$ set path=%path%;C:\Tcl8.6\bin

$ perl Makefile.PL
tclsh=C:/Tcl8.6/bin/tclsh.exe
tclConfig.sh=C:/Tcl8.6/lib/tclConfig.sh
tcl_library=C:/Tcl8.6/lib/tcl8.6
tcl_version=8.6
LIBS   = -LC:/Tcl8.6/lib -ltcl86
INC    = -IC:/Tcl8.6/include
DEFINE =
Checking if your kit is complete...
Looks good
Note (probably harmless): No library found for -ltcl86
Writing Makefile for Tcl

$ perl -pi.bak -e " s/\[.\$libpath/[\x22:nosearch \$libpath/ "   Makefile.PL

$ perl Makefile.PL
tclsh=C:/Tcl8.6/bin/tclsh.exe
tclConfig.sh=C:/Tcl8.6/lib/tclConfig.sh
tcl_library=C:/Tcl8.6/lib/tcl8.6
tcl_version=8.6
LIBS   = -LC:/Tcl8.6/lib -ltcl86
INC    = -IC:/Tcl8.6/include
DEFINE =
Writing Makefile for Tcl

$ dmake
cp Tcl.pm blib\lib\Tcl.pm
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe C:\perl\5.12.2\lib\ExtUtils\xsubpp  -typemap C:\perl\5.12.2\lib\ExtUtils\typemap -typemap typemap  Tcl.xs > Tcl.xsc && C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e "mv" -- Tcl.xsc Tcl.c
gcc -c  -IC:/Tcl8.6/include 	-s -O2 -DWIN32 -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -mms-bitfields -DPERL_MSVCRT_READFIX -s -O2 	  -DVERSION=\"1.02\" 	-DXS_VERSION=\"1.02\"  "-IC:\perl\5.12.2\lib\MSWin32-x86-multi-thread\CORE"   Tcl.c
Running Mkbootstrap for Tcl ()
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e "chmod" -- 644 Tcl.bs
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Mksymlists \
     -e "Mksymlists('NAME'=>\"Tcl\", 'DLBASE' => 'Tcl', 'DL_FUNCS' => {  }, 'FUNCLIST' => [], 'IMPORTS' => {  }, 'DL_VARS' => []);"
dlltool --def Tcl.def --output-exp dll.exp
g++ -o blib\arch\auto\Tcl\Tcl.dll -Wl,--base-file -Wl,dll.base -mdll -s -L"c:\perl\5.12.2\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib" Tcl.o -Wl,--image-base,0x300f0000  C:\perl\5.12.2\lib\MSWin32-x86-multi-thread\CORE\libperl512.a -LC:\Tcl8.6\lib -ltcl86 -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp
dlltool --def Tcl.def --base-file dll.base --output-exp dll.exp
g++ -o blib\arch\auto\Tcl\Tcl.dll -mdll -s -L"c:\perl\5.12.2\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib" Tcl.o -Wl,--image-base,0x300f0000  C:\perl\5.12.2\lib\MSWin32-x86-multi-thread\CORE\libperl512.a -LC:\Tcl8.6\lib -ltcl86 -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp 
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e "chmod" -- 755 blib\arch\auto\Tcl\Tcl.dll
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e "cp" -- Tcl.bs blib\arch\auto\Tcl\Tcl.bs
C:\perl\5.12.2\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e "chmod" -- 644 blib\arch\auto\Tcl\Tcl.bs