Committed, libgloss/cris/Makefile.in: copy built files to newlib for libgfortran failure

[Hans-Peter Nilsson]

(CC to fortran@gcc.gnu.org as a FYI; you may see related PR:s.)

This patch unbreaks build of libgfortran for cris-axis-elf.  The
problem is described in the comment below.  An IMHO better,
long-term-fix, would be to have a mechanism that enables each library
to add a -B option to the top-level target gcc invocation.  And of
course, libraries that don't use link tests.  (Perhaps each library
could put one in a file in its subdir, named target-gcc-options, and
toplevel would do find with cat on subdirs in order of dependency.)

Before, you got:
checking whether  /home/hp/builds2/crisf/gcc/gfortran -B/home/hp/builds2/crisf/gcc/ -nostdinc -B/home/hp/builds2/crisf/cris-elf/n\
ewlib/ -isystem /home/hp/builds2/crisf/cris-elf/newlib/targ-include -isystem /home/hp/cvs_areas/combined/cvs_write/newlib/libc/in\
clude -B/home/hp/work/axis/build/cris-elf-prefix/cris-elf/bin/ -B/home/hp/work/axis/build/cris-elf-prefix/cris-elf/lib/ -isystem \
/home/hp/work/axis/build/cris-elf-prefix/cris-elf/include -isystem /home/hp/work/axis/build/cris-elf-prefix/cris-elf/sys-include \
-L/home/hp/builds2/crisf/ld accepts -g... yes
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking for _LARGE_FILES value needed for large files... no
checking for off_t... yes
checking for ANSI C header files... no
checking stdlib.h usability... yes
checking stdlib.h presence... no
configure: WARNING: stdlib.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: stdlib.h: proceeding with the compiler's result
checking for stdlib.h... yes
checking stdio.h usability... yes
checking stdio.h presence... no
configure: WARNING: stdio.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: stdio.h: proceeding with the compiler's result
checking for stdio.h... yes
(repeats of the last few lines for different header files, then:)
checking for complex.h... no
checking for struct stat.st_blksize... yes
checking for struct stat.st_blocks... yes
checking for struct stat.st_rdev... yes
checking for csin in -lm... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
make: *** [configure-target-libgfortran] Error 1

Now, build including libgfortran succeeds.  I don't get the strange
warnings either anymore; I don't know what strange side-effect-path
caused them to appear.

libgloss:
	* cris/Makefile.in (ALL_INSTALL_FILES): New macro.
	(ALL_INSTALL_FILES_NEWLIB_COPY): New macro.
	(all): Use ALL_INSTALL_FILES instead of its contents.  Add
	ALL_INSTALL_FILES_NEWLIB_COPY.
	($(objroot)/newlib/%, $(objroot)/newlib/libnosys.a): New rules

Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/libgloss/cris/Makefile.in,v
retrieving revision 1.1
diff -p -c -r1.1 Makefile.in
*** Makefile.in	27 Jan 2005 22:57:32 -0000	1.1
--- Makefile.in	1 Feb 2005 17:53:49 -0000
*************** BSP_SCRIPTS	=
*** 91,104 ****
  BSP_TEST	=
  BSP_INSTALL	= install-bsp
  
  # Host specific makefile fragment comes in here.
  @host_makefile_frag@
  
  # Need to augment the definition from host_makefile_frag above.
  INCLUDES += -I$(srcdir)
  
! all: ${SIM_CRT0} ${LIN_CRT0} ${BSP_CRT0} ${SIM_BSP} ${LIN_BSP} ${BSP_BSP} \
!  libnosys.a ${LIN_EXTRA}
  
  #
  # Here's where we build the board support packages for each target.
--- 91,111 ----
  BSP_TEST	=
  BSP_INSTALL	= install-bsp
  
+ ALL_INSTALL_FILES = \
+  ${SIM_CRT0} ${SIM_EXTRA} ${SIM_BSP} \
+  ${LIN_CRT0} ${LIN_EXTRA} ${LIN_BSP} \
+  ${BSP_CRT0} ${BSP_EXTRA} ${BSP_BSP}
+ 
+ ALL_INSTALL_FILES_NEWLIB_COPY = \
+  $(sort ${ALL_INSTALL_FILES:%=$(objroot)/newlib/%}) $(objroot)/newlib/libnosys.a
+ 
  # Host specific makefile fragment comes in here.
  @host_makefile_frag@
  
  # Need to augment the definition from host_makefile_frag above.
  INCLUDES += -I$(srcdir)
  
! all: ${ALL_INSTALL_FILES} ${ALL_INSTALL_FILES_NEWLIB_COPY} libnosys.a
  
  #
  # Here's where we build the board support packages for each target.
*************** ${LIN_BSP}: ${LIN_OBJS}
*** 122,127 ****
--- 129,150 ----
  libnosys.a:
  	ln -s ../libnosys/libnosys.a
  
+ # Toplevel build rules for various other libraries have gcc -B options
+ # applied so the newlib build directory is reached, but not the target
+ # libgloss directory (whose name is unknown to the toplevel configury
+ # anyway).  Configury tests that check for a successful link therefore
+ # fail; they can't find crt0.o and non-libc.a+libm.a libraries.  We copy
+ # over all files we would install to the neighboring newlib directory.
+ # Only the default crt0.o and libraries are needed, but we do them all for
+ # completeness.  They're however installed from here, not from the newlib
+ # build directory.
+ $(objroot)/newlib/%: %
+ 	cp -p $^ $@
+ 
+ # This rule, being more specific, overrides the pattern rule above.
+ $(objroot)/newlib/libnosys.a:
+ 	ln -s ../libgloss/libnosys/libnosys.a $(objroot)/newlib
+ 
  #
  # Build a test program for each target board. Just trying to get
  # it to link is a good test, so we ignore all the errors for now.

brgds, H-P