--- /dev/null
+diff -ur nsis-2.43-src/SCons/Config/gnu nsis-2.43-src-64bit-fixes/SCons/Config/gnu
+--- nsis-2.43-src/SCons/Config/gnu 2009-02-05 01:52:28.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/SCons/Config/gnu 2009-02-25 07:59:44.000000000 +0100
+@@ -95,8 +95,6 @@
+ makensis_env.Append(CXXFLAGS = ['-Wall']) # all warnings
+
+ conf = FlagsConfigure(makensis_env)
+-conf.CheckCompileFlag('-m32') #
+-conf.CheckLinkFlag('-m32') #
+ conf.CheckLinkFlag('$MAP_FLAG') # generate map file
+ if not defenv['DEBUG'] and defenv['STRIP'] and defenv['STRIP_CP']:
+ TestStrip(conf) # strip
+@@ -149,8 +147,6 @@
+ ### cross-platform util environment adjustments
+
+ conf = FlagsConfigure(cp_util_env)
+-conf.CheckCompileFlag('-m32')
+-conf.CheckLinkFlag('-m32')
+ if not defenv['DEBUG'] and defenv['STRIP'] and defenv['STRIP_CP']:
+ TestStrip(conf) # strip
+ conf.Finish()
+@@ -160,8 +156,6 @@
+ test_env = defenv.Clone()
+ test_env.Append(CPPPATH = ['#$BUILD_CONFIG'])
+ conf = FlagsConfigure(test_env)
+-conf.CheckCompileFlag('-m32')
+-conf.CheckLinkFlag('-m32')
+ conf.Finish()
+
+ ### weird GCC requirements
+diff -ur nsis-2.43-src/Source/DialogTemplate.cpp nsis-2.43-src-64bit-fixes/Source/DialogTemplate.cpp
+--- nsis-2.43-src/Source/DialogTemplate.cpp 2007-11-30 10:54:13.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/DialogTemplate.cpp 2009-02-25 07:59:44.000000000 +0100
+@@ -74,7 +74,7 @@
+ if (IS_INTRESOURCE(x)) { \
+ *(WORD*)seeker = 0xFFFF; \
+ seeker += sizeof(WORD); \
+- *(WORD*)seeker = ConvertEndianness(WORD(DWORD(x))); \
++ *(WORD*)seeker = ConvertEndianness(WORD(long(x))); \
+ seeker += sizeof(WORD); \
+ } \
+ else { \
+@@ -622,7 +622,7 @@
+ }
+ }
+
+- assert((DWORD) seeker - (DWORD) pbDlg == dwSize);
++ assert((long) seeker - (long) pbDlg == dwSize);
+
+ // DONE!
+ return pbDlg;
+diff -ur nsis-2.43-src/Source/mmap.cpp nsis-2.43-src-64bit-fixes/Source/mmap.cpp
+--- nsis-2.43-src/Source/mmap.cpp 2009-02-01 15:44:30.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/mmap.cpp 2009-02-25 07:59:44.000000000 +0100
+@@ -322,7 +322,7 @@
+ if (!pView)
+ return;
+
+- unsigned int alignment = ((unsigned int)pView) % m_iAllocationGranularity;
++ unsigned int alignment = ((unsigned long)pView) % m_iAllocationGranularity;
+ pView = (char *)pView - alignment;
+ size += alignment;
+ #ifdef _WIN32
+diff -ur nsis-2.43-src/Source/Platform.h nsis-2.43-src-64bit-fixes/Source/Platform.h
+--- nsis-2.43-src/Source/Platform.h 2009-02-01 15:44:30.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/Platform.h 2009-02-25 07:59:44.000000000 +0100
+@@ -166,7 +166,7 @@
+ # define MAKEINTRESOURCE MAKEINTRESOURCEA
+ # endif
+ # ifndef IMAGE_FIRST_SECTION
+-# define IMAGE_FIRST_SECTION(h) ( PIMAGE_SECTION_HEADER( (DWORD) h + \
++# define IMAGE_FIRST_SECTION(h) ( PIMAGE_SECTION_HEADER( (long) h + \
+ FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) + \
+ FIX_ENDIAN_INT16(PIMAGE_NT_HEADERS(h)->FileHeader.SizeOfOptionalHeader) ) )
+ # endif
+@@ -198,7 +198,7 @@
+ #endif
+
+ #ifndef ULONG_PTR
+-# define ULONG_PTR DWORD
++# define ULONG_PTR ULONG
+ #endif
+
+ #ifndef IDC_HAND
+@@ -703,7 +703,7 @@
+ WORD e_oemid;
+ WORD e_oeminfo;
+ WORD e_res2[10];
+- LONG e_lfanew;
++ DWORD e_lfanew;
+ } IMAGE_DOS_HEADER,*PIMAGE_DOS_HEADER;
+ # pragma pack()
+ # pragma pack(4)
+diff -ur nsis-2.43-src/Source/Plugins.cpp nsis-2.43-src-64bit-fixes/Source/Plugins.cpp
+--- nsis-2.43-src/Source/Plugins.cpp 2009-02-01 15:44:30.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/Plugins.cpp 2009-02-25 07:59:44.000000000 +0100
+@@ -136,7 +136,7 @@
+ DWORD prd = FIX_ENDIAN_INT32(sections[i].PointerToRawData);
+ PIMAGE_EXPORT_DIRECTORY exports = PIMAGE_EXPORT_DIRECTORY(&dlldata[0] + prd + ExportDirVA - va);
+ DWORD na = FIX_ENDIAN_INT32(exports->AddressOfNames);
+- unsigned long *names = (unsigned long*)((unsigned long) exports + (char *) na - ExportDirVA);
++ unsigned int *names = (unsigned int*)((unsigned long) exports + (char *) na - ExportDirVA);
+ for (unsigned long j = 0; j < FIX_ENDIAN_INT32(exports->NumberOfNames); j++)
+ {
+ const string name = string((char*)exports + FIX_ENDIAN_INT32(names[j]) - ExportDirVA);
+diff -ur nsis-2.43-src/Source/ResourceEditor.cpp nsis-2.43-src-64bit-fixes/Source/ResourceEditor.cpp
+--- nsis-2.43-src/Source/ResourceEditor.cpp 2009-02-05 01:50:12.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/ResourceEditor.cpp 2009-02-25 07:59:44.000000000 +0100
+@@ -684,7 +684,7 @@
+ rdDir.NumberOfIdEntries = ConvertEndianness(rdDir.NumberOfIdEntries);
+
+ CopyMemory(seeker, &rdDir, sizeof(IMAGE_RESOURCE_DIRECTORY));
+- crd->m_dwWrittenAt = DWORD(seeker);
++ crd->m_dwWrittenAt = long(seeker);
+ seeker += sizeof(IMAGE_RESOURCE_DIRECTORY);
+
+ for (int i = 0; i < crd->CountEntries(); i++) {
+@@ -705,7 +705,7 @@
+ rDirE.UName.NameString.NameIsString = (crd->GetEntry(i)->HasName()) ? 1 : 0;
+
+ CopyMemory(seeker, &rDirE, sizeof(MY_IMAGE_RESOURCE_DIRECTORY_ENTRY));
+- crd->GetEntry(i)->m_dwWrittenAt = DWORD(seeker);
++ crd->GetEntry(i)->m_dwWrittenAt = long(seeker);
+ seeker += sizeof(MY_IMAGE_RESOURCE_DIRECTORY_ENTRY);
+ }
+ qDirs.pop();
+@@ -721,7 +721,7 @@
+ rDataE.Size = ConvertEndianness(cRDataE->GetSize());
+
+ CopyMemory(seeker, &rDataE, sizeof(IMAGE_RESOURCE_DATA_ENTRY));
+- cRDataE->m_dwWrittenAt = DWORD(seeker);
++ cRDataE->m_dwWrittenAt = long(seeker);
+ seeker += sizeof(IMAGE_RESOURCE_DATA_ENTRY);
+
+ qDataEntries.pop();
+@@ -733,7 +733,7 @@
+ while (!qStrings.empty()) {
+ CResourceDirectoryEntry* cRDirE = qStrings.front();
+
+- PMY_IMAGE_RESOURCE_DIRECTORY_ENTRY(cRDirE->m_dwWrittenAt)->UName.NameString.NameOffset = ConvertEndianness(DWORD(seeker) - DWORD(pbRsrcSec));
++ PMY_IMAGE_RESOURCE_DIRECTORY_ENTRY(cRDirE->m_dwWrittenAt)->UName.NameString.NameOffset = ConvertEndianness(long(seeker) - long(pbRsrcSec));
+
+ WCHAR* szName = cRDirE->GetName();
+ WORD iLen = winchar_strlen(szName) + 1;
+@@ -764,7 +764,7 @@
+ /*
+ * Set all of the directory entries offsets.
+ */
+- SetOffsets(m_cResDir, DWORD(pbRsrcSec));
++ SetOffsets(m_cResDir, long(pbRsrcSec));
+ }
+
+ // Sets the offsets in directory entries
+@@ -887,7 +887,7 @@
+ // Returns -1 if can not be found
+ int CResourceDirectory::Find(WCHAR* szName) {
+ if (IS_INTRESOURCE(szName))
+- return Find((WORD) (DWORD) szName);
++ return Find((WORD) (long) szName);
+ else
+ if (szName[0] == '#')
+ return Find(WORD(winchar_stoi(szName + 1)));
+@@ -965,7 +965,7 @@
+ if (IS_INTRESOURCE(szName)) {
+ m_bHasName = false;
+ m_szName = 0;
+- m_wId = (WORD) (DWORD) szName;
++ m_wId = (WORD) (long) szName;
+ }
+ else {
+ m_bHasName = true;
+@@ -979,7 +979,7 @@
+ if (IS_INTRESOURCE(szName)) {
+ m_bHasName = false;
+ m_szName = 0;
+- m_wId = (WORD) (DWORD) szName;
++ m_wId = (WORD) (long) szName;
+ }
+ else {
+ m_bHasName = true;
+diff -ur nsis-2.43-src/Source/util.cpp nsis-2.43-src-64bit-fixes/Source/util.cpp
+--- nsis-2.43-src/Source/util.cpp 2009-02-01 15:44:30.000000000 +0100
++++ nsis-2.43-src-64bit-fixes/Source/util.cpp 2009-02-25 07:59:44.000000000 +0100
+@@ -77,9 +77,9 @@
+ }
+
+ if (width != 0) {
+- LONG biWidth;
++ DWORD biWidth;
+ fseek(f, 18, SEEK_SET); // Seek to the width member of the header
+- fread(&biWidth, sizeof(LONG), 1, f);
++ fread(&biWidth, sizeof(DWORD), 1, f);
+ FIX_ENDIAN_INT32_INPLACE(biWidth);
+ if (width != biWidth) {
+ fclose(f);
+@@ -88,12 +88,12 @@
+ }
+
+ if (height != 0) {
+- LONG biHeight;
++ DWORD biHeight;
+ fseek(f, 22, SEEK_SET); // Seek to the height member of the header
+- fread(&biHeight, sizeof(LONG), 1, f);
++ fread(&biHeight, sizeof(DWORD), 1, f);
+ FIX_ENDIAN_INT32_INPLACE(biHeight);
+ // Bitmap height can be negative too...
+- if (height != abs(biHeight)) {
++ if (height != abs((long int)biHeight)) {
+ fclose(f);
+ return -3;
+ }