Compilation failure on Alpine Linux

[pitrou]

In Arrow C++ we're trying to bump our bundled version of mimalloc, and it turns out mimalloc 2.2.3 fails compiling on Alpine Linux with the following error:

[1/17] Building C object CMakeFiles/mimalloc-static.dir/src/prim/prim.c.o
[2/17] Building C object CMakeFiles/mimalloc-static.dir/src/stats.c.o
[3/17] Building C object CMakeFiles/mimalloc-static.dir/src/segment-map.c.o
[4/17] Building C object CMakeFiles/mimalloc-static.dir/src/segment.c.o
[5/17] Building C object CMakeFiles/mimalloc-static.dir/src/random.c.o
In file included from /build/cpp/mimalloc_ep-prefix/src/mimalloc_ep/src/prim/unix/prim.c:36,
                 from /build/cpp/mimalloc_ep-prefix/src/mimalloc_ep/src/prim/prim.c:25:
/usr/include/sys/prctl.h:88:8: error: redefinition of 'struct prctl_mm_map'
   88 | struct prctl_mm_map {
      |        ^~~~~~~~~~~~
In file included from /build/cpp/mimalloc_ep-prefix/src/mimalloc_ep/src/prim/unix/prim.c:34:
/usr/include/linux/prctl.h:134:8: note: originally defined here
  134 | struct prctl_mm_map {
      |        ^~~~~~~~~~~~

[pitrou]

It seems other projects have simply removed their explicit inclusion of linux/prctl.h:
seccomp/libseccomp@faf6919
dvarrazzo/py-setproctitle@3fd40a1

[BlackDex]

I have the same issue with my rust-musl build container since this morning. This is because the mimalloc crate updated to v2.2.3. And since Alpine is musl based it's probably related.

I have the same errors:

  cargo:warning=In file included from c_src/mimalloc/src/prim/unix/prim.c:36,
  cargo:warning=                 from c_src/mimalloc/src/prim/prim.c:25,
  cargo:warning=                 from c_src/mimalloc/src/static.c:38:
  cargo:warning=/usr/local/musl/x86_64-unknown-linux-musl/include/sys/prctl.h:88:8: error: redefinition of 'struct prctl_mm_map'
  cargo:warning=   88 | struct prctl_mm_map {
  cargo:warning=      |        ^~~~~~~~~~~~
  cargo:warning=In file included from c_src/mimalloc/src/prim/unix/prim.c:34,
  cargo:warning=                 from c_src/mimalloc/src/prim/prim.c:25,
  cargo:warning=                 from c_src/mimalloc/src/static.c:38:
  cargo:warning=/usr/local/musl/x86_64-unknown-linux-musl/include/linux/prctl.h:134:8: note: originally defined here
  cargo:warning=  134 | struct prctl_mm_map {
  cargo:warning=      |        ^~~~~~~~~~~~

[BlackDex]

As a reference from my builds: https://github.com/BlackDex/rust-musl/actions/runs/14239853511

[zonyitoo]

This could also be found from build for platform aarch64-unknown-linux-musl:

warning: libmimalloc-sys@0.1.41: In file included from c_src/mimalloc/src/prim/unix/prim.c:36,
warning: libmimalloc-sys@0.1.41:                  from c_src/mimalloc/src/prim/prim.c:25,
warning: libmimalloc-sys@0.1.41:                  from c_src/mimalloc/src/static.c:38:
warning: libmimalloc-sys@0.1.41: /usr/local/aarch64-linux-musl/include/sys/prctl.h:88:8: error: redefinition of 'struct prctl_mm_map'
warning: libmimalloc-sys@0.1.41:    88 | struct prctl_mm_map {
warning: libmimalloc-sys@0.1.41:       |        ^~~~~~~~~~~~
warning: libmimalloc-sys@0.1.41: In file included from c_src/mimalloc/src/prim/unix/prim.c:34,
warning: libmimalloc-sys@0.1.41:                  from c_src/mimalloc/src/prim/prim.c:25,
warning: libmimalloc-sys@0.1.41:                  from c_src/mimalloc/src/static.c:38:
warning: libmimalloc-sys@0.1.41: /usr/local/aarch64-linux-musl/include/linux/prctl.h:134:8: note: originally defined here
warning: libmimalloc-sys@0.1.41:   134 | struct prctl_mm_map {
warning: libmimalloc-sys@0.1.41:       |        ^~~~~~~~~~~~
warning: libmimalloc-sys@0.1.41: In file included from c_src/mimalloc/src/static.c:37:
warning: libmimalloc-sys@0.1.41: c_src/mimalloc/src/stats.c:221:13: warning: 'mi_stat_total_print' defined but not used [-Wunused-function]
warning: libmimalloc-sys@0.1.41:   221 | static void mi_stat_total_print(const mi_stat_count_t* stat, const char* msg, int64_t unit, mi_output_fun* out, void* arg) {
warning: libmimalloc-sys@0.1.41:       |             ^~~~~~~~~~~~~~~~~~~
error: failed to run custom build command for `libmimalloc-sys v0.1.41`

[Mon-ius]

same after April FOOLS, 2025 🤗

[calvin2021y]

any one work on this.

@daanx

[jirutka]

I’m maintainer of the mimalloc2 package in Alpine Linux. I also run into this error when bumping the mimalloc2 package to 2.2.3 and resolved it by removing #include <linux/prctl.h> as @pitrou suggested.