source: rtems/c/src/lib/libbsp/powerpc/mpc8260ads/configure.ac @ 2d0bc83

5
Last change on this file since 2d0bc83 was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

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
order.

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

Update #3254.
  • Property mode set to 100644
File size: 2.6 KB
Line 
1## Process this file with autoconf to produce a configure script.
2
3AC_PREREQ([2.69])
4AC_INIT([rtems-c-src-lib-libbsp-powerpc-mpc8260ads],[_RTEMS_VERSION],[https://devel.rtems.org/newticket])
5AC_CONFIG_SRCDIR([make/custom/mpc8260ads.cfg])
6RTEMS_TOP(../../../../../..)
7RTEMS_SOURCE_TOP
8RTEMS_BUILD_TOP
9RTEMS_BSP_LINKCMDS
10
11RTEMS_CANONICAL_TARGET_CPU
12AM_INIT_AUTOMAKE([no-define nostdinc foreign 1.12.2])
13RTEMS_BSP_CONFIGURE
14
15RTEMS_PROG_CC_FOR_TARGET
16RTEMS_CANONICALIZE_TOOLS
17RTEMS_PROG_CCAS
18
19RTEMS_BSPOPTS_SET_DATA_CACHE_ENABLED([*],[])
20RTEMS_BSPOPTS_HELP_DATA_CACHE_ENABLED
21
22RTEMS_BSPOPTS_SET_INSTRUCTION_CACHE_ENABLED([*],[])
23RTEMS_BSPOPTS_HELP_INSTRUCTION_CACHE_ENABLED
24
25RTEMS_BSPOPTS_SET([UARTS_USE_TERMIOS],[*],[0])
26RTEMS_BSPOPTS_HELP([UARTS_USE_TERMIOS],
27[Define to 1 if you want termios support for every port.
28 Termios support is independent of the choice of UART I/O mode.])
29
30RTEMS_BSPOPTS_SET([CONSOLE_MINOR],[*],[SCC2_MINOR])
31RTEMS_BSPOPTS_HELP([CONSOLE_MINOR],
32[(BSP--console driver) Must be defined to be one of SMC1_MINOR,
33 SMC2_MINOR, SCC2_MINOR, SCC3_MINOR, or SCC4_MINOR.
34 Determines which device will be registered as /dev/console.])
35
36RTEMS_BSPOPTS_SET([UARTS_IO_MODE],[*],[0])
37RTEMS_BSPOPTS_HELP([UARTS_IO_MODE],
38[(BSP--console driver)
39 Define to 0 or 1 if you want polled I/O performed by RTEMS.
40 Define to 1 if you want interrupt-driven performed by RTEMS.
41 Define to 2 if you want polled I/O performed by EPPCBug.
42 There is no provision to have a mix of interrupt-driven and polled I/O
43 ports, except that the printk port may use a different mode from the
44 other ports. If this is done, do not open the printk port from an RTEMS
45 application. With EPPCBug 1.1, if mode 2 is selected, CONSOLE_MINOR
46 must be set to SMC1_MINOR. This is a deficiency of the firmware: it
47 does not perform serial I/O on any port other than its default debug
48 port, which must be SMC1.])
49
50RTEMS_BSPOPTS_SET([PRINTK_MINOR],[*],[SMC2_MINOR])
51RTEMS_BSPOPTS_HELP([PRINTK_MINOR],
52[(BSP--console driver)
53 Must be defined to be one of SMC1_MINOR, SMC2_MINOR, SCC2_MINOR,
54 SCC3_MINOR, or SCC4_MINOR. Determines which device is used for output
55 by printk(). If the port that printk() uses is also used for other
56 I/O (e.g. if  PRINTK_MINOR == \$CONSOLE_MINOR), then both ports should
57 use the same type of I/O, otherwise the drivers will likely conflict with
58 each other.])
59
60RTEMS_BSPOPTS_SET([DISPATCH_HANDLER_STAT],[*],[])
61RTEMS_BSPOPTS_HELP([DISPATCH_HANDLER_STAT],
62[used by irq/irq.c])
63
64RTEMS_CHECK_NETWORKING
65AM_CONDITIONAL(HAS_NETWORKING,test "$HAS_NETWORKING" = "yes")
66
67RTEMS_BSP_CLEANUP_OPTIONS
68
69# Explicitly list a Makefile here
70AC_CONFIG_FILES([Makefile])
71
72RTEMS_PPC_EXCEPTIONS
73
74AC_OUTPUT
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