Merge pull request #5903 from alblue/SR-1676

Enable SourceKit building by default on Linux

Author: akyrtzi

CMakeLists.txt

@@ -302,8 +302,14 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "")
 endif()
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
   set(SWIFT_BUILD_SOURCEKIT_default TRUE)
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+  if(EXISTS ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE})
+    set(SWIFT_BUILD_SOURCEKIT_default TRUE)
+  else()
+    set(SWIFT_BUILD_SOURCEKIT_default FALSE)
+  endif()
 else()
-  set(SWIFT_BUILD_SOURCEKIT_default FALSE)
+    set(SWIFT_BUILD_SOURCEKIT_default FALSE)
 endif()
 option(SWIFT_BUILD_SOURCEKIT
     "Build SourceKit"

tools/SourceKit/CMakeLists.txt

@@ -200,6 +200,10 @@ macro(add_sourcekit_library name)
     endif()
   endif()
 
+  if(SWIFT_BUILD_SOURCEKIT AND "${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+    add_dependencies(${name} needs-libdispatch)
+  endif()
+
   if("${SOURCEKITLIB_INSTALL_IN_COMPONENT}" STREQUAL "")
     if(SOURCEKITLIB_SHARED)
       set(SOURCEKITLIB_INSTALL_IN_COMPONENT tools)
@@ -508,6 +512,24 @@ include_directories(BEFORE
 )
 
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+  if(SWIFT_BUILD_SOURCEKIT)
+    add_custom_command(
+      OUTPUT "${SWIFT_PATH_TO_LIBDISPATCH_BUILD}/src/.libs/libdispatch.so"
+      COMMAND /bin/sh ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE}/autogen.sh
+      COMMAND /bin/sh ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE}/configure
+      COMMAND /usr/bin/make
+      COMMAND /bin/mkdir -p ${SWIFT_PATH_TO_LIBDISPATCH_BUILD}/src/.libs/
+      COMMAND /bin/cp ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE}/src/.libs/libdispatch.so ${SWIFT_PATH_TO_LIBDISPATCH_BUILD}/src/.libs/libdispatch.so
+      COMMAND /usr/bin/make distclean
+      WORKING_DIRECTORY ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE}
+      COMMENT "Generating libdispatch.so"
+      USES_TERMINAL
+    )
+    add_custom_target(needs-libdispatch
+      DEPENDS "${SWIFT_PATH_TO_LIBDISPATCH_BUILD}/src/.libs/libdispatch.so"
+    )
+  endif()
+
   include_directories(AFTER ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE})
 
   add_library(dispatch SHARED IMPORTED)