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On Mon, Dec 7, 2015 at 10:13 AM, Joseph Myers <joseph@codesourcery.com> wrote: > On Mon, 7 Dec 2015, Paul Pluzhnikov wrote: > >> Testing with (gcc-4.8 Ubuntu 4.8.4-2ubuntu1~14.04) 4:4.8.2-1ubuntu6 >> fails for apparently unrelated reasons: >> >> build/math/test-double-vlen2-wrappers.o: In function `cos_vlen2': >> /glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:24: >> undefined reference to `_ZGVbN2v_cos' >> /glibc-git/build-system-gcc/math/test-double-vlen2-wrappers.o: In >> function `sin_vlen2': >> /glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:25: >> undefined reference to `_ZGVbN2v_sin' >> ... etc. > > You should raise that with Andrew Senkevich, including details of whether > libmvec got built, what symbols it exports, the command line used for that > link, etc. This continues to fail. mkdir /tmp/build; cd /tmp/build; ~/Archive/glibc-git/configure --prefix=/usr make -j40 && make check ... gcc -nostdlib -nostartfiles -o /tmp/glibc-build/math/test-double-vlen2 -Wl,-z,combreloc -Wl,-z,relro -Wl,--hash-style=both /tmp/glibc-build/csu/crt1.o /tmp/glibc-build/csu/crti.o `gcc --print-file-name=crtbegin.o` /tmp/glibc-build/math/test-double-vlen2.o /tmp/glibc-build/math/libm.so.6 /tmp/glibc-build/mathvec/libmvec.so.1 /tmp/glibc-build/math/test-double-vlen2-wrappers.o -Wl,-dynamic-linker=/lib64/ld-linux-x86-64.so.2 -Wl,-rpath-link=/tmp/glibc-build:/tmp/glibc-build/math:/tmp/glibc-build/elf:/tmp/glibc-build/dlfcn:/tmp/glibc-build/nss:/tmp/glibc-build/nis:/tmp/glibc-build/rt:/tmp/glibc-build/resolv:/tmp/glibc-build/crypt:/tmp/glibc-build/mathvec:/tmp/glibc-build/nptl /tmp/glibc-build/libc.so.6 /tmp/glibc-build/libc_nonshared.a -Wl,--as-needed /tmp/glibc-build/elf/ld.so -Wl,--no-as-needed -lgcc -Wl,--as-needed -lgcc_s -Wl,--no-as-needed `gcc --print-file-name=crtend.o` /tmp/glibc-build/csu/crtn.o /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `cos_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:24: undefined reference to `_ZGVbN2v_cos' /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `sin_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:25: undefined reference to `_ZGVbN2v_sin' /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `sincos_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:26: undefined reference to `_ZGVbN2vvv_sincos' /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `log_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:27: undefined reference to `_ZGVbN2v_log' /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `exp_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:28: undefined reference to `_ZGVbN2v_exp' /tmp/glibc-build/math/test-double-vlen2-wrappers.o: In function `pow_vlen2': /Archive/glibc-git/math/../sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c:29: undefined reference to `_ZGVbN2vv_pow' collect2: error: ld returned 1 exit status ../Rules:154: recipe for target '/tmp/glibc-build/math/test-double-vlen2' failed make[2]: *** [/tmp/glibc-build/math/test-double-vlen2] Error 1 make[2]: Leaving directory '/Archive/glibc-git/math' Makefile:214: recipe for target 'math/tests' failed make[1]: *** [math/tests] Error 2 make[1]: Leaving directory '/Archive/glibc-git' Makefile:9: recipe for target 'check' failed make: *** [check] Error 2 $ readelf -Ws /tmp/glibc-build/mathvec/libmvec.so.1 | grep _ZGVbN2vvv_sincos 26: 0000000000001ec0 35 IFUNC GLOBAL DEFAULT 13 _ZGVbN2vvv_sincos@@GLIBC_2.22 54: 0000000000001ec0 35 IFUNC LOCAL DEFAULT 13 __GI__ZGVbN2vvv_sincos 105: 0000000000001ef0 109 FUNC LOCAL DEFAULT 13 _ZGVbN2vvv_sincos_sse2 108: 0000000000003f40 874 FUNC LOCAL DEFAULT 13 _ZGVbN2vvv_sincos_sse4 196: 0000000000001ec0 35 IFUNC GLOBAL DEFAULT 13 _ZGVbN2vvv_sincos The problem appears to be that test-double-vlen2-wrappers.o is on the link line after libmvec.so.1, and indeed if I move libmvec.so.1 after test-double-vlen2-wrappers.o, the link succeeds. Attached patch fixes the problem. Ok for trunk? Thanks, 2016-01-18 Paul Pluzhnikov <ppluzhnikov@google.com> * math/Makefile (libm-vec-tests): Move libraries after wrappers.o -- Paul Pluzhnikov
Attachment:
glibc-20160118.txt
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