You can disregard this thread... the problem was pilot error. I understand now why the "compile" wrapper was getting used. The probe "checking whether $CC and cc understand -c and -o together... " is run WITHOUT $CFLAGS.
In my case CFLAGS included an argument required to locate the compiler's config files and consequently the probe failed. I consider that "pilot error" on my part and have moved the config option to the definition of CC instead (and the problem goes away) So, while there *may* exist some valid set of conditions under which the current configure/build could produce the reported failure, my test did NOT represent a valid set of conditions. -Paul On Sat, Aug 9, 2014 at 1:29 PM, Paul Hargrove <phhargr...@lbl.gov> wrote: > One note regarding my report below: > > I have noticed that autoconf has chosen to use "$srcdir/config/compile > xlc" instead of just "xlc" (I set CC=xlc). I strongly suspect this is > related, and am investigating why the compile wrapper is used. However, > independent of that there does seem to be some flaw in how the atomics are > getting built on this configuration. > > -Paul > > > On Sat, Aug 9, 2014 at 1:22 PM, Paul Hargrove <phhargr...@lbl.gov> wrote: > >> Building v1.8 nightly tarball with xlc-11.1 on a ppc64/linux platform: >> >> Making all in asm >> make[2]: Entering directory >> `/home/hargrov1/OMPI/openmpi-1.8-latest-bluedrop-64-xlc/BLD/opal/asm' >> CC asm.lo >> rm -f atomic-asm.S >> ln -s "../../opal/asm/generated/atomic-local.s" atomic-asm.S >> CPPAS atomic-asm.lo >> CCLD libasm.la >> ar: .libs/atomic-asm.o: No such file or directory >> >> The related portion of the configure output: >> >> *** Assembler >> checking dependency style of >> /home/hargrov1/OMPI/openmpi-1.8-latest-bluedrop-64-xlc/openmpi-1.8.2rc4r32480/config/compile >> xlc... none >> checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B >> checking the name lister (/usr/bin/nm -B) interface... BSD nm >> checking for fgrep... /bin/grep -F >> checking if need to remove -g from CCASFLAGS... no >> checking whether to enable smp locks... yes >> checking if .proc/endp is needed... no >> checking directive for setting text section... .text >> checking directive for exporting symbols... .globl >> checking for objdump... objdump >> checking if .note.GNU-stack is needed... no >> checking suffix for labels... : >> checking prefix for global symbol labels... >> checking prefix for lsym labels... .L >> checking prefix for function in .type... @ >> checking if .size is needed... yes >> checking if .align directive takes logarithmic value... yes >> checking if PowerPC registers have r prefix... no >> checking if >> /home/hargrov1/OMPI/openmpi-1.8-latest-bluedrop-64-xlc/openmpi-1.8.2rc4r32480/config/compile >> xlc supports GCC inline assembly... yes >> checking if >> /home/hargrov1/OMPI/openmpi-1.8-latest-bluedrop-64-xlc/openmpi-1.8.2rc4r32480/config/compile >> xlc supports DEC inline assembly... no >> checking if >> /home/hargrov1/OMPI/openmpi-1.8-latest-bluedrop-64-xlc/openmpi-1.8.2rc4r32480/config/compile >> xlc supports XLC inline assembly... no >> checking for assembly format... default-.text-.globl-:--.L-@-1-1-0-1-0 >> checking for asssembly architecture... POWERPC64 >> checking for builtin atomics... BUILTIN_NO >> checking for perl... perl >> checking for pre-built assembly file... no (not in asm-data) >> checking whether possible to generate assembly file... yes >> checking for atomic assembly filename... atomic-local.s >> >> -Paul >> >> -- >> Paul H. Hargrove phhargr...@lbl.gov >> Future Technologies Group >> Computer and Data Sciences Department Tel: +1-510-495-2352 >> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900 >> > > > > -- > Paul H. Hargrove phhargr...@lbl.gov > Future Technologies Group > Computer and Data Sciences Department Tel: +1-510-495-2352 > Lawrence Berkeley National Laboratory Fax: +1-510-486-6900 > -- Paul H. Hargrove phhargr...@lbl.gov Future Technologies Group Computer and Data Sciences Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
