Some cross compile question about Halide

[YutRetr0]

Hi, I use cmake and ninja (android-ndk-r20) to compile my project with halide.so. Some libraries can't be found:

E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libz.so.1, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libdl.so.2, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libpthread.so.0, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libstdc++.so.6, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libm.so.6, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libgcc_s.so.1, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: libc.so.6, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)
E:/buildtools/android-ndk-r20/toolchains/llvm/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: warning: ld-linux-aarch64.so.1, needed by D:/projects/simple_MF_fused/build/../dep/halide/bin/libHalide.so, not found (try using -rpath or -rpath-link)

CMakeLists.txt

cmake_minimum_required(VERSION 3.5)
project(halide_test)

set(CAMKE_CXX_STANDARD 14)

set (CURRENT_PATH ${CMAKE_CURRENT_LIST_DIR}/../)
set (HALIDE_DISTRIB_DIR ${CURRENT_PATH}/dep/halide)
include(${HALIDE_DISTRIB_DIR}/halide.cmake)
set (DEP_LIB_PATH ${CURRENT_PATH}/dep)
set (SRC_PATH ${CURRENT_PATH}/src)
set (LIB_PATH ${CURRENT_PATH}/include)
set (LLVM_PATH ./)
set (HALIDE_INC ${CURRENT_PATH}/dep/halide/include)
set (HALIDE_LIB ${CURRENT_PATH}/dep/halide/lib/libHalide.a)
set (HALIDE_TOOLS ${CURRENT_PATH}/dep/halide/tools)
set (HALIDE_DYNAMIC ${CURRENT_PATH}/dep/halide/bin/libHalide.so)


include_directories (${HALIDE_INC}
                    ${HALIDE_TOOLS}
                    ${LIB_PATH})


add_executable (halide_test ${SRC_PATH}/main.cpp)


target_link_libraries (halide_test ${HALIDE_DYNAMIC} )

[alexreinking]

Halide's CMake support is about to be overhauled. See #4644

Hopefully this will simply be resolved when it lands. In the meantime, if you can share a whole project (ideally as a public git repo), along with a (possibly stubbed / dummy) source file that reproduces your issue, we can add it to our tests and make sure this works.

[YutRetr0]

Hi, @alexreinking .

Your suggestion helps me a lot. At first, thank you so much. Then I got a question about using the android-ndk-toolchain to build a simple test project about generator on Windows10(I have been succeed on linux). Which halide's release version I should use? Or I must build the halide with android-ndk-toolchain? If it is necessary, I can push my simple project.