aix: fix cpu family detection

Like the BSDs, AIX does not return anything useful in platform.machine().

mesonbuild/environment.py

@@ -337,7 +337,7 @@ def detect_cpu_family(compilers: CompilersDict) -> str:
     """
     if mesonlib.is_windows():
         trial = detect_windows_arch(compilers)
-    elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd() or mesonlib.is_qnx():
+    elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd() or mesonlib.is_qnx() or mesonlib.is_aix():
         trial = platform.processor().lower()
     else:
         trial = platform.machine().lower()
@@ -377,6 +377,10 @@ def detect_cpu_family(compilers: CompilersDict) -> str:
         # ATM there is no 64 bit userland for PA-RISC. Thus always
         # report it as 32 bit for simplicity.
         trial = 'parisc'
+    elif trial == 'ppc':
+        # AIX always returns powerpc, check here for 64-bit
+        if any_compiler_has_define(compilers, '__64BIT__'):
+            trial = 'ppc64'
 
     if trial not in known_cpu_families:
         mlog.warning('Unknown CPU family {!r}, please report this at '
@@ -388,7 +392,7 @@ def detect_cpu_family(compilers: CompilersDict) -> str:
 def detect_cpu(compilers: CompilersDict):
     if mesonlib.is_windows():
         trial = detect_windows_arch(compilers)
-    elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd():
+    elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd() or mesonlib.is_aix():
         trial = platform.processor().lower()
     else:
         trial = platform.machine().lower()

mesonbuild/mesonlib.py

@@ -530,6 +530,9 @@ def is_hurd() -> bool:
 def is_qnx() -> bool:
     return platform.system().lower() == 'qnx'
 
+def is_aix() -> bool:
+    return platform.system().lower() == 'aix'
+
 def exe_exists(arglist: T.List[str]) -> bool:
     try:
         if subprocess.run(arglist, timeout=10).returncode == 0: