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Use libcxx from LLVM Project submodule

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The version of libcxx shipped with Android NDK is fairly outdated and doesn't contain several features we desire such as C++ 20 ranges. This has been fixed by using libcxx directly from the LLVM Project which has been added as a submodule and can be updated independently of NDK.
This commit is contained in:
PixelyIon 2021-10-31 03:13:41 +05:30
parent 82154f3ef6
commit 4b80e1f91c
6 changed files with 36 additions and 6 deletions
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4
.gitmodules vendored
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@ -38,3 +38,7 @@
path = app/libraries/boost
url = https://github.com/boostorg/boost.git
ignore = all
[submodule "app/libraries/llvm-project"]
path = app/libraries/llvm
url = https://github.com/llvm/llvm-project.git
shallow = true

31
app/CMakeLists.txt
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@ -1,5 +1,5 @@
cmake_minimum_required(VERSION 3.16)
project(Skyline LANGUAGES CXX ASM VERSION 0.3)
project(Skyline LANGUAGES C CXX ASM VERSION 0.3)
set(BUILD_TESTS OFF CACHE BOOL "Build Tests" FORCE)
set(BUILD_TESTING OFF CACHE BOOL "Build Testing" FORCE)
@ -9,8 +9,31 @@ set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(source_DIR ${CMAKE_SOURCE_DIR}/src/main/cpp)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
set(CMAKE_CXX_FLAGS_RELEASE "-Ofast -flto=full -fno-stack-protector -Wno-unused-command-line-argument -DNDEBUG")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing -Wno-unused-command-line-argument")
set(CMAKE_CXX_FLAGS_RELEASE "-Ofast -flto=full -fno-stack-protector -DNDEBUG")
# libcxx
set(ANDROID_STL "none")
set(LIBCXX_INCLUDE_TESTS OFF)
set(LIBCXX_INCLUDE_BENCHMARKS OFF)
set(LIBCXX_INCLUDE_DOCS OFF)
set(LIBCXX_ENABLE_SHARED FALSE)
set(LIBCXX_ENABLE_ASSERTIONS FALSE)
set(LIBCXX_STANDALONE_BUILD FALSE)
add_subdirectory("libraries/llvm/libcxx")
link_libraries(cxx_static)
get_target_property(LIBCXX_INCLUDE_COMPILE_OPTION cxx-headers INTERFACE_COMPILE_OPTIONS)
string(REGEX REPLACE "-I" "" LIBCXX_INCLUDE_DIRECTORY_LIST "${LIBCXX_INCLUDE_COMPILE_OPTION}")
list(GET LIBCXX_INCLUDE_DIRECTORY_LIST 1 LIBCXX_TARGET_INCLUDE_DIRECTORY) # We just want the target include directory
set_target_properties(cxx-headers PROPERTIES INTERFACE_COMPILE_OPTIONS -isystem${LIBCXX_TARGET_INCLUDE_DIRECTORY})
# libcxxabi
set(LIBCXXABI_INCLUDE_TESTS OFF)
set(LIBCXXABI_ENABLE_SHARED FALSE)
set(LIBCXXABI_STANDALONE_BUILD FALSE)
set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXX_TARGET_INCLUDE_DIRECTORY}" CACHE STRING "" FORCE)
add_subdirectory("libraries/llvm/libcxxabi")
link_libraries(cxxabi_static)
# {fmt}
add_subdirectory("libraries/fmt")
@ -57,8 +80,10 @@ include_directories(SYSTEM "libraries/mbedtls/include")
target_compile_options(mbedcrypto PRIVATE -Wno-everything)
# Opus
set(OPUS_INSTALL_CMAKE_CONFIG_MODULE OFF CACHE BOOL "Install Opus CMake package config module" FORCE)
include_directories(SYSTEM "libraries/opus/include")
add_subdirectory("libraries/opus")
target_compile_definitions(opus PRIVATE OPUS_WILL_BE_SLOW=1) # libopus will warn when built without optimizations
# Perfetto SDK
include_directories(SYSTEM "libraries/perfetto/sdk")

1
app/libraries/llvm Submodule

@ -0,0 +1 @@
Subproject commit 08e3a5ccd952edee36b3c002e3a29c6b1b5153de

2
app/src/main/cpp/skyline/common/span.h
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@ -98,7 +98,7 @@ namespace skyline {
return this->data() < pointer;
}
constexpr bool operator<(typename std::span<T, Extent>::const_iterator it) const {
constexpr bool operator<(typename std::span<T, Extent>::iterator it) const {
return this->begin() < it;
}

2
app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
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@ -286,7 +286,7 @@ namespace skyline::service::nvdrv::device::nvhost {
bigPageSize, asFd, flags, vaRangeStart, vaRangeEnd, vaRangeSplit);
if (bigPageSize) {
if (!std::ispow2(bigPageSize)) {
if (!std::has_single_bit(bigPageSize)) {
state.logger->Error("Non power-of-2 big page size: 0x{:X}!", bigPageSize);
return PosixResult::InvalidArgument;
}

2
app/src/main/cpp/skyline/services/nvdrv/devices/nvmap.cpp
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@ -47,7 +47,7 @@ namespace skyline::service::nvdrv::device {
if (!handle) [[unlikely]]
return PosixResult::InvalidArgument;
if (!std::ispow2(align)) [[unlikely]]
if (!std::has_single_bit(align)) [[unlikely]]
return PosixResult::InvalidArgument;
// Force page size alignment at a minimum