1 files changed, 52 insertions, 0 deletions
diff --git a/net-libs/grpc/files/0008-grpc-1.12.1-allow-system-cares.patch b/net-libs/grpc/files/0008-grpc-1.12.1-allow-system-cares.patch
new file mode 100644
index 000000000000..c2e20f3994f4
--- /dev/null
+++ b/net-libs/grpc/files/0008-grpc-1.12.1-allow-system-cares.patch
@@ -0,0 +1,52 @@
+From 78a6e04ec1efc2dc839f0329dcff732940e27fd9 Mon Sep 17 00:00:00 2001
+From: Thomas Bechtold <tbechtold@suse.com>
+Date: Fri, 25 May 2018 07:08:05 +0200
+Subject: [PATCH] Allow building the python module with system cares
+
+When building the python module and using the new
+GRPC_PYTHON_BUILD_SYSTEM_CARES env variable, the third party cares code
+is not compiled. Instead, the cares shared library installed on the
+system is used during runtime.
+This is useful for distributions who don't want to include code copies
+but use shared libraries instead.
+---
+ setup.py | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/setup.py b/setup.py
+index 483d3ac1682..43c25aafeb9 100644
+--- a/setup.py
++++ b/setup.py
+@@ -96,6 +96,12 @@
+ BUILD_WITH_SYSTEM_ZLIB = os.environ.get('GRPC_PYTHON_BUILD_SYSTEM_ZLIB',
+                                         False)
+ 
++# Export this variable to use the system installation of cares. You need to
++# have the header files installed (in /usr/include/) and during
++# runtime, the shared libary must be installed
++BUILD_WITH_SYSTEM_CARES = os.environ.get('GRPC_PYTHON_BUILD_SYSTEM_CARES',
++                                         False)
++
+ # Environment variable to determine whether or not to enable coverage analysis
+ # in Cython modules.
+ ENABLE_CYTHON_TRACING = os.environ.get(
+@@ -169,6 +175,10 @@
+   CORE_C_FILES = filter(lambda x: 'third_party/zlib' not in x, CORE_C_FILES)
+   ZLIB_INCLUDE = (os.path.join('/usr', 'include'),)
+ 
++if BUILD_WITH_SYSTEM_CARES:
++  CORE_C_FILES = filter(lambda x: 'third_party/cares' not in x, CORE_C_FILES)
++  CARES_INCLUDE = (os.path.join('/usr', 'include'),)
++
+ EXTENSION_INCLUDE_DIRECTORIES = (
+     (PYTHON_STEM,) + CORE_INCLUDE + SSL_INCLUDE + ZLIB_INCLUDE +
+     CARES_INCLUDE + ADDRESS_SORTING_INCLUDE)
+@@ -184,6 +194,8 @@
+   EXTENSION_LIBRARIES += ('ssl', 'crypto',)
+ if BUILD_WITH_SYSTEM_ZLIB:
+   EXTENSION_LIBRARIES += ('z',)
++if BUILD_WITH_SYSTEM_CARES:
++  EXTENSION_LIBRARIES += ('cares',)
+ 
+ DEFINE_MACROS = (
+     ('OPENSSL_NO_ASM', 1), ('_WIN32_WINNT', 0x600),