diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8e336f..2933899 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,8 @@ option(BC_USE_OPENMP "Build with OpenMP support" ON)
 # https://devblogs.microsoft.com/cppblog/spectre-mitigations-in-msvc/
 option(ENABLE_SPECTRE_MITIGATION "Build using /Qspectre for MSVC" OFF)
 
+option(DISABLE_MSVC_ITERATOR_DEBUGGING "Disable iterator debugging in Debug configurations with the MSVC CRT" OFF)
+
 option(ENABLE_CODE_ANALYSIS "Use Static Code Analysis on build" OFF)
 
 option(USE_PREBUILT_SHADERS "Use externally built HLSL shaders" OFF)
@@ -415,6 +417,12 @@ if(WIN32)
     foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
       target_compile_definitions(${t} PRIVATE _UNICODE UNICODE _WIN32_WINNT=${WINVER})
     endforeach()
+
+    if(DISABLE_MSVC_ITERATOR_DEBUGGING)
+      foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
+        target_compile_definitions(${t} PRIVATE _ITERATOR_DEBUG_LEVEL=0)
+      endforeach()
+    endif()
 endif()
 
 if(BUILD_TOOLS AND WIN32 AND (NOT WINDOWS_STORE))
diff --git a/DirectXTex/BC6HBC7.cpp b/DirectXTex/BC6HBC7.cpp
index 132f86e..ac33e9e 100644
--- a/DirectXTex/BC6HBC7.cpp
+++ b/DirectXTex/BC6HBC7.cpp
@@ -1696,7 +1696,7 @@ void D3DX_BC6H::Decode(bool bSigned, HDRColorA* pOut) const noexcept
                 case BZ: aEndPts[1].B.b |= 1 << uint32_t(desc[uCurBit].m_uBit); break;
                 default:
                     {
-                    #ifdef _DEBUG
+                    #if defined(_WIN32) && defined(_DEBUG)
                         OutputDebugStringA("BC6H: Invalid header bits encountered during decoding\n");
                     #endif
                         FillWithErrorColors(pOut);
@@ -1740,7 +1740,7 @@ void D3DX_BC6H::Decode(bool bSigned, HDRColorA* pOut) const noexcept
             const size_t uNumBits = IsFixUpOffset(info.uPartitions, uShape, i) ? info.uIndexPrec - 1u : info.uIndexPrec;
             if (uStartBit + uNumBits > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC6H: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -1750,7 +1750,7 @@ void D3DX_BC6H::Decode(bool bSigned, HDRColorA* pOut) const noexcept
 
             if (uIndex >= ((info.uPartitions > 0) ? 8 : 16))
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC6H: Invalid index encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -1785,7 +1785,7 @@ void D3DX_BC6H::Decode(bool bSigned, HDRColorA* pOut) const noexcept
     }
     else
     {
-    #ifdef _DEBUG
+    #if defined(_WIN32) && defined(_DEBUG)
         const char* warnstr = "BC6H: Invalid mode encountered during decoding\n";
         switch (uMode)
         {
@@ -2596,7 +2596,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
         {
             if (uStartBit + RGBAPrec.r > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2611,7 +2611,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
         {
             if (uStartBit + RGBAPrec.g > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2626,7 +2626,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
         {
             if (uStartBit + RGBAPrec.b > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2641,7 +2641,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
         {
             if (uStartBit + RGBAPrec.a > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2658,7 +2658,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
         {
             if (uStartBit > 127)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2696,7 +2696,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
             const size_t uNumBits = IsFixUpOffset(ms_aInfo[uMode].uPartitions, uShape, i) ? uIndexPrec - 1u : uIndexPrec;
             if (uStartBit + uNumBits > 128)
             {
-            #ifdef _DEBUG
+            #if defined(_WIN32) && defined(_DEBUG)
                 OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
             #endif
                 FillWithErrorColors(pOut);
@@ -2713,7 +2713,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
                 const size_t uNumBits = i ? uIndexPrec2 : uIndexPrec2 - 1u;
                 if (uStartBit + uNumBits > 128)
                 {
-                #ifdef _DEBUG
+                #if defined(_WIN32) && defined(_DEBUG)
                     OutputDebugStringA("BC7: Invalid block encountered during decoding\n");
                 #endif
                     FillWithErrorColors(pOut);
@@ -2755,7 +2755,7 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const noexcept
     }
     else
     {
-    #ifdef _DEBUG
+    #if defined(_WIN32) && defined(_DEBUG)
         OutputDebugStringA("BC7: Reserved mode 8 encountered during decoding\n");
     #endif
         // Per the BC7 format spec, we must return transparent black
diff --git a/build/DirectXTex-GitHub-WSL-11.yml b/build/DirectXTex-GitHub-WSL-11.yml
index 038450c..fddbf60 100644
--- a/build/DirectXTex-GitHub-WSL-11.yml
+++ b/build/DirectXTex-GitHub-WSL-11.yml
@@ -90,12 +90,22 @@ jobs:
         }
 
   - task: CMake@1
-    displayName: CMake DirectXTex
+    displayName: CMake DirectXTex (Config) dbg
     inputs:
       cwd: '$(Build.SourcesDirectory)'
-      cmakeArgs: -B out -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
+      cmakeArgs: -B out -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
   - task: CMake@1
-    displayName: CMake DirectXTex (Build)
+    displayName: CMake DirectXTex (Build) dbg
     inputs:
       cwd: '$(Build.SourcesDirectory)'
       cmakeArgs: --build out -v
+  - task: CMake@1
+    displayName: CMake DirectXTex (Config) rel
+    inputs:
+      cwd: '$(Build.SourcesDirectory)'
+      cmakeArgs: -B out2 -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
+  - task: CMake@1
+    displayName: CMake DirectXTex (Build) rel
+    inputs:
+      cwd: '$(Build.SourcesDirectory)'
+      cmakeArgs: --build out2 -v
diff --git a/build/DirectXTex-GitHub-WSL.yml b/build/DirectXTex-GitHub-WSL.yml
index e7bb558..35bea99 100644
--- a/build/DirectXTex-GitHub-WSL.yml
+++ b/build/DirectXTex-GitHub-WSL.yml
@@ -90,12 +90,22 @@ jobs:
         }
 
   - task: CMake@1
-    displayName: CMake DirectXTex
+    displayName: CMake DirectXTex (Config) dbg
     inputs:
       cwd: '$(Build.SourcesDirectory)'
-      cmakeArgs: -B out -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
+      cmakeArgs: -B out -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
   - task: CMake@1
-    displayName: CMake DirectXTex (Build)
+    displayName: CMake DirectXTex (Build) dbg
     inputs:
       cwd: '$(Build.SourcesDirectory)'
       cmakeArgs: --build out -v
+  - task: CMake@1
+    displayName: CMake DirectXTex (Config) rel
+    inputs:
+      cwd: '$(Build.SourcesDirectory)'
+      cmakeArgs: -B out2 -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$(DEST_DIR)usr/local/share;$(DEST_DIR)usr/local/cmake
+  - task: CMake@1
+    displayName: CMake DirectXTex (Build) rel
+    inputs:
+      cwd: '$(Build.SourcesDirectory)'
+      cmakeArgs: --build out2 -v