Index: ObjFW.xcodeproj/project.pbxproj
==================================================================
--- ObjFW.xcodeproj/project.pbxproj
+++ ObjFW.xcodeproj/project.pbxproj
@@ -118,10 +118,16 @@
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 		4B187E62163EA46D0049A832 /* ObjFW.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4B3D23761337FBC800DD29B8 /* ObjFW.framework */; };
+		4B2227A71D4FE23700A41CD3 /* atomic_builtins.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A11D4FE23700A41CD3 /* atomic_builtins.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		4B2227A81D4FE23700A41CD3 /* atomic_no_threads.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A21D4FE23700A41CD3 /* atomic_no_threads.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		4B2227A91D4FE23700A41CD3 /* atomic_osatomic.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A31D4FE23700A41CD3 /* atomic_osatomic.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		4B2227AA1D4FE23700A41CD3 /* atomic_powerpc.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A41D4FE23700A41CD3 /* atomic_powerpc.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		4B2227AB1D4FE23700A41CD3 /* atomic_sync_builtins.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A51D4FE23700A41CD3 /* atomic_sync_builtins.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		4B2227AC1D4FE23700A41CD3 /* atomic_x86.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B2227A61D4FE23700A41CD3 /* atomic_x86.h */; settings = {ATTRIBUTES = (Public, ); }; };
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@@ -659,10 +665,16 @@
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 		4B19023D1338D6D5000374C9 /* Makefile */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.make; name = Makefile; path = tests/Makefile; sourceTree = "<group>"; };
+		4B2227A11D4FE23700A41CD3 /* atomic_builtins.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = atomic_builtins.h; path = src/atomic_builtins.h; sourceTree = "<group>"; };
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+		4B2227A31D4FE23700A41CD3 /* atomic_osatomic.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = atomic_osatomic.h; path = src/atomic_osatomic.h; sourceTree = "<group>"; };
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+		4B2227A61D4FE23700A41CD3 /* atomic_x86.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = atomic_x86.h; path = src/atomic_x86.h; sourceTree = "<group>"; };
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@@ -1539,10 +1551,16 @@
 				4B8B025717BBA7C7009ED983 /* OFZIPArchiveEntry.h */,
 				4B8B025817BBA7C7009ED983 /* OFZIPArchiveEntry.m */,
 				4B6C8AD717BD5C2E00B194F2 /* OFZIPArchiveEntry+Private.h */,
 				4B6AF97310A8D4450003FB0A /* ObjFW.h */,
 				4BBA36C411406AB700CBA3AC /* atomic.h */,
+				4B2227A11D4FE23700A41CD3 /* atomic_builtins.h */,
+				4B2227A21D4FE23700A41CD3 /* atomic_no_threads.h */,
+				4B2227A31D4FE23700A41CD3 /* atomic_osatomic.h */,
+				4B2227A41D4FE23700A41CD3 /* atomic_powerpc.h */,
+				4B2227A51D4FE23700A41CD3 /* atomic_sync_builtins.h */,
+				4B2227A61D4FE23700A41CD3 /* atomic_x86.h */,
 				4BA9CFA315E129D30076DC74 /* autorelease.h */,
 				4B3D236D1337FB5800DD29B8 /* base64.h */,
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@@ -1793,10 +1811,16 @@
 				4B48B95414DC23B100546D39 /* OFXMLProcessingInstructions.h in Headers */,
 				4BE52D2117B990B4005958D1 /* OFZIPArchive.h in Headers */,
 				4B8B025917BBA7C7009ED983 /* OFZIPArchiveEntry.h in Headers */,
 				4B3D23E41337FCB000DD29B8 /* ObjFW.h in Headers */,
 				4B3D23E61337FCB000DD29B8 /* atomic.h in Headers */,
+				4B2227A71D4FE23700A41CD3 /* atomic_builtins.h in Headers */,
+				4B2227A81D4FE23700A41CD3 /* atomic_no_threads.h in Headers */,
+				4B2227A91D4FE23700A41CD3 /* atomic_osatomic.h in Headers */,
+				4B2227AA1D4FE23700A41CD3 /* atomic_powerpc.h in Headers */,
+				4B2227AB1D4FE23700A41CD3 /* atomic_sync_builtins.h in Headers */,
+				4B2227AC1D4FE23700A41CD3 /* atomic_x86.h in Headers */,
 				4BA9CFA415E129D30076DC74 /* autorelease.h in Headers */,
 				4B3D23E71337FCB000DD29B8 /* base64.h in Headers */,
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 				4B837D7A16829C5F007A3E83 /* instance.h in Headers */,