Windows 编译 OLLVM NDK 使用

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14.0.6
based on r450784d
for additional information on LLVM revision and cherry-picks, see clang_source_info.md

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git clone --depth=1 -b release/14.x [email protected]:llvm/llvm-project.git
cd llvm-project
wget https://heroims.github.io/obfuscator/NewPass/ollvm14.patch
git apply ollvm14.patch
git apply --reject --ignore-whitespace ollvm14.patch

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cmake -S llvm -B build -G Ninja -DLLVM_ENABLE_PROJECTS="clang" -DCMAKE_BUILD_TYPE=Release -DLLVM_INCLUDE_TESTS=OFF -DLLVM_ENABLE_NEW_PASS_MANAGER=OFF

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cmake --build build -j16

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> Task :app:configureCMakeDebug[armeabi-v7a] FAILED
C/C++: CMake Error at C:/Users/xiaoqi/AppData/Local/Android/Sdk/cmake/3.22.1/share/cmake-3.22/Modules/CMakeTestCCompiler.cmake:69 (message):
C/C++:   The C compiler
C/C++:     "C:/Users/xiaoqi/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe"
C/C++:   is not able to compile a simple test program.
C/C++:   It fails with the following output:
C/C++:     Change Dir: C:/Users/xiaoqi/AndroidStudioProjects/NDK/app/.cxx/Debug/6y611i46/armeabi-v7a/CMakeFiles/CMakeTmp
C/C++:   
C/C++:     Run Build Command(s):C:\Users\xiaoqi\AppData\Local\Android\Sdk\cmake\3.22.1\bin\ninja.exe cmTC_cd6c3 && [1/2] Building C object CMakeFiles/cmTC_cd6c3.dir/testCCompiler.c.o
C/C++:     [2/2] Linking C executable cmTC_cd6c3
C/C++:     FAILED: cmTC_cd6c3 
C/C++:     cmd.exe /C "cd . && C:\Users\xiaoqi\AppData\Local\Android\Sdk\ndk\25.1.8937393\toolchains\llvm\prebuilt\windows-x86_64\bin\clang.exe --target=armv7-none-linux-androideabi24 --sysroot=C:/Users/xiaoqi/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/sysroot -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -static-libstdc++ -Wl,--build-id=sha1 -Wl,--no-rosegment -Wl,--fatal-warnings -Wl,--gc-sections -Wl,--no-undefined -Qunused-arguments -Wl,--gc-sections CMakeFiles/cmTC_cd6c3.dir/testCCompiler.c.o -o cmTC_cd6c3  -latomic -lm && cd ."
C/C++:     ld: error: unable to find library -latomic
C/C++:     ld: error: cannot open C:/Users/xiaoqi/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/lib/clang/14.0.6/lib/linux/libclang_rt.builtins-arm-android.a: No such file or directory
C/C++:     ld: error: unable to find library -l:libunwind.a
C/C++:     ld: error: cannot open C:/Users/xiaoqi/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/lib/clang/14.0.6/lib/linux/libclang_rt.builtins-arm-android.a: No such file or directory
C/C++:     ld: error: unable to find library -l:libunwind.a
C/C++:     clang: error: linker command failed with exit code 1 (use -v to see invocation)
C/C++:     ninja: build stopped: subcommand failed.
C/C++:   
C/C++:   
C/C++:   
C/C++:   CMake will not be able to correctly generate this project.
C/C++: Call Stack (most recent call first):
C/C++:   CMakeLists.txt:12 (project)

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android {
    defaultConfig {
        extrnalNativeBuild {
            cmake {
                cppFlags '-mllvm -fla'
            }
        }
    }
}

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android {
    compileSdk 32
    ndkVersion "21.4.7075529"

    defaultConfig {
        applicationId "com.cat.stalker"
        externalNativeBuild {
            cmake {
                abiFilters 'arm64-v8a'
                cppFlags "-std=c++14 -fexceptions -fvisibility=hidden"
                cppFlags "-mllvm -fla -mllvm -split -mllvm -split_num=3 -mllvm -sub -mllvm -sub_loop=3 -mllvm -sobf"
            }
        }
        ndk {
            abiFilters "arm64-v8a"
        }
}

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android {
    ndkVersion "25.1.8937393"
  
    namespace 'com.wwxiaoqi.ndk'
    compileSdk 34

    defaultConfig {

        externalNativeBuild {
            cmake {
                cppFlags '-std=c++17 -fexceptions -fvisibility=hidden'
                cppFlags "-mllvm -fla -mllvm -split -mllvm -split_num=3 -mllvm -sub -mllvm -sub_loop=3 -mllvm -sobf"
            }
        }
    }

    externalNativeBuild {
        cmake {
            path file('src/main/cpp/CMakeLists.txt')
            version '3.22.1'
        }
    }
}

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# 设置 llvm 混淆编译
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mllvm -fla -mllvm -sub -mllvm -sobf")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mllvm -fla -mllvm -sub -mllvm -sobf")

# 设置 llvm debug 模式混淆编译
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -mllvm -fla -mllvm -sobf")
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -mllvm -fla -mllvm -sobf")
  
# 设置 llvm release 模式混淆编译
SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mllvm -fla -mllvm -sub -mllvm -bcf -mllvm -sobf")
SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -mllvm -fla -mllvm -sub -mllvm -bcf -mllvm -sobf")

# 深度混淆
SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mllvm -bcf -mllvm -bcf_loop=4 -mllvm -bcf_prob=100 -mllvm -sub -mllvm -sub_loop=2 -mllvm -fla -mllvm -sobf -mllvm -split")

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__attribute((__annotate__("bcf")))
__attribute((__annotate__("fla")))
__attribute((__annotate__("sub")))
__attribute((__annotate__("split")))
__attribute((__annotate__("sobf")))
void func(){
	xxx
}