Fix for MinGW GCC 11.1 generating calls to sincos.

disable-sincos.patch

diff --git a/gcc/config/i386/mingw-w64.h b/gcc/config/i386/mingw-w64.h
index 0cec6b0..4fcf719 100644
--- a/gcc/config/i386/mingw-w64.h
+++ b/gcc/config/i386/mingw-w64.h
@@ -98,9 +98,3 @@ along with GCC; see the file COPYING3.  If not see
   %{shared|mdll: " SUB_LINK_ENTRY " --enable-auto-image-base} \
   " LINK_SPEC_LARGE_ADDR_AWARE "\
   %(shared_libgcc_undefs)"
-
-/* Enable sincos optimization, overriding cygming.h.  sincos, sincosf
-   and sincosl functions are available on mingw-w64, but not on the
-   original mingw32.  */
-#undef TARGET_LIBC_HAS_FUNCTION
-#define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function