[ruby-core:109905] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[ruby-core:109905] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been reported by stanhu (Stan Hu).

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109906] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


I should note that it's also possible to workaround the issue by compiling the interpreter with `LDFLAGS="-Wl,-undefined,dynamic_lookup"`.

`configure` no longer adds this flag by default because of the warning:

```
configure:28712: checking whether -Wl,-undefined,dynamic_lookup is accepted as LDFLAGS
configure:28739: gcc -o conftest -g -O2 -Wall -Wextra -Wdeprecated-declarations -Wdivision-by-zero -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wshorten-64-to-32 -Wwrite-strings -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wunused-variable -Wextra-tokens -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -fstack-protector-strong -Wl,-undefined,dynamic_lookup conftest.c -lpthread -ldl -lobjc >&5
ld: warning: -undefined dynamic_lookup may not work with chained fixups
```


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99151

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109907] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


It's possible this is a problem with the respective gems. In https://github.com/pganalyze/pg_query/issues/255#issuecomment-1248800937, I note that the `Init_pg_query` is using C++ visibility rules.

However, for `ffi-yajl`, I'm not sure this is the same problem:

```
compiling encoder.c
encoder.c:307:14: warning: unused function 'rb_cBignum_ffi_yajl' [-Wunused-function]
static VALUE rb_cBignum_ffi_yajl(VALUE self, VALUE rb_yajl_gen, VALUE state) {
             ^
1 warning generated.
linking shared-object ffi_yajl/ext/encoder.bundle
Undefined symbols for architecture arm64:
  "_yajl_gen_alloc", referenced from:
      _mEncoder_do_yajl_encode in encoder.o
  "_yajl_gen_array_close", referenced from:
      _gen_array_close in encoder.o
  "_yajl_gen_array_open", referenced from:
      _gen_array_open in encoder.o
  "_yajl_gen_bool", referenced from:
      _gen_true in encoder.o
      _gen_false in encoder.o
  "_yajl_gen_config", referenced from:
      _mEncoder_do_yajl_encode in encoder.o
  "_yajl_gen_free", referenced from:
      _mEncoder_do_yajl_encode in encoder.o
  "_yajl_gen_get_buf", referenced from:
      _mEncoder_do_yajl_encode in encoder.o
  "_yajl_gen_map_close", referenced from:
      _gen_map_close in encoder.o
  "_yajl_gen_map_open", referenced from:
      _gen_map_open in encoder.o
  "_yajl_gen_null", referenced from:
      _gen_null in encoder.o
  "_yajl_gen_number", referenced from:
      _gen_number in encoder.o
  "_yajl_gen_string", referenced from:
      _gen_cstring in encoder.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [encoder.bundle] Error 1
```

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99152

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109908] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


`ffi-yajl` expects to run `dlopen` to bring in these symbols: https://github.com/chef/ffi-yajl/blob/2ac7f207c0850a7621880ea03c85c509072fff85/ext/ffi_yajl/ext/dlopen/dlopen.c#L29

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99153

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109909] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[nobu (Nobuyoshi Nakada)]

Issue #19005 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Open to Feedback

What is the version of ruby you are using?

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99154

* Author: stanhu (Stan Hu)
* Status: Feedback
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109910] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


nobu (Nobuyoshi Nakada) wrote in #note-5:
> What is the version of ruby you are using?

ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99155

* Author: stanhu (Stan Hu)
* Status: Feedback
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109911] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


A relaated issue was discussed in https://gitlab.kitware.com/vtk/vtk/-/issues/17214#note_385533 in the context of Python.

https://github.com/apple-opensource/ld64/pull/1/files would indeed be useful.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99157

* Author: stanhu (Stan Hu)
* Status: Feedback
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109912] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


I think we can close this issue, unless someone thinks we might want to relax the `configure` check so that the `-undefined dynamic_lookup` linker flag is again the default for macOS.

Gems should be able to handle building without `-undefined dynamic_lookup`. Here are related fixes:

1. https://github.com/pganalyze/pg_query/pull/256
2. https://github.com/chef/ffi-yajl/pull/114


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99158

* Author: stanhu (Stan Hu)
* Status: Feedback
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109913] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[hsbt (Hiroshi SHIBATA)]

Issue #19005 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Feedback to Open

`ruby_3_1` head already fixed a similar issue with bundle loader. But I could reproduce https://bugs.ruby-lang.org/issues/19005#note-3 with `ruby_3_1` head. 

We should fix this before 3.1.3 release.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99159

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109914] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[hsbt (Hiroshi SHIBATA)]

Issue #19005 has been updated by hsbt (Hiroshi SHIBATA).


Ah, Sorry. I misunderstood. I could install other native extensions like ffi, hiredis and eventmachine.

this issue happens like ffi-yajl.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99160

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109919] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


Yes, it's only a few gems that previously depended on `-undefined dynamic_lookup` being present as a linker argument.

In the `pg_query` case, it seems that there is a bug: the library exports a symbol that's not actually present.

In the `ffi-yajl` case, it seems that the gem expects to `dlopen()` the `yayl` library, so the symbols are not present until the extension is actually loaded. We can resolve that by explicitly marking the symbols that will be used dynamically.

However, it's interesting to me that the Ruby `configure` script returned 0 compiling the program, but still marked the flag as being unavailable:

```
configure:28712: checking whether -Wl,-undefined,dynamic_lookup is accepted as LDFLAGS
configure:28739: gcc -o conftest -g -O2 -Wall -Wextra -Wdeprecated-declarations -Wdivision-by-zero -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wshorten-\
64-to-32 -Wwrite-strings -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-parentheses-equality -W\
no-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wunused-variable -Wextra-tokens -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -fstack-\
protector-strong -Wl,-undefined,dynamic_lookup conftest.c -lpthread -ldl -lobjc >&5
ld: warning: -undefined dynamic_lookup may not work with chained fixups
configure:28739: $? = 0
configure: failed program was:
```

I don't know if there's a way to suppress that warning.
I think it's because the `configure` expects no output:

```
  (eval "$ac_link") 2>conftest.err
  ac_status=$?
  if test -s conftest.err; then
    grep -v '^ *+' conftest.err >conftest.er1
    cat conftest.er1 >&5
    mv -f conftest.er1 conftest.err
  fi
```




----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99166

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:109931] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


Thanks! I've confirmed this solves the problem and that the linker adds this argument.

Could this patch be backported to 2.7 as well? Thanks!

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99178

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110083] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[hsbt (Hiroshi SHIBATA)]

Issue #19005 has been updated by hsbt (Hiroshi SHIBATA).


>Could this patch be backported to 2.7 as well? Thanks!

@stanhu Maybe, yes. I submitted the backport patches for Ruby 2.7 at https://github.com/ruby/ruby/pull/6442. 

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99338

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110159] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[nagachika (Tomoyuki Chikanaga)]

Issue #19005 has been updated by nagachika (Tomoyuki Chikanaga).

Backport changed from 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED to 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONE

merged https://github.com/ruby/ruby/pull/6440

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99416

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110271] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[hsbt (Hiroshi SHIBATA)]

Issue #19005 has been updated by hsbt (Hiroshi SHIBATA).

Backport changed from 2.7: REQUIRED, 3.0: REQUIRED, 3.1: DONE to 2.7: DONE, 3.0: DONE, 3.1: DONE

https://github.com/ruby/ruby/pull/6441 and https://github.com/ruby/ruby/pull/6442 have been merged.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99557

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110590] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[Eregon (Benoit Daloze)]

Issue #19005 has been updated by Eregon (Benoit Daloze).


I think longer-term it would be really best to avoid using `-Wl,-undefined,dynamic_lookup`.
The gems which depend on that should be fixed to avoid the need for it, or add `-Wl,-undefined,dynamic_lookup` themselves if they truly need it (probably extremely rare, it most likely means a missing `-lmylib` or so).

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99922

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110598] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[kou (Kouhei Sutou)]

Issue #19005 has been updated by kou (Kouhei Sutou).


FYI: Here is one of my use cases that need `-Wl,-undefined,dynamic_lookup`:
* cairo-gobject gem https://github.com/ruby-gnome/ruby-gnome/tree/master/cairo-gobject depends on symbols in cairo gem https://github.com/rcairo/rcairo/ and glib2 gem https://github.com/ruby-gnome/ruby-gnome/tree/master/glib2 .

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99929

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110599] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[kou (Kouhei Sutou)]

Issue #19005 has been updated by kou (Kouhei Sutou).


Ah, should we use `-Wl,-U` with explicit listed depending symbols for this?

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99930

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110600] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu)]

Issue #19005 has been updated by stanhu (Stan Hu).


> I think longer-term it would be really best to avoid using -Wl,-undefined,dynamic_lookup.

Yeah, I agree. The problem is that most gems aren't tested in this mode, and it's long been the default everywhere.

> Ah, should we use `-Wl,-U` with explicit listed depending symbols for this?

Yeah, that's what I did with https://github.com/chef/ffi-yajl/pull/114.


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99931

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:110601] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[kou (Kouhei Sutou)]

Issue #19005 has been updated by kou (Kouhei Sutou).


> but in your case you can you just link the library directly?

I can't do it because `cairo.bundle` (it's a bundle not a shared library) in the cairo gem can't be linked from `cairo_gobject.bundle` in the cairo-gobject gem.


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-99932

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/

[ruby-core:111419] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[naruse (Yui NARUSE) via ruby-core]

Issue #19005 has been updated by naruse (Yui NARUSE).


I found a video which explains chained fixups:
https://developer.apple.com/videos/play/wwdc2022/110362/

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-100791

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/
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[ruby-core:111713] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).


I think this problem was "accidentally" fixed in Ruby 2.7.7 and 3.0.5, but it's not working in Ruby 3.1.3 and up due to a simple removal of a dollar sign (https://github.com/ruby/ruby/commit/667aa81219ca080c0a4b9f97d29bb3221bd08a33). 

In Ruby 3.1.3, I'm not seeing the `ADDITIONAL_DLDFLAGS` set with `-Wl,-undefined,dynamic_lookup`:

```ruby
irb(main):001:0> RUBY_VERSION
=> "3.1.3"
irb(main):002:0> RbConfig::CONFIG['ADDITIONAL_DLDFLAGS']
=> ""
```

Whereas 3.0.5 has this:

```ruby
irb(main):001:0> RUBY_VERSION
=> "3.0.5"
irb(main):002:0> RbConfig::CONFIG['ADDITIONAL_DLDFLAGS']
=> "-Wl,-undefined,dynamic_lookup"
```

If I look at the `./configure` output in Ruby 3.0.5 or 2.7.7, I see something like this:

```
checking whether -Wl,-undefined,dynamic_lookup is accepted as LDFLAGS... ./configure: line 29806: -Wl,-undefined,dynamic_lookup=: command not found
checking whether -Wl,-undefined,dynamic_lookup is accepted for bundle... no
```

But with 3.1.3 and up, the `LDFLAGS` check is a straight no:

```
checking whether -Wl,-undefined,dynamic_lookup is accepted as LDFLAGS... no
```

The `configure` output with Ruby 3.0.5 looks like:

```
if ac_fn_c_try_link "$LINENO"
then :

    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
    printf "%s\n" "${msg_result_yes}yes${msg_reset}" >&6 ; }
else $as_nop
  $flag=
    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
    printf "%s\n" "${msg_result_no}no${msg_reset}" >&6 ; }
fi
```

The failing line in question is `$flag=`.

In Ruby 3.1.3 and up, it appears `$flag=` has been replaced with `flag=` due to https://github.com/ruby/ruby/commit/667aa81219ca080c0a4b9f97d29bb3221bd08a33:

```
if ac_fn_c_try_link "$LINENO"
then :

    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
    printf "%s\n" "${msg_result_yes}yes${msg_reset}" >&6 ; }
else $as_nop
  flag=
    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
    printf "%s\n" "${msg_result_no}no${msg_reset}" >&6 ; }
fi
```


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101110

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







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[ruby-core:111714] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).

Status changed from Discussion to Closed

Ok, I see this was reported in https://bugs.ruby-lang.org/issues/19082.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101112

* Author: stanhu (Stan Hu)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
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[ruby-core:111729] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).


A possible fix is to squelch this warning via `-no_fixup_chains`:

```diff
diff --git a/configure.ac b/configure.ac
index a2a0c1e387..d653a13bb8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3104,7 +3104,7 @@ AS_IF([test "$rb_cv_dlopen" = yes], [
         AC_SUBST(ADDITIONAL_DLDFLAGS, "")
 	for flag in \
 	  "-multiply_defined suppress" \
-	  "-undefined dynamic_lookup" \
+	  "-no_fixup_chains -undefined dynamic_lookup" \
 	  ; do
             test "x${linker_flag}" = x || flag="${linker_flag}`echo ${flag} | tr ' ' ,`"
             RUBY_TRY_LDFLAGS([$flag], [], [flag=])
```

I should note that bazel dropped `-undefined dynamic_lookup` entirely in https://github.com/bazelbuild/bazel/issues/16413, but that will break some gems that are not ready for this.


----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101132

* Author: stanhu (Stan Hu)
* Status: Discussion
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
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[ruby-core:111730] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).


Submitted https://github.com/ruby/ruby/pull/7086.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101133

* Author: stanhu (Stan Hu)
* Status: Discussion
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
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 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
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[ruby-core:111732] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[nobu (Nobuyoshi Nakada) via ruby-core]

Issue #19005 has been updated by nobu (Nobuyoshi Nakada).


Adding `-no_fixup_chains -undefined dynamic_lookup` together will break old compilers.
`-no_fixup_chains` should be checked solely **before** `-undefined dynamic_lookup`, at least.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101137

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
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 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
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[ruby-core:111769] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).


nobu (Nobuyoshi Nakada) wrote in #note-33:
> Adding `-no_fixup_chains -undefined dynamic_lookup` together will break old compilers.
> `-no_fixup_chains` should be checked solely **before** `-undefined dynamic_lookup`, at least.

Good point. I've updated https://github.com/ruby/ruby/pull/7086.

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-101177

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
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[ruby-core:114460] [Ruby master Bug#19005] Ruby interpreter compiled XCode 14 cannot build some native gems on macOS

[stanhu (Stan Hu) via ruby-core]

Issue #19005 has been updated by stanhu (Stan Hu).


We can close this now that XCode 14.3, which ships with clang 14.0.3, now fixes this issue: https://github.com/python/cpython/issues/97524#issuecomment-1458855301

----------------------------------------
Bug #19005: Ruby interpreter compiled XCode 14 cannot build some native gems on macOS
https://bugs.ruby-lang.org/issues/19005#change-104223

* Author: stanhu (Stan Hu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.6p219 (2022-04-12 revision 44c8bfa984) [arm64-darwin21]
* Backport: 2.7: DONE, 3.0: DONE, 3.1: DONE
----------------------------------------
This seems related to https://bugs.ruby-lang.org/issues/18912 and https://bugs.ruby-lang.org/issues/18981 .

Steps to reproduce:

1. Upgrade to XCode 14.
2. Compile a new Ruby interpreter. I used the version provided in https://github.com/ruby/ruby/pull/6297 with `./configure --prefix=/tmp/ruby --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline) --enable-shared`.
3. Confirm that `-Wl,-undefined,dynamic_lookup` is no longer available:

```
irb(main):001:0> RbConfig::CONFIG['DLDFLAGS']
=> "-Wl,-multiply_defined,suppress"
```

4. Ran `gem install pg_query` (`gem install ffi-yajl` will also fail).

Error:

```
linking shared-object pg_query/pg_query.bundle
Undefined symbols for architecture arm64:
  "Init_pg_query", referenced from:
     -exported_symbol[s_list] command line option
     (maybe you meant: _Init_pg_query)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I can workaround the problem by doing:

```
gem install pg_query -- --with-ldflags="-Wl,-undefined,dynamic_lookup"
```







-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
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