Fix configure to find arc4random via header files.

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

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 3f57e23a6f35420a3d9e109790f16c5d42a8959e..93aeae1003206ef99635e92b4d6bf6ed71272f97 100755 (executable)
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -11,6 +11,8 @@ include(CheckFunctionExists)
 include(CheckCXXSourceCompiles)
 include(TestBigEndian)
 
+include(HandleLLVMStdlib)
+
 if( UNIX AND NOT BEOS )
   # Used by check_symbol_exists:
   set(CMAKE_REQUIRED_LIBRARIES m)
@@ -97,6 +99,7 @@ if( NOT PURE_WINDOWS )
   else()
     set(HAVE_LIBZ 0)
   endif()
+  check_library_exists(edit el_init "" HAVE_LIBEDIT)
   if(LLVM_ENABLE_TERMINFO)
     set(HAVE_TERMINFO 0)
     foreach(library tinfo terminfo curses ncurses ncursesw)
@@ -114,7 +117,7 @@ if( NOT PURE_WINDOWS )
 endif()
 
 # function checks
-check_symbol_exists(arc4random "stdlib.h" HAVE_ARC4RANDOM)
+check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
 check_symbol_exists(backtrace "execinfo.h" HAVE_BACKTRACE)
 check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
@@ -300,10 +303,22 @@ 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 ()
 
-include(CheckCXXCompilerFlag)
-
 check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
 
 set(USE_NO_MAYBE_UNINITIALIZED 0)
@@ -401,6 +416,7 @@ endif ()
 if( MINGW )
   set(HAVE_LIBIMAGEHLP 1)
   set(HAVE_LIBPSAPI 1)
+  set(HAVE_LIBSHELL32 1)
   # TODO: Check existence of libraries.
   #   include(CheckLibraryExists)
   #   CHECK_LIBRARY_EXISTS(imagehlp ??? . HAVE_LIBIMAGEHLP)
@@ -473,6 +489,12 @@ if (LLVM_ENABLE_DOXYGEN)
     if (LLVM_BUILD_DOCS)
       add_custom_target(doxygen ALL)
     endif()
+
+    option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
+    if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
+      set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external searhc.")
+      set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
+    endif()
   endif()
 else()
   message(STATUS "Doxygen disabled.")