devkitARM: disable tm clone registry and cxa-atexit

dkarm-eabi/patches/gcc-10.1.0.patch

@@ -236,3 +236,16 @@ index dddddc7c444..c2502597953 100644
  # the option is safe.
 -LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions
 +LIB2_DIVMOD_EXCEPTION_FLAGS := -fno-exceptions
+diff --git a/libgcc/crtstuff.c b/libgcc/crtstuff.c
+index 3f769a1c660..e005d8304b7 100644
+--- a/libgcc/crtstuff.c
++++ b/libgcc/crtstuff.c
+@@ -325,7 +325,7 @@ register_tm_clones (void)
+ 
+ #ifdef OBJECT_FORMAT_ELF
+ 
+-#if DEFAULT_USE_CXA_ATEXIT
++#if 1 /* DEFAULT_USE_CXA_ATEXIT */
+ /* Declare the __dso_handle variable.  It should have a unique value
+    in every shared-object; in a main program its value is zero.  The
+    object should in any case be protected.  This means the instance

dkarm-eabi/scripts/build-gcc.sh

@@ -64,7 +64,9 @@ then
 		--prefix=$prefix \
 		--enable-lto\
 		--with-system-zlib \
-		--with-bugurl="http://wiki.devkitpro.org/index.php/Bug_Reports" --with-pkgversion="devkitARM release 54" \
+		--disable-tm-clone-registry \
+		--disable-__cxa_atexit \
+		--with-bugurl="http://wiki.devkitpro.org/index.php/Bug_Reports" --with-pkgversion="devkitARM release 55" \
 		$CROSS_PARAMS \
 		$CROSS_GCC_PARAMS \
 		|| { echo "Error configuring gcc"; exit 1; }