[ruby-core:104848] [Ruby master Bug#18072] Build error on Fedora 34 x86_64

Issue #18072 has been updated by jaruga (Jun Aruga).


I see the build error happens on the following commit. While it works on the previous commit. Maybe the commit causes the build error. Do you have any idea to fix it?

Build rubyspec CAPI extensions
https://github.com/ruby/ruby/commit/bda56a03a625793cb3fd110458c3f7323d73705e




----------------------------------------
Bug #18072: Build error on Fedora 34 x86_64
https://bugs.ruby-lang.org/issues/18072#change-93187

* Author: jaruga (Jun Aruga)
* Status: Open
* Priority: Normal
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
I just hit the build error by `make` on my machine Fedora 34 on the latest master 9ed196e4876dd15991feee27e7dce1b67783060f .

```
$ cat /etc/fedora-release 
Fedora release 34 (Thirty Four)
$ rpm -q gcc
gcc-11.2.1-1.fc34.x86_64
$ gcc --version
gcc (GCC) 11.2.1 20210728 (Red Hat 11.2.1-1)
Copyright (C) 2021 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.

$ autoconf

$ ./configure --enable-shared

$ make
	BASERUBY = /usr/local/ruby-3.0.2/bin/ruby --disable=gems
	CC = gcc
	LD = ld
	LDSHARED = gcc -shared
	CFLAGS = -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Werror=deprecated-declarations -Werror=duplicated-cond -Werror=implicit-function-declaration -Werror=implicit-int -Werror=misleading-indentation -Werror=pointer-arith -Werror=write-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 -Werror=undef -std=gnu99  -fPIC 
	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -DRUBY_DEVEL=1 -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -I. -I.ext/include/x86_64-linux -I./include -I. -I./enc/unicode/13.0.0
	CPPFLAGS =   
	DLDFLAGS = -Wl,--compress-debug-sections=zlib -Wl,-soname,libruby.so.3.1  -fstack-protector-strong  
	SOLIBS = -lz -lpthread -lrt -lrt -lgmp -ldl -lcrypt -lm 
	LANG = en_US.UTF-8
	LC_ALL = en_US.UTF-8
	LC_CTYPE = 
	MFLAGS = 
gcc (GCC) 11.2.1 20210728 (Red Hat 11.2.1-1)
Copyright (C) 2021 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
...
building rb_mjit_header.h
./miniruby -I./lib -I. -I.ext/common  ./tool/mjit_tabs.rb "" \
  gcc -E -DMJIT_HEADER -P -dD -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Werror=deprecated-declarations -Werror=duplicated-cond -Werror=implicit-function-declaration -Werror=implicit-int -Werror=misleading-indentation -Werror=pointer-arith -Werror=write-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 -Werror=undef -std=gnu99  -fPIC  -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -DRUBY_DEVEL=1 -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -I. -I.ext/include/x86_64-linux -I./include -I. -I./enc/unicode/13.0.0    ./vm.c >rb_mjit_header.h.new
rb_mjit_header.h updated
building .ext/include/x86_64-linux/rb_mjit_min_header-3.1.0.h
./miniruby -I./lib -I. -I.ext/common  ./tool/transform_mjit_header.rb "gcc -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Werror=deprecated-declarations -Werror=duplicated-cond -Werror=implicit-function-declaration -Werror=implicit-int -Werror=misleading-indentation -Werror=pointer-arith -Werror=write-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 -Werror=undef -std=gnu99  -fPIC  -w" rb_mjit_header.h .ext/include/x86_64-linux/rb_mjit_min_header-3.1.0.h
transform_mjit_header: making external definition static inline: rb_vm_lvar_exposed, Init_vm_stack_canary, rb_vm_opt_cfunc_p, rb_find_defined_class_by_owner, rb_vm_rewrite_cref, rb_vm_block_ep_update, rb_vm_cref_new_toplevel, rb_vm_frame_block_handler, rb_vm_cframe_keyword_p, rb_vm_ep_local_ep
transform_mjit_header: making declaration static inline: rb_vm_lvar_exposed, Init_vm_stack_canary, rb_vm_rewrite_cref, rb_vm_frame_block_handler, rb_vm_block_ep_update, rb_vm_ep_local_ep
transform_mjit_header: SKIPPED to transform: getlogin_r, pread64, pread, read, bsearch, fread_unlocked, fgets_unlocked, fread, fgets, vdprintf, dprintf, vfprintf, vprintf, printf, fprintf, getline, putchar_unlocked, putc_unlocked, fputc_unlocked, putchar, getchar_unlocked, getc_unlocked, fgetc_unlocked, getchar
ln -sf ../../../.ext/include/x86_64-linux/rb_mjit_min_header-3.1.0.h include/ruby-3.1.0/x86_64-linux/rb_mjit_min_header-3.1.0.h
config.status: creating ruby-runner.h
making mjit_build_dir.so
generating x86_64-linux-fake.rb
x86_64-linux-fake.rb updated
make: Circular spec/ruby/optional/capi/ext/array_spec.c <- exts dependency dropped.
./miniruby -I./lib -I. -I.ext/common  ./tool/runruby.rb --extout=.ext  -- --disable-gems -r./x86_64-linux-fake ./spec/mspec/bin/mspec-run -B ./spec/default.mspec  ./spec/ruby/optional/capi/ext/array_spec.c
Could not find spec file ./spec/ruby/optional/capi/ext/array_spec.c
make: *** [defs/gmake.mk:360: spec/ruby/optional/capi/ext/array_spec.c] Error 1
```

I could build on the master 1cb5a669d39fe741388be7ac45fc88c336b097cf last week.

So, the cause could be a commit between those commits.

```
$ git diff 1cb5a669d39fe741388be7ac45fc88c336b097cf..9ed196e4876dd15991feee27e7dce1b67783060f
```




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