sco5.h: Make ELF default file format and add -mcoff/-melf..

        * i386/sco5.h: Make ELF default file format and add -mcoff/-melf..
        (MULTILIB_DEFAULTS): Define.
        (ASM_SPEC, CPP_SPEC): Handle -mcoff.
        (STARTFILE_SPEC, ENDFILE_SPEC, LINK_SPEC): Likewise.
        (LIBGCC_SPEC): Likewise.
        (MASK_COFF, TARGET_COFF, TARGET_ELF): Define.
        (SUBTARGET_SWITCHES): Add -mcoff and -melf.
        * i386/t-sco5 (CRTSTUFF_T_CFLAGS): Add -fPIC.
        (CRTSTUFF_T_CFLAGS_S): Tweak for COFF.
        (EXTRA_PARTS, TAROUTOPTS): Delete.
        (libgcc1-elf, libgcc2-elf, libgcc-elf targets): Delete.
        (MULTILIB_OPTIONS): Define.
        (MULTILIB_DIRNAMES, MULTILIB_EXCEPTIONS): Likewise.
        (MULTILIB_MATCHE, MULTILIB_EXTRA_OPTS): Likewise.
SCO Open Server patches.

From-SVN: r15627

gcc/ChangeLog

+Mon Sep 22 11:21:33 1997  J. Kean Johnston  <jkj@sco.com>
+
+	* i386/sco5.h: Make ELF default file format and add -mcoff/-melf..
+	(MULTILIB_DEFAULTS): Define.
+	(ASM_SPEC, CPP_SPEC): Handle -mcoff.
+	(STARTFILE_SPEC, ENDFILE_SPEC, LINK_SPEC): Likewise.
+	(LIBGCC_SPEC): Likewise.
+	(MASK_COFF, TARGET_COFF, TARGET_ELF): Define.
+	(SUBTARGET_SWITCHES): Add -mcoff and -melf.
+	* i386/t-sco5 (CRTSTUFF_T_CFLAGS): Add -fPIC.
+	(CRTSTUFF_T_CFLAGS_S): Tweak for COFF.
+	(EXTRA_PARTS, TAROUTOPTS): Delete.
+	(libgcc1-elf, libgcc2-elf, libgcc-elf targets): Delete.
+	(MULTILIB_OPTIONS): Define.
+	(MULTILIB_DIRNAMES, MULTILIB_EXCEPTIONS): Likewise.
+	(MULTILIB_MATCHE, MULTILIB_EXTRA_OPTS): Likewise.
+
 Mon Sep 22 02:10:43 1997  Jeffrey A Law  (law@cygnus.com)
 
 	* version.c: Bump for snapshot.

gcc/config/i386/sco5.h

@@ -737,6 +737,12 @@ dtors_section ()							\
 #define WCHAR_TYPE		"long int"
 #define WCHAR_TYPE_SIZE		BITS_PER_WORD
 
+/*
+ * New for multilib support. Set the default switches for multilib,
+ * which is -melf.
+ */
+#define MULTILIB_DEFAULTS { "melf" }
+
 
 /* Please note that these specs may look messy but they are required in
    order to emulate the SCO Development system as closely as possible.
@@ -759,20 +765,20 @@ dtors_section ()							\
    does.
 
    SCO also allows you to compile, link and generate either ELF or COFF
-   binaries. With gcc, as with the SCO compiler, the default is coff.
-   Specify -melf to gcc to produce elf binaries. -fpic will get the
+   binaries. With gcc, unlike the SCO compiler, the default is ELF.
+   Specify -mcoff to gcc to produce elf binaries. -fpic will get the
    assembler and linker to produce PIC code.
 */
 
 /* Set up assembler flags for PIC and ELF compilations */
 #undef ASM_SPEC
 #define ASM_SPEC \
- "-b %{melf:elf}%{!melf:coff \
-   %{static:%e-static only valid with -melf} \
-   %{shared:%e-shared only valid with -melf} \
-   %{symbolic:%e-symbolic only valid with -melf}} \
+ "-b %{!mcoff:elf}%{mcoff:coff \
+   %{static:%e-static not valid with -mcoff} \
+   %{shared:%e-shared not valid with -mcoff} \
+   %{symbolic:%e-symbolic not valid with -mcoff}} \
   %{Ym,*} %{Yd,*} %{Wa,*:%*} \
-  %{melf:-E%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},ELF %{Qn:} %{!Qy:-Qn}}"
+  %{!mcoff:-E%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},ELF %{Qn:} %{!Qy:-Qn}}"
 
 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
 
@@ -790,13 +796,13 @@ dtors_section ()							\
        %{!Xc:%{Xk:values-Xk.o%s} \
         %{!Xk:%{Xt:values-Xt.o%s} \
          %{!Xt:values-Xa.o%s}}}}}} \
-  %{!melf:crtbegin.o%s} \
-  %{melf:%{static:crtbegin.o%s}%{!static:crtbeginS.o%s}}"
+  %{mcoff:crtbeginS.o%s} \
+  %{!mcoff:%{!static:crtbegin.o%s}%{static:crtbeginS.o%s}}"
 
 #undef ENDFILE_SPEC
 #define ENDFILE_SPEC \
- "%{melf:%{!static:crtendS.o%s}%{static:crtend.o%s}} \
-  %{!melf:crtend.o%s} \
+ "%{!mcoff:%{!static:crtend.o%s}%{static:crtendS.o%s}} \
+  %{mcoff:crtendS.o%s} \
   %{pg:gcrtn.o%s}%{!pg:crtn.o%s}"
 
 #undef CPP_PREDEFINES
@@ -807,8 +813,8 @@ dtors_section ()							\
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %[cpp_cpu] \
-  %{fpic:%{!melf:%e-fpic is only valid with -melf}} \
-  %{fPIC:%{!melf:%e-fPIC is only valid with -melf}} \
+  %{fpic:%{mcoff:%e-fpic is not valid with -mcoff}} \
+  %{fPIC:%{mcoff:%e-fPIC is not valid with -mcoff}} \
   -D__i386 -D__unix -D_SCO_DS=1 -D_M_I386 -D_M_XENIX -D_M_UNIX \
   %{!Xods30:-D_STRICT_NAMES} \
   %{!ansi:%{!posix:%{!Xods30:-D_SCO_XPG_VERS=4}}} \
@@ -828,9 +834,9 @@ dtors_section ()							\
                       -DM_WORDSWAP}}}} \
   %{scointl:-DM_INTERNAT -D_M_INTERNAT} \
   %{traditional:-D_KR -D_SVID -D_NO_PROTOTYPE} \
-  %{melf:-D_SCO_ELF} \
-  %{!melf:-D_M_COFF -D_SCO_COFF} \
-  %{melf:%{fpic:-D__PIC__ -D__pic__} \
+  %{!mcoff:-D_SCO_ELF} \
+  %{mcoff:-D_M_COFF -D_SCO_COFF} \
+  %{!mcoff:%{fpic:-D__PIC__ -D__pic__} \
          %{fPIC:%{!fpic:-D__PIC__ -D__pic__}}} \
   %{Xa:-D_SCO_C_DIALECT=1} \
   %{!Xa:%{Xc:-D_SCO_C_DIALECT=3} \
@@ -841,19 +847,19 @@ dtors_section ()							\
 
 #undef LINK_SPEC
 #define LINK_SPEC \
- "-b %{melf:elf}%{!melf:coff \
-   %{static:%e-static only valid with -melf} \
-   %{shared:%e-shared only valid with -melf} \
-   %{symbolic:%e-symbolic only valid with -melf} \
-   %{fpic:%e-fpic only valid with -melf} \
-   %{fPIC:%e-fPIC only valid with -melf}} \
-  -R%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},%{melf:ELF}%{!melf:COFF} \
+ "-b %{!mcoff:elf}%{mcoff:coff \
+   %{static:%e-static not valid with -mcoff} \
+   %{shared:%e-shared not valid with -mcoff} \
+   %{symbolic:%e-symbolic not valid with -mcoff} \
+   %{fpic:%e-fpic not valid with -mcoff} \
+   %{fPIC:%e-fPIC not valid with -mcoff}} \
+  -R%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},%{mcoff:COFF}%{!mcoff:ELF} \
   %{Wl,*%*} %{YP,*} %{YL,*} %{YU,*} \
   %{!YP,*:%{p:-YP,/usr/ccs/libp:/lib/libp:/usr/lib/libp:/usr/ccs/lib:/lib:/usr/lib} \
    %{!p:-YP,/usr/ccs/lib:/lib:/usr/lib}} \
   %{h*} %{static:-dn -Bstatic} %{shared:-G -dy %{!z*:-z text}} \
   %{symbolic:-Bsymbolic -G -dy %{!z*:-z text}} %{z*} %{R*} %{Y*} \
-  %{G:-G} %{melf:%{Qn:} %{!Qy:-Qn}}"
+  %{G:-G} %{!mcoff:%{Qn:} %{!Qy:-Qn}}"
 
 /* The SCO COFF linker gets confused on the difference between "-ofoo"
    and "-o foo".   So we just always force a single space. */
@@ -867,15 +873,14 @@ dtors_section ()							\
 #define LIB_SPEC \
  "%{!shared:%{!symbolic:-lcrypt -lgen -lc}}"
 
-#undef LIBGCC_SPEC
-#define LIBGCC_SPEC \
- "%{!melf:-lgcc}%{melf:%{!shared:%{!symbolic:-lgcc-elf}}}"
-
-#define MASK_ELF     		010000000000	/* Mask for elf generation */
-#define TARGET_ELF              (target_flags & MASK_ELF)
+#define MASK_COFF     		010000000000	/* Mask for elf generation */
+#define TARGET_COFF             (target_flags & MASK_COFF)
+#define TARGET_ELF              (!(target_flags & MASK_COFF))
 
 #undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES { "elf", MASK_ELF },
+#define SUBTARGET_SWITCHES 		\
+	{ "coff", MASK_COFF }, 		\
+	{ "elf", -MASK_COFF },
 
 #define NO_DOLLAR_IN_LABEL
 

gcc/config/i386/t-sco5

 # The pushl in CTOR initialization interferes with frame pointer elimination.
-CRTSTUFF_T_CFLAGS =-fno-omit-frame-pointer
-CRTSTUFF_T_CFLAGS_S = $(CRTSTUFF_T_CFLAGS) -melf -fPIC 
+CRTSTUFF_T_CFLAGS   = -fPIC -fno-omit-frame-pointer
+CRTSTUFF_T_CFLAGS_S = -mcoff -fno-omit-frame-pointer
 
 #
-# Becuase we can be compiling for either elf or coff, we need to create
-# special versions of libgcc.a. It IS possible for this not to be done
-# and let the SCO linker transform the coff objects (which are created
-# by default) into elf objects. However, this is inefficient. So,
-# we create a libgcc-elf.a, which is used in the specs in sco5.h.
-# These are the rules for doing that.
+# I am still a little unsure of the multilib architecture. The following
+# 4 lines are based on advice from meissner@cygnus.com.
 #
-# NOTE: This is duplicated directly from Makefile.in. If you change it
-# there, be sure to change things here!
-#
-EXTRA_PARTS = libgcc-elf.a crtbegin.o crtend.o crtbeginS.o crtendS.o
-TAROUTOPTS = xpf
-
-libgcc1-elf.a: stamp-crtS libgcc1.c $(CONFIG_H) $(LIB1FUNCS_EXTRA) config.status
-	-rm -f tmplibgcc1-elf.a
-	for name in $(LIB1FUNCS); \
-	do \
-	  echo $${name}; \
-	  rm -f $${name}$(objext); \
-	  $(OLDCC) -DIN_LIBGCC1 -dy $(CCLIBFLAGS) $(INCLUDES) -c -DL$${name} $(srcdir)/libgcc1.c; \
-	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
-	  mv libgcc1$(objext) $${name}$(objext); \
-	  $(OLDAR) $(OLDAR_FLAGS) tmplibgcc1-elf.a $${name}$(objext); \
-	  rm -f $${name}$(objext); \
-	done
-	for file in .. $(LIB1FUNCS_EXTRA); \
-	do \
-	  if [ x$${file} != x.. ]; then \
-	    name=`echo $${file} | sed -e 's/[.][cS]$$//' -e 's/[.]asm$$//'`; \
-	    echo $${name}; \
-	    if [ $${name}.asm = $${file} ]; then \
-	      cp $${file} $${name}.s || exit 1; file=$${name}.s; \
-	    else true; fi; \
-	    $(OLDCC) -DIN_LIBGCC1 -dy $(CCLIBFLAGS) $(INCLUDES) -c $${file}; \
-	    if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
-	    $(OLDAR) $(OLDAR_FLAGS) tmplibgcc1-elf.a $${name}$(objext); \
-	    if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
-	    rm -f $${name}.s $${name}$(objext); \
-	  else true; \
-	  fi; \
-	done
-	-if $(RANLIB_TEST) ; then $(RANLIB) tmplibgcc1-elf.a; else true; fi
-	mv tmplibgcc1-elf.a libgcc1-elf.a
-
-libgcc2-elf.a: stamp-crtS libgcc2.c libgcc2.ready $(CONFIG_H) $(LIB2FUNCS_EXTRA) \
-   machmode.h longlong.h gbl-ctors.h config.status
-	-rm -f tmplibgcc2-elf.a
-	for name in $(LIB2FUNCS); \
-	do \
-	  echo $${name}; \
-	  $(GCC_FOR_TARGET) -melf $(LIBGCC2_CFLAGS) $(INCLUDES) -c -DL$${name} \
-	      $(srcdir)/libgcc2.c -o $${name}$(objext); \
-	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
-	  $(AR) $(AR_FLAGS) tmplibgcc2-elf.a $${name}$(objext); \
-	  rm -f $${name}$(objext); \
-	done
-	for file in .. $(LIB2FUNCS_EXTRA); \
-	do \
-	  if [ x$${file} != x.. ]; then \
-	    name=`echo $${file} | sed -e 's/[.][cS]$$//' -e 's/[.]asm$$//'`; \
-	    oname=` echo $${name} | sed -e 's,.*/,,'`; \
-	    echo $${name}; \
-	    if [ $${name}.asm = $${file} ]; then \
-	      cp $${file} $${name}.s || exit 1; file=$${name}.s; \
-	    else true; fi; \
-	    $(GCC_FOR_TARGET) -melf $(LIBGCC2_CFLAGS) $(INCLUDES) -c $${file}; \
-	    if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
-	    $(AR) $(AR_FLAGS) tmplibgcc2-elf.a $${oname}$(objext); \
-	    rm -f $${name}.s $${oname}$(objext); \
-	  else true; \
-	  fi; \
-	done
-	mv tmplibgcc2-elf.a libgcc2-elf.a
-
-# Combine the various libraries into a single library, libgcc.a.
-libgcc-elf.a: libgcc1-elf.a libgcc2-elf.a
-	-rm -rf tmplibgcc-elf.a libgcc-elf.a tmpcopy
-	mkdir tmpcopy
-	-(cd tmpcopy; $(AR) x ../libgcc1-elf.a)
-	-(cd tmpcopy; chmod +w * > /dev/null 2>&1)
-	-(cd tmpcopy; $(AR) x ../libgcc2-elf.a)
-	(cd tmpcopy; $(AR) $(AR_FLAGS) ../tmplibgcc-elf.a *$(objext))
-	rm -rf tmpcopy
-	-if $(RANLIB_TEST) ; then $(RANLIB) tmplibgcc-elf.a; else true; fi
-	mv tmplibgcc-elf.a libgcc-elf.a
+MULTILIB_OPTIONS    = mcoff/fPIC
+MULTILIB_DIRNAMES   = coff pic
+MULTILIB_EXCEPTIONS = *mcoff*/*fPIC*
+MULTILIB_MATCHES    = fPIC=fpic
+MULTILIB_EXTRA_OPTS =
 
+LIBGCC=stmp-multilib
+INSTALL_LIBGCC=install-multilib