source: rtems/c/src/exec/score/cpu/a29k/rtems/score/Makefile.am @ 955a9ba7

4.104.114.84.95
Last change on this file since 955a9ba7 was 955a9ba7, checked in by Joel Sherrill <joel.sherrill@…>, on 12/01/99 at 15:05:26

Patch rtems-rc-19991123-rc-2.diff from Ralf Corsepius
<corsepiu@…> 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.
  • Property mode set to 100644
File size: 484 bytes
Line 
1##
2## $Id$
3##
4
5AUTOMAKE_OPTIONS = foreign 1.4
6
7H_FILES = a29k.h a29ktypes.h cpu.h cpu_asm.h
8noinst_HEADERS = $(H_FILES)
9
10#
11# (OPTIONAL) Add local stuff here using +=
12#
13
14PREINSTALL_FILES = \
15$(PROJECT_INCLUDE)/rtems/score \
16$(H_FILES:%.h=$(PROJECT_INCLUDE)/rtems/score/%.h)
17
18$(PROJECT_INCLUDE)/rtems/score:
19        $(mkinstalldirs) $@
20
21$(PROJECT_INCLUDE)/rtems/score/%.h: %.h
22        $(INSTALL_DATA) $< $@
23
24all-local: $(PREINSTALL_FILES)
25
26include $(top_srcdir)/../../../../../../automake/local.am
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