mips, mips64 supported?

[yaocl]

How to add mips and mips64 cpu architecture supporting including pjsip and openssl? thx.

[alexbbb]

mips and mips64 are not supported currently. It's necessary to implement them in the build scripts. To do that, you can follow these steps:

• Edit line 59 in config.conf: https://github.com/alexbbb/pjsip-android-builder/blob/master/config.conf#L59 and add "mips" "mips64". In the development stage I suggest you to simply comment the line and add the following:

TARGET_ARCHS=("mips" "mips64")

so you can easily test only those two architectures, without compiling for the other archs and losing time

• Add this to line 166 of ./openssl-build (https://github.com/alexbbb/pjsip-android-builder/blob/master/openssl-build#L166):

elif [ "$OPENSSL_TARGET_ABI" == "mips" ]
then
    #code to compile for mips

elif [ "$OPENSSL_TARGET_ABI" == "mips64" ]
then
    #code to compile for mips64

• Add this before line 53 in ./openh264-build-target-archs: (https://github.com/alexbbb/pjsip-android-builder/blob/master/openh264-build-target-archs#L53)

elif [ "$arch" == "mips" ]
    then
        ARGS="${ARGS}mips"
elif [ "$arch" == "mips64" ]
    then
        ARGS="${ARGS}mips64"

• Modify line 95 of ./prepare-build-system: (https://github.com/alexbbb/pjsip-android-builder/blob/master/prepare-build-system#L95) to be:

sed -i 's/APP_ABI := armeabi armeabi-v7a arm64-v8a x86/APP_ABI := armeabi armeabi-v7a arm64-v8a x86 x86_64 mips mips64/g' jni/Application.mk

When you have executed ./prepare-build-system for the first time, you can set the following flags in config.conf to zero, to compile only OpenSSL, Libyuv and OpenH264 when you execute ./prepare-build-system:

SETUP_PACKAGES=0
DOWNLOAD_NDK=0
DOWNLOAD_SDK=0
DOWNLOAD_TARGET_API=0
DOWNLOAD_PJSIP=0
DOWNLOAD_SWIG=0

so you can test the compilation of those libraries. When you're done implementing the necessary code to make them compile, you can go ahead and execute ./build to build also pjsip. Feel free to fork the project and make the changes you need. After that, if you want you can send me a pull request.

[yaocl]

I modified the files as u described. With the modifications below, openssl, libyuv and openh264 for mips and mips64 are built

• ./openssl-build

elif [ "$OPENSSL_TARGET_ABI"=="mips" ]
then
    #mips
    ${NDK_MAKE_TOOLCHAIN} --platform=android-${OPENSSL_TARGET_API} \
                          --toolchain=mipsel-linux-android-${OPENSSL_GCC_VERSION} \
                          --install-dir="${OPENSSL_TMP_FOLDER}/android-toolchain-mipsel"

    export TOOLCHAIN_PATH="${OPENSSL_TMP_FOLDER}/android-toolchain-mipsel/bin"
    export TOOL=mipsel-linux-android
    export NDK_TOOLCHAIN_BASENAME=${TOOLCHAIN_PATH}/${TOOL}
    export CC=$NDK_TOOLCHAIN_BASENAME-gcc
    export CXX=$NDK_TOOLCHAIN_BASENAME-g++
    export LINK=${CXX}
    export LD=$NDK_TOOLCHAIN_BASENAME-ld
    export AR=$NDK_TOOLCHAIN_BASENAME-ar
    export RANLIB=$NDK_TOOLCHAIN_BASENAME-ranlib
    export STRIP=$NDK_TOOLCHAIN_BASENAME-strip
    export ARCH_FLAGS=
    export ARCH_LINK=
    export CPPFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 "
    export CXXFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 -frtti -fexceptions "
    export CFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 "
    export LDFLAGS=" ${ARCH_LINK} "
    cd ${OPENSSL_TMP_FOLDER}
    ./Configure android-mips --openssldir=${OPENSSL_OUTPUT_PATH}
    build_library

elif [ "$OPENSSL_TARGET_ABI"=="mips64" ]
then
    #mips64
    echo "mips64"
    ${NDK_MAKE_TOOLCHAIN} --platform=android-${OPENSSL_TARGET_API} \
                          --toolchain=mips64el-linux-android-${OPENSSL_GCC_VERSION} \
                          --install-dir="${OPENSSL_TMP_FOLDER}/android-toolchain-mips64el"

    export TOOLCHAIN_PATH="${OPENSSL_TMP_FOLDER}/android-toolchain-mips64el/bin"
    export TOOL=mips64el-linux-android
    export NDK_TOOLCHAIN_BASENAME=${TOOLCHAIN_PATH}/${TOOL}
    export CC=$NDK_TOOLCHAIN_BASENAME-gcc
    export CXX=$NDK_TOOLCHAIN_BASENAME-g++
    export LINK=${CXX}
    export LD=$NDK_TOOLCHAIN_BASENAME-ld
    export AR=$NDK_TOOLCHAIN_BASENAME-ar
    export RANLIB=$NDK_TOOLCHAIN_BASENAME-ranlib
    export STRIP=$NDK_TOOLCHAIN_BASENAME-strip
    export ARCH_FLAGS=
    export ARCH_LINK=
    export CPPFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 "
    export CXXFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 -frtti -fexceptions "
    export CFLAGS=" ${ARCH_FLAGS} -fpic -ffunction-sections -funwind-tables -fstack-protector -fno-strict-aliasing -finline-limit=64 "
    export LDFLAGS=" ${ARCH_LINK} "
    cd ${OPENSSL_TMP_FOLDER}
    ./Configure android-mips64 --openssldir=${OPENSSL_OUTPUT_PATH}
    build_library

[alexbbb]

So, with those modifications you are now able to successfully compile openssl, libyuv, openh264 and pjsip for mips and mips64?

[yaocl]

Yes, the compilation for mips and mips64 including openssl, libyuv, openh264 and pjsip are ok.

I found that we need to change the TARGET_ARCHS build order and put "mips" and "mips64" before "x86_64". Executing ./prepare-build-system to compile openh264, the process stopped in "x86_64" because of compilation error. It's another issue, not an issue in "mips".

• config.conf

TARGET_ARCHS=("armeabi" "armeabi-v7a" "mips" "mips64" "x86" "x86_64" "arm64-v8a")

[alexbbb]

@yaocl Thank you! The issue you encountered when building x86_64 is because that target ABI is supported only starting from API 21 (http://developer.android.com/ndk/guides/x86-64.html).

[yaocl]

I had set OPENH264_TARGET_NDK_LEVEL=21, TARGET_ANDROID_API=21 But I got error message in openh264-build-output/logs/x86_64.log

I just download your binary release from [https://github.com/alexbbb/pjsip-android-builder/releases/download/v1.0.0/pjsip-2.4.5-android-21.tar.gz] and I did not see libopenh264.so in x86_64, arm64-v8a folders.

[alexbbb]

You're right, OpenH264 build issues for x86_64 and arm64 has not been resolved yet: https://github.com/alexbbb/pjsip-android-builder/issues/2 I need some help on that. Do you have any clues? I think it could be because OpenH264 1.0.0 is too old and doesn't support those archs. Newer OpenH264 versions are available, but I was unable to make them work with PJSIP yet.