I'm adding a generic-package to Buildroot 2019.02.1. This package (fbi) includes <asm/page.h> in the fbtools.c, but the headers are not available in output/target. Compiling the package causes the following error:
$ make fbi-rebuild [...] CC fbi.o CC fbtools.o fbtools.c:24:30: fatal error: asm/page.h: No such file or directory #include <asm/page.h> ^ compilation terminated. [...] I've added patches to and selected necessary packages for fbi:
$ grep -E '^[^#].*(HEADERS|FBI|JPEG)' .config BR2_KERNEL_HEADERS_VERSION=y BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_9=y BR2_DEFAULT_KERNEL_HEADERS="4.9.17" BR2_PACKAGE_LINUX_HEADERS=y BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0=y [...] BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9=y BR2_TOOLCHAIN_HEADERS_AT_LEAST="4.9" BR2_PACKAGE_FBI=y BR2_PACKAGE_JPEG=y BR2_PACKAGE_JPEG_SIMD_SUPPORT=y BR2_PACKAGE_LIBJPEG=y BR2_PACKAGE_HAS_JPEG=y BR2_PACKAGE_PROVIDES_JPEG="libjpeg" $ for i in `ls package/fbi/000*`; do echo $i; cat $i | grep -E '^[-+][^-+]'; done package/fbi/0001-fix-verion.patch - fprintf(stderr, "fbi version " VERSION + fprintf(stderr, "fbi version 1.32 " package/fbi/0002-fix-makefile.patch - @echo -e "$(make-config-q)" > $@ + @echo "$(make-config-q)" > $@ $ find output/ -name page.h output/build/linux-headers-4.9.17/fs/nilfs2/page.h output/build/linux-headers-4.9.17/include/asm-generic/page.h [...] output/build/linux-headers-4.9.17/arch/score/include/asm/page.h The kernel I use (also 4.9.17) is not part of Buildroot, but I think that shouldn't be a problem.
What is the correct way to compile against the kernel headers within Buildroot?
