ruby-build 20260916

Hide dup3() and pipe2() from configure on macOS older than 27

README.md

@@ -137,7 +137,7 @@ The build process may be configured through the following environment variables:
 | `RUBY_BUILD_ROOT`               | The path prefix to search for build definitions files. *Deprecated:* use `RUBY_BUILD_DEFINITIONS`|
 | `RUBY_BUILD_VENDOR_OPENSSL`     | Build and vendor openssl even if the system openssl is compatible                                |
 | `CC`                            | Path to the C compiler.                                                                          |
-| `RUBY_CFLAGS`                   | Additional `CFLAGS` options (_e.g.,_ to override `-O3`).                                         |
+| `RUBY_CFLAGS`                   | Overrides Ruby's default `CFLAGS`, including `-O3` (beware: without a `-O` flag Ruby is built unoptimized). To add flags, use `RUBY_CONFIGURE_OPTS=cflags=...` instead |
 | `CONFIGURE_OPTS`                | Additional `./configure` options.                                                                |
 | `MAKE`                          | Custom `make` command (_e.g.,_ `gmake`).                                                         |
 | `MAKE_OPTS` / `MAKEOPTS`        | Additional `make` options.                                                                       |

bin/ruby-build

@@ -18,7 +18,7 @@
 #   -6, --ipv6      Resolve names to IPv6 addresses only
 #
 
-RUBY_BUILD_VERSION="20260716"
+RUBY_BUILD_VERSION="20260916"
 
 OLDIFS="$IFS"
 
@@ -748,7 +748,18 @@ build_package_standard() {
       #
       # TODO: Consider changing this to check for GCC v15 specifically
       # rather than inspecting the OS itself.
-      export CFLAGS="-std=gnu17 $CFLAGS"
+
+      # Use the cflags configure variable, which Ruby's configure appends to
+      # its default optflags/debugflags/warnflags, unlike CFLAGS which would
+      # override them and notably lose the -O3, producing a -O0 Ruby.
+      export cflags="-std=gnu17 $cflags"
+    fi
+    if [ "$package_var_name" = "RUBY" ] && is_mac && ! is_mac 2700; then
+      # The macOS 27 SDK declares dup3() and pipe2() as available since macOS 27.0.
+      # Ruby's configure detects them even when building for an older macOS, where
+      # they are only weakly linked and are NULL at runtime, which makes miniruby
+      # crash during the build: https://bugs.ruby-lang.org/issues/22311
+      export ac_cv_func_dup3=no ac_cv_func_pipe2=no
     fi
     # ./configure --prefix=/path/to/ruby
     # shellcheck disable=SC2086,SC2153
@@ -1169,7 +1180,11 @@ homebrew_openssl_versions() {
 # Example: 3.1.23 -> 30123
 # See also osx_version, require_java
 normalize_semver() {
-  awk -F. '{print $1 * 10000 + $2 * 100 + $3}' <<<"$1"
+  if [ "$1" = "dev" ]; then
+    echo 99999999
+  else
+    awk -F. '{print $1 * 10000 + $2 * 100 + $3}' <<<"$1"
+  fi
 }
 
 # Checks if system OpenSSL does NOT satisfy the version requirement

script/release

@@ -8,7 +8,7 @@
 # - creates a new Release on GitHub
 # - [automated] a GitHub Action will create a Homebrew PR for the new release
 
-set -e
+set -ex
 
 git fetch -q --tags origin master
 git checkout -q master

share/man/man1/ruby-build.1

@@ -4,10 +4,10 @@
 .\" Generator: Asciidoctor 2.0.26
 .\"      Date: 2026-05-07
 .\"    Manual: ruby-build Manual
-.\"    Source: ruby-build 20260716
+.\"    Source: ruby-build 20260916
 .\"  Language: English
 .\"
-.TH "RUBY\-BUILD" "1" "2026-05-07" "ruby\-build 20260716" "ruby\-build Manual"
+.TH "RUBY\-BUILD" "1" "2026-05-07" "ruby\-build 20260916" "ruby\-build Manual"
 .ie \n(.g .ds Aq \(aq
 .el       .ds Aq '
 .ss \n[.ss] 0

share/ruby-build/4.0.7

@@ -0,0 +1,2 @@
+install_package "openssl-3.0.22" "https://github.com/openssl/openssl/releases/download/openssl-3.0.22/openssl-3.0.22.tar.gz#67ebca7e50d17383028045486653492195b83db95f8558709701bb47b5c1ef81" openssl --if needs_openssl:1.1.1-3.x.x
+install_package "ruby-4.0.7" "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.7.tar.gz#911ace20f90d068ca0e4dda6d0e4f0f81e52e52f2dd4f4004c721e253412e82d" enable_shared standard

share/ruby-build/jruby-10.1.1.0

@@ -0,0 +1,2 @@
+require_java 21
+install_package "jruby-10.1.1.0" "https://repo1.maven.org/maven2/org/jruby/jruby-dist/10.1.1.0/jruby-dist-10.1.1.0-bin.tar.gz#1e08bff6a7f0134a4774fba37d8cf88b9dd4a7317bd49fca5af696a327450148" jruby

test/compiler.bats

@@ -12,7 +12,7 @@ export -n RUBY_CONFIGURE_OPTS
   cd "$INSTALL_ROOT"
 
   stub_repeated uname '-s : echo Darwin'
-  stub sw_vers '-productVersion : echo 10.10'
+  stub_repeated sw_vers '-productVersion : echo 10.10'
   stub_repeated brew 'false'
   # shellcheck disable=SC2016
   stub_repeated make 'echo "make $(inspect_args "$@")" >> build.log'
@@ -43,3 +43,77 @@ OUT
   unstub brew
   unstub make
 }
+
+@test "dup3 and pipe2 are hidden from configure when building on older macOS" {
+  mkdir -p "$INSTALL_ROOT"
+  cd "$INSTALL_ROOT"
+
+  stub_repeated uname '-s : echo Darwin'
+  stub_repeated sw_vers '-productVersion : echo 26.6.2'
+  stub_repeated brew 'false'
+  # shellcheck disable=SC2016
+  stub_repeated make 'echo "make $(inspect_args "$@")" >> build.log'
+
+  cat > ./configure <<CON
+#!${BASH}
+echo ./configure "\$@" > build.log
+echo dup3=\${ac_cv_func_dup3-unset} >> build.log
+echo pipe2=\${ac_cv_func_pipe2-unset} >> build.log
+CON
+  chmod +x ./configure
+
+  run_inline_definition <<DEF
+build_package_standard ruby-3.4.0
+DEF
+  assert_success
+  run cat build.log
+  assert_output <<OUT
+./configure --prefix=$INSTALL_ROOT --with-ext=openssl,psych,+
+dup3=no
+pipe2=no
+make -j 2
+make install
+OUT
+
+  unstub uname
+  unstub sw_vers
+  unstub brew
+  unstub make
+}
+
+@test "dup3 and pipe2 are left to configure on macOS 27" {
+  mkdir -p "$INSTALL_ROOT"
+  cd "$INSTALL_ROOT"
+
+  stub_repeated uname '-s : echo Darwin'
+  stub_repeated sw_vers '-productVersion : echo 27.0'
+  stub_repeated brew 'false'
+  # shellcheck disable=SC2016
+  stub_repeated make 'echo "make $(inspect_args "$@")" >> build.log'
+
+  cat > ./configure <<CON
+#!${BASH}
+echo ./configure "\$@" > build.log
+echo dup3=\${ac_cv_func_dup3-unset} >> build.log
+echo pipe2=\${ac_cv_func_pipe2-unset} >> build.log
+CON
+  chmod +x ./configure
+
+  run_inline_definition <<DEF
+build_package_standard ruby-3.4.0
+DEF
+  assert_success
+  run cat build.log
+  assert_output <<OUT
+./configure --prefix=$INSTALL_ROOT --with-ext=openssl,psych,+
+dup3=unset
+pipe2=unset
+make -j 2
+make install
+OUT
+
+  unstub uname
+  unstub sw_vers
+  unstub brew
+  unstub make
+}