[PATCH] Adding install targets for individual LLVM tools and libraries.

[Chris Bieneman]

* add_llvm_tool and add_llvm_library now add install-${name} targets to install specific components
* added installhdrs target to install just the LLVM headers
* The above changes only apply for single-configuration generators (Ninja, Makefiles...), not for multi-configuration generators (Visual Studio, Xcode...)

http://reviews.llvm.org/D7619

Files:
  CMakeLists.txt
  cmake/modules/AddLLVM.cmake

Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -630,6 +630,7 @@
 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
   install(DIRECTORY include/llvm include/llvm-c
     DESTINATION include
+    COMPONENT llvm-headers
     FILES_MATCHING
     PATTERN "*.def"
     PATTERN "*.h"
@@ -641,6 +642,7 @@
 
   install(DIRECTORY ${LLVM_INCLUDE_DIR}/llvm
     DESTINATION include
+    COMPONENT llvm-headers
     FILES_MATCHING
     PATTERN "*.def"
     PATTERN "*.h"
@@ -651,4 +653,12 @@
     PATTERN "config.h" EXCLUDE
     PATTERN ".svn" EXCLUDE
     )
+
+  if (NOT CMAKE_CONFIGURATION_TYPES)
+    add_custom_target(installhdrs
+                      DEPENDS ${name}
+                      COMMAND "${CMAKE_COMMAND}"
+                              -DCMAKE_INSTALL_COMPONENT=llvm-headers
+                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+  endif()
 endif()
Index: cmake/modules/AddLLVM.cmake
===================================================================
--- cmake/modules/AddLLVM.cmake
+++ cmake/modules/AddLLVM.cmake
@@ -408,7 +408,16 @@
         EXPORT LLVMExports
         RUNTIME DESTINATION bin
         LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+        COMPONENT ${name})
+
+      if (NOT CMAKE_CONFIGURATION_TYPES)
+        add_custom_target(install-${name}
+                          DEPENDS ${name}
+                          COMMAND "${CMAKE_COMMAND}"
+                                  -DCMAKE_INSTALL_COMPONENT=${name}
+                                  -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+      endif()
     endif()
     set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
   endif()
@@ -489,7 +498,16 @@
     if( LLVM_BUILD_TOOLS )
       install(TARGETS ${name}
               EXPORT LLVMExports
-              RUNTIME DESTINATION bin)
+              RUNTIME DESTINATION bin
+              COMPONENT ${name})
+
+      if (NOT CMAKE_CONFIGURATION_TYPES)
+        add_custom_target(install-${name}
+                          DEPENDS ${name}
+                          COMMAND "${CMAKE_COMMAND}"
+                                  -DCMAKE_INSTALL_COMPONENT=${name}
+                                  -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+      endif()
     endif()
   endif()
   if( LLVM_BUILD_TOOLS )

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