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John Keeping bebf3d9d44 toolchain/toolchain-wrapper: let recent GCC handle SOURCE_DATE_EPOCH
When using precompiled headers, changing any macros defined on the
command line will invalidate the precompiled header.  With
toolchain-wrapper adding __DATE__ and __TIME__, any commits to Buildroot
will invalidate incremental builds regardless of whether the precompiled
header actually uses those values (affecting _OVERRIDE_SRCDIR).

GCC-7 and later support SOURCE_DATE_EPOCH and use it to define __DATE__
and __TIME__ internally, avoiding any impact on precompiled headers.

Disable the custom handling in toolchain-wrapper if GCC is version 7 or
newer.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 408bc354a9)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-07-16 18:32:12 +02:00
arch arch/x86: adds BR2_X86_CPU_HAS_3DNOW flag 2020-07-16 18:18:26 +02:00
board board/freescale: increase the vfat size 2020-06-01 22:06:30 +02:00
boot boot/grub2: Fix GRUB i386-pc build with Ubuntu gcc 2020-06-21 23:21:31 +02:00
configs configs/raspberrypi{3, 4}_64: enabling BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT no longer needed 2020-05-29 22:59:18 +02:00
docs docs/manual/adding-packages-generic.txt: fix typo 2020-07-05 23:16:28 +02:00
fs fs/ubi: expose BINARIES_DIR to ubinize.cfg 2020-07-05 22:57:42 +02:00
linux {linux, linux-headers}: bump 4.{4, 9, 14, 19}.x / 5.{4, 6, 7}.x series 2020-07-12 22:54:07 +02:00
package package/rpi-firmware: fix startup file names 2020-07-16 18:29:57 +02:00
support package/openjdk-bin: install to host/usr/lib/jvm 2020-07-15 21:54:03 +02:00
system Revert "system: don't attempt swapon/swapoff in inittab if not available" 2020-02-08 20:13:07 +01:00
toolchain toolchain/toolchain-wrapper: let recent GCC handle SOURCE_DATE_EPOCH 2020-07-16 18:32:12 +02:00
utils utils/genrandconfig: drop outdated python-nfc check 2020-03-04 19:08:12 +01:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 .flake8: fix check for 80/132 columns 2019-04-10 12:31:33 +02:00
.gitignore
.gitlab-ci.yml support/testing: add libftdi1 test case 2020-02-23 11:12:09 +01:00
.gitlab-ci.yml.in gitlab-ci: use our updated docker base image 2019-10-27 21:52:28 +01:00
CHANGES Update for 2020.02.3 2020-06-03 16:55:41 +02:00
Config.in Config.in: drop BR2_NEEDS_HOST_{JAVAC,JAR} 2020-03-03 23:55:48 +01:00
Config.in.legacy package/python-pycrypto: remove package 2020-05-31 22:36:03 +02:00
COPYING
DEVELOPERS DEVELOPERS: cleanup rockwellcollins.com maintainers 2020-06-02 11:37:30 +02:00
Makefile Update for 2020.02.3 2020-06-03 16:55:41 +02:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
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