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Before, ccache's configure stage built HTML documentation and man pages depending on if asciidoc is installed. This patch makes it configurable. Pass the new cmake option ENABLE_DOCUMENTATION along and add the asciidoc dependency if necessary. This fixes an issue when ccache's configure stage found asciidoc/a2x on the system outside of the sysroot (e.g. installed via 'apt install asciidoc'). ccache would then decide to build docs and manual pages, but would fail during compilation: the system's a2x could not find the system's asciidoc because it did not reside in the set PATH. By enabling/disabling docs/man page generation explicitly and adding asciidoc to DEPENDS as necessary, this is no longer an issue. [ This corresponds to commit b0aedd74 and parts of commit 1eedc5f8, with the patch replaced by the upstream version. ] (From OE-Core rev: 3ca3c890834152597d8440b77e3d2767ca72c7a6) Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.