source: rtems/c/src/lib/libbsp/powerpc/ @ 0b8a6d7

Last change on this file since 0b8a6d7 was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

Remove make preinstall

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

The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "" files.

Update #3254.

  • Property mode set to 100644
File size: 2.2 KB
1ACLOCAL_AMFLAGS = -I ../../../aclocal
3## Descend into the @RTEMS_BSP_FAMILY@ directory
6# FIXME: This does not work
7# DIST_SUBDIRS = @all_subdirs@ support/old_exception_processing \
8#    support/new_exception_processing
10# FIXME: Herein lies madness ;)
12## shared/include
13EXTRA_DIST = shared/include/nvram.h
15## shared/bootloader
16EXTRA_DIST += shared/bootloader/em86.c shared/bootloader/lib.c shared/bootloader/misc.c \
17    shared/bootloader/mm.c shared/bootloader/pci.c shared/bootloader/zlib.c
18EXTRA_DIST += shared/bootloader/bootldr.h shared/bootloader/zlib.h shared/bootloader/pci.h
19EXTRA_DIST += shared/bootloader/em86real.S shared/bootloader/exception.S \
20    shared/bootloader/head.S
21EXTRA_DIST += shared/bootloader/
23## shared/clock
24EXTRA_DIST += shared/clock/p_clock.c
26## shared/console
27EXTRA_DIST += shared/console/console.c shared/console/inch.c shared/console/polled_io.c \
28    shared/console/uart.c
29EXTRA_DIST += shared/console/console.inl
31## shared/flash
32EXTRA_DIST += shared/flash/flash.c shared/flash/flashPgm.h shared/flash/flashPgmPvt.h \
33        shared/flash/intelFlash.c shared/flash/spansionFlash.c
35## shared/motorola
36EXTRA_DIST += shared/motorola/motorola.c
37EXTRA_DIST += shared/motorola/vpd.c
38EXTRA_DIST += shared/motorola/vpd.h
40## shared/pci
41EXTRA_DIST += shared/pci/pci.c shared/pci/detect_raven_bridge.c shared/pci/pcifinddevice.c \
42        shared/pci/generic_clear_hberrs.c
44## shared/residual
45EXTRA_DIST += shared/residual/residual.c
47## shared/openpic
48EXTRA_DIST += shared/openpic/openpic.c
50## shared/irq
51EXTRA_DIST += shared/irq/i8259.c shared/irq/irq_init.c
52EXTRA_DIST += shared/irq/openpic_i8259_irq.c
54## shared/start
55EXTRA_DIST += shared/start/start.S shared/start/rtems_crti.S \
56        shared/start/preload.S
58## shared/startup
59EXTRA_DIST += shared/startup/bspstart.c shared/startup/pgtbl_setup.c \
60    shared/startup/pgtbl_activate.c shared/startup/linkcmds \
61        shared/startup/zerobss.c shared/startup/bsppredriverhook.c
63## shared/tod
64EXTRA_DIST += shared/tod/todcfg.c
66## shared/vme
67EXTRA_DIST += shared/vme/vmeconfig.c \
68        shared/vme/README shared/vme/vme_universe.c
70include $(top_srcdir)/../../../automake/
71include $(top_srcdir)/../../../automake/
72include $(srcdir)/../../../../../bsps/powerpc/
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