2.7.1 Install on Raspberry Pi Error

[daBee]

I'm not sure if this is the proper place for this. Platform, the rbenv package manager, or the default Debian version of ruby 2.7.1, which is the culprit.

rbenv install --list says ruby 2.7.1 is the latest fully stable version available. This is what happened, where the installation fails and tells me to make a full report:

[Sun Feb 27 20:53:36 rich@myzero2 ~] rbenv install 2.7.1
Downloading ruby-2.7.1.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.1.tar.bz2
Installing ruby-2.7.1...

BUILD FAILED (Debian 11 using ruby-build 20200401)

Inspect or clean up the working tree at /tmp/ruby-build.20220227205343.1479.n8yEbt
Results logged to /tmp/ruby-build.20220227205343.1479.log

Last 10 log lines:
  168 | }
      | ^
0x7f7d71b217 __libc_start_main
	../csu/libc-start.c:308
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.
make: *** [Makefile:421: ast.o] Error 1
make: *** Waiting for unfinished jobs....
[Sun Feb 27 20:58:04 rich@myzero2 ~]

The error log:

[Sun Feb 27 20:58:45 rich@myzero2 ~] cat /tmp/ruby-build.20220227205343.1479.log
/tmp/ruby-build.20220227205343.1479.n8yEbt ~
/tmp/ruby-build.20220227205343.1479.n8yEbt/ruby-2.7.1 /tmp/ruby-build.20220227205343.1479.n8yEbt ~
checking for ruby... /usr/bin/ruby
tool/config.guess already exists
tool/config.sub already exists
checking build system type... aarch64-unknown-linux-gnu
checking host system type... aarch64-unknown-linux-gnu
checking target system type... aarch64-unknown-linux-gnu
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for gcc option to accept ISO C99... none needed
checking how to run the C preprocessor... gcc -E
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking whether gcc needs -traditional... no
checking for ld... ld
checking whether the linker is GNU ld... yes
checking whether gcc -E accepts -o... yes
checking for gcc... /usr/bin/gcc
checking for ranlib... ranlib
checking for ar... ar
checking for ar flags... rcD
checking for as... as
checking for objdump... objdump
checking for objcopy... objcopy
checking for nm... nm
checking whether ln -s works... yes
checking whether make sets $(MAKE)... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for dtrace... no
checking for dot... no
checking for doxygen... no
checking for pkg-config... pkg-config
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for cd using physical directory... cd -P
checking whether CFLAGS is valid... yes
checking whether LDFLAGS is valid... yes
checking whether -Wl,-R. is accepted as LDFLAGS... yes
checking whether -Wl,-rpath,. is accepted as LDFLAGS... yes
checking whether -Wdeprecated-declarations is accepted as CFLAGS... yes
checking whether -Wdivision-by-zero is accepted as CFLAGS... no
checking whether -Wduplicated-cond is accepted as CFLAGS... yes
checking whether -Wimplicit-function-declaration is accepted as CFLAGS... yes
checking whether -Wimplicit-int is accepted as CFLAGS... yes
checking whether -Wmisleading-indentation is accepted as CFLAGS... yes
checking whether -Wpointer-arith is accepted as CFLAGS... yes
checking whether -Wshorten-64-to-32 is accepted as CFLAGS... no
checking whether -Wwrite-strings is accepted as CFLAGS... yes
checking whether -Wimplicit-fallthrough=0 is accepted as CFLAGS... yes
checking whether -Wmissing-noreturn is accepted as CFLAGS... yes
checking whether -Wno-cast-function-type is accepted as CFLAGS... yes
checking whether -Wno-constant-logical-operand is accepted as CFLAGS... yes
checking whether -Wno-long-long is accepted as CFLAGS... yes
checking whether -Wno-missing-field-initializers is accepted as CFLAGS... yes
checking whether -Wno-overlength-strings is accepted as CFLAGS... yes
checking whether -Wno-packed-bitfield-compat is accepted as CFLAGS... yes
checking whether -Wno-parentheses-equality is accepted as CFLAGS... yes
checking whether -Wno-self-assign is accepted as CFLAGS... yes
checking whether -Wno-tautological-compare is accepted as CFLAGS... yes
checking whether -Wno-unused-parameter is accepted as CFLAGS... yes
checking whether -Wno-unused-value is accepted as CFLAGS... yes
checking whether -Wsuggest-attribute=format is accepted as CFLAGS... yes
checking whether -Wsuggest-attribute=noreturn is accepted as CFLAGS... yes
checking whether -Wunused-variable is accepted as CFLAGS... yes
checking whether -diag-disable=175,188,2259 is accepted as CFLAGS... no
checking whether -Wextra-tokens is accepted as CFLAGS... no
checking whether -Wall -Wextra is accepted as CFLAGS... yes
checking whether -Qunused-arguments is accepted as CFLAGS... no
checking whether -D_FORTIFY_SOURCE=2 is accepted as CFLAGS... yes
checking whether -fstack-protector-strong is accepted as CFLAGS... yes
checking whether -fstack-protector-strong is accepted as LDFLAGS... yes
checking whether -Wl,--compress-debug-sections=zlib is accepted as LDFLAGS... yes
checking whether -std=gnu99 is accepted as CFLAGS... yes
checking whether -fno-strict-overflow is accepted as CFLAGS... yes
checking whether -ggdb3 is accepted as CFLAGS... yes
checking whether -fvisibility=hidden is accepted as CFLAGS... yes
checking whether -fno-fast-math is accepted as CFLAGS... yes
checking whether -fexcess-precision=standard is accepted as CFLAGS... yes
checking whether -fp-model precise is accepted as CFLAGS... no
checking whether compiler has statement and declarations in expressions... yes
checking for crypt in -lcrypt... yes
checking for dlopen in -ldl... yes
checking for shl_load in -ldld... no
checking for shutdown in -lsocket... no
checking for dirent.h that defines DIR... yes
checking for library containing opendir... none required
checking for stdbool.h that conforms to C99... yes
checking for _Bool... yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking a.out.h usability... yes
checking a.out.h presence... yes
checking for a.out.h... yes
checking atomic.h usability... no
checking atomic.h presence... no
checking for atomic.h... no
checking copyfile.h usability... no
checking copyfile.h presence... no
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checking direct.h usability... no
checking direct.h presence... no
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checking grp.h usability... yes
checking grp.h presence... yes
checking for grp.h... yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking float.h usability... yes
checking float.h presence... yes
checking for float.h... yes
checking ieeefp.h usability... no
checking ieeefp.h presence... no
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checking intrinsics.h usability... no
checking intrinsics.h presence... no
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checking langinfo.h usability... yes
checking langinfo.h presence... yes
checking for langinfo.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
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checking locale.h usability... yes
checking locale.h presence... yes
checking for locale.h... yes
checking malloc.h usability... yes
checking malloc.h presence... yes
checking for malloc.h... yes
checking malloc/malloc.h usability... no
checking malloc/malloc.h presence... no
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checking malloc_np.h usability... no
checking malloc_np.h presence... no
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checking net/socket.h usability... no
checking net/socket.h presence... no
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checking process.h usability... no
checking process.h presence... no
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checking pwd.h usability... yes
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checking sanitizer/asan_interface.h usability... yes
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checking sanitizer/msan_interface.h usability... no
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checking setjmpex.h usability... no
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checking stdalign.h usability... yes
checking stdalign.h presence... yes
checking for stdalign.h... yes
checking sys/attr.h usability... no
checking sys/attr.h presence... no
checking for sys/attr.h... no
checking sys/eventfd.h usability... yes
checking sys/eventfd.h presence... yes
checking for sys/eventfd.h... yes
checking sys/fcntl.h usability... yes
checking sys/fcntl.h presence... yes
checking for sys/fcntl.h... yes
checking sys/file.h usability... yes
checking sys/file.h presence... yes
checking for sys/file.h... yes
checking sys/id.h usability... no
checking sys/id.h presence... no
checking for sys/id.h... no
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking sys/mkdev.h usability... no
checking sys/mkdev.h presence... no
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checking sys/param.h usability... yes
checking sys/param.h presence... yes
checking for sys/param.h... yes
checking sys/prctl.h usability... yes
checking sys/prctl.h presence... yes
checking for sys/prctl.h... yes
checking sys/resource.h usability... yes
checking sys/resource.h presence... yes
checking for sys/resource.h... yes
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... yes
checking sys/sendfile.h usability... yes
checking sys/sendfile.h presence... yes
checking for sys/sendfile.h... yes
checking sys/socket.h usability... yes
checking sys/socket.h presence... yes
checking for sys/socket.h... yes
checking sys/syscall.h usability... yes
checking sys/syscall.h presence... yes
checking for sys/syscall.h... yes
checking sys/sysmacros.h usability... yes
checking sys/sysmacros.h presence... yes
checking for sys/sysmacros.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking sys/times.h usability... yes
checking sys/times.h presence... yes
checking for sys/times.h... yes
checking sys/uio.h usability... yes
checking sys/uio.h presence... yes
checking for sys/uio.h... yes
checking sys/utime.h usability... no
checking sys/utime.h presence... no
checking for sys/utime.h... no
checking syscall.h usability... yes
checking syscall.h presence... yes
checking for syscall.h... yes
checking time.h usability... yes
checking time.h presence... yes
checking for time.h... yes
checking ucontext.h usability... yes
checking ucontext.h presence... yes
checking for ucontext.h... yes
checking utime.h usability... yes
checking utime.h presence... yes
checking for utime.h... yes
checking gmp.h usability... yes
checking gmp.h presence... yes
checking for gmp.h... yes
checking for library containing __gmpz_init... -lgmp
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking whether byte ordering is bigendian... no
checking for an ANSI C-conforming const... yes
checking whether char is unsigned... yes
checking for inline... inline
checking for working volatile... yes
checking for typeof syntax and keyword spelling... typeof
checking for C/C++ restrict keyword... __restrict
checking for long long... yes
checking for off_t... yes
checking char bit... 8
checking size of int... 4
checking size of short... 2
checking size of long... 8
checking size of long long... 8
checking size of __int64... 0
checking size of __int128... 16
checking size of off_t... 8
checking size of void*... 8
checking size of float... 4
checking size of double... 8
checking size of time_t... 8
checking size of clock_t... 8
checking packed struct attribute... x __attribute__((packed))
checking whether -Wno-address-of-packed-member is accepted as CFLAGS... yes
checking for printf prefix for long long... ll
checking for pid_t... yes
checking for convertible type of pid_t... INT
checking for uid_t... yes
checking for convertible type of uid_t... UINT
checking for gid_t... yes
checking for convertible type of gid_t... UINT
checking for time_t... yes
checking for convertible type of time_t... LONG
checking for dev_t... yes
checking for convertible type of dev_t... ULONG
checking for mode_t... yes
checking for convertible type of mode_t... UINT
checking for rlim_t... yes
checking for convertible type of rlim_t... ULONG
checking for off_t... (cached) yes
checking for convertible type of off_t... LONG
checking for clockid_t... yes
checking for convertible type of clockid_t... INT
checking for prototypes... yes
checking token paste string... ansi
checking stringization... #expr
checking string literal concatenation... yes
checking for variable length prototypes and stdarg.h... yes
checking for variable length macro... yes
checking for alignas() syntax... __attribute__((__aligned__(x)))
checking for alignof() syntax... alignof
checking for CONSTFUNC function attribute... __attribute__ ((__const__)) x
checking for PUREFUNC function attribute... __attribute__ ((__pure__)) x
checking for NORETURN function attribute... __attribute__ ((__noreturn__)) x
checking for DEPRECATED function attribute... __attribute__ ((__deprecated__)) x
checking for DEPRECATED_BY function attribute... __attribute__ ((__deprecated__("by "#n))) x
checking for DEPRECATED_TYPE type attribute... __attribute__ ((__deprecated__ mesg)) x
checking for NOINLINE function attribute... __attribute__ ((__noinline__)) x
checking for ALWAYS_INLINE function attribute... __attribute__ ((__always_inline__)) x
checking for NO_SANITIZE function attribute... __attribute__ ((__no_sanitize__(san))) x
checking for NO_SANITIZE_ADDRESS function attribute... __attribute__ ((__no_sanitize_address__)) x
checking for NO_ADDRESS_SAFETY_ANALYSIS function attribute... __attribute__ ((__no_address_safety_analysis__)) x
checking for WARN_UNUSED_RESULT function attribute... __attribute__ ((__warn_unused_result__)) x
checking for MAYBE_UNUSED function attribute... __attribute__ ((__unused__)) x
checking for ERRORFUNC function attribute... __attribute__ ((__error__ mesg)) x
checking for WARNINGFUNC function attribute... __attribute__ ((__warning__ mesg)) x
checking for WEAK function attribute... __attribute__ ((__weak__)) x
checking for __attribute__((__depreacted__(msg))) in C++... yes
checking for FUNC_STDCALL function attribute... x
checking for FUNC_CDECL function attribute... x
checking for FUNC_FASTCALL function attribute... x
checking for FUNC_UNOPTIMIZED function attribute... __attribute__ ((__optimize__("O0"))) x
checking for FUNC_MINIMIZED function attribute... __attribute__ ((__optimize__("-Os","-fomit-frame-pointer"))) x
checking for function alias... alias
checking for __atomic builtins... yes
checking for __sync builtins... yes
checking for __builtin_unreachable... yes
checking for exported function attribute... __attribute__ ((__visibility__("default")))
checking for RUBY_FUNC_NONNULL function attribute... __attribute__ ((__nonnull__(n))) x
checking for function name string predefined identifier... __func__
checking if enum over int is allowed... yes
checking whether sys_nerr is declared... yes
checking whether getenv is declared... yes
checking for size_t... yes
checking size of size_t... 8
checking size of ptrdiff_t... 8
checking for printf prefix for size_t... z
checking for printf prefix for ptrdiff_t... t
checking for struct stat.st_blksize... yes
checking for struct stat.st_blocks... yes
checking for struct stat.st_rdev... yes
checking size of struct stat.st_size... SIZEOF_OFF_T
checking size of struct stat.st_blocks... SIZEOF_OFF_T
checking size of struct stat.st_ino... SIZEOF_LONG
checking for struct stat.st_atim... yes
checking for struct stat.st_atimespec... no
checking for struct stat.st_atimensec... no
checking for struct stat.st_mtim... yes
checking for struct stat.st_mtimespec... no
checking for struct stat.st_mtimensec... no
checking for struct stat.st_ctim... yes
checking for struct stat.st_ctimespec... no
checking for struct stat.st_ctimensec... no
checking for struct stat.st_birthtimespec... no
checking for struct statx.stx_btime... yes
checking for struct timeval... yes
checking size of struct timeval.tv_sec... SIZEOF_TIME_T
checking for struct timespec... yes
checking for struct timezone... yes
checking for fd_mask... yes
checking for int8_t... yes
checking size of int8_t... 1
checking for uint8_t... yes
checking size of uint8_t... 1
checking for int16_t... yes
checking size of int16_t... 2
checking for uint16_t... yes
checking size of uint16_t... 2
checking for int32_t... yes
checking size of int32_t... 4
checking for uint32_t... yes
checking size of uint32_t... 4
checking for int64_t... yes
checking size of int64_t... 8
checking for uint64_t... yes
checking size of uint64_t... 8
checking for int128_t... __int128
checking for uint128_t... unsigned __int128
checking for intptr_t... yes
checking size of intptr_t... 8
checking for uintptr_t... yes
checking size of uintptr_t... 8
checking for printf prefix for intptr_t... NONE
checking for ssize_t... yes
checking size of ssize_t... 8
checking for printf prefix for int64_t... NONE
checking for stack end address... __libc_stack_end
checking for uid_t in sys/types.h... (cached) yes
checking type of array argument to getgroups... gid_t
checking return type of signal handlers... void
checking for working alloca.h... yes
checking for alloca... yes
checking for dynamic size alloca... ok
checking for working memcmp... yes
checking for acosh... yes
checking for cbrt... yes
checking for crypt... yes
checking for dup2... yes
checking for erf... yes
checking for explicit_bzero... yes
checking for ffs... yes
checking for flock... yes
checking for hypot... yes
checking for lgamma_r... yes
checking for memmove... yes
checking for nan... yes
checking for nextafter... yes
checking for setproctitle... no
checking for strchr... yes
checking for strerror... yes
checking for strlcat... no
checking for strlcpy... no
checking for strstr... yes
checking for tgamma... yes
checking whether finite is declared... yes
checking whether isinf is declared... yes
checking whether isnan is declared... yes
checking sys/pstat.h usability... no
checking sys/pstat.h presence... no
checking for sys/pstat.h... no
checking for signbit... yes
checking for pid_t... (cached) yes
checking vfork.h usability... no
checking vfork.h presence... no
checking for vfork.h... no
checking for fork... yes
checking for vfork... yes
checking for working fork... yes
checking for working vfork... (cached) yes
checking for __syscall... no
checking for _longjmp... yes
checking for arc4random_buf... no
checking for atan2l... yes
checking for atan2f... yes
checking for chroot... yes
checking for chsize... no
checking for clock_gettime... yes
checking for copy_file_range... yes
checking for cosh... yes
checking for crypt_r... yes
checking for daemon... (cached) no
checking for dirfd... yes
checking for dl_iterate_phdr... yes
checking for dlopen... yes
checking for dladdr... yes
checking for dup... yes
checking for dup3... yes
checking for eaccess... yes
checking for endgrent... yes
checking for eventfd... yes
checking for explicit_memset... no
checking for fcopyfile... no
checking for fchmod... yes
checking for fchown... yes
checking for fcntl... yes
checking for fdatasync... yes
checking for fdopendir... yes
checking for fgetattrlist... no
checking for fmod... yes
checking for fstatat... yes
checking for fsync... yes
checking for ftruncate... yes
checking for ftruncate64... yes
checking for getattrlist... no
checking for getcwd... yes
checking for getgidx... no
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checking for getgrnam_r... yes
checking for getgroups... yes
checking for getpgid... yes
checking for getpgrp... yes
checking for getpriority... yes
checking for getpwnam_r... yes
checking for getrandom... yes
checking for getresgid... yes
checking for getresuid... yes
checking for getrlimit... yes
checking for getsid... yes
checking for gettimeofday... yes
checking for getuidx... no
checking for gmtime_r... yes
checking for grantpt... yes
checking for initgroups... yes
checking for ioctl... yes
checking for isfinite... no
checking for issetugid... no
checking for killpg... yes
checking for lchmod... no
checking for lchown... yes
checking for link... yes
checking for llabs... yes
checking for lockf... yes
checking for log2... yes
checking for lstat... yes
checking for lutimes... yes
checking for malloc_usable_size... yes
checking for malloc_size... no
checking for mblen... yes
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checking for memset_s... no
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checking for setpgid... yes
checking for setpgrp... yes
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checking for setresgid... yes
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checking for struct crypt_data.initialized... yes
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checking whether qsort_r is GNU version... yes
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checking whether atan2 handles Inf as C99... yes
checking for clock_getres... yes
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checking for timer_settime in -lrt... yes
checking for unsetenv returns a value... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking for struct tm.tm_zone... yes
checking for struct tm.tm_gmtoff... yes
checking for external int daylight... yes
checking for negative time_t for gmtime(3)... yes
checking for localtime(3) overflow correctly... yes
checking for sig_t... yes
checking whether right shift preserve sign bit... yes
checking whether _SC_CLK_TCK is supported... yes
checking stack growing direction on aarch64... -1
checking native coroutine implementation for aarch64-linux... arm64
checking for pthread_create in -lthr... no
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checking whether pthread_t is scalar type... yes
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checking for pthread_attr_getguardsize... yes
checking for pthread_get_stackaddr_np... no
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checking for thr_stksegment... no
checking for pthread_stackseg_np... no
checking for pthread_getthrds_np... no
checking for pthread_condattr_setclock... yes
checking for pthread_sigmask... yes
checking for pthread_setname_np... yes
checking for pthread_set_name_np... no
checking for pthread_getattr_np... yes
checking arguments of pthread_setname_np... (pthread_self(), name)
checking if mcontext_t is a pointer... no
checking for getcontext... yes
checking for setcontext... yes
checking if fork works with pthread... yes
checking whether ELF binaries are produced... yes
checking elf.h usability... yes
checking elf.h presence... yes
checking for elf.h... yes
checking elf_abi.h usability... no
checking elf_abi.h presence... no
checking for elf_abi.h... no
checking for uncompress in -lz... yes
checking mach-o/loader.h usability... no
checking mach-o/loader.h presence... no
checking for mach-o/loader.h... no
checking whether OS depend dynamic link works... yes
checking for backtrace... yes
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checking valgrind/memcheck.h usability... no
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checking for valgrind/memcheck.h... no
checking for strip... strip
checking whether -Wl,--no-undefined is accepted as LDFLAGS... yes
checking whether wrapper for LD_LIBRARY_PATH is needed... no
checking whether dtrace USDT is available... no
checking for __builtin_setjmp... yes with cast ()
checking for _setjmpex as a macro or function... no
checking for _setjmp as a macro or function... yes
checking for sigsetjmp as a macro or function... no
checking for setjmp type... __builtin_setjmp
checking for prefix of external symbols... NONE
checking pthread.h usability... yes
checking pthread.h presence... yes
checking for pthread.h... yes
checking if make is GNU make... yes
.ext/include/aarch64-linux/ruby/config.h updated
configure: ruby library version = 2.7.0
configure: creating ./config.status
config.status: creating GNUmakefile
config.status: creating Makefile
config.status: creating ruby-2.7.pc
---
Configuration summary for ruby version 2.7.1

   * Installation prefix: /home/rich/.rbenv/versions/2.7.1
   * exec prefix:         ${prefix}
   * arch:                aarch64-linux
   * site arch:           ${arch}
   * RUBY_BASE_NAME:      ruby
   * enable shared:       yes
   * ruby lib prefix:     ${libdir}/${RUBY_BASE_NAME}
   * site libraries path: ${rubylibprefix}/${sitearch}
   * vendor path:         ${rubylibprefix}/vendor_ruby
   * target OS:           linux
   * compiler:            gcc
   * with pthread:        yes
   * with coroutine:      arm64
   * enable shared libs:  yes
   * dynamic library ext: so
   * CFLAGS:              ${optflags} ${debugflags} ${warnflags}
   * LDFLAGS:             -L. -L/home/rich/.rbenv/versions/2.7.1/lib  \
                          -fstack-protector-strong -rdynamic \
                          -Wl,-export-dynamic
   * DLDFLAGS:            -L/home/rich/.rbenv/versions/2.7.1/lib  \
                          -Wl,--compress-debug-sections=zlib
   * optflags:            -O3
   * debugflags:          -ggdb3
   * warnflags:           -Wall -Wextra -Wdeprecated-declarations \
                          -Wduplicated-cond -Wimplicit-function-declaration \
                          -Wimplicit-int -Wmisleading-indentation \
                          -Wpointer-arith -Wwrite-strings \
                          -Wimplicit-fallthrough=0 -Wmissing-noreturn \
                          -Wno-cast-function-type \
                          -Wno-constant-logical-operand -Wno-long-long \
                          -Wno-missing-field-initializers \
                          -Wno-overlength-strings \
                          -Wno-packed-bitfield-compat \
                          -Wno-parentheses-equality -Wno-self-assign \
                          -Wno-tautological-compare -Wno-unused-parameter \
                          -Wno-unused-value -Wsuggest-attribute=format \
                          -Wsuggest-attribute=noreturn -Wunused-variable
   * strip command:       strip -S -x
   * install doc:         rdoc
   * JIT support:         yes
   * man page type:       doc
   * BASERUBY -v:         ruby 2.7.4p191 (2021-07-07 revision a21a3b7d23) \
                          [aarch64-linux-gnu]

---
	BASERUBY = /usr/bin/ruby --disable=gems
	CC = gcc
	LD = ld
	LDSHARED = gcc -shared
	CFLAGS = -O3 -ggdb3 -Wall -Wextra -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable -std=gnu99  -fPIC
	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -DCANONICALIZATION_FOR_MATHN -I. -I.ext/include/aarch64-linux -I./include -I. -I./enc/unicode/12.1.0
	CPPFLAGS = -I/home/rich/.rbenv/versions/2.7.1/include
	DLDFLAGS = -L/home/rich/.rbenv/versions/2.7.1/lib  -Wl,--compress-debug-sections=zlib -Wl,-soname,libruby.so.2.7 -fstack-protector-strong
	SOLIBS = -lz -lpthread -lrt -lrt -lgmp -ldl -lcrypt -lm
	LANG = en_CA.UTF-8
	LC_ALL = en_CA.UTF-8
	LC_CTYPE =
	MFLAGS = -j4 --jobserver-auth=6,7
gcc (Debian 10.2.1-6) 10.2.1 20210110
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

compiling ./main.c
compiling dmydln.c
compiling miniinit.c
compiling dmyext.c
making dummy probes.h
compiling ast.c
compiling bignum.c
compiling class.c
compiling compar.c
compiling compile.c
during RTL pass: sched1
ast.c: In function ‘node_find’:
ast.c:168:1: internal compiler error: Segmentation fault
  168 | }
      | ^
0x7f7d71b217 __libc_start_main
	../csu/libc-start.c:308
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.
make: *** [Makefile:421: ast.o] Error 1
make: *** Waiting for unfinished jobs....

[daBee]

Nobody? Seems the compiler is sketch on RP Bullseye.