@ BOOL IsValidCodePage(UINT CodePage)
 
 // NSIS Language File parser
 LanguageTable * CEXEBuild::LoadLangFile(char *filename) {
-  FILE *f = fopen(filename, "r");
+  FILE *f = FOPEN(filename, "r");
   if (!f) {
-    ERROR_MSG("Error: Can't open language file!\n");
+    ERROR_MSG("Error: Can't open language file - \"%s\"!\n",filename);
     return 0;
   }
 
diff --git a/Source/makenssi.cpp b/Source/makenssi.cpp
index 207a6300..a24249dc 100644
--- a/Source/makenssi.cpp
+++ b/Source/makenssi.cpp
@@ -271,7 +271,7 @@ int main(int argc, char **argv)
         exepath[1023]=0;
         char *p=exepath;
         while (*p) p++;
-        while (p > exepath && *p != PATH_SEPARATOR_C) p=CharPrev(exepath,p);
+        while (p > exepath && *p != PLATFORM_PATH_SEPARATOR_C) p=CharPrev(exepath,p);
         if (p>exepath) p++;
         strcpy(p,"nsisconf.nsh");
         FILE *cfg=fopen(exepath,"rt");
@@ -336,10 +336,10 @@ int main(int argc, char **argv)
             p=CharPrev(dirbuf,p);
 #else
             getcwd(dirbuf,sizeof(dirbuf)-strlen(sfile)-2);
-            if (dirbuf[strlen(dirbuf)-1]!=PATH_SEPARATOR_C)
-              strcat(dirbuf,PATH_SEPARATOR_STR);
+            if (dirbuf[strlen(dirbuf)-1]!=PLATFORM_PATH_SEPARATOR_C)
+              strcat(dirbuf,PLATFORM_PATH_SEPARATOR_STR);
             strcat(dirbuf,sfile);
-            p=strrchr(dirbuf,PATH_SEPARATOR_C);
+            p=strrchr(dirbuf,PLATFORM_PATH_SEPARATOR_C);
 #endif
             if (!p) p=dirbuf;
             *p=0;
diff --git a/Source/script.cpp b/Source/script.cpp
index d216b575..a8b485c4 100644
--- a/Source/script.cpp
+++ b/Source/script.cpp
@@ -634,7 +634,7 @@ int CEXEBuild::parseScript()
 int CEXEBuild::includeScript(char *f)
 {
   SCRIPT_MSG("!include: \"%s\"\n",f);
-  FILE *incfp=fopen(f,"rt");
+  FILE *incfp=FOPEN(f,"rt");
   if (!incfp)
   {
     ERROR_MSG("!include: could not open file: \"%s\"\n",f);
@@ -1335,7 +1335,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
 
       FILE *fp;
       unsigned int datalen;
-      fp=fopen(file,"rb");
+      fp=FOPEN(file,"rb");
       if (!fp)
       {
         ERROR_MSG("LicenseLangString: open failed \"%s\"\n",file);
@@ -1643,7 +1643,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         if (!idx)
         {
           unsigned int datalen;
-          FILE *fp=fopen(file,"rb");
+          FILE *fp=FOPEN(file,"rb");
           if (!fp)
           {
             ERROR_MSG("LicenseData: open failed \"%s\"\n",file);
@@ -2196,7 +2196,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         int k=line.gettoken_enum(1, "all\0IDD_LICENSE\0IDD_DIR\0IDD_SELCOM\0IDD_INST\0IDD_INSTFILES\0IDD_UNINST\0IDD_VERIFY\0IDD_LICENSE_FSRB\0IDD_LICENSE_FSCB\0");
         if (k<0) PRINTHELP();
 
-        FILE *fui = fopen(line.gettoken_str(2), "rb");
+        FILE *fui = FOPEN(line.gettoken_str(2), "rb");
         if (!fui) {
           ERROR_MSG("Error: Can't open \"%s\"!\n", line.gettoken_str(2));
           return PS_ERROR;
@@ -2589,7 +2589,13 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         int cmpv=line.gettoken_int(3,&success);
         if (!success && comp != 4) PRINTHELP()
         SCRIPT_MSG("!system: \"%s\"\n",exec);
+#ifdef _WIN32
         int ret=system(exec);
+#else
+        char *execfixed = my_convert(exec);
+        int ret=system(execfixed);
+        my_convert_free(execfixed);
+#endif
         if (comp == 0 && ret < cmpv);
         else if (comp == 1 && ret > cmpv);
         else if (comp == 2 && ret != cmpv);
@@ -2616,7 +2622,9 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
           CloseHandle(pi.hProcess);
         }
 #else
-        system(exec);
+        char *execfixed = my_convert(exec);
+        system(execfixed);
+        my_convert_free(execfixed);
 #endif
         SCRIPT_MSG("!execute: \"%s\"\n",exec);
       }
@@ -2652,7 +2660,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         char *incfile = (char *) malloc(malloced);
         strcpy(incfile, f);
         glob_t globbuf;
-        if (!glob(incfile, GLOB_NOSORT, NULL, &globbuf))
+        if (!GLOB(incfile, GLOB_NOSORT, NULL, &globbuf))
         {
           for (unsigned int i = 0; i < globbuf.gl_pathc; i++)
           {
@@ -2700,7 +2708,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
 
                 if (includeScript(incfile) != PS_OK)
 #else
-            if (!glob(incfile, GLOB_NOSORT, NULL, &globbuf))
+            if (!GLOB(incfile, GLOB_NOSORT, NULL, &globbuf))
             {
               for (unsigned int i = 0; i < globbuf.gl_pathc; i++)
               {
@@ -4021,7 +4029,13 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
           if (!*on||line.getnumtokens()!=a+1||strstr(on,"*") || strstr(on,"?")) PRINTHELP()
 
           int tf=0;
+#ifdef _WIN32
           int v=do_add_file(line.gettoken_str(a), attrib, 0, linecnt,&tf,on);
+#else
+          char *fn = my_convert(line.gettoken_str(a));
+          int v=do_add_file(fn, attrib, 0, linecnt,&tf,on);
+          my_convert_free(fn);
+#endif
           if (v != PS_OK) return v;
           if (tf > 1) PRINTHELP()
           if (!tf)
@@ -4039,11 +4053,15 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
 
           return PS_OK;
         }
+#ifdef _WIN32
         else if (line.gettoken_str(a)[0] == '/') PRINTHELP()
+#endif
         if (line.getnumtokens()<a+1) PRINTHELP()
         while (a < line.getnumtokens())
         {
+#ifdef _WIN32
           if (line.gettoken_str(a)[0]=='/') PRINTHELP()
+#endif
           char buf[32];
           char *t=line.gettoken_str(a++);
           if (t[0] && CharNext(t)[0] == ':' && CharNext(t)[1] == '\\' && !CharNext(t)[2])
@@ -4053,7 +4071,13 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
             t=buf;
           }
           int tf=0;
+#ifdef _WIN32
           int v=do_add_file(t, attrib, rec, linecnt,&tf,NULL,which_token == TOK_FILE);
+#else
+          char *fn = my_convert(t);
+          int v=do_add_file(fn, attrib, rec, linecnt,&tf,NULL,which_token == TOK_FILE);
+          my_convert_free(fn);
+#endif
           if (v != PS_OK) return v;
           if (!tf)
           {
@@ -4337,7 +4361,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
             *p=0;
           }
           strcat(nrpath,path);
-          FILE *f=fopen(nrpath, "r");
+          FILE *f=FOPEN(nrpath, "r");
           if (f) {
             path=nrpath;
             fclose(f);
@@ -5283,7 +5307,13 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
       if (line.getnumtokens() == 2)
       {
         SCRIPT_MSG("PluginDir: \"%s\"\n",line.gettoken_str(1));
+#ifdef _WIN32
         m_plugins.FindCommands(line.gettoken_str(1),display_info?true:false);
+#else
+        char *converted_path = my_convert(line.gettoken_str(1));
+        m_plugins.FindCommands(converted_path,display_info?true:false);
+        my_convert_free(converted_path);
+#endif
         return PS_OK;
       }
     }
@@ -5310,7 +5340,10 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
 
         // DLL name on the user machine
         char tempDLL[NSIS_MAX_STRLEN];
-        wsprintf(tempDLL, "$PLUGINSDIR%s", strrchr(dllPath,'\\'));
+        char *dllName = strrchr(dllPath,PLATFORM_PATH_SEPARATOR_C);
+        if (dllName && *dllName == PLATFORM_PATH_SEPARATOR_C)
+          dllName++;
+        wsprintf(tempDLL, "$PLUGINSDIR%c%s", PATH_SEPARATOR_C, dllName);
 
         // Add the DLL to the installer
         if (data_handle == -1)
@@ -5491,11 +5524,11 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
   strcpy(dir,lgss);
   {
     char *s=dir+strlen(dir);
-    while (s > dir && *s != PATH_SEPARATOR_C) s=CharPrev(dir,s);
+    while (s > dir && *s != PLATFORM_PATH_SEPARATOR_C) s=CharPrev(dir,s);
     if (s == dir)
     {
-      if (*s == PATH_SEPARATOR_C)
-        sprintf(dir,"%c.",PATH_SEPARATOR_C);
+      if (*s == PLATFORM_PATH_SEPARATOR_C)
+        sprintf(dir,"%c.",PLATFORM_PATH_SEPARATOR_C);
       else
         strcpy(dir,".");
     }
@@ -5512,14 +5545,14 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
       if ((d.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
       {
 #else
-  glob(lgss, GLOB_NOSORT, NULL, &globbuf);
+  GLOB(lgss, GLOB_NOSORT, NULL, &globbuf);
   {
     for (unsigned int i = 0; i < globbuf.gl_pathc; i++)
     {
       struct stat s;
       if (!stat(globbuf.gl_pathv[i], &s) && S_ISREG(s.st_mode))
       {
-        char *filename = strrchr(globbuf.gl_pathv[i], PATH_SEPARATOR_C);
+        char *filename = strrchr(globbuf.gl_pathv[i], PLATFORM_PATH_SEPARATOR_C);
         if (filename)
           filename++;
         else
@@ -5532,7 +5565,7 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
 #ifdef _WIN32
         HANDLE hFile;
         
-        sprintf(newfn,"%s%s%s",dir,dir[0]?PATH_SEPARATOR_STR:"",d.cFileName);
+        sprintf(newfn,"%s%s%s",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"",d.cFileName);
         hFile = CreateFile(
           newfn,
           GENERIC_READ,
@@ -5559,10 +5592,10 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
 #else
         int fd;
 
-        sprintf(newfn,"%s%s%s",dir,dir[0]?PATH_SEPARATOR_STR:"",filename);
+        sprintf(newfn,"%s%s%s",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"",filename);
         len = (DWORD) s.st_size;
 
-        fd = open(newfn, O_RDONLY);
+        fd = OPEN(newfn, O_RDONLY);
         if (fd == -1)
         {
           globfree(&globbuf);
@@ -5792,7 +5825,7 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
     if (a==INVALID_FILE_ATTRIBUTES)
     {
       a=GetFileAttributes(dir);
-      sprintf(newfn,"%s%s*.*",dir,dir[0]?PATH_SEPARATOR_STR:"");
+      sprintf(newfn,"%s%s*.*",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"");
     }
 #else
     int a;
@@ -5800,7 +5833,7 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
     if (stat(lgss, &st))
     {
       stat(dir, &st);
-      sprintf(newfn,"%s%s*",dir,dir[0]?PATH_SEPARATOR_STR:"");
+      sprintf(newfn,"%s%s*",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"");
     }
 #endif
     else
@@ -5828,14 +5861,14 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
 #else
     if (S_ISDIR(st.st_mode))
     {
-      if (!glob(newfn, GLOB_NOSORT, NULL, &globbuf))
+      if (!GLOB(newfn, GLOB_NOSORT, NULL, &globbuf))
       {
         for (unsigned int i = 0; i < globbuf.gl_pathc; i++)
         {
           struct stat s;
           if (!stat(globbuf.gl_pathv[i], &s) && S_ISDIR(s.st_mode))
           {
-            char *dirname = strrchr(globbuf.gl_pathv[i], PATH_SEPARATOR_C);
+            char *dirname = strrchr(globbuf.gl_pathv[i], PLATFORM_PATH_SEPARATOR_C);
             if (dirname)
               dirname++;
             else
@@ -5876,12 +5909,12 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
 
               char spec[1024];
 #ifdef _WIN32
-              wsprintf(spec,"%s%s%s",dir,dir[0]?PATH_SEPARATOR_STR:"",d.cFileName);
+              wsprintf(spec,"%s%s%s",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"",d.cFileName);
 #else
-              wsprintf(spec,"%s%s%s",dir,dir[0]?PATH_SEPARATOR_STR:"",dirname);
+              wsprintf(spec,"%s%s%s",dir,dir[0]?PLATFORM_PATH_SEPARATOR_STR:"",dirname);
 #endif
               SCRIPT_MSG("%sFile: Descending to: \"%s\"\n",generatecode?"":"Reserve",spec);
-              strcat(spec,PATH_SEPARATOR_STR);
+              strcat(spec,PLATFORM_PATH_SEPARATOR_STR);
               strcat(spec,fspec);
               if (generatecode)
               {
@@ -5914,7 +5947,7 @@ int CEXEBuild::do_add_file(const char *lgss, int attrib, int recurse, int linecn
                   FindClose(htemp);
 #else
                 glob_t globbuf2;
-                glob(spec, GLOB_NOSORT, NULL, &globbuf2);
+                GLOB(spec, GLOB_NOSORT, NULL, &globbuf2);
                 if (globbuf2.gl_pathc)
                 {
 #endif
diff --git a/Source/util.cpp b/Source/util.cpp
index 46dae61e..d8fbee46 100644
--- a/Source/util.cpp
+++ b/Source/util.cpp
@@ -2,11 +2,16 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <time.h>
+#include <string.h>
 #include "exedata.h"
 #include "exehead/fileform.h"
 #include "util.h"
 #include "strlist.h"
 
+#ifndef _WIN32
+#  include <ctype.h>
+#endif
+
 int g_dopause=0;
 extern int g_display_errors;
 extern FILE *g_output;
@@ -28,7 +33,7 @@ void dopause(void)
 // Returns -3 if the size doesn't match
 // Returns -4 if the bpp doesn't match
 int update_bitmap(CResourceEditor* re, WORD id, char* filename, int width/*=0*/, int height/*=0*/, int maxbpp/*=0*/) {
-  FILE *f = fopen(filename, "rb");
+  FILE *f = FOPEN(filename, "rb");
   if (!f) return -1;
 
   if (fgetc(f) != 'B' || fgetc(f) != 'M') {
@@ -128,7 +133,7 @@ typedef struct {
 //   -1 - Bad icon file
 int replace_icon(CResourceEditor* re, WORD wIconId, char* filename)
 {
-  FILE* f = fopen(filename, "rb");
+  FILE* f = FOPEN(filename, "rb");
   if (!f) return -1;
 
   IconGroupHeader igh;
@@ -204,7 +209,7 @@ unsigned char* generate_uninstall_icon_data(char* filename)
 {
   int i;
 
-  FILE* f = fopen(filename, "rb");
+  FILE* f = FOPEN(filename, "rb");
   if (!f) return 0;
 
   IconGroupHeader igh;
@@ -379,7 +384,7 @@ char *CharPrev(const char *s, const char *p) {
 char *CharNext(const char *s) {
   int l = 0;
   if (s && *s)
-    l = max(1, mblen(s, strlen(s)));
+    l = max(1, mblen(s, MB_CUR_MAX));
   return (char *) s + l;
 }
 
@@ -416,7 +421,76 @@ void my_free_realpath(char *path, char *buffer)
 #endif
 }
 
+#define MY_ERROR_MSG(x) {if (g_display_errors) {fprintf(g_output,"%s", x);}}
 
+char *my_convert(const char *path)
+{
+  char *converted_path = strdup(path);
+  size_t len = strlen(path);
+
+  if(!converted_path)
+  {
+    MY_ERROR_MSG("Error: could not allocate memory in my_convert()\n");
+    return (char*) path; /* dirty */
+  }
+
+  /* Replace drive letter X: by /X */
+  if(len >= 2)
+  {
+    if (path[1] == ':')
+    {
+      converted_path[0] = '/';
+      converted_path[1] = (char) tolower((int) path[0]);
+    }
+  }
+
+  char *p = converted_path;
+
+  do
+  {
+    if (*p == '\\')
+    {
+      *p = '/';
+    }
+    p = CharNext(p);
+  }
+  while (*p);
+
+  return converted_path;
+}
+
+void my_convert_free(char *converted_path)
+{
+  free(converted_path);
+}
+
+int my_open(const char *pathname, int flags)
+{
+  char *converted_pathname = my_convert(pathname);
+
+  int result = open(converted_pathname, flags);
+  my_convert_free(converted_pathname);
+  return result;
+}
+
+FILE *my_fopen(const char *path, const char *mode)
+{
+  char *converted_path = my_convert(path);
+
+  FILE *result = fopen(converted_path, mode);
+  my_convert_free(converted_path);
+  return result;
+}
+
+int my_glob(const char *pattern, int flags,
+         int errfunc(const char * epath, int eerrno), glob_t *pglob)
+{
+  char *converted_pattern = my_convert(pattern);
+
+  int result = glob(converted_pattern, flags, errfunc, pglob);
+  my_convert_free(converted_pattern);
+  return result;
+}
 #endif
 
 void *operator new(size_t size) {
diff --git a/Source/util.h b/Source/util.h
index 6cc136a6..970345c3 100644
--- a/Source/util.h
+++ b/Source/util.h
@@ -3,6 +3,8 @@
 
 #ifndef _WIN32
 #  include <iconv.h>
+#  include <stdio.h>
+#  include <glob.h>
 #endif
 #include "ResourceEditor.h"
 
@@ -44,6 +46,23 @@ inline size_t __iconv_adaptor
 {
   return iconv_func (cd, (T)inbuf, inbytesleft, outbuf, outbytesleft);
 }
+
+char *my_convert(const char *path);
+void my_convert_free(char *converted_path);
+int my_open(const char *pathname, int flags);
+FILE *my_fopen(const char *path, const char *mode);
+int my_glob(const char *pattern, int flags,
+            int errfunc(const char * epath, int eerrno), glob_t *pglob);
+
+#define FOPEN(a, b) my_fopen(a, b)
+#define GLOB(a, b, c, d) my_glob(a, b, c, d)
+#define OPEN(a, b) my_open(a, b)
+
+#else
+
+#define FOPEN(a, b) fopen(a, b)
+#define GLOB(a, b, c, d) glob(a, b, c, d)
+#define OPEN(a, b) open(a, b)
 #endif
 
 #endif //_UTIL_H_