Fix Mac OS X build, debugserver version handling.

[brucem]

Summary

No longer rely on cmake to set DEBUGSERVER_VERSION_STR,
but now generate the _vers.c file like xcode does
and include the generated file into the build on Mac OS X.

This fixes the cmake Mac OS X build after an earlier change
by Jason Molenda.

[brucem]

Related to this are changes that were made by Todd Fiala last year to not use the version number as it might not be a valid float:

https://github.com/llvm-mirror/lldb/commit/b55b00cb5dac8db75d77868175e2868301ecfd7f

And some changes to support using a pre-processor define by Daniel Malea in 2013:

https://github.com/llvm-mirror/lldb/commit/49dd98a03a868087ce1a292a201618e04cad5e8d

It seems likely that something can be further simplified here.

[clayborg]

Looks good.

lldb/trunk/tools/debugserver/source/CMakeLists.txt

 endif ()
 
 check_cxx_compiler_flag("-Wno-extended-offsetof"
                         CXX_SUPPORTS_NO_EXTENDED_OFFSETOF)
 if (CXX_SUPPORTS_NO_EXTENDED_OFFSETOF)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-extended-offsetof")
 endif ()
 
+if (NOT CMAKE_SYSTEM_NAME MATCHES "Darwin")
   add_definitions(
     -DDEBUGSERVER_VERSION_STR="${LLDB_VERSION}"
     )
+endif ()
 
 add_library(lldbDebugserverCommon
   #${dnbconfig_header}
   debugserver.cpp
   DNBArch.cpp
   DNBBreakpoint.cpp
   DNB.cpp
   DNBDataRef.cpp

lldb/trunk/tools/debugserver/source/MacOSX/CMakeLists.txt

set(generated_mach_interfaces
   ${CMAKE_CURRENT_BINARY_DIR}/mach_excServer.c
   ${CMAKE_CURRENT_BINARY_DIR}/mach_excUser.c
   )
 add_custom_command(OUTPUT ${generated_mach_interfaces}
   COMMAND mig -I${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/dbgnub-mig.defs
   DEPENDS ${dnbconfig_header}
   )
 
+set(DEBUGSERVER_VERS_GENERATED_FILE ${CMAKE_CURRENT_BINARY_DIR}/debugserver_vers.c)
+set_source_files_properties(${DEBUGSERVER_VERS_GENERATED_FILE} PROPERTIES GENERATED 1)
+
+add_custom_command(OUTPUT ${DEBUGSERVER_VERS_GENERATED_FILE}
+  COMMAND ${LLDB_SOURCE_DIR}/scripts/generate-vers.pl
+          ${LLDB_SOURCE_DIR}/lldb.xcodeproj/project.pbxproj debugserver
+          > ${DEBUGSERVER_VERS_GENERATED_FILE})
+
 set(DEBUGSERVER_USED_LIBS
   lldbDebugserverCommon
   lldbUtility
   lldbDebugserverMacOSX_I386
   lldbDebugserverMacOSX_X86_64
   )
 
 add_lldb_executable(debugserver
   ${dnbconfig_header}
   HasAVX.s
   CFBundle.cpp
   CFData.cpp
   CFString.cpp
   Genealogy.cpp
   MachException.cpp
   MachProcess.mm
   MachTask.mm
   MachThread.cpp
   MachThreadList.cpp
   MachVMMemory.cpp
   MachVMRegion.cpp
   ${generated_mach_interfaces}
+  ${DEBUGSERVER_VERS_GENERATED_FILE}
   )
 
 set_source_files_properties(
   HasAVX.s
   # Necessary since compilation will fail with stand-alone assembler
   PROPERTIES LANGUAGE C COMPILE_FLAGS "-x assembler-with-cpp"
   )