Omni OpenMP C Compiler

NAME

ompcc - RWC Omni OpenMP C compiler (ver 1.1)

SYNOPSIS

       ompcc [options] filename ...

NOTE: This command, ompcc is obsolete!!! This command is an alias of "omcc". Please refer to omcc man page.

DESCRIPTION

ompcc is a program to compile OpenMP programs written in C. ompcc processes input files through one or more of four stages: preprocessing, compilation, assembly, and linking. This man page contains descriptions for only ompcc-specific aspects of the compiler, though it also contains summaries of some general-purpose options. For a fuller explanation of the compile options, see options of the backend compiler which is specified in the installation. C source files use the suffix '.c'.

-c

Compile or assemble the source files, but do not link. The compiler output is an object file corresponding to each source file.

-Dmacro

Define macro macro with the string `1' as its definition.

-Dmacro=defn

Define macro macro as defn.

-g

Produce debugging information.

-Idir

Append directory dir to the list of directories searched for include files.

-Ldir

Add directory dir to the list of directories to be searched for `-l'.

-llibrary

Use the library named library when linking.

-O

Optimize.

-o file

Place output in file.

-S

Stop after the stage of compilation proper; do not assemble. The output is an assembler code file for each non-assembler input file specified.

-Umacro

Undefine macro macro.

-x

Stop after parsing leaving the intermediate file.

-X

Stop before calling the backend compiler. Leave the intermediate C file after OpenMP transformation.

-t

Leave intermediate file "tmp.x", "tmp.xx", "tmp.c".

-v

Verbose mode. Echo the executed commands.

-omp

Ignore OpenMP pragma.

-h, -help

Print Help.

ENVIRONMENT VARIABLES

In addition to OpenMP standard environment variables Omni environment variables controls the parallel execution. See Omni Environment Variables .

FILES

• bin/ompcc -- shell command to start off the compiler
• lib/openmp/libexec/C-front -- C front end
• lib/openmp/java/exc.jar -- Java exc toolkit jar file
• lib/openmp/template/ompc.tmpl -- template file for exc toolkit driver
• lib/openmp/lib/libompc.a -- Omni OpenMP runtime library
• lib/openmp/lib/libtlog.a -- Omni OpenMP profile library
• lib/openmp/lib/ompc_main.o -- Omni OpenMP start off routine
• lib/openmp/lib/include/omp.h -- OpenMP standard include file
• lib/openmp/lib/include/tlog.h -- Omni OpenMP profile header file
• lib/openmp/lib/include/stdarg.h -- stdarg.h for Omni OpenMP

Unsupported Features and Known BUGS

• Dynamic adjustment of the number of threads is not supported.
• Nested parallelism is partially supported. As long as idle threads are available, the threads are used to execute nested parallel regions.
• The threadprivate variables of non-master threads is not initialized properly. Use "copyin" clause to initialize them explicitly.
• The semantics for const-qualified variables in OpenMP is not fully implemented.
• "#file ..." directives are not recognized.