On Darwin, posix_madvise() has the same return semantics as plain madvise() [1]. That's not really what our usage expects. Fortunately, madvise() is available and preferred anyways so we may stop detecting posix_madvise() on Darwin.
1: https://opensource.apple.com/source/xnu/xnu-7195.81.3/bsd/man/man2/madvise.2.auto.html Signed-off-by: Michal Privoznik <mpriv...@redhat.com> --- meson.build | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/meson.build b/meson.build index 6386607144..49962cce88 100644 --- a/meson.build +++ b/meson.build @@ -2552,10 +2552,16 @@ config_host_data.set('CONFIG_OPEN_BY_HANDLE', cc.links(gnu_source_prefix + ''' #else int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); } #endif''')) -config_host_data.set('CONFIG_POSIX_MADVISE', cc.links(gnu_source_prefix + ''' - #include <sys/mman.h> - #include <stddef.h> - int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }''')) + +# On Darwin posix_madvise() has the same return semantics as plain madvise(), +# i.e. errno is set and -1 is returned. That's not really how POSIX defines the +# function. On the flip side, it has madvise() which is preferred anyways. +if host_os != 'darwin' + config_host_data.set('CONFIG_POSIX_MADVISE', cc.links(gnu_source_prefix + ''' + #include <sys/mman.h> + #include <stddef.h> + int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }''')) +endif config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_W_TID', cc.links(gnu_source_prefix + ''' #include <pthread.h> -- 2.44.1
