This changes adds support to build the autotools if the host installed
version is not a suitable version. Autoconf and automake have hard coded
references to the install prefix and host tools and this makes it impossible
to relocate, that is use in any path other than the install prefix. To
bootstrap automake you need to first build a suitable autoconf and with that
you can built automake for the install prefix. The other complication is
not referencing the install prefix in the path when building in the RSB.
Having the install prefix in the path can result in strange issues appearing
such as gcc using a new assembler feature not present in an older assember
installed under the install prefix.
The process is to build the autotools using an install prefix to an
internal path inside the RSB temporary path and to use that autoconf
to build the version for the install prefix. The internal install
prefix version is also used to bootstrap RTEMS.
Rework the RTEMS build set files to point to the new location.
Move the files into devel, this follows the ports naming in
FreeBSD.
Update the macros, defaults, and options to support this.
Fix paths that need to be coverted to host format.
The shell expansion needs to invoke a shell on Windows as cmd.exe
will not work.
Munch the paths into smaller sizes for Windows due to the limited
path size.
Added a check in the options post processing to check is the
prefix path allows writes. No actual write check is made. just
the permissions are checked. If the --no-install options is
used the check is not made.
Moved the --no-install option from the set builder to the options
module.
To support building snapshots and pre-release source the defaults
has been refactored. The defaults have been moved to a stand alone
file and a macros.py module added. This modile abstracts the
old default dictionary turning it into a class. The macros
class can load macros from a file therefore the defaults have
been moved to a stand alone file.
The use of defaults has been removed from the project. The only
case where it is used in the options where the defaults are read
from a file. Macros are used everywhere now.
The defaults.py has been moved to the option.py and the separate
options and defaults values has been moved to a new pattern. When
constructing an object that needs macros and options if the macros
passed in is None the defaults from the options are used. This makes
it clear when the defaults are being used or when a modified set of
macros is being used.
The macros class support maps. The default is 'global' and where all
the defaults reside and where configuratiion file changes end up.
Maps allow macros to be read from a file and override the values
being maintained in the 'global' map. Reading a macro first checks
the map and if not present checks the 'global' map.
The addition of maps to the macros provides the base to support
snapshots and pre-release testing with standard configurations.
This functionality needs to be added. It works by letting to
specify a snapshot with:
source0: none, override, 'my-dist.tar.bz2'
and it will be used rather the value from the standard configuration.
With a build set you need to also specify the package these macros
are for. The maps provide this.
