[Bug 1792600] Re: cross-toolchain-base ftbfs with linux-4.18

[Matthias Klose]

that's how the "cross" build fails:

  WRAP    arch/arm64/include/generated/asm/xor.h
  UPD     include/generated/uapi/linux/version.h
  UPD     include/generated/utsrelease.h
  HOSTCC  scripts/basic/fixdep
  CC      kernel/bounds.s
gcc: error: unrecognized command line option '-mlittle-endian'; did you mean '-fconvert=little-endian'?
make[5]: *** [Kbuild:21: kernel/bounds.s] Error 1
make[4]: *** [Makefile:1112: prepare0] Error 2
make[3]: *** [debian/rules:4: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2
make[2]: *** [scripts/package/Makefile:72: deb-pkg] Error 2
make[1]: *** [Makefile:1370: deb-pkg] Error 2

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https://bugs.launchpad.net/bugs/1792600

Title:
  cross-toolchain-base ftbfs with linux-4.18

Status in cross-toolchain-base package in Ubuntu:
  Confirmed

Bug description:
  according to the build logs, the build process changed and calls the
  host compiler even for building the header files.  This worked in
  4.15, but not anymore in 4.18.

  To limit the build to one cross arch:

  CROSS_ARCHS=arm64 DEB_BUILD_OPTIONS=... dpkg-buildpackage -b

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