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* on some hosts (e.g. on my gentoo after recent update) it detects OpenMP in do_configure: Run-time dependency OpenMP found: YES 4.5 but then fails in do_compile as shown in: http://errors.yoctoproject.org/Errors/Details/754632/ gcc -o test/fetch-test test/fetch-test.p/fetch-test.c.o -LTOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/usr/lib -LTOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/lib -Wl,--as-needed -Wl,--no-undefined -Wl,--enable-new-dtags -Wl,-rpath-link,TOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/usr/lib -Wl,-rpath-link,TOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/lib -Wl,-rpath,TOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/usr/lib -Wl,-rpath,TOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/recipe-sysroot-native/lib -Wl,-O1 '-Wl,-rpath,$ORIGIN/../pixman' -Wl,-rpath-link,TOPDIR/tmp-glibc/work/x86_64-linux/pixman-native/0.42.2/build/pixman -Wl,--start-group test/libtestutils.a pixman/libpixman-1.so.0.42.2 -pthread -fopenmp -fopenmp -lm -Wl,--end-group gcc: fatal error: cannot read spec file ‘libgomp.spec’: No such file or directory compilation terminated. it's only used in tests, so should be safe to disable for native builds * the check in meson uses /usr/include/omp.h which is provided by libomp even when openmp support is disabled in native gcc in gentoo this happned after switching from 17.1 profile to 23.0 which doesn't include openmp USE flag by default, if you later run depclean it will uninstall libomp as well which will fix this conflict in meson's OpenMP autodetection (From OE-Core rev: b64d4e30bbd972d0665cc310bc0fdde3b49f0367) Signed-off-by: Martin Jansa <martin.jansa@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>