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sw:yocto:bitbake:vars [2022/10/19 14:00] – niziaksw:yocto:bitbake:vars [2026/03/05 19:45] (current) – niziak
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   * **B** (by default the same as **S**) - directory within build directory, where objects are generated.   * **B** (by default the same as **S**) - directory within build directory, where objects are generated.
   * **D** - directory within build directory, where components are installed (destination directory)   * **D** - directory within build directory, where components are installed (destination directory)
 +
 +<code>
 +Variable name Definition         Typical value
 +-------------  --------------------    --------------------
 +prefix         /usr                    /usr
 +base_prefix (empty)                 (empty)
 +exec_prefix ${base_prefix}         (empty)
 +base_bindir ${base_prefix}/bin /bin
 +base_sbindir ${base_prefix}/sbin /sbin
 +base_libdir ${base_prefix}/lib /lib
 +datadir         ${prefix}/share         /usr/share
 +sysconfdir /etc                 /etc
 +localstatedir /var                 /var
 +infodir         ${datadir}/info         /usr/share/info
 +mandir          ${datadir}/man         /usr/share/man
 +docdir          ${datadir}/doc         /usr/share/doc
 +servicedir /srv                 /srv
 +bindir          ${exec_prefix}/bin /usr/bin
 +sbindir         ${exec_prefix}/sbin /usr/sbin
 +libexecdir ${exec_prefix}/libexec /usr/libexec
 +libdir          ${exec_prefix}/lib /usr/lib
 +includedir ${exec_prefix}/include /usr/include
 +palmtopdir ${libdir}/opie         /usr/lib/opie
 +palmqtdir ${palmtopdir}         /usr/lib/opie
 +</code>
 +
 +
 +====== get current layer dir ======
 +
 +For ''layer.conf'' scope there is [[https://docs.yoctoproject.org/ref-manual/variables.html#term-LAYERDIR|LAYERDIR}]] variable. But this variable is not exported outside.
 +
 +Trick is to define own new variable in ''layer.conf'' which is available in recipes:
 +
 +<code>
 +MY_DISTRO_LAYER_BASE = '${@os.path.normpath("${LAYERDIR}")}'
 +</code>
 +
 +and use in recipe or distro.conf:
 +<code>
 +OVERLAYFS_ETC_INIT_TEMPLATE = "${MY_DISTRO_LAYER_BASE}/files/myboard-overlayfs-preinit.sh.in"
 +</code>