staging/pepe2k/include/kernel.mk, branch v21.02.1

build: use -nostdinc and -isystem in NOSTDINC_FLAGS for out-of-tree kernel modules

2021-04-04T09:39:51Z

This resolves issues uncovered by musl updates Signed-off-by: Felix Fietkau (cherry-picked from commit 9ac47ee46918c45b91f4e4d1fa76b1e26b9d57fe)

build: use SPDX license tags

2021-02-05T13:54:47Z

The license folder is a core part of OpenWrt and all GPL-2.0 licensed. Use SPDX license tags to allow machines to check licenses. Signed-off-by: Paul Spooren [rebase, keep some Copyright lines, sharpen commit message] Signed-off-by: Adrian Schmutzler

build: create $(PKG_SYMVERS_DIR) if non-existent

2020-11-19T17:52:15Z

Commit 5d76065 moved the creation of the symvers directory to include/kernel-build.mk. This is fine when building from scratch. But when unpacking an SDK the directory doesn't exist and because the kernel won't be built (again) this directory will not be created by the build system, causing build failure if make tries to copy files into it. This moves the creation of the symvers directory back into include/kernel.mk so that the directory is created in any case. Signed-off-by: Sebastian Kemper

build: pass KBUILD_EXTRA_SYMBOLS with symvers files for kernel module packages

2020-11-13T12:16:37Z

This replaces the previous (deprecated) method of collecting symvers data in $(PKG_BUILD_DIR)/Module.symvers, which does not work on newer kernels Signed-off-by: Felix Fietkau

build: move symvers files to kernel build dir

2020-04-09T07:54:02Z

The symvers files of older kernel versions are incompatible with the ones from 5.4, so changing the kernel version without running make clean was causing build failures in kernel module packages. Fix this by moving the directory, ensuring that symvers files get thrown away with a kernel version change Signed-off-by: Felix Fietkau

build: Add KBUILD_HOSTLDLIBS

2020-01-26T18:20:08Z

In Linux kernel commit 8377bd2b9ee1 ("kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS") HOST_LOADLIBES was renamed to KBUILD_HOSTLDLIBS. This patch adapts the OpenWrt kernel build to this new variable. Without this change the kernel host tools would not link against the libraries found in the staging directory. Signed-off-by: Hauke Mehrtens

kernel.mk: add KCFLAGS to make kmods reproducible

2019-10-09T07:13:44Z

Some kmods (gpio-hotplug, wireguard) store the build path in the compiled files and therefore make it harder to rebuild the official binaries. As the same "iremap" function is used as for other binaries, the change is compatible with gcc7 and 8. Tested with both gcc7 and gcc8 resulting in build path independent reproducible builds. Signed-off-by: Paul Spooren

build: force disable stack validation during kernel build on non-linux systems

2019-10-02T10:55:40Z

The check for libelf in the kernel build is not enough, because the code that uses libelf for stack validation is completely non-portable, as it tries to include asm/types.h and relies on kernel types in user space. Until this is fixed properly, the only solution is to disable this on any non Linux build host Signed-off-by: Felix Fietkau

build: include BUILD_VARIANT in PKG_BUILD_DIR

2019-08-05T21:22:26Z

This changes the default PKG_BUILD_DIR to take BUILD_VARIANT into account (if set), so that packages do not need to manually override PKG_BUILD_DIR just to handle variants. This also updates most base packages with variants to use the updated default PKG_BUILD_DIR. Signed-off-by: Jeffery To

build: skip kernel stack validation when building on macOS

2019-07-03T12:07:59Z

Since we switched to 4.19, the kernel build checks for libelf to decide if it should build tools for stack validation. On macOS, this check fails during target/compile, but succeeds during package build (because of the pkg-config path picking up target libraries). Signed-off-by: Felix Fietkau