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-rw-r--r--win/tcl.m48
1 files changed, 6 insertions, 2 deletions
diff --git a/win/tcl.m4 b/win/tcl.m4
index 59b51c9..d2ed530 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -619,8 +619,12 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
# The space-based-path will work for the Makefile, but will
# not work if AC_TRY_COMPILE is called. TEA has the
# TEA_PATH_NOSPACE to avoid this issue.
- CC="\"${PATH64}/cl.exe\" -I\"${MSSDK}/Include\" \
- -I\"${MSSDK}/Include/crt\" -I\"${MSSDK}/Include/crt/sys\""
+ # Check if _WIN64 is already recognized, and if so we don't
+ # need to modify CC.
+ AC_CHECK_DECL([_WIN64], [],
+ [CC="\"${PATH64}/cl.exe\" -I\"${MSSDK}/Include\" \
+ -I\"${MSSDK}/Include/crt\" \
+ -I\"${MSSDK}/Include/crt/sys\""])
RC="\"${MSSDK}/bin/rc.exe\""
CFLAGS_DEBUG="-nologo -Zi -Od ${runtime}d"
# Do not use -O2 for Win64 - this has proved buggy in code gen.