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| Some library vendors do not release source code for their software but do release pre-built binaries. This articel shows how to deal with such libraries.
| | See https://docs.yoctoproject.org/dev-manual/common-tasks.html#working-with-pre-built-libraries |
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| In the example below we work with libraries for the FT4222 USB I/O chip. Libraries are built for x86 32 and 64bit architectures and packaged in zip file. The key steps are as follows
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| * Vendor provides a tarball containing libraries so set SRC_URI appropriately.
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| * Set COMPATIBLE_MACHINE so that recipe cannot be be used with an unsupported architectures. In this example we support Minnowboard Max (32 and 64bit), Intel Edison and qemux86.
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| * We installing, use the MACHINE override to set source directory appropriately.
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| * As vendor provides versioned libraries, we can use <tt>so_oeinstall</tt> to install shared library and creates symbolic links. If vendor does not do this, consult the [[TipsAndTricks/PackagingNonversionedLibrary | Packaging Nonversioned Library article]]
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| * As you cannot guarantee that vendor used the same LDFLAGS as the Yocto build, disable checking as follows
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| INSANE_SKIP_${PN} = "ldflags"
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| * This vendor does not strip debug symbols. If they did, recipe must disable stripping in packaging task as follows
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| INHIBIT_PACKAGE_STRIP = "1"
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| INHIBIT_SYSROOT_STRIP = "1"
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| <pre>
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| SUMMARY = "FTDI FT4222 Library"
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| AUTHOR = "Henry Bruce"
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| SECTION = "libs"
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| LICENSE_FLAGS = "ftdi"
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| LICENSE = "CLOSED"
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| COMPATIBLE_MACHINE = "intel-corei7-64|intel-core2-32|edison|qemux86"
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| # BUILD_NUMBER is set to build number of libft4222 release tarball
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| # Set subdir variable so that files are unpacked unto ${S}
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| BUILD_NUMBER = "35"
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| PR = "r${BUILD_NUMBER}"
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| SRC_URI = "http://www.ftdichip.com/Support/SoftwareExamples/${PN}-${PV}.${BUILD_NUMBER}.tgz;subdir=${PN}-${PV}"
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| SRC_URI[md5sum] = "c5bc189fb5b167daf662ff81c66cde55"
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| SRC_URI[sha256sum] = "df03e50f4a205474eaacadcdb59dc602237e95d48008ede8fc2d1f2493e54845"
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| MACHINE_DIR_intel-corei7-64 = "build-x86_64"
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| MACHINE_DIR_intel-core2-32 = "build-i386"
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| MACHINE_DIR_edison = "build-i386"
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| MACHINE_DIR_qemux86 = "build-i386"
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| do_install () {
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| install -m 0755 -d ${D}${libdir}
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| oe_soinstall ${S}/${MACHINE_DIR}/libft4222.so.${PV}.${BUILD_NUMBER} ${D}${libdir}
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| install -m 0755 -d ${D}${includedir}
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| install -m 0755 ${S}/*.h ${D}${includedir}
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| }
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| </pre>
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