serf: Fix Sconstruct build with python 3.7

These patches will be needed to build serf on hosts with
python 3.7+

(From OE-Core rev: ab0be544b392bbd6cb1dc91edd5fe8563d7de393)

(From OE-Core rev: ffe1795dc6daf9999e1be858a4e97a4c2cf44526)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/serf/serf/0001-Fix-syntax-of-a-print-in-the-scons-file-to-unbreak-b.patch

@@ -0,0 +1,29 @@
+From 99f6e1b0d68281b63218d6adfe68cd9e331ac5be Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 3 Sep 2018 10:50:08 -0700
+Subject: [PATCH] Fix syntax of a print() in the scons file to unbreak building
+ with most recent scons version.
+
+* SConstruct Use Python 3.0 valid syntax to make Scons 3.0.0 happy on both python
+  3.0 and 2.7.
+
+Upstream-Status: Backport
+[https://svn.apache.org/viewvc/serf/trunk/SConstruct?r1=1809132&r2=1811083&diff_format=h]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ SConstruct | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/SConstruct b/SConstruct
+index 1670459..18a45fa 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -184,7 +184,7 @@ CALLOUT_OKAY = not (env.GetOption('clean') or env.GetOption('help'))
+ 
+ unknown = opts.UnknownVariables()
+ if unknown:
+-  print 'Warning: Used unknown variables:', ', '.join(unknown.keys())
++  print('Warning: Used unknown variables:', ', '.join(unknown.keys()))
+ 
+ apr = str(env['APR'])
+ apu = str(env['APU'])

meta/recipes-support/serf/serf/0002-SConstruct-Fix-path-quoting-for-.def-generator.patch

@@ -0,0 +1,27 @@
+From e51b4b37916dd20b13133cb7af16601b6bf3ace9 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 3 Sep 2018 10:54:54 -0700
+Subject: [PATCH] SConstruct: Fix path quoting for .def generator
+
+Patch by: Martin Keller <m.keller{_AT_}codesys.com>
+Upstream-Status: Backport
+[https://svn.apache.org/viewvc/serf/trunk/SConstruct?r1=1807594&r2=1809132]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ SConstruct | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/SConstruct b/SConstruct
+index 18a45fa..571bdce 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -160,7 +160,7 @@ env = Environment(variables=opts,
+ 
+ env.Append(BUILDERS = {
+     'GenDef' : 
+-      Builder(action = sys.executable + ' build/gen_def.py $SOURCES > $TARGET',
++      Builder(action = '"%s" "%s" $SOURCES > $TARGET' % (sys.executable, gen_def_script,),
+               suffix='.def', src_suffix='.h')
+   })
+ 

meta/recipes-support/serf/serf/0003-gen_def.patch

@@ -0,0 +1,22 @@
+From 98e793d9f2250e7c1f9f1eb5dfd616a6a8829e9a Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 3 Sep 2018 11:12:27 -0700
+Subject: [PATCH] gen_def
+
+---
+ SConstruct | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/SConstruct b/SConstruct
+index 571bdce..877731e 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -158,6 +158,8 @@ env = Environment(variables=opts,
+                   ENV = os.environ,
+                   )
+ 
++gen_def_script = env.File('build/gen_def.py').rstr()
++
+ env.Append(BUILDERS = {
+     'GenDef' : 
+       Builder(action = '"%s" "%s" $SOURCES > $TARGET' % (sys.executable, gen_def_script,),

meta/recipes-support/serf/serf/0004-Follow-up-to-r1811083-fix-building-with-scons-3.0.0-.patch

@@ -0,0 +1,29 @@
+From 565211fd082ef653ca9c44a345350fc1451f5a0f Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 3 Sep 2018 11:12:38 -0700
+Subject: [PATCH] Follow-up to r1811083 fix building with scons 3.0.0 and
+ Python3
+
+* SConstruct: Append decode('utf-8) to FILE.get_contents() to avoid
+  TypeError: cannot use a string pattern on a bytes-like object
+
+Upstream-Status: Backport
+[https://svn.apache.org/viewvc/serf/trunk/SConstruct?r1=1811088&r2=1814604]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ SConstruct | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/SConstruct b/SConstruct
+index 877731e..7678bb1 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -169,7 +169,7 @@ env.Append(BUILDERS = {
+ match = re.search('SERF_MAJOR_VERSION ([0-9]+).*'
+                   'SERF_MINOR_VERSION ([0-9]+).*'
+                   'SERF_PATCH_VERSION ([0-9]+)',
+-                  env.File('serf.h').get_contents(),
++                  env.File('serf.h').get_contents().decode('utf-8'),
+                   re.DOTALL)
+ MAJOR, MINOR, PATCH = [int(x) for x in match.groups()]
+ env.Append(MAJOR=str(MAJOR))

meta/recipes-support/serf/serf_1.3.9.bb

@@ -1,7 +1,12 @@
 SUMMARY = "High-Performance Asynchronous HTTP Client Library"
 SRC_URI = "${APACHE_MIRROR}/${BPN}/${BPN}-${PV}.tar.bz2 \
            file://norpath.patch \
-           file://env.patch"
+           file://env.patch \
+           file://0001-Fix-syntax-of-a-print-in-the-scons-file-to-unbreak-b.patch \
+           file://0002-SConstruct-Fix-path-quoting-for-.def-generator.patch \
+           file://0003-gen_def.patch \
+           file://0004-Follow-up-to-r1811083-fix-building-with-scons-3.0.0-.patch \
+           "
 
 SRC_URI[md5sum] = "370a6340ff20366ab088012cd13f2b57"
 SRC_URI[sha256sum] = "549c2d21c577a8a9c0450facb5cca809f26591f048e466552240947bdf7a87cc"