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Joel Sherrill
98100d275f
made no attempt to divide the comments up and place them with just
the appropriate files. Here is an excerpt from Ralf's email:
Changes including comments on changes I made after cycling through
all the targets:
* Added ranlib support. Now all targets use "ranlib" instead of "ar -s"
to build an index for a library. If ranlib isn't detected during
configuration, check if ar -s is working and try "ar -s" instead of
* Removed $(XXX_FOR_TARGET) from make/target.cfg.in, use $(XXX) instead now.
* gcc-target-default.cfg: LINK_XXXX-defines reworked to solve the -l
problem under posix (cf gcc-target-default.cfg)
* rtems-glom replaced by Makefile-rules inside of the wrapup/Makefile.in
that has been using rtems-glom until now.
* Removed CCC and friends in gcc-target-default.cfg, as they have been
breaking CXX support.
* Removed CONFIG.$(TARGET_ARCH).CC lines from several custom/*.cfg
files, because this is now set in custom/default.cfg.
* Added aclocal/ar-s.m4, check whether "ar -s" is working
* Added aclocal/cygwin.m4 and aclocal/exeext.m4.
* Reworked aclocal/canonicalize-tools.m4: Added ar -s check; fixes for
problems when XXX_FOR_TARGET is given via environment variables (didn't
work for gcc until now), adding cygwin check, improved autoconf-cache
handling.
* Removed -l from make rule dependencies. LINK_LIBS is now allowed to
contain -L and -l. LINK_OBJS and LINK_FILES must not contain -L or -l.
gcc28 make-exe rules now link using $(LINK_OBJS) $(LINK_LIBS) => Almost
all custom/*.cfg are modified. This is very likely to break something
because of typos or having missed to edit a file.
Open problems, known bugs, things I didn't do:
* custom/p4000.cfg seems to be out of date and requires to be reviewed.
(JRS NOTE: It is subordinate p4650 and p4600 -- both of which build ok
after minor changes.)
* custom/psim.cfg needs to be reviewed, I added some changes to it, I am
insecure about.
(JRS NOTE: psim had a minor problem endif/endef swapped but runs fine.)
* rtems-glom.in can now be removed.
* gcc*.cfg files "make depend" rules don't honor language specific flags
(e.g CXXFLAGS is ignored for *.cc) - Nothing to worry about now, but may
cause problems for hosts/targets not using gcc or rtems-add-ons that use
external packages.
* AFAIS, the no_bsp BSP can't be build anymore, i.e. configure refused
to configure for it whatever I tried.
* The toplevel and toplevel+1 README files are quite out-dated
* cygwin.m4 isn't of much use for rtems. In most cases (cf.
aclocal/*.m4) it is worked around by directly using $host_os. I think
I'll remove it soon after the next snapshot
* Before release the cygwin patch needs to be tested under cygwin. I may
have broken/missed something (esp. the sed-pattern to convert \\ into /
may be broken).
* You should try to build/run the posix-BSP under solaris - I don't
expect problems, but I am not 100% sure, esp. with regard to ranlib/ar -s.
* You should consider to convert all make/compilers/*.cfg files into
make/compilers/*.cfg.in files and let autoconf generate the *.cfg. This
may help getting rid of some if/then/else statements and help
hard-coding some defines into those files in future and shouldn't
disturb now.
* Not having installed libc.a/libm.a on a host may still break building
rtems, esp. when using -disable-gcc28 as the gcc27-configuration scheme
directly accesses libc.a and libm.a. The problem should not appear when
using gcc28 because it references libc/libm only through -lc and -lm
which may be static or dynamic (I didn't test this).
* shgen is not yet included (I didn't yet have enough time to integrate it).
* I know about a few more configure-probs (esp. cross-checking
--enable-* flags).
+ warn/refuse to configure when --enable-libcdir and
--enable-gcc28 are given.
+ force --enable-libcdir when --disable-gcc28 is given
* Replaced KSHELL with @KSH@ in some shell scripts generated by configure.in.
* Added a dependency to aclocal/*.m4 in the toplevel Makefile => configure
and aclocal.m4 will now be rebuild when any aclocal/*.m4 file is changed
* Some changes to aclocal/gcc-pipe.m4 and aclocal/gcc-specs.m4
* Replaced i[[3456]]86-unknown-freebsd2.[[12]] with i[[3456]]86-*freebsd2.*
in configure.in, as I suppose there might exist a variety of valid vendors
(2nd field of the name-tripple)
* Disabled override MAKEFLAGS in toplevel Makefile.in - Potential
side-effects are not really clear to me.
* In mvme162.cfg, $(LINK_LIBS) is missing in the CC line in gcc28's make-exe
rule (yet another one I missed to edit). Just append $(LINK_LIBS) to
the "CC" line, like I hopefully did to ALL other custom/*.cfg files.
* the problem with mvme162lx.cfg is a follow-up problem of the
mvme162.cfg-bug.
* mvme162/console and idp/console had variables named Buffer which
conflicted with similarly named variables in some tests.
73 lines
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73 lines
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#
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# $Id$
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#
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# OS-specific configuration
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#
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# Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de) 97/11/08
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#
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# Derived from rtems/c/make/os/*.cfg in previous RTEMS version.
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#
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RTEMS_HOST = @RTEMS_HOST@
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#
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# Stuff to clean and clobber for the OS
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#
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CLEAN_OS =
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CLOBBER_OS = *~ *.bak TAGS tags
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SHELL=/bin/sh
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ECHO=echo
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CAT=@CAT@
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RM=@RM@ -f
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CP=@CP@
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MV=@MV@
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LN=@LN@
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MKDIR=@MKDIR@
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CHMOD=@CHMOD@
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SED=@SED@
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M4=@M4@
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INSTALL=$(PROJECT_TOOLS)/install-if-change
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INSTALL_VARIANT=$(PROJECT_TOOLS)/install-if-change -V "$(LIB_VARIANT)"
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FGREP=@FGREP@
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GREP=@GREP@
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EGREP=@EGREP@
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# FIXME: HACK for a bug in cygwin-hosted egcs which returns a mixture
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# of '\\' and '/' as path separators.
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# Should be removed as soon as this bug is fixed in egcs.
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GCCSED = @GCCSED@
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# ksh (or bash) is used by some shell scripts; ref build-tools/scripts/Makefile
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#
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# Must have shell functions. Some ksh's core dump mysteriously and
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# unreliably on RTEMS shell scripts. bash appears to be the most
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# reliable but late model ksh's are usually OK.
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KSH=@KSH@
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#
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# RCS support
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#
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RCS_CLEAN=$(PROJECT_TOOLS)/rcs-clean
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#
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# Rule to install a shell script with the proper shell to run it.
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#
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# when debugging, one may want to save the previous incarnation of the
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# installed script. Replace the first line of this rule to do this.
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#
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# -$(RM) $@.old
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# -$(MV) $@ $@.old >/dev/null 2>&1
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define make-script
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-$(RM) $@
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$(SED) -e '1,1s?^#!KSHELL?#!$(KSH)?' \
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-e '1,1s?^#!SHELL?#!$(SHELL)?' < $< > $@
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$(CHMOD) 0555 $@
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endef
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