| Tom, This is because the code in OpenMPI presumes macros will be expanded in pragmas, but that is not required by the C standard. (See my e-mails below from last year with PGI, TPR 17186.) I fixed OpenMPI 1.4.3 configure in the attached patch. My patch also disables inline assembly for PGI C++, the same as for PGI C. (Something similar may also have to be done to solve Eugene's asm statement warnings on Solaris 11.) It also fixes detection of support for marshaling Fortran REAL16 and COMPLEX32 data types. On 15 Nov 2011, at 12:49 PM, Thomas Rothrock CTR SMDC SimCtr/GaN Corporation wrote:
Larry Baker wrote: Dave, I too read the C99 standard and found that macro substitution is not required in pragmas. I complained to the OpenMPI folks that they are relying a non-standard feature. The reason I brought this to your attention is to point out that pgcc and pgCC behave differently (puzzling), neither one describes their behavior, and ident is not documented as a recognized pragma. Please make sure the documentation is updated to describe whatever the behavior is for pgcc and pgCC. Thanks, Larry Baker US Geological Survey 650-329-5608 ba...@usgs.gov Larry, Thank you. I have added your remarks to the FTO, and included documentation into its resolution. dave On Oct 7, 2010, at 10:46 AM, PGI Technical Support wrote: Larry, An update to TPR 17186. ========================================================= For c99, it is not required to perform macro replacement in pragmas. However, there are a few exceptions in pgc, such as within 'omp', 'pgi' & 'acc' pragmas. c99 does define a method which effects replacement within pragmas; the method uses the _Pragma operator; e.g., #define FOO "foo" #define IDENT(x) _Pragma("ident") x IDENT(FOO) will generate #pragma ident "foo" We will add allowing macro replacement within '#pragma ident' in our 11.0 release. ========================================================== regards, dave PGI Technical Support wrote: TPR 17186. thanks again, dave Larry Baker wrote: Customer information: Larry Baker US Geological Survey 650-329-5608 ba...@usgs.gov Product: 2183-WS PIN: 507549 Problem description: pgcc issues the warning Pragma ignored – string expected after #pragma ident when compiling openmpi-1.4.2 from http://www.open-mpi.org. The source of this problem is that OpenMPI #defines the string it wants to use in a #pragma ident instead of using a literal string value. However, pgcc does not perform macro substitution on #pragma ident statements. Curiously, pgCC does! This is not documented anywhere. Also, #pragma ident is not listed as a recognized pragma, even though it seems to be properly compiled into the ELF object file. It would be consistent with gcc and pgCC if pgcc would perform macro substitution in pragmas. Larry Baker US Geological Survey 650-329-5608 ba...@usgs.gov -- Dave Borer Customer Service Manager, The Portland Group email dave.bo...@st.com phone (503)-431-7113 -- Dave Borer Customer Service Manager, The Portland Group email dave.bo...@st.com phone (503)-431-7113 |
configure.patch
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