Add CMake build

.clang-format

@@ -0,0 +1,21 @@
+BasedOnStyle: GNU
+
+ColumnLimit: 80
+SortIncludes: false
+
+TabWidth: 4
+UseTab: Always
+IndentWidth: 4
+ContinuationIndentWidth: 4
+
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+SpaceBeforeParens: ControlStatements
+BreakBeforeBraces: Custom
+BraceWrapping: { AfterFunction: true }
+AlignAfterOpenBracket: DontAlign
+SpaceAfterCStyleCast: true
+AllowShortFunctionsOnASingleLine: false
+
+BinPackParameters: true
+AllowAllParametersOfDeclarationOnNextLine: false

.gitignore

@@ -58,3 +58,32 @@ test-driver
 isl_srcdir.c
 bound_test.sh
 pip_test.sh
+
+# CMake generated files
+/CMakeCache.txt
+/CMakeFiles/
+/CTestTestfile.cmake
+/cmake_install.cmake
+/build.ninja
+/rules.ninja
+/.ninja_deps
+/.ninja_log
+
+# Configure-written files
+*.tmp
+/codegen_test.sh
+/interface/cmake_install.cmake
+/interface/include/isl-interface/config.h
+/islConfig.cmake
+/islConfigVersion.cmake
+
+# Build artifacts
+/isl_test_imath
+/isl_test_int
+/isl_codegen
+/isl_test2
+/interface/extract_interface
+
+# Generated bindings
+# This is the only one not checked into the repository -- forgotten?
+/include/isl/python.h