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Generic PGI Compiler Options
The following table lists and briefly describes the options alphabetically and includes a field showing the
category. For more details about the options as they relate to these categories, refer to “–M Options by
Category” on page 113.
Table 2.7. –M Options Summary
32
pgflag
Description
Category
allocatable=95|03
Controls whether to use Fortran 95 or Fortran 2003 Fortran Language
semantics in allocatable array assignments.
anno
Annotate the assembly code with source code.
Miscellaneous
[no]autoinline
C/C++ when a function is declared with the inline
keyword, inline it at –O2 and .
Inlining
[no]asmkeyword
Specifies whether the compiler allows the asm
keyword in C/C++ source files (pgcc and pgcpp
only).
C/C++ Language
[no]backslash
Determines how the backslash character is treated
in quoted strings (pgf77, pgf95, pgfortran only).
Fortran Language
[no]bounds
Specifies whether array bounds checking is enabled Miscellaneous
or disabled.
--[no_]builtin
Do/don’t compile with math subroutine builtin
Optimization
support, which causes selected math library routines
to be inlined (pgcc and pgcpp only).
byteswapio
Swap byte-order (big-endian to little-endian or vice Miscellaneous
versa) during I/O of Fortran unformatted data.
cache_align
Where possible, align data objects of size greater
Optimization
than or equal to 16 bytes on cache-line boundaries.
chkfpstk
Check for internal consistency of the x87 FP stack
in the prologue of a function and after returning
from a function or subroutine call (–tp px/p5/p6/
piii targets only).
Miscellaneous
chkptr
Check for NULL pointers (pgf95, pgfortran only).
Miscellaneous
chkstk
Check the stack for available space upon entry to
Miscellaneous
and before the start of a parallel region. Useful when
many private variables are declared.
concur
Enable auto-concurrentization of loops. Multiple
processors or cores will be used to execute
parallelizable loops.
Optimization
cpp
Run the PGI cpp-like preprocessor without
performing subsequent compilation steps.
Miscellaneous
cray
Force Cray Fortran (CF77) compatibility (pgf77,
pgf95, pgfortran only).
Optimization