компоновщик GNU (The GNU linker)
Окружение (Environment)
You can change the behaviour of ld with the environment variables
"GNUTARGET", "LDEMULATION" and "COLLECT_NO_DEMANGLE".
"GNUTARGET" determines the input-file object format if you don't
use -b (or its synonym --format). Its value should be one of the
BFD names for an input format. If there is no "GNUTARGET" in the
environment, ld uses the natural format of the target. If
"GNUTARGET" is set to "default" then BFD attempts to discover the
input format by examining binary input files; this method often
succeeds, but there are potential ambiguities, since there is no
method of ensuring that the magic number used to specify object-
file formats is unique. However, the configuration procedure for
BFD on each system places the conventional format for that system
first in the search-list, so ambiguities are resolved in favor of
convention.
"LDEMULATION" determines the default emulation if you don't use
the -m option. The emulation can affect various aspects of
linker behaviour, particularly the default linker script. You
can list the available emulations with the --verbose or -V
options. If the -m option is not used, and the "LDEMULATION"
environment variable is not defined, the default emulation
depends upon how the linker was configured.
Normally, the linker will default to demangling symbols.
However, if "COLLECT_NO_DEMANGLE" is set in the environment, then
it will default to not demangling symbols. This environment
variable is used in a similar fashion by the "gcc" linker wrapper
program. The default may be overridden by the --demangle and
--no-demangle options.
