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Newer kernels (4.14/v4.15+) have dependencies for the build of modules (and hence external modules). Without these dependencies explicitly in the build chain, you can end up with build failures like: work-shared/qemux86/kernel-source/scripts/extract-cert.c:21:25: fatal error: openssl/bio.h: No such file or directory | #include <openssl/bio.h> | ^ | compilation terminated. | make[2]: *** [scripts/extract-cert] Error 1 | make[1]: *** [scripts] Error 2 To ensure that these headers are in place, and that the scripts use our build environment flags, we add a dependency on openssl-native and use oe_make to invoke the build. Older kernels have no issues with the extra dependency, so there's no need to make this conditional. (From OE-Core rev: 916cb2029d3c97bf12ebf03832b9ba980451dbcf) Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.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.