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Thomas De Schampheleire 4c24006b0e package/dtc: additional fix of include guards for older u-boot 
With recent dtc but old u-boot, compilation issues occur related to libfdt.
These problems really are u-boot issue since it does not properly set
include paths so that its own headers are included. Nevertheless, since the
u-boot version is typically decided by users and stuck at some version
provided by a SoC or board vendor, it is not feasible to fix those old
versions.

Instead, already several fixes were made in the past, in Buildroot.
See commits:

c7ffd8a75d "package/dtc: fix include guards for older kernel/u-boot"
f437bf547c "uboot: fix build for older uboot source trees"
bf73334232 "uboot: fix build when libfdt-devel is installed system-wide"
0bf80e4bcd "uboot: ensure host includes are searched before system default
                includes"
b15a7a62d3 "uboot: revert "uboot: use local libfdt.h""
baae5156ce "uboot: use local fdt headers"
3a6573ccee "uboot: use local libfdt.h"

Commit c7ffd8a75d fixes the problem caused by
dtc having changed their include guards from _FOO_H to FOO_H (leading
underscore removed). Old u-boot would still use _FOO_H, which (combined with
host-dtc headers that use FOO_H) would cause the inclusion of two different
copies of the same nominal include file, e.g. libfdt.h or libfdt_env.h,
causing 'error: redefinition of xxx' compilation issues.
The fix sets the 'new' include guard when the 'old' one is detected,
preventing a second inclusion of the same nominal file.

For some u-boot versions, however, this change not only needs to be made in
libfdt.h and libfdt_env.h, but also in 'fdt.h'.

Update the dtc patch to do just that.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2019-02-21 23:50:59 +01:00
arch arch/mips: add (Marvell) Octeon III processor 2019-02-04 17:30:18 +01:00
board configs/qemu: Update defconfigs to Linux 4.19.16 2019-02-13 08:41:29 +01:00
boot boot/uboot: fix order of Config.in properties 2019-02-06 22:21:15 +01:00
configs configs/orangepi_one_plus: fix kernel headers option 2019-02-14 21:48:04 +01:00
docs docs/website/news.html: add 2019.02-rc1 announcement link 2019-02-13 11:06:57 +01:00
fs fs/common.mk: make sure that static devices from packages are created 2018-12-04 21:53:14 +01:00
linux linux: don't check hashes for user-supplied patches 2019-02-17 15:22:42 +01:00
package package/dtc: additional fix of include guards for older u-boot 2019-02-21 23:50:59 +01:00
support support/config-fragments/autobuild: use external toolchains in RISC-V configs 2019-02-14 21:53:19 +01:00
system system: allow selecting merged /usr along with custom rootfs skeleton 2019-02-06 17:11:38 +01:00
toolchain toolchain: add variadic MI thunk support flag 2019-02-04 21:53:20 +01:00
utils utils/scanpypi: protect against zip-slip vulnerability in zip/tar handling 2019-02-12 21:27:35 +01:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 .flake8: ignore utils/diffconfig 2018-03-13 22:37:54 +01:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
.gitlab-ci.yml configs/rock64: new defconfig 2019-02-06 21:56:38 +01:00
.gitlab-ci.yml.in .gitlab-ci.yml: use "extends" keyword 2019-02-06 11:40:28 +01:00
CHANGES Update for 2019.02-rc1 2019-02-13 09:03:54 +01:00
Config.in infra: add force build flag for host dependencies 2019-02-04 15:52:44 +01:00
Config.in.legacy package/mongodb: new package 2019-02-12 20:13:40 +01:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
DEVELOPERS DEVELOPERS: update email address for Gary Bisson 2019-02-20 23:40:58 +01:00
Makefile Update for 2019.02-rc1 2019-02-13 09:03:54 +01:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README README: add reference to submitting-patches 2016-02-01 19:16:08 +01:00

README 

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on Freenode IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches