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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 30bd03c24123..9de464819664 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3617,7 +3617,7 @@ if test "$_os" = "WINNT"; then
AC_MSG_WARN([Installation set will not contain 64-bit Explorer extensions])
fi
else
- CXX_X64_BINARY=$MSVC_CXX
+ CXX_X64_BINARY=${CXX:-$MSVC_CXX}
fi
AC_SUBST(BUILD_X64)