2 files changed, 119 insertions, 0 deletions
diff --git a/meta/recipes-devtools/meson/meson.inc b/meta/recipes-devtools/meson/meson.inc
index 4c113dcaf7..b278d33b72 100644
--- a/meta/recipes-devtools/meson/meson.inc
+++ b/meta/recipes-devtools/meson/meson.inc
@@ -11,6 +11,7 @@ SRC_URI = "https://github.com/mesonbuild/meson/releases/download/${PV}/meson-${P
            file://0003-native_bindir.patch \
            file://0004-Prettifying-some-output-with-pathlib.patch \
            file://0005-Set-the-meson-command-to-use-when-we-know-what-it-is.patch \
+           file://validate-cpu.patch \
            "
 
 SRC_URI[md5sum] = "1698f6526574839de5dcdc45e3f7d582"
diff --git a/meta/recipes-devtools/meson/meson/validate-cpu.patch b/meta/recipes-devtools/meson/meson/validate-cpu.patch
new file mode 100644
index 0000000000..8bdb204ab0
--- /dev/null
+++ b/meta/recipes-devtools/meson/meson/validate-cpu.patch
@@ -0,0 +1,118 @@
+Validate the passed CPU family (US: backport) and turn the upstream warning to
+an error (US: inappropriate).
+
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 456f7ea48503731d50a2b7287a0f198b73b4fe61 Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross@burtonini.com>
+Date: Wed, 20 Jun 2018 13:45:44 +0100
+Subject: [PATCH 1/2] Validate cpu_family (#3753)
+
+* environment: validate cpu_family in cross file
+
+* run_unittests: add unittest to ensure CPU family list in docs and environment matches
+
+* run_unittests: skip compiler options test if not in a git repository
+
+* environment: validate the detected cpu_family
+
+* docs: add 32-bit PowerPC and 32/64-bit MIPS to CPU Families table
+
+Names gathered by booting Linux in Qemu and running:
+
+$ python3
+import platform; platform.machine()
+
+Partial fix for #3751
+---
+ mesonbuild/environment.py | 24 ++++++++++++++++++++++++
+ 1 file changed, 24 insertions(+)
+
+diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
+index 6920b8d6..091d92dc 100644
+--- a/mesonbuild/environment.py
++++ b/mesonbuild/environment.py
+@@ -72,6 +72,22 @@ from .compilers import (
+ 
+ build_filename = 'meson.build'
+ 
++known_cpu_families = (
++    'aarch64',
++    'arm',
++    'e2k',
++    'ia64',
++    'mips',
++    'mips64',
++    'parisc',
++    'ppc',
++    'ppc64',
++    'ppc64le',
++    'sparc64',
++    'x86',
++    'x86_64'
++)
++
+ # Environment variables that each lang uses.
+ cflags_mapping = {'c': 'CFLAGS',
+                   'cpp': 'CXXFLAGS',
+@@ -210,6 +226,10 @@ def detect_cpu_family(compilers):
+                 pass
+         return 'x86_64'
+     # Add fixes here as bugs are reported.
++
++    if trial not in known_cpu_families:
++        mlog.warning('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % trial)
++
+     return trial
+ 
+ def detect_cpu(compilers):
+@@ -1021,6 +1041,10 @@ class CrossBuildInfo:
+                     res = eval(value, {'__builtins__': None}, {'true': True, 'false': False})
+                 except Exception:
+                     raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
++
++                if entry == 'cpu_family' and res not in known_cpu_families:
++                    mlog.warning('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % value)
++
+                 if self.ok_type(res):
+                     self.config[s][entry] = res
+                 elif isinstance(res, list):
+-- 
+2.11.0
+
+
+From 202e0199d3ffd2637f4dbee08f8351520f7dde3b Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross.burton@intel.com>
+Date: Tue, 3 Jul 2018 13:59:09 +0100
+Subject: [PATCH 2/2] Make CPU family warnings fatal
+
+---
+ mesonbuild/environment.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
+index 091d92dc..67177c1f 100644
+--- a/mesonbuild/environment.py
++++ b/mesonbuild/environment.py
+@@ -228,7 +228,7 @@ def detect_cpu_family(compilers):
+     # Add fixes here as bugs are reported.
+ 
+     if trial not in known_cpu_families:
+-        mlog.warning('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % trial)
++        raise EnvironmentException('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % trial)
+ 
+     return trial
+ 
+@@ -1043,7 +1043,7 @@ class CrossBuildInfo:
+                     raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
+ 
+                 if entry == 'cpu_family' and res not in known_cpu_families:
+-                    mlog.warning('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % value)
++                    raise EnvironmentException('Unknown CPU family %s, please report this at https://github.com/mesonbuild/meson/issues/new' % value)
+ 
+                 if self.ok_type(res):
+                     self.config[s][entry] = res
+-- 
+2.11.0
+