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1c890f7418
With the following defconfig:
BR2_aarch64=y
BR2_BINUTILS_VERSION_2_28_X=y
BR2_GCC_VERSION_4_9_X=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
The build fail with this error:
In file included from ../sysdeps/ieee754/flt-32/math_config.h:23:0,
from ../sysdeps/ieee754/flt-32/e_expf.c:29:
../sysdeps/aarch64/fpu/math_private.h: In function 'roundtoint':
../sysdeps/aarch64/fpu/math_private.h:311:3: error: implicit declaration of function 'vrndn_f64' [-Werror=implicit-function-declaration]
return vget_lane_f64 (vrndn_f64 (vld1_f64 (&x)), 0);
^
cc1: all warnings being treated as errors
vrndn_f64 function has been introduced in glibc code since version 2.27 [1].
So we can't build a glibc based toolchain with gcc 4.9 anymore.
Add a new dependency in the toolchain infra to avoid selecting
glibc toolchain using gcc 4.9.
[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=72aa623345ada1276ed89dbc00fdff9639cb8eaf
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 1380f4c9a6)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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