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-rw-r--r--win/rules.vc5
1 files changed, 5 insertions, 0 deletions
diff --git a/win/rules.vc b/win/rules.vc
index 9302695..064823b 100644
--- a/win/rules.vc
+++ b/win/rules.vc
@@ -1323,6 +1323,11 @@ OPTDEFINES = $(OPTDEFINES) /DUSE_THREAD_ALLOC=1
!endif
!if $(STATIC_BUILD)
OPTDEFINES = $(OPTDEFINES) /DSTATIC_BUILD
+!elseif $(TCL_VERSION) > 86
+OPTDEFINES = $(OPTDEFINES) /DTCL_WITH_EXTERNAL_TOMMATH
+!if "$(MACHINE)" == "AMD64"
+OPTDEFINES = $(OPTDEFINES) /DMP_64BIT
+!endif
!endif
!if $(TCL_NO_DEPRECATED)
OPTDEFINES = $(OPTDEFINES) /DTCL_NO_DEPRECATED