Experimental support for building with Clang under Linux.

Skip building file I/O files as these are currently Windows only.

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "cake"]
 	path = tools/cake
 	url = https://github.com/lewissbaker/cake.git
-	branch = master
+	branch = clang

config.cake

@@ -145,3 +145,65 @@ if cake.system.isWindows() or cake.system.isCygwin():
 
     except CompilerNotFoundError, e:
       print str(e)
+
+elif cake.system.isLinux():
+
+  from cake.library.compilers.clang import ClangCompiler
+
+  clangVariant = baseVariant.clone(compiler='clang',
+                                   platform='linux',
+                                   architecture='x64')
+
+  compiler = ClangCompiler(
+    configuration=configuration,
+    clangExe='/usr/bin/clang-5.0',
+    llvmArExe='/usr/bin/llvm-ar-5.0',
+    binPaths=['/usr/bin'])
+
+  compiler.addCppFlag('-std=c++1z')
+  compiler.addCppFlag('-fcoroutines-ts')
+  compiler.addCppFlag('-m64')
+
+  # Set this to the install-prefix of where libc++-5.0 is installed.
+  libCxxInstallPrefix = None # '/path/to/install'
+
+  if libCxxInstallPrefix:
+    compiler.addCppFlag('-nostdinc++')
+    compiler.addIncludePath(cake.path.join(
+      libCxxInstallPrefix, 'include', 'c++', 'v1'))
+    compiler.addLibraryPath(cake.path.join(
+      libCxxInstallPrefix, 'lib'))
+  else:
+    compiler.addCppFlag('-stdlib=libc++')
+
+  compiler.addLibrary('c++')
+  compiler.addLibrary('c++abi')
+  compiler.addLibrary('c')
+  compiler.addLibrary('pthread')
+  
+  #compiler.addProgramFlag('-Wl,--trace')
+  #compiler.addProgramFlag('-Wl,-v')
+  
+  clangVariant.tools['compiler'] = compiler
+
+  env = clangVariant.tools["env"]
+  env["COMPILER"] = "clang"
+  env["COMPILER_VERSION"] = "5.0"
+  env["PLATFORM"] = "linux"
+  env["ARCHITECTURE"] = "x64"
+
+  clangDebugVariant = clangVariant.clone(release='debug')
+  clangDebugVariant.tools["env"]["RELEASE"] = 'debug'
+  
+  # TODO: Configure debug-specific settings here
+  compiler = clangDebugVariant.tools["compiler"]
+  
+  configuration.addVariant(clangDebugVariant)
+
+  clangOptimisedVariant = clangVariant.clone(release='optimised')
+  clangOptimisedVariant.tools["env"]["RELEASE"] = 'optimised'
+
+  # TODO: Configure optimised-specific settings here
+  compiler = clangOptimisedVariant.tools["compiler"]
+  
+  configuration.addVariant(clangOptimisedVariant)

lib/build.cake

@@ -50,15 +50,6 @@ sources = script.cwd([
   'cancellation_token.cpp',
   'cancellation_source.cpp',
   'cancellation_registration.cpp',
-  'io_service.cpp',
-  'file.cpp',
-  'readable_file.cpp',
-  'writable_file.cpp',
-  'read_only_file.cpp',
-  'write_only_file.cpp',
-  'read_write_file.cpp',
-  'file_read_operation.cpp',
-  'file_write_operation.cpp',
   ])
 
 extras = script.cwd([
@@ -72,6 +63,15 @@ if variant.platform == "windows":
     ]))
   sources.extend(script.cwd([
     'win32.cpp',
+    'io_service.cpp',
+    'file.cpp',
+    'readable_file.cpp',
+    'writable_file.cpp',
+    'read_only_file.cpp',
+    'write_only_file.cpp',
+    'read_write_file.cpp',
+    'file_read_operation.cpp',
+    'file_write_operation.cpp',
     ]))
 
 buildDir = env.expand('${CPPCORO_BUILD}')

test/build.cake

@@ -27,10 +27,14 @@ sources = script.cwd([
   'shared_lazy_task_tests.cpp',
   'shared_task_tests.cpp',
   'task_tests.cpp',
-  'io_service_tests.cpp',
-  'file_tests.cpp',
 ])
 
+if variant.platform == 'windows':
+  sources += script.cwd([
+    'io_service_tests.cpp',
+    'file_tests.cpp',
+    ])
+
 extras = script.cwd([
   'build.cake',
 ])

tools/cake

@@ -1 +1 @@
-Subproject commit ccb64fd82ea829cdda5f2053edccc70346c5125a
+Subproject commit e63b4cb5dd0936c776e10f0d43e4f5855516acbd