From: Barry Warsaw <barry@python.org>
Date: Thu, 7 Apr 2011 15:28:11 +0000 (-0400)
Subject: Backport for Python 2.7 of issue 11715 support for building Python on
X-Git-Tag: v2.7.2rc1~181
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ffc9caf9fefe511b1469d1f6de64ddc420a2b949;p=python

Backport for Python 2.7 of issue 11715 support for building Python on
multiarch Debian/Ubuntu.
---

diff --git a/setup.py b/setup.py
index 38f21d8c66..6b47451bed 100644
--- a/setup.py
+++ b/setup.py
@@ -345,10 +345,33 @@ class PyBuildExt(build_ext):
                 return platform
         return sys.platform
 
+    def add_multiarch_paths(self):
+        # Debian/Ubuntu multiarch support.
+        # https://wiki.ubuntu.com/MultiarchSpec
+        if not find_executable('dpkg-architecture'):
+            return
+        tmpfile = os.path.join(self.build_temp, 'multiarch')
+        if not os.path.exists(self.build_temp):
+            os.makedirs(self.build_temp)
+        ret = os.system(
+            'dpkg-architecture -qDEB_HOST_MULTIARCH > %s 2> /dev/null' %
+            tmpfile)
+        try:
+            if ret >> 8 == 0:
+                with open(tmpfile) as fp:
+                    multiarch_path_component = fp.readline().strip()
+                add_dir_to_list(self.compiler.library_dirs,
+                                '/usr/lib/' + multiarch_path_component)
+                add_dir_to_list(self.compiler.include_dirs,
+                                '/usr/include/' + multiarch_path_component)
+        finally:
+            os.unlink(tmpfile)
+
     def detect_modules(self):
         # Ensure that /usr/local is always used
         add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
         add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
+        self.add_multiarch_paths()
 
         # Add paths specified in the environment variables LDFLAGS and
         # CPPFLAGS for header and library files.