[Buildroot] [Bug 9571] New: buildroot fails while building opencv for arm64 platform

[Buildroot] [Bug 9571] New: buildroot fails while building opencv for arm64 platform

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=9571

            Bug ID: 9571
           Summary: buildroot fails while building opencv for arm64
                    platform
           Product: buildroot
           Version: unspecified
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: saik.iitk at gmail.com
                CC: buildroot at uclibc.org
  Target Milestone: ---

i am getting the following error while building opencv. During opencv_core
building, it is linking the following 


sw/tools/linaro/gcc-aarch64-linux-gnu-4.9-2014.09/bin/../lib/gcc/aarch64-linux-gnu/4.9.2/../../../../aarch64-linux-gnu/bin/ld:
/local_disk/sai/wpu_aug23/wpu-sw/src/common/utils/buildroot/output/host/usr/aarch64-buildroot-linux-gnu/sysroot/usr/lib/aarch64-linux-gnu/libm.a(k_standard.o)(.text+0x318):
unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol
`stderr@@GLIBC_2.17'


and sinc libm.a is not built with option "-fPIC", The error can come and libm.a
is default generated part of buildroot and i cannot build here. 


Please have a look

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[Buildroot] [Bug 9571] buildroot fails while building opencv for arm64 platform

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=9571

--- Comment #1 from Samuel Martin <s.martin49@gmail.com> ---
To investigate this bug we need more details:
- Buildroot version
- Buildroot defconfig used leading to the situation
- opencv package built? (opencv or opencv3)
- is it a static only build?

Have you tried to run: 'make clean && make' ?

Have you tweak the opencv.mk (or opencv3.mk) file? if yes, how?

Have you build the toolchain, then change some critical configurations
requiring a full rebuild [1]?


[1] http://nightly.buildroot.org/manual.html#full-rebuild

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[Buildroot] [Bug 9571] buildroot fails while building opencv for arm64 platform

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=9571

sai <saik.iitk@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #2 from sai <saik.iitk@gmail.com> ---
this issue is related to tool chain which i used downloaded one from linaro. If
i use other tool chain version from linaro ,it is working now


thanks

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