sync with upstream

1 files changed, 159 insertions, 0 deletions

diff --git a/cmake/scripts/common/ArchSetup.cmake b/cmake/scripts/common/ArchSetup.cmake
new file mode 100644
index 0000000..8d5dba8
--- /dev/null
+++ b/cmake/scripts/common/ArchSetup.cmake
@@ -0,0 +1,159 @@
+# This script configures the build for a given architecture.
+# Flags and stringified arch is set up.
+# General compiler tests belongs here.
+#
+# On return, the following variables are set:
+# CMAKE_SYSTEM_NAME - a lowercased system name
+# CPU - the CPU on the target
+# ARCH - the system architecture
+# ARCH_DEFINES - list of compiler definitions for this architecture
+# SYSTEM_DEFINES - list of compiler definitions for this system
+# DEP_DEFINES - compiler definitions for system dependencies (e.g. LIRC)
+# + the results of compiler tests etc.
+
+include(CheckCXXSourceCompiles)
+include(CheckSymbolExists)
+include(CheckFunctionExists)
+include(CheckIncludeFile)
+
+# Macro to check if a given type exists in a given header
+# Arguments:
+#   header the header to check
+#   type   the type to check for existence
+#   var    the compiler definition to set if type exists
+# On return:
+#   If type was found, the definition is added to SYSTEM_DEFINES
+macro(check_type header type var)
+  check_cxx_source_compiles("#include <${header}>
+                             int main()
+                             {
+                               ${type} s;
+                             }" ${var})
+  if(${var})
+    list(APPEND SYSTEM_DEFINES -D${var}=1)
+  endif()
+endmacro()
+
+# Macro to check if a given builtin function exists
+# Arguments:
+#   func   the function to check
+#   var    the compiler definition to set if type exists
+# On return:
+#   If type was found, the definition is added to SYSTEM_DEFINES
+macro(check_builtin func var)
+  check_cxx_source_compiles("
+                             int main()
+                             {
+                               ${func};
+                             }" ${var})
+  if(${var})
+    list(APPEND SYSTEM_DEFINES -D${var}=1)
+  endif()
+endmacro()
+
+
+# -------- Main script --------- 
+message(STATUS "System type: ${CMAKE_SYSTEM_NAME}")
+if(NOT CORE_SYSTEM_NAME)
+  string(TOLOWER ${CMAKE_SYSTEM_NAME} CORE_SYSTEM_NAME)
+endif()
+
+if(WITH_CPU)
+  set(CPU ${WITH_CPU})
+elseif(NOT KODI_DEPENDSBUILD)
+  set(CPU ${CMAKE_SYSTEM_PROCESSOR})
+endif()
+
+if(CMAKE_TOOLCHAIN_FILE)
+  if(NOT EXISTS "${CMAKE_TOOLCHAIN_FILE}")
+    message(FATAL_ERROR "Toolchain file ${CMAKE_TOOLCHAIN_FILE} does not exist.")
+  elseif(KODI_DEPENDSBUILD AND (NOT DEPENDS_PATH OR NOT NATIVEPREFIX))
+    message(FATAL_ERROR "Toolchain did not define DEPENDS_PATH or NATIVEPREFIX. Possibly outdated depends.")
+  endif()
+endif()
+
+# While CMAKE_CROSSCOMPILING is set unconditionally if there's a toolchain file,
+# this variable is set if we can execute build artefacts on the host system (for example unit tests).
+if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL CMAKE_SYSTEM_PROCESSOR AND
+   CMAKE_HOST_SYSTEM_NAME STREQUAL CMAKE_SYSTEM_NAME)
+  set(CORE_HOST_IS_TARGET TRUE)
+else()
+  set(CORE_HOST_IS_TARGET FALSE)
+endif()
+
+# Main cpp
+set(CORE_MAIN_SOURCE ${CMAKE_SOURCE_DIR}/xbmc/platform/posix/main.cpp)
+
+# system specific arch setup
+if(NOT EXISTS ${CMAKE_SOURCE_DIR}/cmake/scripts/${CORE_SYSTEM_NAME}/ArchSetup.cmake)
+  message(FATAL_ERROR "Couldn't find configuration for '${CORE_SYSTEM_NAME}' "
+                      "Either the platform is not (yet) supported "
+                      "or a toolchain file has to be specified. "
+                      "Consult ${CMAKE_SOURCE_DIR}/cmake/README.md for instructions. "
+                      "Note: Specifying a toolchain requires a clean build directory!")
+endif()
+include(${CMAKE_SOURCE_DIR}/cmake/scripts/${CORE_SYSTEM_NAME}/ArchSetup.cmake)
+
+message(STATUS "Core system type: ${CORE_SYSTEM_NAME}")
+message(STATUS "Platform: ${PLATFORM}")
+message(STATUS "CPU: ${CPU}, ARCH: ${ARCH}")
+message(STATUS "Cross-Compiling: ${CMAKE_CROSSCOMPILING}")
+message(STATUS "Execute build artefacts on host: ${CORE_HOST_IS_TARGET}")
+message(STATUS "Depends based build: ${KODI_DEPENDSBUILD}")
+
+check_type(string std::u16string HAVE_STD__U16_STRING)
+check_type(string std::u32string HAVE_STD__U32_STRING)
+check_type(string char16_t HAVE_CHAR16_T)
+check_type(string char32_t HAVE_CHAR32_T)
+check_type(stdint.h uint_least16_t HAVE_STDINT_H)
+check_symbol_exists(posix_fadvise fcntl.h HAVE_POSIX_FADVISE)
+check_symbol_exists(PRIdMAX inttypes.h HAVE_INTTYPES_H)
+check_builtin("long* temp=0; long ret=__sync_add_and_fetch(temp, 1)" HAS_BUILTIN_SYNC_ADD_AND_FETCH)
+check_builtin("long* temp=0; long ret=__sync_sub_and_fetch(temp, 1)" HAS_BUILTIN_SYNC_SUB_AND_FETCH)
+check_builtin("long* temp=0; long ret=__sync_val_compare_and_swap(temp, 1, 1)" HAS_BUILTIN_SYNC_VAL_COMPARE_AND_SWAP)
+check_include_file(sys/inotify.h HAVE_INOTIFY)
+if(HAVE_INOTIFY)
+  list(APPEND SYSTEM_DEFINES -DHAVE_INOTIFY=1)
+endif()
+if(HAVE_POSIX_FADVISE)
+  list(APPEND SYSTEM_DEFINES -DHAVE_POSIX_FADVISE=1)
+endif()
+check_function_exists(localtime_r HAVE_LOCALTIME_R)
+if(HAVE_LOCALTIME_R)
+  list(APPEND SYSTEM_DEFINES -DHAVE_LOCALTIME_R=1)
+endif()
+if(HAVE_INTTYPES_H)
+  list(APPEND SYSTEM_DEFINES -DHAVE_INTTYPES_H=1)
+endif()
+
+find_package(SSE)
+foreach(_sse SSE SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 AVX AVX2)
+  if(${${_sse}_FOUND})
+    # enable SSE versions up to 4.1 by default, if available
+    if(NOT ${_sse} MATCHES "AVX" AND NOT ${_sse} STREQUAL "SSE4_2")
+      option(ENABLE_${_sse} "Enable ${_sse}" ON)
+    else()
+      option(ENABLE_${_sse} "Enable ${_sse}" OFF)
+    endif()
+  endif()
+  if(ENABLE_${_sse})
+    set(HAVE_${_sse} TRUE CACHE STRING "${_sse} enabled")
+    list(APPEND ARCH_DEFINES -DHAVE_${_sse}=1)
+  endif()
+endforeach()
+
+if(NOT DEFINED NEON OR NEON)
+  option(ENABLE_NEON "Enable NEON optimization" ${NEON})
+  if(ENABLE_NEON)
+    message(STATUS "NEON optimization enabled")
+    add_definitions(-DHAS_NEON)
+    if(NEON_FLAGS)
+      add_options(ALL_LANGUAGES ALL_BUILDS ${NEON_FLAGS})
+    endif()
+  endif()
+endif()
+
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+  add_options (ALL_LANGUAGES DEBUG "-g" "-D_DEBUG" "-Wall")
+endif()
+