[ruby-core:126678] [Ruby Bug#22311] Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable
Issue #22311 has been reported by himura467 (Akito Shitara). ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311 * Author: himura467 (Akito Shitara) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
Issue #22311 has been updated by nobu (Nobuyoshi Nakada). Thank you for the info. What should/can we do? Use autoconf 2.73 to make the tarballs? Or upgrade `AC_PREREQ(2.67)` to `2.73`? ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311#change-118984 * Author: himura467 (Akito Shitara) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
Issue #22311 has been updated by himura467 (Akito Shitara). Using autoconf 2.73 with `AC_CHECK_DECL` as you suggested would fix it. However, requiring 2.73 seems difficult for now, since the release tarballs are generated by 2.71, and Ubuntu 24.04/26.04 ship 2.71/2.72. So I think a runtime check would be more practical, either: 1. using `__builtin_available(macOS 27.0, *)`, or 2. checking the weakly linked symbols, as done for `utimensat` in file.c ([b6b9a619](https://github.com/ruby/ruby/commit/b6b9a6190def53aa53ac816a51034fa1c96ed70b)) and `pthread_threadid_np` in thread_pthread.c ([45177129](https://github.com/ruby/ruby/commit/45177129a75c5bfd03933b82076e8dc49acc500f)). Ref: https://blog.himura467.com/entry/2026/09/14/062404 ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311#change-118993 * Author: himura467 (Akito Shitara) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
Issue #22311 has been updated by etienne (Étienne Barrié). For already released tarballs, I just want to mention for people out there looking for a solution, that the easiest way I found to get a working build is to use `SDKROOT`. Tarball: ``` ./configure SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk ``` ruby-build: ``` ruby-build 4.0.6 ~/.ruby/ruby-4.0.6 -- SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk ``` ruby-install: ``` ruby-install 4.0.6 -- SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX26.sdk ``` ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311#change-118995 * Author: himura467 (Akito Shitara) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
Issue #22311 has been updated by hsbt (Hiroshi SHIBATA). The same report came to ruby-build as https://github.com/rbenv/ruby-build/issues/2640, and I worked it around there in https://github.com/rbenv/ruby-build/pull/2641. When the build host is older than macOS 27, ruby-build now exports `ac_cv_func_dup3=no` and `ac_cv_func_pipe2=no` before running `configure`. Neither function is callable at runtime on such a host whatever SDK is installed, so this only restores what the macOS 26 SDK used to produce. The same two cache variables are enough when building a released tarball by hand. ``` ac_cv_func_dup3=no ac_cv_func_pipe2=no ./configure ``` Unlike `SDKROOT`, this needs no older SDK on the machine. A fresh Command Line Tools 27 install ships only `MacOSX.sdk`, which is 27. In case a backport is considered, commit:6bfde8d2a239a9e8549de1ae29acecdefdfb8086 applies cleanly to `v4.0.7` and `v3_4_10`. On `v3_3_12` only the last hunk fails, and it is unnecessary there because `ruby_popen_writer` already goes through `rb_cloexec_pipe`. ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311#change-119027 * Author: himura467 (Akito Shitara) * Status: Closed * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
Issue #22311 has been updated by hsbt (Hiroshi SHIBATA). Backport changed from 3.3: REQUIRED, 3.4: REQUIRED, 4.0: REQUIRED to 3.3: DONE, 3.4: DONE, 4.0: DONE ruby_3_3 commit:0c8ab2a111722f38b58738dd3d8fb77b79c11249, ruby_3_4 commit:5a42e10000e344f2143b772b18b700a9f8e3c9cf and ruby_4_0 commit:d50f404ca12c04e8bc3e8dd805879a660258b5c4 merged revision(s) commit:6bfde8d2a239a9e8549de1ae29acecdefdfb8086. ---------------------------------------- Bug #22311: Build crashes on macOS 26 with the macOS 27 SDK because pipe2() and dup3() are unavailable https://bugs.ruby-lang.org/issues/22311#change-119045 * Author: himura467 (Akito Shitara) * Status: Closed * Backport: 3.3: DONE, 3.4: DONE, 4.0: DONE ---------------------------------------- ## Environment - macOS 26.6.2 - Command Line Tools with MacOSX27.0.sdk (default `MacOSX.sdk`) - Apple clang version 21.0.0 (clang-2100.3.34.2) ## Steps to reproduce ./autogen.sh mkdir build && cd build ../configure make ## Result The build warns about `dup3` and `pipe2`, and then miniruby crashes: ../io.c:389:19: warning: 'dup3' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:432:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ../io.c:8141:18: warning: 'pipe2' is only available on macOS 27.0 or newer [-Wunguarded-availability-new] ... make: *** [uncommon.mk:1331: builtin_binary.rbbin] Segmentation fault: 11 ## Cause The macOS 27 SDK declares `dup3()` and `pipe2()` as available since macOS 27.0. `AC_CHECK_FUNCS` links them without including headers, so configure defines `HAVE_DUP3` and `HAVE_PIPE2`. In io.c, they are weakly linked through the header and are NULL at runtime on macOS 26. $ nm -m miniruby | grep -E '_(pipe2|dup3) ' (undefined) weak external _dup3 (from libSystem) (undefined) weak external _pipe2 (from libSystem) ## Notes Autoconf 2.73 makes `AC_CHECK_DECL` report "no" for such functions on macOS. https://github.com/autotools-mirror/autoconf/blob/0a51305fff8847edd3e9da9e53... -- https://bugs.ruby-lang.org/
participants (4)
-
etienne -
himura467 (Akito Shitara)
-
hsbt (Hiroshi SHIBATA)
-
nobu (Nobuyoshi Nakada)