Build 21.4.7

Hi guys,

While trying to build 24.1.7 with kerl on an Ubuntu 20.04 LTS (running
inside WSL/Windows Subsystem for Linux), i got the following error:

$ kerl build 24.1.7
[...]
make[4]: Entering directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib/crypto/c_src’
 CC     ../priv/obj/x86_64-pc-linux-gnu/crypto.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/aead.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/aes.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/algorithms.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/api_ng.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/atoms.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/bn.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/cipher.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/cmac.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/common.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/dh.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/digest.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/dss.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/ec.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/ecdh.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/eddsa.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/engine.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/evp.o
 CC     ../priv/obj/x86_64-pc
 CC     ../priv/obj/x86_64-pc-linux-gnu/hmac.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/info.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/mac.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/math.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/pkey.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/rand.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/rsa.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/srp.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/hash_equals.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/pbkdf2_hmac.o
 LD     ../priv/lib/x86_64-pc-linux-gnu/crypto.so
 CC     ../priv/obj/x86_64-pc-linux-gnu/crypto_callback.o
/usr/bin/install -c -d ../priv/lib/x86_64-pc-linux-gnu
gcc -L/usr/local/lib -Wl,--build-id -shared -Wl,-Bsymbolic -o
../priv/lib/x86_64-pc-linux-gnu/crypto_callback.so
../priv/obj/x86_64-pc-linux-gnu/crypto_callback.o
 CC     ../priv/obj/x86_64-pc-linux-gnu/otp_test_engine.o
 LD     ../priv/lib/x86_64-pc-linux-gnu/otp_test_engine.so
make[4]: Leaving directory ‘/home/frank/.kerl/builds/24.1.7
=== Entering application os_mon
make[3]: Entering directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib/os_mon/src’
 ERLC   ../ebin/disksup.beam
 ERLC   ../ebin/memsup.beam
 ERLC   ../ebin/cpu_sup.beam
Function: cpu_util_rel/3
Sub pass ssa_opt_type_start
cpu_sup.erl: internal error in pass beam_ssa_opt:
exception error: no function clause matching beam_types:make_float(NaN,NaN)
  in function  beam_ssa_type:‘-simplify/2-lc$^0/1-0-‘/2
  in call from beam_ssa_type:simplify/2
  in call from beam_ssa_type:simplify/5
  in call from beam_ssa_type:sig_is/7
  in call from beam_ssa_type:sig_bs/8
  in call from beam_ssa_type:sig_function_1/4
  in call from beam_ssa_type:do_sig_function/4
make[3]: ***
[/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/make/x86_64-pc-linux-gnu/
otp.mk:133: ../ebin/cpu_sup.beam] Error 1
make[3]: Leaving directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib/os_mon/src’
make[2]: *** [/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/make
make[3]: Leaving directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib/os_mon/src’
make[2]: *** [/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/make/
otp_subdir.mk:29: opt] Error 2
make[2]: Leaving directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib/os_mon’
make[1]: *** [/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/make/
otp_subdir.mk:29: opt] Error 2
make[1]: Leaving directory
‘/home/frank/.kerl/builds/24.1.7/otp_src_24.1.7/lib’
make: *** [Makefile:504: libs] Error 2


Help appreciated.
Thanks
F.