diff --git a/linphone.xcodeproj/project.pbxproj b/linphone.xcodeproj/project.pbxproj
index f9fb8df77..06a46ff92 100755
--- a/linphone.xcodeproj/project.pbxproj
+++ b/linphone.xcodeproj/project.pbxproj
@@ -4628,7 +4628,6 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				LIBRARY_SEARCH_PATHS = (
 					"$(BUILT_PRODUCTS_DIR)",
 					"$(SRCROOT)/liblinphone-sdk/apple-darwin/lib",
@@ -4714,7 +4713,6 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				LIBRARY_SEARCH_PATHS = (
 					"$(BUILT_PRODUCTS_DIR)",
 					"$(SRCROOT)/liblinphone-sdk/apple-darwin/lib/mediastreamer/plugins",
@@ -4800,7 +4798,6 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				LIBRARY_SEARCH_PATHS = (
 					"$(BUILT_PRODUCTS_DIR)",
 					"$(SRCROOT)/liblinphone-sdk/apple-darwin/lib/mediastreamer/plugins",
@@ -4886,7 +4883,6 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				LIBRARY_SEARCH_PATHS = (
 					"$(BUILT_PRODUCTS_DIR)",
 					"$(SRCROOT)/liblinphone-sdk/apple-darwin/lib/mediastreamer/plugins",
@@ -4982,7 +4978,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "TestsLiblinphone/LinphoneTesterTests-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5028,7 +5023,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "TestsLiblinphone/LinphoneTesterTests-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5074,7 +5068,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "TestsLiblinphone/LinphoneTesterTests-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5120,7 +5113,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "TestsLiblinphone/LinphoneTesterTests-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5173,7 +5165,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "LiblinphoneTester/LinphoneTester-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5220,7 +5211,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "LiblinphoneTester/LinphoneTester-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5267,7 +5257,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "LiblinphoneTester/LinphoneTester-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
@@ -5314,7 +5303,6 @@
 					Classes/Utils/XMLRPC/,
 				);
 				INFOPLIST_FILE = "LiblinphoneTester/LinphoneTester-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.1;
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/liblinphone-sdk/apple-darwin/lib",
diff --git a/prepare.py b/prepare.py
index e193288ba..0118d71e0 100755
--- a/prepare.py
+++ b/prepare.py
@@ -136,20 +136,29 @@ def gpl_disclaimer(platforms):
                 "\n***************************************************************************")
 
 
-def extract_libs_list():
+def extract_from_xcode_project_with_regex(regex):
     l = []
-    # name = libspeexdsp.a; path = "liblinphone-sdk/apple-darwin/lib/libspeexdsp.a"; sourceTree = "<group>"; };
-    regex = re.compile("name = (\")*(lib(\S+))\.a(\")*; path = \"liblinphone-sdk/apple-darwin/")
     f = open('linphone.xcodeproj/project.pbxproj', 'r')
     lines = f.readlines()
     f.close()
     for line in lines:
         m = regex.search(line)
         if m is not None:
-            l += [m.group(2)]
+            l += [m.group(1)]
     return list(set(l))
 
 
+def extract_deployment_target():
+    regex = re.compile("IPHONEOS_DEPLOYMENT_TARGET = (.*);")
+    return extract_from_xcode_project_with_regex(regex)[0]
+
+
+def extract_libs_list():
+    # name = libspeexdsp.a; path = "liblinphone-sdk/apple-darwin/lib/libspeexdsp.a"; sourceTree = "<group>"; };
+    regex = re.compile("name = \"*(lib\S+)\.a(\")*; path = \"liblinphone-sdk/apple-darwin/")
+    return extract_from_xcode_project_with_regex(regex)
+
+
 missing_dependencies = {}
 
 
@@ -521,6 +530,7 @@ def main(argv=None):
     if check_tools() != 0:
         return 1
 
+    additional_args += ["-DLINPHONE_IOS_DEPLOYMENT_TARGET=" + extract_deployment_target()]
     additional_args += ["-DLINPHONE_BUILDER_DUMMY_LIBRARIES=" + ' '.join(extract_libs_list())]
     if args.debug_verbose is True:
         additional_args += ["-DENABLE_DEBUG_LOGS=YES"]
diff --git a/submodules/belle-sip b/submodules/belle-sip
index c93a01615..ccad67c61 160000
--- a/submodules/belle-sip
+++ b/submodules/belle-sip
@@ -1 +1 @@
-Subproject commit c93a01615811bccdcfbc65aad7247babd1356d72
+Subproject commit ccad67c61fdcd202f7ae02eda4142bbaf3add1c1
diff --git a/submodules/cmake-builder b/submodules/cmake-builder
index 3c0a669dd..3496824d2 160000
--- a/submodules/cmake-builder
+++ b/submodules/cmake-builder
@@ -1 +1 @@
-Subproject commit 3c0a669ddb8af68fc1253ba21d521051f48ee79a
+Subproject commit 3496824d2c6fe7f3e0a5acd8dca02569d6ef16bd