source: rtems/c/src/lib/ @ 5c3511e
Last change on this file since 5c3511e was 5c3511e, checked in by Joel Sherrill <joel.sherrill@…>, on 01/30/98 at 21:49:51

Big patch form Ralf Corsepius described in this email:

Here is the result of my nightly work to get RTEMS_ROOT=$srcdir working
with different shells and relative/absolute paths.

What I did is relatively simple in principle:
Instead of setting RTEMS_ROOT in and then let configure
substitute @RTEMS_ROOT@ inside the Makefiles, I now let each Makefile
set RTEMS_ROOT from each Makefile's @top_srcdir@ value.

The difference is subtile, but with enormous side effects:

  • If RTEMS_ROOT is set in configure, then the same single value will be propagated to all Makefiles. This breaks using relative paths, as the relative path to the root of the source tree is used inside of all subdirectory Makefiles.
  • Now each sets RTEMS_ROOT = @top_srcdir@. top_srcdir is computed individually by configure for each single, hereby receiving the correct value, no matter if relative or absolute paths are used.

To get this working, I needed to remove setting RTEMS_ROOT from, because this overrides the value of RTEMS_ROOT from each
individual Makefile.

Furthermore, I removed RTEMS_CUSTOM from the Makefiles and replaced all
"include $(RTEMS_CUSTOM)" directives with"include
$(RTEMS_ROOT)/make/custom/$(RTEMS_BSP)". Perhaps you don't like this,
but I think, to have one variable less is clearer and easier to
understand than having several variables refering to the next one.

I enclose a small patch to this mail, which

  • fixes the config.h problem (to finally clearify misunderstands)
  • removes assignment/subsitution of RTEMS_ROOT from
  • contains a workaround for the application Makefile's RTEMS_ROOT problem (reported by Eric)
  • removes some unused lines from the toplevel
  • removes assignment of RTEMS_ROOT from make/
  • Property mode set to 100644
File size: 664 bytes
2#  $Id$
6srcdir = @srcdir@
7VPATH = @srcdir@
8RTEMS_ROOT = @top_srcdir@
11include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
12include $(RTEMS_ROOT)/make/directory.cfg
14# We only build the KA9Q library if HAS_KA9Q was defined
15LIBKA9Q_yes_V = libka9q
18# We only build the rtems++ library if HAS_CPLUSPLUS was defined
19LIBRTEMSCPLUSPLUS_yes_V = librtems++
22# General Hardware API library
23LIBHWAPI=$(wildcard libhwapi)
25SUB_DIRS=start include libmisc libc libcpu libbsp \
Note: See TracBrowser for help on using the repository browser.