05-08-2013
Some would argue the heap is only things malloc()'d/new, and the other stuff is code pages, constants pages, preloaded initialized variables.
I have noticed environment at the end of core dumps, so exec() may use copy it to automatic storage before calling main. It'd be interesting to see if what you pass exec as environment can affect the core image.
Generally, executable stuff and control structures are at the bottom. The OS may want constants in separate pages marked read only, code in pages marked read/execute no write and of course the modifiable heap in read write no execute pages. The stack is growing down from the top, and the heap up from the bottom, and an mmap() may take out a hunk of address space.
Of course, with 64 bit CPUs, the addresses double in size, increasing reach and slowing execution. It's about time for someone to make a CPU with variable length addresses, like utf-8. Past CPUs have had variable length addressing to speed smaller bits of code needing only short relative reach.
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LEARN ABOUT DEBIAN
qd-config
QD-CONFIGG(1) QD-CONFIGG(1)
NAME
qd-config - determine flags for compilation and linking
SYNOPSIS
qd-config [options]
DESCRIPTION
To link a Fortran-90 program with the C++ qd library, it is recommended to link with the C++ compiler used to generate the library. The
Fortran 90 interface (along with a C-style main function calling f_main) is found in the qdmod library. The qd-config script can be used
to determine which flags to pass to compile and link your programs.
OPTIONS
--src Switch between source and system location.
--prefix
Output configured prefix value.
--exec-prefix
Output configured exec_prefix value.
--build-flags
Compiler options used during build.
--build-libs
Linker options used during build.
--configure-args
Configure arguments used for build.
--cxx C++ compiler.
--cflags
C++ preprocessor and compiler options.
--cxxflags
C++ compiler options.
--libs-la
C++ linker options and libtool archive location.
--libs C++ linker options.
--fc Fortran compiler.
--fcflags
Fortran compiler options.
--fclibs
Fortran linker options.
--fmainlib
C++ linker options for main program written in Fortran.
--version
Output version.
AUTHOR
This manual page was written by Daniel Leidert <daniel.leidert@wgdd.de> for the Debian project (but may be used by others).
User Commands 2008-05-11 QD-CONFIGG(1)