math/suitesparse from ports head -r557893 fails for armv7 by default: "/usr/local/bin/ld: cannot find -lomp"

[Mark Millard]

This was on aarch64 doing a build targeting armv7 via poudriere --but might apply to other platforms that by default do not have LLVM's OpenMP runtime:

    WITHOUT_OPENMP
             Set to not build LLVM's OpenMP runtime.

             This is a default setting on arm/armv6, arm/armv7, mips/mips,
             mips/mips64, powerpc/powerpc, riscv/riscv64 and riscv/riscv64sf.

# poudriere jail -jFBSDFSSDjailArmV7 -i
Jail name:         FBSDFSSDjailArmV7
Jail version:      13.0-CURRENT
Jail arch:         arm.armv7
Jail method:       null
Jail mount:        /usr/obj/DESTDIRs/clang-armv7-installworld-poud
Jail fs:           
Jail updated:      2020-04-21 22:39:35

/usr/obj/DESTDIRs/clang-armv7-installworld-poud is at: head -r368500
(as is the containing aarch64 environment).

Apparently, armv7 (at least) requires a manual/explicit OPENMP=off configuration option for math/suitesparse . Is this intentional?


poudriere reported:

[02:42:51] [01] [00:00:00] Building math/suitesparse | suitesparse-5.8.1
[02:46:41] [01] [00:03:50] Saving math/suitesparse | suitesparse-5.8.1 wrkdir
[02:46:45] [01] [00:03:54] Saved math/suitesparse | suitesparse-5.8.1 wrkdir to: /usr/local/poudriere/data/wrkdirs/FBSDFSSDjailArmV7-default/default/suitesparse-5.8.1.tar
[02:46:55] [01] [00:04:04] Finished math/suitesparse | suitesparse-5.8.1: Failed: build
[02:46:59] [01] [00:04:08] Skipping math/eigen3 | eigen-3.3.8: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping multimedia/ffmpeg | ffmpeg-4.3.1_9,1: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping multimedia/gstreamer1-libav | gstreamer1-libav-1.16.2: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping multimedia/gstreamer1-plugins-core | gstreamer1-plugins-core-1.16: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping x11/lumina | lumina-1.6.0,3: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping x11/lumina-core | lumina-core-1.6.0: Dependent port math/suitesparse | suitesparse-5.8.1 failed
[02:46:59] [01] [00:04:08] Skipping graphics/opencv-core | opencv-core-3.4.1_37: Dependent port math/suitesparse | suitesparse-5.8.1 failed
. . .
[02:48:20] Failed ports: math/suitesparse:build
[02:48:20] Skipped ports: graphics/opencv-core math/eigen3 multimedia/ffmpeg multimedia/gstreamer1-libav multimedia/gstreamer1-plugins-core x11/lumina x11/lumina-core

(That last gives a clue what types of things are blocked by the failure.)

The log showed the -lomp issue:

. . .
/usr/local/bin/ranlib libcholmod.a
/usr/local/bin/ld: cannot find -lomp
c++: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[4]: *** [Makefile:544: /wrkdirs/usr/ports/math/suitesparse/work/SuiteSparse-5.8.1/lib/libcholmod.so.3.0.14] Error 1
gmake[4]: Leaving directory '/wrkdirs/usr/ports/math/suitesparse/work/SuiteSparse-5.8.1/CHOLMOD/Lib'
gmake[3]: *** [Makefile:31: library] Error 2
gmake[3]: Leaving directory '/wrkdirs/usr/ports/math/suitesparse/work/SuiteSparse-5.8.1/CHOLMOD/Lib'
gmake[2]: *** [Makefile:19: library] Error 2
gmake[2]: Leaving directory '/wrkdirs/usr/ports/math/suitesparse/work/SuiteSparse-5.8.1/CHOLMOD'
gmake[1]: *** [Makefile:135: library] Error 2
gmake[1]: Leaving directory '/wrkdirs/usr/ports/math/suitesparse/work/SuiteSparse-5.8.1'
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1
. . .

Other context details . . .

# svnlite info /usr/ports/
Path: /usr/ports
Working Copy Root Path: /usr/ports
URL: svn://svn.freebsd.org/ports/head
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 557893
Node Kind: directory
Schedule: normal
Last Changed Author: manu
Last Changed Rev: 557893
Last Changed Date: 2020-12-13 03:53:57 -0800 (Sun, 13 Dec 2020)

# uname -apKU
FreeBSD FBSDmacch 13.0-CURRENT FreeBSD 13.0-CURRENT #47 r368500M: Thu Dec 10 03:15:10 PST 2020     root at FBSDFHUGE:/usr/obj/cortexA72_clang/arm64.aarch64/usr/src/arm64.aarch64/sys/GENERIC-NODBG  arm64 aarch64 1300131 1300131



===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)