[patch] rs6000: -msdata=none vs -G0

[DJ Delorie]

If you give gcc "-msdata=none" there should be no .sdata/.sbss
sections created.  However, only cc1 honors this option - the linker
can still put ".comm" objects in .sbss based on their size and the -G
setting.  So, if you give -msdata=none, tell the linker -G0 so that it
also does not create a .sbss section.

2001-10-26  DJ Delorie  <dj@redhat.com>

	* config/rs6000/sysv4.h (LINK_SPEC): Allow -msdata=none to
	override -G, and force -G0.

Index: config/rs6000/sysv4.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/sysv4.h,v
retrieving revision 1.64
diff -p -3 -r1.64 sysv4.h
*** sysv4.h	2001/10/22 14:43:30	1.64
--- sysv4.h	2001/10/26 18:56:00
*************** do {						\
*** 1019,1025 ****
  /* Override svr4.h definition.  */
  #undef	LINK_SPEC
  #define	LINK_SPEC "\
! %{h*} %{v:-V} %{G*} \
  %{YP,*} %{R*} \
  %{Qy:} %{!Qn:-Qy} \
  %(link_shlib) \
--- 1019,1025 ----
  /* Override svr4.h definition.  */
  #undef	LINK_SPEC
  #define	LINK_SPEC "\
! %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
  %{YP,*} %{R*} \
  %{Qy:} %{!Qn:-Qy} \
  %(link_shlib) \