gcc.info: Cross-Compiler Problems
Go forward to Interoperation
Go backward to Installation Problems
Go up to Trouble
Go to the top op gcc
Cross-Compiler Problems
You may run into problems with cross compilation on certain machines,
for several reasons.
* Cross compilation can run into trouble for certain machines because
some target machines' assemblers require floating point numbers to
be written as *integer* constants in certain contexts.
The compiler writes these integer constants by examining the
floating point value as an integer and printing that integer,
because this is simple to write and independent of the details of
the floating point representation. But this does not work if the
compiler is running on a different machine with an incompatible
floating point format, or even a different byte-ordering.
In addition, correct constant folding of floating point values
requires representing them in the target machine's format. (The C
standard does not quite require this, but in practice it is the
only way to win.)
It is now possible to overcome these problems by defining macros
such as `REAL_VALUE_TYPE'. But doing so is a substantial amount of
work for each target machine. *Note Cross-compilation::.
* At present, the program `mips-tfile' which adds debug support to
object files on MIPS systems does not work in a cross compile
environment.
Created Wed Sep 1 16:42:21 2004 on bee with info_to_html version 0.9.6.