Edit the user.cfg file to alter the settings of various
variables which are used to tailor the build process.
Each of the variables set in user.cfg may be modified
as described below:
INSTALL_POINT
is the location where you wish the GNU C/C++ cross compilation tools for
RTEMS to be built. It is recommended that the directory chosen to receive
these tools be named so that it is clear from which gcc distribution it
was generated and for which target system the tools are to produce code for.
WARNING: The INSTALL_POINT should not be a subdirectory
under the build directory. The build directory will be removed
automatically upon successful completion of the build procedure.
BINUTILS
is the directory under tools that contains binutils-2.10.
For example:
BINUTILS=binutils-2.10
GCC
is the directory under tools that contains gcc-2.8.1.
For example,
GCC=gcc-2.8.1
Note that the gnat version is not needed because the gnat source
is built as part of building gcc.
NEWLIB
is the directory under tools that contains newlib-1.8.2.
For example:
NEWLIB=newlib-1.8.2
BUILD_DOCS
is set to "yes" if you want to install documentation. This requires
that tools supporting documentation production be installed. This
currently is limited to the GNU texinfo package.
For example:
BUILD_DOCS=yes
BUILD_OTHER_LANGUAGES
is set to "yes" if you want to build languages other than C and C++. At
the current time, the set of alternative languages includes Java, Fortran,
and Objective-C. These alternative languages do not always build cross.
Hence this option defaults to "no".
For example:
BUILD_OTHER_LANGUAGES=yes
NOTE: Based upon the version of the compiler being used, it may not
be possible to build languages other than C and C++ cross. In many cases,
the language run-time support libraries are not "multilib'ed". Thus the
executable code in these libraries will be for the default compiler settings
and not necessarily be correct for your CPU model.
RTEMS
is the directory under tools that contails rtems-DATE.
ENABLE_RTEMS_POSIX
is set to "yes" if you want to enable the RTEMS POSIX API support.
This corresponds to the
configure option --enable-posix.
This must be enabled to support the GNAT/RTEMS run-time.
ENABLE_RTEMS_ITRON
is set to "yes" if you want to enable the RTEMS ITRON API support.
This corresponds to the
configure option --enable-itron.
ENABLE_RTEMS_MP
is set to "yes" if you want to enable the RTEMS multiprocessing
support. This feature is not supported by all RTEMS BSPs and
is automatically forced to "no" for those BSPs. This corresponds to the
configure option --enable-multiprocessing.
ENABLE_RTEMS_CXX
is set to "yes" if you want to build the RTEMS C++ support including
the C++ Wrapper for the Classic API. This corresponds to the
configure option --enable-cxx.
ENABLE_RTEMS_TESTS
is set to "yes" if you want to build the RTEMS Test Suite. If this
is set to "no", then only the Sample Tests will be built. Setting
this option to "yes" significantly increases the amount of disk
space required to build RTEMS.
This corresponds to the configure option --enable-tests.
ENABLE_RTEMS_TCPIP
is set to "yes" if you want to build the RTEMS TCP/IP Stack. If a
particular BSP does not support TCP/IP, then this feature is automatically
disabled. This corresponds to the configure option
--enable-tcpip.
ENABLE_RTEMS_NONDEBUG
is set to "yes" if you want to build RTEMS in a fully optimized
state. This corresponds to executing make after configuring
the source tree.
ENABLE_RTEMS_DEBUG
is set to "yes" if you want to build RTEMS in a debug version.
When built for debug, RTEMS will include run-time code to
perform consistency checks such as heap consistency checks.
Although the precise compilation arguments are BSP dependent,
the debug version of RTEMS is usually built at a lower optimization
level. This is usually done to reduce inlining which can make
tracing code execution difficult. This corresponds to executing
make VARIANT=debug after configuring
the source tree.
INSTALL_RTEMS
is set to "yes" if you want to install RTEMS after building it.
This corresponds to executing make install after configuring
and building the source tree.
ENABLE_RTEMS_MAINTAINER_MODE
is set to "yes" if you want to enabled maintainer mode functionality
in the RTEMS Makefile. This is disabled by default and it is not
expected that most users will want to enable this. When this option
is enabled, the build process may attempt to regenerate files that
require tools not required when this option is disabled.
This corresponds to the configure option
--enable-maintainer-mode.
Getting Started with GNAT/RTEMS