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    <p>Hi everyone,</p>

    <p><br>

    </p>

    <p>i'm trying to use ExternalProject_Add like the following:</p>

    <pre>set(BOOST_VERSION 1.68.0)

set(BOOST_VERSION_NODOTS 1_68_0)

set(BOOST_URI <a class="moz-txt-link-freetext" href="https://dl.bintray.com/boostorg/release/$">https://dl.bintray.com/boostorg/release/$</a>{BOOST_VERSION}/source/boost_${BOOST_VERSION_NODOTS}.tar.gz)

set(BOOST_HASH 5d8b4503582fffa9eefdb9045359c239)

ExternalProject_Add(external_boost

        PREFIX ${CMAKE_BINARY_DIR}/boost

                URL ${BOOST_URL}

        DOWNLOAD_DIR ${CMAKE_BINARY_DIR}/boost

                URL_HASH MD5=${BOOST_HASH}

        CONFIGURE_COMMAND  cd ${CMAKE_BINARY_DIR}/boost/src/external_boost/ && ./bootstrab --prefix=${OUTPUT_PATH}/boost

                BUILD_COMMAND  cd ${CMAKE_BINARY_DIR}/boost/src/external_boost/ && ./b2

                BUILD_IN_SOURCE 1

                INSTALL_DIR ${OUTPUT_PATH}/boost

The problem is that he tells me that the md5 sum isn't correct, but i did md5sum ${BOOST_URL}.

I now play around with this for nearnly an hour and i allways get the same error.

I hope someone here can help me out.

best regards,

Steven Truppe

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