test commit redux
[oota-llvm.git] / CMakeLists.txt
index 03ad6e23543d75fd299688b9d82b60ce5652f5ed..5d36f5fc1032aefdfe317adf65abb35c6da213f5 100644 (file)
@@ -10,7 +10,7 @@ set(CMAKE_MODULE_PATH
   "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
   )
 
-set(PACKAGE_VERSION "3.0")
+set(PACKAGE_VERSION "3.1svn")
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
@@ -27,6 +27,11 @@ set(PACKAGE_NAME llvm)
 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
 
+# Sanity check our source directory to make sure that we are not trying to
+# generate an in-tree build (unless on MSVC_IDE, where it is ok), and to make
+# sure that we don't have any stray generated files lying around in the tree
+# (which would end up getting picked up by header search, instead of the correct
+# versions).
 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
   message(FATAL_ERROR "In-source builds are not allowed.
 CMake would overwrite the makefiles distributed with LLVM.
@@ -35,27 +40,17 @@ to this source directory as the last argument.
 This process created the file `CMakeCache.txt' and the directory `CMakeFiles'.
 Please delete them.")
 endif()
-
-string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
-
-set(LLVM_MAIN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR})
-set(LLVM_MAIN_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/include)
-set(LLVM_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
-set(LLVM_TOOLS_BINARY_DIR ${LLVM_BINARY_DIR}/bin)
-set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
-set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )
-
 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
   file(GLOB_RECURSE
     tablegenned_files_on_include_dir
-    "${LLVM_MAIN_SRC_DIR}/include/llvm/*.gen")
+    "${CMAKE_CURRENT_SOURCE_DIR}/include/llvm/*.gen")
   file(GLOB_RECURSE
     tablegenned_files_on_lib_dir
-    "${LLVM_MAIN_SRC_DIR}/lib/Target/*.inc")
+    "${CMAKE_CURRENT_SOURCE_DIR}/lib/Target/*.inc")
   if( tablegenned_files_on_include_dir OR tablegenned_files_on_lib_dir)
     message(FATAL_ERROR "Apparently there is a previous in-source build,
 probably as the result of running `configure' and `make' on
-${LLVM_MAIN_SRC_DIR}.
+${CMAKE_CURRENT_SOURCE_DIR}.
 This may cause problems. The suspicious files are:
 ${tablegenned_files_on_lib_dir}
 ${tablegenned_files_on_include_dir}
@@ -63,6 +58,15 @@ Please clean the source directory.")
   endif()
 endif()
 
+string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
+
+set(LLVM_MAIN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+set(LLVM_MAIN_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/include)
+set(LLVM_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
+set(LLVM_TOOLS_BINARY_DIR ${LLVM_BINARY_DIR}/bin)
+set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
+set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )
+
 set(LLVM_ALL_TARGETS
   ARM
   CBackend
@@ -123,12 +127,6 @@ foreach(c ${LLVM_TARGETS_TO_BUILD})
   endif()
 endforeach(c)
 
-# Produce llvm/Config/Targets.def
-configure_file(
-  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
-  ${LLVM_BINARY_DIR}/include/llvm/Config/Targets.def
-  )
-
 set(llvm_builded_incs_dir ${LLVM_BINARY_DIR}/include/llvm)
 
 include(AddLLVMDefinitions)
@@ -207,14 +205,113 @@ option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)
 include(config-ix)
 include(HandleLLVMOptions)
 
+# Verify that we can find a Python interpreter,
+include(FindPythonInterp)
+if( NOT PYTHONINTERP_FOUND )
+  message(FATAL_ERROR
+"Unable to find Python interpreter, required for builds and testing.
+
+Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
+endif()
+
+######
+# LLVMBuild Integration
+#
+# We use llvm-build to generate all the data required by the CMake based
+# build system in one swoop:
+#
+#  - We generate a file (a CMake fragment) in the object root which contains
+#    all the definitions that are required by CMake.
+#
+#  - We generate the library table used by llvm-config.
+#
+#  - We generate the dependencies for the CMake fragment, so that we will
+#    automatically reconfigure outselves.
+
+set(LLVMBUILDTOOL "${LLVM_MAIN_SRC_DIR}/utils/llvm-build/llvm-build")
+set(LLVMCONFIGLIBRARYDEPENDENCIESINC
+  "${LLVM_BINARY_DIR}/tools/llvm-config-2/LibraryDependencies.inc")
+set(LLVMBUILDCMAKEFRAG
+  "${LLVM_BINARY_DIR}/LLVMBuild.cmake")
+message(STATUS "Constructing LLVMBuild project information")
+execute_process(
+  COMMAND ${PYTHON_EXECUTABLE} ${LLVMBUILDTOOL}
+            --native-target "${LLVM_NATIVE_ARCH}"
+            --enable-targets "${LLVM_TARGETS_TO_BUILD}"
+            --write-library-table ${LLVMCONFIGLIBRARYDEPENDENCIESINC}
+            --write-cmake-fragment ${LLVMBUILDCMAKEFRAG}
+            ERROR_VARIABLE LLVMBUILDOUTPUT
+            ERROR_VARIABLE LLVMBUILDERRORS
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+            ERROR_STRIP_TRAILING_WHITESPACE
+  RESULT_VARIABLE LLVMBUILDRESULT)
+
+# On Win32, CMake doesn't properly handle piping the default output/error
+# streams into the GUI console. So, we explicitly catch and report them.
+if( NOT "${LLVMBUILDOUTPUT}" STREQUAL "")
+  message(STATUS "llvm-build output: ${LLVMBUILDOUTPUT}")
+endif()
+if( NOT "${LLVMBUILDRESULT}" STREQUAL "0" )
+  message(FATAL_ERROR
+    "Unexpected failure executing llvm-build: ${LLVMBUILDERRORS}")
+endif()
+
+# Include the generated CMake fragment. This will define properties from the
+# LLVMBuild files in a format which is easy to consume from CMake, and will add
+# the dependencies so that CMake will reconfigure properly when the LLVMBuild
+# files change.
+include(${LLVMBUILDCMAKEFRAG})
+
+######
+
+# Configure all of the various header file fragments LLVM uses which depend on
+# configuration variables.
+set(LLVM_ENUM_ASM_PRINTERS "")
+set(LLVM_ENUM_ASM_PARSERS "")
+set(LLVM_ENUM_DISASSEMBLERS "")
+foreach(t ${LLVM_TARGETS_TO_BUILD})
+  set( td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t} )
+  file(GLOB asmp_file "${td}/*AsmPrinter.cpp")
+  if( asmp_file )
+    set(LLVM_ENUM_ASM_PRINTERS
+      "${LLVM_ENUM_ASM_PRINTERS}LLVM_ASM_PRINTER(${t})\n")
+  endif()
+  if( EXISTS ${td}/AsmParser/CMakeLists.txt )
+    set(LLVM_ENUM_ASM_PARSERS
+      "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
+  endif()
+  if( EXISTS ${td}/Disassembler/CMakeLists.txt )
+    set(LLVM_ENUM_DISASSEMBLERS
+      "${LLVM_ENUM_DISASSEMBLERS}LLVM_DISASSEMBLER(${t})\n")
+  endif()
+endforeach(t)
+
+# Produce the target definition files, which provide a way for clients to easily
+# include various classes of targets.
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmPrinters.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmPrinters.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmParsers.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/AsmParsers.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Disassemblers.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/Disassemblers.def
+  )
+configure_file(
+  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
+  ${LLVM_BINARY_DIR}/include/llvm/Config/Targets.def
+  )
+
+# Configure the three LLVM configuration header files.
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/config.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Config/config.h)
-
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/llvm-config.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Config/llvm-config.h)
-
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Support/DataTypes.h.cmake
   ${LLVM_BINARY_DIR}/include/llvm/Support/DataTypes.h)