I am compiling mpich 4.2.0 on a MacBook Air Apple M1 running macOS Sonoma 14.3.1. I am using gcc and gfortran versions 13.2.0. I get the following errors when I build MPICH:

/Applications/Xcode.app/Contents/Developer/usr/bin/make all-am

depbase=`echo util/info.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\

gcc -DHAVE_CONFIG_H -I. -I./include -D_GNU_SOURCE -D__USE_XOPEN2K8 -DSYSCONFDIR=\"/Users/douglasdommermuth/mpich2/mpich2-install/etc\" -DRDMADIR=\"@rdmadir@\" -DPROVDLDIR=\"/Users/douglasdommermuth/mpich2/mpich2-install/lib/libfabric\" -I./prov/sockets/include -I./prov/sockets -Wall -O2 -DNDEBUG -MT util/info.o -MD -MP -MF $depbase.Tpo -c -o util/info.o util/info.c &&\

mv -f $depbase.Tpo $depbase.Po

In file included from ./include/osx/osd.h:182,

from ./include/ofi_osd.h:60,

from util/info.c:38:

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/os/lock.h:114:33: error: expected declaration specifiers or ‘...’ before string constant

114 | OS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use OSAllocatedUnfairLock.performWhileLocked() for async-safe scoped locking")

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/os/lock.h:140:33: error: expected declaration specifiers or ‘...’ before string constant

140 | OS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use OSAllocatedUnfairLock.tryPerformWhileLocked() for async-safe scoped locking")

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/os/lock.h:154:33: error: expected declaration specifiers or ‘...’ before string constant

154 | OS_SWIFT_UNAVAILABLE_FROM_ASYNC("Use OSAllocatedUnfairLock.performWhileLocked() for async-safe scoped locking")

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

./include/osx/osd.h: In function ‘pthread_spin_lock’:

./include/osx/osd.h:194:9: warning: implicit declaration of function ‘os_unfair_lock_lock’ [-Wimplicit-function-declaration]

194 | os_unfair_lock_lock(lock);

| ^~~~~~~~~~~~~~~~~~~

./include/osx/osd.h: In function ‘pthread_spin_unlock’:

./include/osx/osd.h:200:9: warning: implicit declaration of function ‘os_unfair_lock_unlock’ [-Wimplicit-function-declaration]

200 | os_unfair_lock_unlock(lock);

| ^~~~~~~~~~~~~~~~~~~~~

./include/osx/osd.h: In function ‘pthread_spin_trylock’:

./include/osx/osd.h:206:16: warning: implicit declaration of function ‘os_unfair_lock_trylock’ [-Wimplicit-function-declaration]

206 | return os_unfair_lock_trylock(lock) ? 0 : EBUSY;

| ^~~~~~~~~~~~~~~~~~~~~~

make[3]: *** [util/info.o] Error 1

make[2]: *** [all] Error 2

make[1]: *** [all-recursive] Error 1

make: *** [all] Error 2

It looks like errors in macOS’s command line tools. I don’t know how to circumvent the problem. Various text and log files are attached in mpich2.tar.gz. A copy of the lock.h code is also included in the zip file.

Thank you, Doug.