Remove unused variable.

[oota-llvm.git] / cmake / config-ix.cmake

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 2af3fe3c5e0a3319251334ca1aae53c205c6e7cb..8139d57ff83fb40b7cc6b8ed45f42c8869d1135e 100755 (executable)
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -50,6 +50,7 @@ check_include_file(execinfo.h HAVE_EXECINFO_H)
 check_include_file(fcntl.h HAVE_FCNTL_H)
 check_include_file(inttypes.h HAVE_INTTYPES_H)
 check_include_file(limits.h HAVE_LIMITS_H)
+check_include_file(link.h HAVE_LINK_H)
 check_include_file(malloc.h HAVE_MALLOC_H)
 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
 check_include_file(ndir.h HAVE_NDIR_H)
@@ -258,12 +259,12 @@ endif ()
 
 if( LLVM_ENABLE_FFI )
   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
-  if( FFI_INCLUDE_PATH )
+  if( EXISTS "${FFI_INCLUDE_PATH}/ffi.h" )
     set(FFI_HEADER ffi.h CACHE INTERNAL "")
     set(HAVE_FFI_H 1 CACHE INTERNAL "")
   else()
     find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
-    if( FFI_INCLUDE_PATH )
+    if( EXISTS "${FFI_INCLUDE_PATH}/ffi/ffi.h" )
       set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
       set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
     endif()
@@ -298,25 +299,6 @@ else()
   set(ENABLE_PIC 0)
 endif()
 
-find_package(LibXml2)
-if (LIBXML2_FOUND)
-  set(CLANG_HAVE_LIBXML 1)
-  # When cross-compiling, liblzma is not detected as a dependency for libxml2,
-  # which makes linking c-index-test fail. But for native builds, all libraries
-  # are installed and checked by CMake before Makefiles are generated and everything
-  # works according to the plan. However, if a -llzma is added to native builds,
-  # an additional requirement on the static liblzma.a is required, but will not
-  # be checked by CMake, breaking native compilation.
-  # Since this is only pertinent to cross-compilations, and there's no way CMake
-  # can check for every foreign library on every OS, we add the dep and warn the dev.
-  if ( CMAKE_CROSSCOMPILING )
-    if (NOT PC_LIBXML_VERSION VERSION_LESS "2.8.0")
-      message(STATUS "Adding LZMA as a dep to XML2 for cross-compilation, make sure liblzma.a is available.")
-      set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARIES} "-llzma")
-    endif ()
-  endif ()
-endif ()
-
 check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
 
 set(USE_NO_MAYBE_UNINITIALIZED 0)
@@ -509,3 +491,22 @@ if (LLVM_ENABLE_SPHINX)
 else()
   message(STATUS "Sphinx disabled.")
 endif()
+
+set(LLVM_BINDINGS "")
+if(WIN32)
+  message(STATUS "Go bindings disabled.")
+else()
+  find_program(GO_EXECUTABLE NAMES go DOC "go executable")
+  if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
+    message(STATUS "Go bindings disabled.")
+  else()
+    execute_process(COMMAND ${GO_EXECUTABLE} run ${CMAKE_SOURCE_DIR}/bindings/go/conftest.go
+                    RESULT_VARIABLE GO_CONFTEST)
+    if(GO_CONFTEST STREQUAL "0")
+      set(LLVM_BINDINGS "${LLVM_BINDINGS} go")
+      message(STATUS "Go bindings enabled.")
+    else()
+      message(STATUS "Go bindings disabled, need at least Go 1.2.")
+    endif()
+  endif()
+endif()