CMake build system: support for parallel builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56453 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 34 insertions, 4 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f6803d989b..31f754a953 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -97,6 +97,10 @@ include(AddPartiallyLinkedObject)
 
 add_subdirectory(lib/Support)
 add_subdirectory(lib/System)
+
+# Everything else depends on Support and System:
+set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${LLVM_LIBS} )
+
 add_subdirectory(utils/TableGen)
 
 add_custom_command(OUTPUT ${llvm_builded_incs_dir}/Intrinsics.gen
@@ -107,6 +111,8 @@ add_custom_command(OUTPUT ${llvm_builded_incs_dir}/Intrinsics.gen
 add_custom_target(intrinsics_gen ALL
   DEPENDS ${llvm_builded_incs_dir}/Intrinsics.gen)
 
+set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} intrinsics_gen )
+
 add_subdirectory(lib/VMCore)
 add_subdirectory(lib/CodeGen)
 add_subdirectory(lib/CodeGen/SelectionDAG)
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index c3641eacd2..fc917d324a 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -3,6 +3,10 @@ include(LLVMConfig)
 macro(add_llvm_library name)
   add_library( ${name} ${ARGN} )
   set( llvm_libs ${llvm_libs} ${name} PARENT_SCOPE)
+  set( llvm_lib_targets ${llvm_lib_targets} ${name} PARENT_SCOPE )
+  if( LLVM_COMMON_DEPENDS )
+    add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
+  endif( LLVM_COMMON_DEPENDS )
 endmacro(add_llvm_library name)
 
 
diff --git a/cmake/modules/AddPartiallyLinkedObject.cmake b/cmake/modules/AddPartiallyLinkedObject.cmake
index a8a3d999e4..6968857db8 100755
--- a/cmake/modules/AddPartiallyLinkedObject.cmake
+++ b/cmake/modules/AddPartiallyLinkedObject.cmake
@@ -1,4 +1,13 @@
 
+macro(target_name_of_partially_linked_object lib var)
+  if( MSVC )
+    set(${var} ${lib})
+  else( MSVC )
+    set(${var} ${lib}_pll)
+  endif( MSVC )
+endmacro(target_name_of_partially_linked_object lib var)
+
+
 macro(add_partially_linked_object lib)
   if( MSVC )
     add_llvm_library( ${lib} ${ARGN})
@@ -7,6 +16,9 @@ macro(add_partially_linked_object lib)
     set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/temp_lib)
     set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/temp_lib)
     add_library( ${lib} STATIC ${ARGN})
+    if( LLVM_COMMON_DEPENDS )
+      add_dependencies( ${lib} ${LLVM_COMMON_DEPENDS} )
+    endif( LLVM_COMMON_DEPENDS )
     add_custom_command(OUTPUT ${pll}
       COMMENT "Building ${lib}.o..."
       DEPENDS ${lib}
@@ -15,7 +27,9 @@ macro(add_partially_linked_object lib)
       COMMAND ld -r *${CMAKE_CXX_OUTPUT_EXTENSION} -o ${pll}
       COMMAND rm -f *${CMAKE_CXX_OUTPUT_EXTENSION}
       )
-    add_custom_target(${lib}_pll ALL DEPENDS ${pll})
+    target_name_of_partially_linked_object(${lib} tnplo)
+    add_custom_target(${tnplo} ALL DEPENDS ${pll})
     set( llvm_libs ${llvm_libs} ${pll} PARENT_SCOPE)
+    set( llvm_lib_targets ${llvm_lib_targets} ${tnplo} PARENT_SCOPE )
   endif( MSVC )
 endmacro(add_partially_linked_object lib)
diff --git a/lib/Target/X86/AsmPrinter/CMakeLists.txt b/lib/Target/X86/AsmPrinter/CMakeLists.txt
index ca4acb23c6..19d9edfac7 100644
--- a/lib/Target/X86/AsmPrinter/CMakeLists.txt
+++ b/lib/Target/X86/AsmPrinter/CMakeLists.txt
@@ -5,3 +5,7 @@ add_llvm_library(LLVMX86AsmPrinter
   X86AsmPrinter.cpp
   X86IntelAsmPrinter.cpp
   )
+
+target_name_of_partially_linked_object(LLVMX86CodeGen n)
+
+add_dependencies(LLVMX86AsmPrinter ${n})
diff --git a/lib/Target/X86/CMakeLists.txt b/lib/Target/X86/CMakeLists.txt
index de8ff2cd5d..5b7900334d 100644
--- a/lib/Target/X86/CMakeLists.txt
+++ b/lib/Target/X86/CMakeLists.txt
@@ -20,7 +20,6 @@ x86tgen(X86GenSubtarget.inc -gen-subtarget)
 
 add_custom_target(X86Table_gen echo Tablegenning
   DEPENDS
-  ${llvm_builded_incs_dir}/Intrinsics.gen
   ${CMAKE_CURRENT_BINARY_DIR}/X86GenRegisterInfo.h.inc
   ${CMAKE_CURRENT_BINARY_DIR}/X86GenRegisterNames.inc
   ${CMAKE_CURRENT_BINARY_DIR}/X86GenRegisterInfo.inc
@@ -34,6 +33,8 @@ add_custom_target(X86Table_gen echo Tablegenning
   ${CMAKE_CURRENT_BINARY_DIR}/X86GenSubtarget.inc
   )
 
+add_dependencies(X86Table_gen ${LLVM_COMMON_DEPENDS})
+
 include_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
 
 add_partially_linked_object(LLVMX86CodeGen
diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index 2d6898c2db..bf8debb47a 100644
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -69,7 +69,6 @@ set(LLVM_CONFIG_IN ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in)
 
 add_custom_command(OUTPUT ${LIBDEPS_TMP}
   COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY} > ${LIBDEPS_TMP}
-  DEPENDS ${llvm_libs}
   COMMENT "Regenerating ${LIBDEPS_TMP}")
 
 add_custom_command(OUTPUT ${LIBDEPS}
@@ -99,4 +98,6 @@ add_custom_command(OUTPUT ${LLVM_CONFIG}
   )
 
 add_custom_target(llvm-config.target ALL
-  DEPENDS ${LLVM_CONFIG})
\ No newline at end of file
+  DEPENDS ${LLVM_CONFIG})
+
+add_dependencies(llvm-config.target ${llvm_lib_targets})