Xcode: Detect the compiler id and tool location

Configure a hand-generated Xcode project to build the compiler id source
file since we cannot run the compiler command-line tool directly.  Add a
post-build shell script phase to print out the compiler toolset build
setting.  Run xcodebuild to compile the identification binary.  Parse
the full path to the compiler tool from the xcodebuild output.

3 files changed, 346 insertions, 0 deletions

diff --git a/Modules/CompilerId/Xcode-1.pbxproj.in b/Modules/CompilerId/Xcode-1.pbxproj.in
new file mode 100644
index 0000000..f06960f
--- /dev/null
+++ b/Modules/CompilerId/Xcode-1.pbxproj.in
@@ -0,0 +1,120 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 39;
+	objects = {
+		014CEA460018CE2711CA2923 = {
+			buildSettings = {
+			};
+			isa = PBXBuildStyle;
+			name = Development;
+		};
+		08FB7793FE84155DC02AAC07 = {
+			buildSettings = {
+			};
+			buildStyles = (
+				014CEA460018CE2711CA2923,
+			);
+			hasScannedForEncodings = 1;
+			isa = PBXProject;
+			mainGroup = 08FB7794FE84155DC02AAC07;
+			projectDirPath = "";
+			targets = (
+				8DD76FA90486AB0100D96B5E,
+			);
+		};
+		08FB7794FE84155DC02AAC07 = {
+			children = (
+				08FB7795FE84155DC02AAC07,
+				1AB674ADFE9D54B511CA2CBB,
+			);
+			isa = PBXGroup;
+			name = CompilerId@id_lang@;
+			refType = 4;
+			sourceTree = "<group>";
+		};
+		08FB7795FE84155DC02AAC07 = {
+			children = (
+				2C18F0B415DC1DC700593670,
+			);
+			isa = PBXGroup;
+			name = Source;
+			refType = 4;
+			sourceTree = "<group>";
+		};
+		1AB674ADFE9D54B511CA2CBB = {
+			children = (
+				8DD76F6C0486A84900D96B5E,
+			);
+			isa = PBXGroup;
+			name = Products;
+			refType = 4;
+			sourceTree = "<group>";
+		};
+		2C18F0B415DC1DC700593670 = {
+			fileEncoding = 30;
+			isa = PBXFileReference;
+			lastKnownFileType = @id_type@;
+			path = @id_src@;
+			refType = 4;
+			sourceTree = "<group>";
+		};
+		2C18F0B615DC1E0300593670 = {
+			fileRef = 2C18F0B415DC1DC700593670;
+			isa = PBXBuildFile;
+			settings = {
+			};
+		};
+		2C8FEB8E15DC1A1A00E56A5D = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "echo \"GCC_VERSION=$GCC_VERSION\"";
+		};
+		8DD76FA90486AB0100D96B5E = {
+			buildPhases = (
+				2C18F0B515DC1DCE00593670,
+				2C8FEB8E15DC1A1A00E56A5D,
+			);
+			buildRules = (
+			);
+			buildSettings = {
+				PRODUCT_NAME = CompilerId@id_lang@;
+				SYMROOT = .;
+			};
+			dependencies = (
+			);
+			isa = PBXNativeTarget;
+			name = CompilerId@id_lang@;
+			productName = CompilerId@id_lang@;
+			productReference = 8DD76F6C0486A84900D96B5E;
+			productType = "com.apple.product-type.tool";
+		};
+		2C18F0B515DC1DCE00593670 = {
+			buildActionMask = 2147483647;
+			files = (
+				2C18F0B615DC1E0300593670,
+			);
+			isa = PBXSourcesBuildPhase;
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		8DD76F6C0486A84900D96B5E = {
+			explicitFileType = "compiled.mach-o.executable";
+			includeInIndex = 0;
+			isa = PBXFileReference;
+			path = CompilerId@id_lang@;
+			refType = 3;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+	};
+	rootObject = 08FB7793FE84155DC02AAC07;
+}
diff --git a/Modules/CompilerId/Xcode-2.pbxproj.in b/Modules/CompilerId/Xcode-2.pbxproj.in
new file mode 100644
index 0000000..e3c7aa9
--- /dev/null
+++ b/Modules/CompilerId/Xcode-2.pbxproj.in
@@ -0,0 +1,119 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 42;
+	objects = {
+
+		2C18F0B615DC1E0300593670 = {isa = PBXBuildFile; fileRef = 2C18F0B415DC1DC700593670; };
+		2C18F0B415DC1DC700593670 = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = @id_type@; path = @id_src@; sourceTree = "<group>"; };
+		8DD76F6C0486A84900D96B5E = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = CompilerId@id_lang@; sourceTree = BUILT_PRODUCTS_DIR; };
+
+		08FB7794FE84155DC02AAC07 = {
+			isa = PBXGroup;
+			children = (
+				08FB7795FE84155DC02AAC07,
+				1AB674ADFE9D54B511CA2CBB,
+			);
+			name = CompilerId@id_lang@;
+			sourceTree = "<group>";
+		};
+		08FB7795FE84155DC02AAC07 = {
+			isa = PBXGroup;
+			children = (
+				2C18F0B415DC1DC700593670,
+			);
+			name = Source;
+			sourceTree = "<group>";
+		};
+		1AB674ADFE9D54B511CA2CBB = {
+			isa = PBXGroup;
+			children = (
+				8DD76F6C0486A84900D96B5E,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+
+		8DD76FA90486AB0100D96B5E = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 1DEB928508733DD80010E9CD;
+			buildPhases = (
+				2C18F0B515DC1DCE00593670,
+				2C8FEB8E15DC1A1A00E56A5D,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = CompilerId@id_lang@;
+			productName = CompilerId@id_lang@;
+			productReference = 8DD76F6C0486A84900D96B5E;
+			productType = "com.apple.product-type.tool";
+		};
+		08FB7793FE84155DC02AAC07 = {
+			isa = PBXProject;
+			buildConfigurationList = 1DEB928908733DD80010E9CD;
+			hasScannedForEncodings = 1;
+			mainGroup = 08FB7794FE84155DC02AAC07;
+			projectDirPath = "";
+			targets = (
+				8DD76FA90486AB0100D96B5E,
+			);
+		};
+		2C8FEB8E15DC1A1A00E56A5D = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "echo \"GCC_VERSION=$GCC_VERSION\"";
+		};
+		2C18F0B515DC1DCE00593670 = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				2C18F0B615DC1E0300593670,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		1DEB928608733DD80010E9CD = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				PRODUCT_NAME = CompilerId@id_lang@;
+			};
+			name = Debug;
+		};
+		1DEB928A08733DD80010E9CD = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CONFIGURATION_BUILD_DIR = "$(BUILD_DIR)";
+				SYMROOT = .;
+			};
+			name = Debug;
+		};
+		1DEB928508733DD80010E9CD = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1DEB928608733DD80010E9CD,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+		1DEB928908733DD80010E9CD = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1DEB928A08733DD80010E9CD,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+	};
+	rootObject = 08FB7793FE84155DC02AAC07;
+}
diff --git a/Modules/CompilerId/Xcode-3.pbxproj.in b/Modules/CompilerId/Xcode-3.pbxproj.in
new file mode 100644
index 0000000..41ca7db
--- /dev/null
+++ b/Modules/CompilerId/Xcode-3.pbxproj.in
@@ -0,0 +1,107 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 45;
+	objects = {
+
+		2C18F0B615DC1E0300593670 = {isa = PBXBuildFile; fileRef = 2C18F0B415DC1DC700593670; };
+		2C18F0B415DC1DC700593670 = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = @id_type@; path = @id_src@; sourceTree = "<group>"; };
+		08FB7794FE84155DC02AAC07 = {
+			isa = PBXGroup;
+			children = (
+				2C18F0B415DC1DC700593670,
+			);
+			name = CompilerId@id_lang@;
+			sourceTree = "<group>";
+		};
+		8DD76FA90486AB0100D96B5E = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 1DEB928508733DD80010E9CD;
+			buildPhases = (
+				2C18F0B515DC1DCE00593670,
+				2C8FEB8E15DC1A1A00E56A5D,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = CompilerId@id_lang@;
+			productName = CompilerId@id_lang@;
+			productType = "com.apple.product-type.tool";
+		};
+		08FB7793FE84155DC02AAC07 = {
+			isa = PBXProject;
+			buildConfigurationList = 1DEB928908733DD80010E9CD;
+			compatibilityVersion = "Xcode 3.1";
+			developmentRegion = English;
+			hasScannedForEncodings = 1;
+			knownRegions = (
+				en,
+			);
+			mainGroup = 08FB7794FE84155DC02AAC07;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				8DD76FA90486AB0100D96B5E,
+			);
+		};
+		2C8FEB8E15DC1A1A00E56A5D = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "echo \"GCC_VERSION=$GCC_VERSION\"";
+			showEnvVarsInLog = 0;
+		};
+		2C18F0B515DC1DCE00593670 = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				2C18F0B615DC1E0300593670,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		1DEB928608733DD80010E9CD = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				PRODUCT_NAME = CompilerId@id_lang@;
+			};
+			name = Debug;
+		};
+		1DEB928A08733DD80010E9CD = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_32_BIT)";
+				ONLY_ACTIVE_ARCH = YES;
+				CONFIGURATION_BUILD_DIR = "$(BUILD_DIR)";
+				SYMROOT = .;
+			};
+			name = Debug;
+		};
+		1DEB928508733DD80010E9CD = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1DEB928608733DD80010E9CD,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+		1DEB928908733DD80010E9CD = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1DEB928A08733DD80010E9CD,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+	};
+	rootObject = 08FB7793FE84155DC02AAC07;
+}