It appears that xlc's support for gcc-style inline asm does not allow an
empty clobbers list.
The failure I see is
libtool: compile: xlc -DHAVE_CONFIG_H -I.
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/asm
-I../../opal/include -I../../ompi/include -I../../oshmem/include
-I../../opal/mca/hwloc/hwloc1112/hwloc/include/private/autogen
-I../../opal/mca/hwloc/hwloc1112/hwloc/include/hwloc/autogen
-I../../ompi/mpiext/cuda/c
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2
-I../..
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/orte/include
-I../../orte/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/ompi/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/oshmem/include
-D_REENTRANT
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/mca/hwloc/hwloc1112/hwloc/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/BLD/opal/mca/hwloc/hwloc1112/hwloc/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/mca/event/libevent2022/libevent
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/mca/event/libevent2022/libevent/include
-I/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/BLD/opal/mca/event/libevent2022/libevent/include
-q64 -g -c
/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/asm/asm.c
-Wp,-qmakedep=gcc,-MF.deps/asm.TPlo -qpic -DPIC -o .libs/asm.o
"/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/include/opal/sys/powerpc/atomic.h",
line 150.27: 1506-276 (S) Syntax error: possible missing string literal?
"/home/hargrove/SCRATCH/OMPI/openmpi-2.0.0rc2-linux-ppc64-xlc-12.1/openmpi-2.0.0rc2/opal/include/opal/sys/powerpc/atomic.h",
line 239.27: 1506-276 (S) Syntax error: possible missing string literal?
make[2]: *** [asm.lo] Error 1
The code corresponding to the first error message is
143 static inline int32_t opal_atomic_ll_32 (volatile int32_t *addr)
144 {
145 int32_t ret;
146
147 __asm__ __volatile__ ("lwarx %0, 0, %1 \n\t"
148 : "=&r" (ret)
149 : "r" (addr)
150 :);
151 return ret;
152 }
And the second error is the identical line as it appears in
opal_atomic_ll_64().
The following patch to remove the "trailing" colons was sufficient to fix
this problem.
--- openmpi-2.0.0rc2/opal/include/opal/sys/powerpc/atomic.h~ 2016-05-02
23:37:13.597782000 +0000
+++ openmpi-2.0.0rc2/opal/include/opal/sys/powerpc/atomic.h 2016-05-02
23:36:11.615404378 +0000
@@ -147,7 +147,7 @@
__asm__ __volatile__ ("lwarx %0, 0, %1 \n\t"
: "=&r" (ret)
: "r" (addr)
- :);
+ );
return ret;
}
@@ -236,7 +236,7 @@
__asm__ __volatile__ ("ldarx %0, 0, %1 \n\t"
: "=&r" (ret)
: "r" (addr)
- :);
+ );
return ret;
}
-Paul
--
Paul H. Hargrove phhargr...@lbl.gov
Computer Languages & Systems Software (CLaSS) Group
Computer Science Department Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
