fixes

.github/.cspell/project-dictionary.txt

@@ -8,6 +8,7 @@ BUILDKIT
 buildpackage
 buildroot
 buildx
+chkstk
 cmodel
 crtbegin
 crtend

docker/dragonfly.Dockerfile

@@ -10,8 +10,9 @@ FROM ghcr.io/taiki-e/downloader as sysroot
 SHELL ["/bin/bash", "-eEuxo", "pipefail", "-c"]
 ARG DRAGONFLY_VERSION
 RUN mkdir -p /sysroot
-# https://mirror-master.dragonflybsd.org/iso-images
-RUN curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused "https://mirror-master.dragonflybsd.org/iso-images/dfly-x86_64-${DRAGONFLY_VERSION}_REL.iso.bz2" \
+# https://mirror-master.dragonflybsd.org/iso-images's certificate has expired...
+# https://cdimage.debian.org/mirror/dragonflybsd.org/iso-images
+RUN curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused "https://cdimage.debian.org/mirror/dragonflybsd.org/iso-images/dfly-x86_64-${DRAGONFLY_VERSION}_REL.iso.bz2" \
         | bsdtar xjf - -C /sysroot ./lib ./usr/include ./usr/lib
 
 FROM ghcr.io/taiki-e/build-base:ubuntu-"${UBUNTU_VERSION}" as builder

docker/test-base/patches/compiler_builtins+m68k-unknown-linux-gnu.diff

@@ -0,0 +1,12 @@
+diff --git a/src/mem/mod.rs b/src/mem/mod.rs
+index ccf1917..dcbbf52 100644
+--- a/src/mem/mod.rs
++++ b/src/mem/mod.rs
+@@ -130,6 +130,7 @@ fn memset_element_unordered_atomic<T>(s: *mut T, c: u8, bytes: usize)
+     }
+ }
+
++#[cfg(not(target_arch = "m68k"))]
+ intrinsics! {
+     #[cfg(target_has_atomic_load_store = "8")]
+     pub unsafe extern "C" fn __llvm_memcpy_element_unordered_atomic_1(dest: *mut u8, src: *const u8, bytes: usize) -> () {

docker/test-base/patches/libc+x86_64-unknown-dragonfly.diff

@@ -0,0 +1,51 @@
+diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
+index 78314084c..195c6cb3e 100644
+--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
++++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
+@@ -3875,11 +3875,6 @@ fn clone(&self) -> dot3Vendors {
+ // for use with fspacectl
+ pub const SPACECTL_DEALLOC: ::c_int = 1;
+
+-// For getrandom()
+-pub const GRND_NONBLOCK: ::c_uint = 0x1;
+-pub const GRND_RANDOM: ::c_uint = 0x2;
+-pub const GRND_INSECURE: ::c_uint = 0x4;
+-
+ // For realhostname* api
+ pub const HOSTNAME_FOUND: ::c_int = 0;
+ pub const HOSTNAME_INCORRECTNAME: ::c_int = 1;
+@@ -5393,8 +5388,6 @@ pub fn shm_rename(
+
+     pub fn fdatasync(fd: ::c_int) -> ::c_int;
+
+-    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
+-    pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
+     pub fn elf_aux_info(aux: ::c_int, buf: *mut ::c_void, buflen: ::c_int) -> ::c_int;
+     pub fn setproctitle_fast(fmt: *const ::c_char, ...);
+     pub fn timingsafe_bcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
+diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
+index 00a944e42..9b555e42e 100644
+--- a/src/unix/bsd/freebsdlike/mod.rs
++++ b/src/unix/bsd/freebsdlike/mod.rs
+@@ -1456,6 +1456,11 @@ fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+ pub const RB_MUTE: ::c_int = 0x10000;
+ pub const RB_SELFTEST: ::c_int = 0x20000;
+
++// For getrandom()
++pub const GRND_NONBLOCK: ::c_uint = 0x1;
++pub const GRND_RANDOM: ::c_uint = 0x2;
++pub const GRND_INSECURE: ::c_uint = 0x4;
++
+ safe_f! {
+     pub {const} fn WIFCONTINUED(status: ::c_int) -> bool {
+         status == 0x13
+@@ -1829,6 +1834,9 @@ pub fn mq_timedsend(
+         abs_timeout: *const ::timespec,
+     ) -> ::c_int;
+     pub fn mq_unlink(name: *const ::c_char) -> ::c_int;
++
++    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
++    pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
+ }
+
+ #[link(name = "util")]

docker/test/test.sh

@@ -290,6 +290,8 @@ if [[ -f /BUILD_STD ]]; then
             ;;
         # TODO(mips): LLVM bug: Undefined temporary symbol error when building std.
         mips-*-linux-* | mipsel-*-linux-*) build_mode=release ;;
+        # TODO(m68k): compiler segfault
+        m68k-*-linux-*) build_mode=release ;;
     esac
 fi
 

platform-support-status-tier3.md

@@ -75,7 +75,7 @@ See [platform-support-status.md](platform-support-status.md) for Tier 1 & Tier 2
 - [ ] i686-win7-windows-msvc
 - [ ] i686-wrs-vxworks
 - [ ] loongarch64-unknown-linux-musl
-- [ ] m68k-unknown-linux-gnu
+- [x] m68k-unknown-linux-gnu
 - [x] mips-unknown-linux-gnu
 - [x] mips-unknown-linux-musl
 - [x] mips-unknown-linux-uclibc

tools/target-list-shared.sh

@@ -21,7 +21,7 @@ linux_gnu_targets=(
     i586-unknown-linux-gnu
     i686-unknown-linux-gnu
     loongarch64-unknown-linux-gnu
-    # m68k-unknown-linux-gnu # tier3, build fail: https://github.com/rust-lang/rust/issues/89498
+    m68k-unknown-linux-gnu          # tier3, build fail: https://github.com/rust-lang/rust/issues/89498
     mips-unknown-linux-gnu          # tier3
     mips64-unknown-linux-gnuabi64   # tier3
     mips64el-unknown-linux-gnuabi64 # tier3