| Commit message (Collapse) | Author | Age | Files | Lines |
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Include all cpukit/*/header.am files in cpukit/Makefile.am. This gets
rid of all subtree Makefile.am and the sudirs hack.
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Remove the CPU_PROVIDES_IDLE_THREAD_BODY option to avoid unnecessary
conditional compilation.
Close #3539.
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Add rtems_counter_frequency() API function. Use it to initialize the
counter value converter via the new system initialization step
(RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation
and the counter converter. It avoids an unnecessary pull in of the
64-bit integer division from libgcc.
Update #3456.
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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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The aim of this file is to encapsulate CPU port implementation details.
This helps to hide implementation details from <rtems.h> which
indirectly includes <rtems/score/cpu.h>.
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Use a ticket lock implementation based on atomic operations. Delete CPU
port specific SMP lock implementations.
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Add a CPU counter interface to allow access to a free-running counter.
It is useful to measure short time intervals. This can be used for
example to enable profiling of critical low-level functions.
Add two busy wait functions rtems_counter_delay_ticks() and
rtems_counter_delay_nanoseconds() implemented via the CPU counter.
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Move the SMP lock implementation to the CPU port. An optimal SMP lock
implementation is highly architecture dependent. For example the memory
models may be fundamentally different.
The new SMP lock API has a flaw. It does not provide the ability to use
a local context for acquire and release pairs. Such a context is
necessary to implement for example the Mellor-Crummey and Scott (MCS)
locks. The SMP lock is currently used in _Thread_Disable_dispatch() and
_Thread_Enable_dispatch() and makes them to a giant lock acquire and
release. Since these functions do not pass state information via a
local context there is currently no use case for such a feature.
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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See http://www.rtems.org/pipermail/rtems-devel/2012-May/001006.html
for details.
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* Makefile.am: Reformat.
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* Makefile.am: Split out preinstallation rules.
* preinstall.am: New (Split out from Makefile.am).
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PR 754/rtems
* rtems/asm.h: New (relocated from .).
* asm.h: Remove (moved to rtems/asm.h).
* Makefile.am: Reflect changes above.
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* Makefile.am: Eliminate CFLAGS_OPTIMIZE_V.
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* Makefile.am: Remove build-variant support.
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* configure.ac: Remove (Merged into$(top_srcdir)/configure.ac).
* Makefile.am: Don't include multilib.am.
Reflect merging configure.ac into $(top_srcdir)/configure.ac.
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* Makefile.am: Install asm.h to $(includedir)/rtems.
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* Makefile.am: Add PREINSTALL_DIRS.
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* Makefile.am: Re-add dirstamps to PREINSTALL_FILES.
Add PREINSTALL_FILES to CLEANFILES.
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* Makefile.am: Include compile.am, again.
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* Makefile.am: Convert to using automake compilation rules.
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* Makefile.am: Use mkdir_p. Remove dirs from PREINSTALL_FILES.
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* Makefile.am:Restore further parts having been lost.
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* Makefile.am: Restore file having been broken in last commit.
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* Makefile.am: Remove TMPINSTALL_FILES.
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* Makefile.am: Add $(dirstamp) to preinstallation rules.
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* Makefile.am: Don't use gmake rules for preinstallation.
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* configure.ac: Require autoconf-2.57 + automake-1.7.2.
* Makefile.am: Eliminate C_O_FILES, S_O_FILES, libscorecpu_a_OBJECTS.
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* Makefile.am: Build libscorecpu.a instead of rtems-cpu.rel.
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* Makefile.am: Use .$(OBJEXT) instead of .o.
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* rtems.c: Remove.
* Makefile.am: Reflect changes above.
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* Makefile.am: Include $(top_srcdir)/../../../automake/*.am.
Use ../../../aclocal.
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* Per PR94, all rtems/score/CPUtypes.h are named rtems/score/types.h.
* rtems/score/no_cputypes.h: Removed.
* rtems/score/types.h: New file via CVS magic.
* Makefile.am, rtems/score/cpu.h: Account for name change.
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* configure.ac:
AC_INIT(package,_RTEMS_VERSION,_RTEMS_BUGS).
AM_INIT_AUTOMAKE([no-define foreign 1.6]).
* Makefile.am: Remove AUTOMAKE_OPTIONS.
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* rtems/Makefile.am: Removed.
* rtems/score/Makefile.am: Removed.
* configure.ac: Reflect changes above.
* Makefile.am: Reflect changes above.
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* Makefile.am: Add multilib support.
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* rtems/score/Makefile.am: Use 'PREINSTALL_FILES ='.
* Makefile.am: Use 'PREINSTALL_FILES ='.
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* Makefile.am, rtems/score/Makefile.am:
Apply include_*HEADERS instead of H_FILES.
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* Makefile.am: Use ... instead of RTEMS_TOPdir in ACLOCAL_AMFLAGS.
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* Makefile.am: Switch to ACLOCAL_AMFLAGS = -I $(RTEMS_TOPdir)/aclocal.
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* Makefile.am: ACLOCAL_AMFLAGS= -I $(RTEMS_TOPdir)/macros.
Switch to GNU canonicalization.
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* Makefile.am: Include compile.am.
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Ralf Corsepius <corsepiu@faw.uni-ulm.de> that contain:
* Modifications, (minor) corrections, cleanups to most existing
Makefile.ams
* Adds automake support to all remaining BSPs which have not yet been
converted to automake.
* Makefile.am for all remaining wrapup/Makefile.ams
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<corsepiu@faw.uni-ulm.de> which implements automake support for some
score/cpu/<RTEMS_CPU> subdirectories and fixes a few minor configuration
bugs.
To apply:
rm -rf c/src/exec/score/cpu/a29k/wrap
rm -rf c/src/exec/score/cpu/hppa1.1/wrap
rm -rf c/src/exec/score/cpu/i386/wrap
rm -rf c/src/exec/score/cpu/mips64orion/wrap
rm -rf c/src/exec/score/cpu/no_cpu/wrap
patch -p1 < rtems-rc-19991123-rc-2.diff.gz
Notes:
* I don't see a possiblity to convert the powerpc subdirectory in its
current layout to automake the time being.
* Besides the fact that this subdirectory is not in single-tree building
layout, the actual showstopper is the ifeq $(RTEMS_CPU_MODEL),mpc750)
gmake-conditional in powerpc/Makefile.in, which automake (correctly)
refuses to handle.
* The problem is *not* specific to the powerpc. Other CPUs basically
have similar problems (SH:sh7032 vs sh7045, SPARC: erc32.h in
score/cpu/sparc), but have been lucky to get around real issues (cf.
configuration files below score/cpu/sh/).
* From a configuration focused POV this problem boils down to a
file/subdirectory selection problem:
ppc: 1 or others
sh: 1 out of 2
sparc: 1 out of 1
Automake's means to implement such behavior is using conditionals to be
evaluated at configuration-time. The old configuration scheme however
used make-time conditionals. The SH port was lucky to get around this
issue because it applies a selection from a limited set of possible
selections, the powerpc however applies a selection from an unlimited
set, based on data not being available at configuration time.
* Currently I only see two general solutions:
1) make RTEMS_CPU_MODEL available at configuration time, ie. replace
make-time configuration by configuration-time configuration
2) Perform the selection at build-time, i.e. always install all files,
but use #ifdef #else #endif in source files. This is what the m68k has
exploited at other locations inside of the source-tree.
=> This directory is the last one remaining not using automake below the
whole exec/ hierarchy.
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