diff --git a/build_linux_x64.sh b/build_linux_x64.sh
index ae881d92a..e442b46e5 100644
--- a/build_linux_x64.sh
+++ b/build_linux_x64.sh
@@ -5,6 +5,8 @@ if [ ! -d "build/units_v7_x64" ]; then
 fi
 fpc -Px86_64 @src/v7/linux-x64.cfg -B src/v7/dss_capi_v7.lpr
 bash custom_link.sh lib/linux_x64
+fpc -Px86_64 @src/v7/linux-x64-dbg.cfg -B src/v7/dss_capi_v7d.lpr
+bash custom_link.sh lib/linux_x64
 
 # if [ ! -d "build/units_v8_x64" ]; then
     # mkdir build/units_v8_x64
diff --git a/build_linux_x86.sh b/build_linux_x86.sh
index 8ed0f62ed..7ecf3cbd7 100644
--- a/build_linux_x86.sh
+++ b/build_linux_x86.sh
@@ -5,6 +5,8 @@ if [ ! -d "build/units_v7_x86" ]; then
 fi
 fpc -Pi386 @src/v7/linux-x86.cfg -B src/v7/dss_capi_v7.lpr
 bash custom_link.sh lib/linux_x86
+fpc -Pi386 @src/v7/linux-x86-dbg.cfg -B src/v7/dss_capi_v7d.lpr
+bash custom_link.sh lib/linux_x86
 
 # if [ ! -d "build/units_v8_x86" ]; then
     # mkdir build/units_v8_x86
diff --git a/build_macos_x64.sh b/build_macos_x64.sh
index 86fb4da78..e5baedcb2 100644
--- a/build_macos_x64.sh
+++ b/build_macos_x64.sh
@@ -15,6 +15,16 @@ NEW_LIBKLUSOLVE="@loader_path/./libklusolve.dylib"
 install_name_tool -change "$CURRENT_LIBKLUSOLVE" "$NEW_LIBKLUSOLVE" "$DSS_CAPI_LIB"
 install_name_tool -id "@loader_path/./libdss_capi_v7.dylib" "$DSS_CAPI_LIB"
 
+fpc -Px86_64 @src/v7/darwin-x64-dbg.cfg -B src/v7/dss_capi_v7d.lpr
+bash custom_link.sh lib/darwin_x64
+
+# Make the lib look in the same folder for KLUSolve
+DSS_CAPI_LIB="lib/darwin_x64/libdss_capi_v7d.dylib"
+CURRENT_LIBKLUSOLVE=`otool -L "$DSS_CAPI_LIB" | grep libklusolve | cut -f 1 -d ' ' | sed $'s/^[ \t]*//'`
+NEW_LIBKLUSOLVE="@loader_path/./libklusolve.dylib"
+install_name_tool -change "$CURRENT_LIBKLUSOLVE" "$NEW_LIBKLUSOLVE" "$DSS_CAPI_LIB"
+install_name_tool -id "@loader_path/./libdss_capi_v7.dylib" "$DSS_CAPI_LIB"
+
 # if [ ! -d "build/units_v8_x64" ]; then
     # mkdir build/units_v8_x64
 # fi
diff --git a/build_win_x64.bat b/build_win_x64.bat
index cd3c6c548..83f34b930 100644
--- a/build_win_x64.bat
+++ b/build_win_x64.bat
@@ -26,7 +26,7 @@ if exist lib\win_x64\dss_capi_v7.dll (
     where /q dumpbin
     if errorlevel 1 (
         echo WARNING: dumpbin.exe is not in your path. Be sure to run this script on 
-        echo          the "x64 Native Tools Command Prompt for VS 2017" or the 
+        echo          the "Developer Command Prompt for VS 2019" or the 
         echo          equivalent for your Visual Studio version.
         exit /B 1
     )
@@ -45,6 +45,31 @@ if exist lib\win_x64\dss_capi_v7.dll (
     exit /B 1
 )
 
+fpc -Px86_64 @src\v7\windows-x64-dbg.cfg -B src\v7\dss_capi_v7d.lpr
+if errorlevel 1 exit /B 1
+if exist lib\win_x64\dss_capi_v7d.dll (
+    where /q dumpbin
+    if errorlevel 1 (
+        echo WARNING: dumpbin.exe is not in your path. Be sure to run this script on 
+        echo          the "Developer Command Prompt for VS 2019" or the 
+        echo          equivalent for your Visual Studio version.
+        exit /B 1
+    )
+    dumpbin /exports "lib\win_x64\dss_capi_v7d.dll" > lib\win_x64\exports.txt
+    echo LIBRARY DSS_CAPI_V7D > lib\win_x64\dss_capi_v7d.def
+    echo EXPORTS >> lib\win_x64\dss_capi_v7d.def
+    for /f "skip=19 tokens=4" %%A in (lib\win_x64\exports.txt) do echo %%A >> lib\win_x64\dss_capi_v7d.def
+    lib /def:lib\win_x64\dss_capi_v7d.def /out:lib\win_x64\dss_capi_v7d.lib /machine:X64
+    dlltool --as-flags=--64 -d lib\win_x64\dss_capi_v7d.def -m i386:x86-64 -l lib\win_x64\dss_capi_v7d.dll.a
+    
+    del /s lib\win_x64\dss_capi_v7d.exp
+    del /s lib\win_x64\dss_capi_v7d.def
+    del /s lib\win_x64\exports.txt
+) else (
+    echo ERROR: DSS_CAPI_V7D.DLL file not found. Check previous messages for possible causes.
+    exit /B 1
+)
+
 REM fpc -Px86_64 @src\v8\windows-x64.cfg -B src\v8\dss_capi_v8.lpr
 REM if errorlevel 1 exit /B 1
 REM if exist lib\win_x64\dss_capi_v8.dll (
diff --git a/build_win_x86.bat b/build_win_x86.bat
index 059f48cc7..fff8358b2 100644
--- a/build_win_x86.bat
+++ b/build_win_x86.bat
@@ -25,7 +25,7 @@ if exist lib\win_x86\dss_capi_v7.dll (
     where /q dumpbin
     if errorlevel 1 (
         echo WARNING: dumpbin.exe is not in your path. Be sure to run this script on 
-        echo          the "x86 Native Tools Command Prompt for VS 2017" or the 
+        echo          the "Developer Command Prompt for VS 2019" or the 
         echo          equivalent for your Visual Studio version.
         exit /B 1
     )
@@ -44,6 +44,31 @@ if exist lib\win_x86\dss_capi_v7.dll (
     exit /B 1
 )
 
+fpc -Pi386 @src\v7\windows-x86-dbg.cfg -B src\v7\dss_capi_v7d.lpr
+if errorlevel 1 exit /B 1
+if exist lib\win_x86\dss_capi_v7d.dll (
+    where /q dumpbin
+    if errorlevel 1 (
+        echo WARNING: dumpbin.exe is not in your path. Be sure to run this script on 
+        echo          the "Developer Command Prompt for VS 2019" or the 
+        echo          equivalent for your Visual Studio version.
+        exit /B 1
+    )
+    dumpbin /exports "lib\win_x86\dss_capi_v7d.dll" > lib\win_x86\exports.txt
+    echo LIBRARY DSS_CAPI_V7D > lib\win_x86\dss_capi_v7d.def
+    echo EXPORTS >> lib\win_x86\dss_capi_v7d.def
+    for /f "skip=19 tokens=4" %%A in (lib\win_x86\exports.txt) do echo %%A >> lib\win_x86\dss_capi_v7d.def
+    lib /def:lib\win_x86\dss_capi_v7d.def /out:lib\win_x86\dss_capi_v7d.lib /machine:X86
+    dlltool -d lib\win_x86\dss_capi_v7d.def -m i386 -l lib\win_x86\dss_capi_v7d.dll.a
+    
+    del /s lib\win_x86\dss_capi_v7d.exp
+    del /s lib\win_x86\dss_capi_v7d.def
+    del /s lib\win_x86\exports.txt
+) else (
+    echo ERROR: DSS_CAPI_V7D.DLL file not found. Check previous messages for possible causes.
+    exit /B 1
+)
+
 REM fpc -Pi386 @src\v8\windows-x86.cfg -B src\v8\dss_capi_v8.lpr
 REM if errorlevel 1 exit /B 1
 REM if exist lib\win_x86\dss_capi_v8.dll (
diff --git a/src/v7/darwin-x64-dbg.cfg b/src/v7/darwin-x64-dbg.cfg
new file mode 100644
index 000000000..cc28ac316
--- /dev/null
+++ b/src/v7/darwin-x64-dbg.cfg
@@ -0,0 +1,38 @@
+#DEFINE DSS_CAPI
+#DEFINE DSS_CAPI_MVMULT
+#DEFINE DSS_CAPI_HASHLIST
+-Mdelphi
+-Px86_64
+-FUbuild/units_v7_x64
+-Fd 
+-Fi./Version7/Source/CMD
+-Fu./Version7/Source/Controls 
+-Fu./Version7/Source/Executive 
+-Fu./Version7/Source/General 
+-Fu./Version7/Source/Meters 
+-Fu./Version7/Source/Parser 
+-Fu./Version7/Source/PCElements 
+-Fu./Version7/Source/PDElements 
+-Fu./Version7/Source/Shared 
+-Fu./Version7/Source/Common 
+-Fu./Version7/Source/CMD
+-Fu./src
+-Fllib/darwin_x64
+-k-Llib/darwin_x64
+-FElib/darwin_x64
+-Scghi
+-CF64
+-Cg
+-O1
+-g
+-gw3
+-gostabsabsincludes
+-godwarfmethodclassprefix
+-l 
+-vew
+-vm5025,5027,5029,9001
+-Tdarwin
+-k-lc 
+-k-lm 
+-k-lklusolve
+-sh
diff --git a/src/v7/dss_capi_v7.lpr b/src/v7/dss_capi_v7.lpr
index 988982f1f..ee773441a 100644
--- a/src/v7/dss_capi_v7.lpr
+++ b/src/v7/dss_capi_v7.lpr
@@ -1,4 +1,7 @@
+{$IFNDEF DSS_CAPI_DEBUG_BUILD}
 library dss_capi_v7;
+{$ENDIF}
+
 {$MODE Delphi}
 {$APPTYPE CONSOLE}
 
diff --git a/src/v7/dss_capi_v7d.lpr b/src/v7/dss_capi_v7d.lpr
new file mode 100644
index 000000000..9b18465b5
--- /dev/null
+++ b/src/v7/dss_capi_v7d.lpr
@@ -0,0 +1,3 @@
+{$DEFINE DSS_CAPI_DEBUG_BUILD}
+library dss_capi_v7d;
+{$I './dss_capi_v7.lpr'}
\ No newline at end of file
diff --git a/src/v7/linux-x64-dbg.cfg b/src/v7/linux-x64-dbg.cfg
new file mode 100644
index 000000000..77db05c49
--- /dev/null
+++ b/src/v7/linux-x64-dbg.cfg
@@ -0,0 +1,39 @@
+#DEFINE DSS_CAPI
+#DEFINE DSS_CAPI_MVMULT
+#DEFINE DSS_CAPI_HASHLIST
+-Mdelphi
+-Px86_64
+-FUbuild/units_v7_x64
+-Fd 
+-Fi./Version7/Source/CMD
+-Fu./Version7/Source/Controls 
+-Fu./Version7/Source/Executive 
+-Fu./Version7/Source/General 
+-Fu./Version7/Source/Meters 
+-Fu./Version7/Source/Parser 
+-Fu./Version7/Source/PCElements 
+-Fu./Version7/Source/PDElements 
+-Fu./Version7/Source/Shared 
+-Fu./Version7/Source/Common 
+-Fu./Version7/Source/CMD
+-Fu./src
+-Fllib/linux_x64
+-FElib/linux_x64
+-Scghi
+-CF64
+-Cg
+-O1
+-g
+-gw3
+-gostabsabsincludes
+-godwarfmethodclassprefix
+-l 
+-vew
+-vm5025,5027,5029,9001
+-Tlinux
+-k-lc 
+-k-lm 
+-k-Llib/linux_x64
+-k-lklusolve
+-k-R$ORIGIN/.
+-sh
diff --git a/src/v7/linux-x86-dbg.cfg b/src/v7/linux-x86-dbg.cfg
new file mode 100644
index 000000000..47877a533
--- /dev/null
+++ b/src/v7/linux-x86-dbg.cfg
@@ -0,0 +1,39 @@
+#DEFINE DSS_CAPI
+#DEFINE DSS_CAPI_MVMULT
+#DEFINE DSS_CAPI_HASHLIST
+-Mdelphi
+-Pi386
+-FUbuild/units_v7_x86
+-Fd 
+-Fi./Version7/Source/CMD
+-Fu./Version7/Source/Controls 
+-Fu./Version7/Source/Executive 
+-Fu./Version7/Source/General 
+-Fu./Version7/Source/Meters 
+-Fu./Version7/Source/Parser 
+-Fu./Version7/Source/PCElements 
+-Fu./Version7/Source/PDElements 
+-Fu./Version7/Source/Shared 
+-Fu./Version7/Source/Common 
+-Fu./Version7/Source/CMD
+-Fu./src
+-Fllib/linux_x86
+-FElib/linux_x86
+-Scghi
+-CF64
+-Cg
+-O1
+-g
+-gw3
+-gostabsabsincludes
+-godwarfmethodclassprefix
+-l 
+-vew
+-vm5025,5027,5029,9001
+-Tlinux
+-k-lc 
+-k-lm 
+-k-Llib/linux_x86
+-k-lklusolve
+-k-R$ORIGIN/.
+-sh
diff --git a/src/v7/windows-x64-dbg.cfg b/src/v7/windows-x64-dbg.cfg
new file mode 100644
index 000000000..db504c6c2
--- /dev/null
+++ b/src/v7/windows-x64-dbg.cfg
@@ -0,0 +1,33 @@
+#DEFINE DSS_CAPI
+#DEFINE DSS_CAPI_MVMULT
+#DEFINE DSS_CAPI_HASHLIST
+-Mdelphi
+-Px86_64 
+-FUbuild/units_v7_x64
+-Fd 
+-Fi./Version7/Source/CMD
+-Fu./Version7/Source/Controls 
+-Fu./Version7/Source/Executive 
+-Fu./Version7/Source/General 
+-Fu./Version7/Source/Meters 
+-Fu./Version7/Source/Parser 
+-Fu./Version7/Source/PCElements 
+-Fu./Version7/Source/PDElements 
+-Fu./Version7/Source/Shared 
+-Fu./Version7/Source/Common 
+-Fu./Version7/Source/CMD
+-Fu./src
+-Fllib/win_x64
+-FElib/win_x64
+-Scghi
+-CF64
+-Si
+-O1
+-g
+-gw3
+-gostabsabsincludes
+-godwarfmethodclassprefix
+-l 
+-vew
+-WB
+-vm5025,5027,5029,9001
diff --git a/src/v7/windows-x64.cfg b/src/v7/windows-x64.cfg
index 47b73b72f..c32000bb6 100644
--- a/src/v7/windows-x64.cfg
+++ b/src/v7/windows-x64.cfg
@@ -21,7 +21,6 @@
 -FElib/win_x64
 -Scghi
 -CF64
--Ct
 -O3
 -l 
 -vew
diff --git a/src/v7/windows-x86-dbg.cfg b/src/v7/windows-x86-dbg.cfg
new file mode 100644
index 000000000..e14c6cb5e
--- /dev/null
+++ b/src/v7/windows-x86-dbg.cfg
@@ -0,0 +1,33 @@
+#DEFINE DSS_CAPI
+#DEFINE DSS_CAPI_MVMULT
+#DEFINE DSS_CAPI_HASHLIST
+-Mdelphi
+-Pi386
+-FUbuild/units_v7_x86
+-Fd 
+-Fi./Version7/Source/CMD
+-Fu./Version7/Source/Controls 
+-Fu./Version7/Source/Executive 
+-Fu./Version7/Source/General 
+-Fu./Version7/Source/Meters 
+-Fu./Version7/Source/Parser 
+-Fu./Version7/Source/PCElements 
+-Fu./Version7/Source/PDElements 
+-Fu./Version7/Source/Shared 
+-Fu./Version7/Source/Common 
+-Fu./Version7/Source/CMD
+-Fu./src
+-Fllib/win_x86
+-FElib/win_x86
+-Scghi
+-CF64
+-Si
+-O1
+-g
+-gw3
+-gostabsabsincludes
+-godwarfmethodclassprefix
+-l 
+-vew
+-WB
+-vm5025,5027,5029,9001
diff --git a/src/v7/windows-x86.cfg b/src/v7/windows-x86.cfg
index 87c9e477a..92cea121a 100644
--- a/src/v7/windows-x86.cfg
+++ b/src/v7/windows-x86.cfg
@@ -21,7 +21,6 @@
 -FElib/win_x86
 -Scghi
 -CF64
--Ct
 -O3
 -l 
 -vew