relibc_compiler-builtins/ci/env.sh

case $TRAVIS_OS_NAME in
    linux)
        export HOST=x86_64-unknown-linux-gnu
        export NM=nm
        export OBJDUMP=objdump
        ;;
    osx)
        export HOST=x86_64-apple-darwin
        export NM=gnm
        export OBJDUMP=gobjdump
        ;;
esac

case $TARGET in
    aarch64-unknown-linux-gnu)
        export PREFIX=aarch64-linux-gnu-
        export QEMU_LD_PREFIX=/usr/aarch64-linux-gnu
        ;;
    arm*-unknown-linux-gnueabi)
        export PREFIX=arm-linux-gnueabi-
        export QEMU_LD_PREFIX=/usr/arm-linux-gnueabi
        ;;
    arm-unknown-linux-gnueabihf)
        export PREFIX=arm-linux-gnueabihf-
        export QEMU_LD_PREFIX=/usr/arm-linux-gnueabihf
        ;;
    armv7-unknown-linux-gnueabihf)
        export PREFIX=arm-linux-gnueabihf-
        export QEMU_LD_PREFIX=/usr/arm-linux-gnueabihf
        ;;
    mips-unknown-linux-gnu)
        export PREFIX=mips-linux-gnu-
        export QEMU_LD_PREFIX=/usr/mips-linux-gnu
        ;;
    mipsel-unknown-linux-gnu)
        export PREFIX=mipsel-linux-gnu-
        export QEMU_LD_PREFIX=/usr/mipsel-linux-gnu
        ;;
    powerpc-unknown-linux-gnu)
        export PREFIX=powerpc-linux-gnu-
        export QEMU_LD_PREFIX=/usr/powerpc-linux-gnu
        ;;
    powerpc64-unknown-linux-gnu)
        export PREFIX=powerpc64-linux-gnu-
        export QEMU_LD_PREFIX=/usr/powerpc64-linux-gnu
        ;;
    powerpc64le-unknown-linux-gnu)
        export PREFIX=powerpc64le-linux-gnu-
        export QEMU_LD_PREFIX=/usr/powerpc64le-linux-gnu
        # Issue #2. QEMU doesn't work
        export RUN_TESTS=n
        ;;
    thumbv*-none-eabi)
        export CARGO=xargo
        export PREFIX=arm-none-eabi-
        # Bare metal targets. No `std` or `test` crates for these targets.
        export RUN_TESTS=n
        ;;
esac