Fix an error while building target/linux x64 on macOS 15.4 host,
due to the PATH_MAX macro being redefined:
mkdir -p /Volumes/test/openwrt/build_dir/target-x86_64_musl/linux-x86_64/linux-6.6.86/tools/objtool && make O=/Volumes/test/openwrt/build_dir/target-x86_64_musl/linux-x86_64/linux-6.6.86 subdir=tools/objtool --no-print-directory -C objtool
exec-cmd.c:15:9: error: 'PATH_MAX' macro redefined [-Werror,-Wmacro-redefined]
15 | #define PATH_MAX 4096
| ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/syslimits.h:103:9: note: previous definition is here
103 | #define PATH_MAX 1024 /* max bytes in pathname */
| ^
exec-cmd.c is compiled as part of objtool to run on the host, and
therefore host headers are used, where PATH_MAX is already defined.
Using an old OpenWRT snapshot from 2025-02-16, where linux-6.6.77
used to build correctly, does not help. Reverting from Xcode 16.3 to
16.2 does not help either.
Signed-off-by: Georgi Valkov <gvalkov@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18530
Signed-off-by: Robert Marko <robimarko@gmail.com>
Trying to compile x86 or x86_64 on macOS will fail with:
openwrt/build_dir/target-x86_64_musl/linux-x86_64/linux-6.6.36/tools/include/linux/rbtree.h:21:10: fatal error: 'linux/stddef.h' file not found
After some digging, it seems that we dropped the old 212-tools_portability
patch when 6.6 x86 support was added, then Felix added back some parts of
it in ("kernel: fix tools build breakage on macos with x86") but trying to
build x86 kernels will still fail.
So, lets add more of the required changes from the 212-tools_portability
patch so that x86 kernels build on macOS.
Fixes: 69b145188f ("generic: 6.6: Removal of tools_portability.patch already included in kernel 6.6")
Link: https://github.com/openwrt/openwrt/pull/15904
Signed-off-by: Robert Marko <robimarko@gmail.com>
Make sure all patches can again be applied using 'git am' on the
corresponding linux-stable git tree.
Fixes: a7ae4ed0a3 ("kernel: fix tools build breakage on macos with x86")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
