Add ld_list_options

This patch adds ld_list_options for ELF targets to avoid duplicated
outputs from ld --help.

	* Makefile.am (ELF_CLFAGS): New.
	(AM_CFLAGS): Add $(ELF_CLFAGS).
	* configure.ac (elf_list_options): New.  AC_SUBST.
	(elf_shlib_list_options): Likewise.
	(elf_plt_unwind_list_options): Likewise.
	* lexsup.c (elf_shlib_list_options): New.
	(elf_static_list_options): Likewise.
	(elf_plt_unwind_list_options): Likewise.
	(ld_list_options): Likewise.
	(help): Call ld_list_options.
	* Makefile.in: Regenerated.
	* configure: Likewise.
	* emulparams/plt_unwind.sh (PLT_UNWIND): New.
	(PARSE_AND_LIST_OPTIONS): Removed.
	* emultempl/elf32.em (gld_list_options): New.
	(gld${EMULATION_NAME}_list_options): Define only if BNDPLT or
	PARSE_AND_LIST_OPTIONS is defined.
	(ld_${EMULATION_NAME}_emulation): Replace
	gld${EMULATION_NAME}_list_options with ${gld_list_options.

ld/ChangeLog

@@ -1,3 +1,25 @@
+2015-04-08  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* Makefile.am (ELF_CLFAGS): New.
+	(AM_CFLAGS): Add $(ELF_CLFAGS).
+	* configure.ac (elf_list_options): New.  AC_SUBST.
+	(elf_shlib_list_options): Likewise.
+	(elf_plt_unwind_list_options): Likewise.
+	* lexsup.c (elf_shlib_list_options): New.
+	(elf_static_list_options): Likewise.
+	(elf_plt_unwind_list_options): Likewise.
+	(ld_list_options): Likewise.
+	(help): Call ld_list_options.
+	* Makefile.in: Regenerated.
+	* configure: Likewise.
+	* emulparams/plt_unwind.sh (PLT_UNWIND): New.
+	(PARSE_AND_LIST_OPTIONS): Removed.
+	* emultempl/elf32.em (gld_list_options): New.
+	(gld${EMULATION_NAME}_list_options): Define only if BNDPLT or
+	PARSE_AND_LIST_OPTIONS is defined.
+	(ld_${EMULATION_NAME}_emulation): Replace
+	gld${EMULATION_NAME}_list_options with ${gld_list_options.
+
 2015-04-07  Alan Modra  <amodra@gmail.com>
 
 	PR ld/18176

ld/Makefile.am

@@ -34,9 +34,12 @@ LEX = `if [ -f ../flex/flex ]; then echo ../flex/flex; else echo @LEX@; fi`
 am__skiplex =
 am__skipyacc =
 
+ELF_CLFAGS=-DELF_LIST_OPTIONS=@elf_list_options@ \
+	   -DELF_SHLIB_LIST_OPTIONS=@elf_shlib_list_options@ \
+	   -DELF_PLT_UNWIND_LIST_OPTIONS=@elf_plt_unwind_list_options@
 WARN_CFLAGS = @WARN_CFLAGS@
 NO_WERROR = @NO_WERROR@
-AM_CFLAGS = $(WARN_CFLAGS)
+AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
 
 # Conditionally enable the plugin interface.
 if ENABLE_PLUGINS

ld/Makefile.in

@@ -344,6 +344,9 @@ datarootdir = @datarootdir@
 do_compare = @do_compare@
 docdir = @docdir@
 dvidir = @dvidir@
+elf_list_options = @elf_list_options@
+elf_plt_unwind_list_options = @elf_plt_unwind_list_options@
+elf_shlib_list_options = @elf_shlib_list_options@
 enable_initfini_array = @enable_initfini_array@
 exec_prefix = @exec_prefix@
 host = @host@
@@ -391,7 +394,11 @@ tooldir = $(exec_prefix)/$(target_alias)
 # maintainer mode is disabled.  Avoid this.
 am__skiplex = 
 am__skipyacc = 
-AM_CFLAGS = $(WARN_CFLAGS)
+ELF_CLFAGS = -DELF_LIST_OPTIONS=@elf_list_options@ \
+	   -DELF_SHLIB_LIST_OPTIONS=@elf_shlib_list_options@ \
+	   -DELF_PLT_UNWIND_LIST_OPTIONS=@elf_plt_unwind_list_options@
+
+AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
 @ENABLE_PLUGINS_FALSE@PLUGIN_C = 
 
 # Conditionally enable the plugin interface.

ld/configure

@@ -608,6 +608,9 @@ LIB_PATH
 EMUL_EXTRA_OFILES
 EMULATION_OFILES
 EMUL
+elf_plt_unwind_list_options
+elf_shlib_list_options
+elf_list_options
 STRINGIFY
 enable_initfini_array
 ENABLE_PLUGINS_FALSE
@@ -11710,7 +11713,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11713 "configure"
+#line 11716 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11816,7 +11819,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11819 "configure"
+#line 11822 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17025,6 +17028,9 @@ _ACEOF
   fi
 fi
 
+elf_list_options=FALSE
+elf_shlib_list_options=FALSE
+elf_plt_unwind_list_options=FALSE
 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 do
   if test "$targ_alias" = "all"; then
@@ -17055,7 +17061,20 @@ do
 
     for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
 	case " $all_emuls " in
-	*" e${i}.o "*) ;;
+	*" e${i}.o "*)
+	  case "${i}" in
+	  *elf*)
+	    elf_list_options=TRUE
+	    . ${srcdir}/emulparams/${i}.sh
+	    if test x${GENERATE_SHLIB_SCRIPT} = xyes; then
+	      elf_shlib_list_options=TRUE
+	    fi
+	    if test x${PLT_UNWIND} = xyes; then
+	      elf_plt_unwind_list_options=TRUE
+	    fi
+	    ;;
+	  esac
+	  ;;
 	*)
 	  all_emuls="$all_emuls e${i}.o"
 	  eval result=\$tdir_$i
@@ -17092,6 +17111,9 @@ done
 
 
 
+
+
+
 TDIRS=tdirs
 
 

ld/configure.ac

@@ -281,6 +281,9 @@ if test x${want64} = xfalse; then
   fi
 fi
 
+elf_list_options=FALSE
+elf_shlib_list_options=FALSE
+elf_plt_unwind_list_options=FALSE
 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 do
   if test "$targ_alias" = "all"; then
@@ -311,7 +314,20 @@ do
 
     for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
 	case " $all_emuls " in
-	*" e${i}.o "*) ;;
+	*" e${i}.o "*)
+	  case "${i}" in
+	  *elf*)
+	    elf_list_options=TRUE
+	    . ${srcdir}/emulparams/${i}.sh
+	    if test x${GENERATE_SHLIB_SCRIPT} = xyes; then
+	      elf_shlib_list_options=TRUE
+	    fi
+	    if test x${PLT_UNWIND} = xyes; then
+	      elf_plt_unwind_list_options=TRUE
+	    fi
+	    ;;
+	  esac
+	  ;;
 	*)
 	  all_emuls="$all_emuls e${i}.o"
 	  eval result=\$tdir_$i
@@ -346,6 +362,9 @@ do
   fi
 done
 
+AC_SUBST(elf_list_options)
+AC_SUBST(elf_shlib_list_options)
+AC_SUBST(elf_plt_unwind_list_options)
 AC_SUBST(EMUL)
 
 TDIRS=tdirs

ld/emulparams/plt_unwind.sh

@@ -1,3 +1,5 @@
+PLT_UNWIND=yes
+
 PARSE_AND_LIST_PROLOGUE='
 #define OPTION_LD_GENERATED_UNWIND_INFO	301
 #define OPTION_NO_LD_GENERATED_UNWIND_INFO 302
@@ -10,13 +12,6 @@ PARSE_AND_LIST_LONGOPTS='
    OPTION_NO_LD_GENERATED_UNWIND_INFO},
 '
 
-PARSE_AND_LIST_OPTIONS='
-  fprintf (file, _("\
-  --ld-generated-unwind-info  Generate exception handling info for PLT.\n\
-  --no-ld-generated-unwind-info Don'\''t do so.\n"
-		   ));
-'
-
 PARSE_AND_LIST_ARGS_CASES='
     case OPTION_LD_GENERATED_UNWIND_INFO:
       link_info.no_ld_generated_unwind_info = FALSE;

ld/emultempl/elf32.em

@@ -2366,117 +2366,14 @@ fragment <<EOF
 EOF
 
 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
+gld_list_options="gld${EMULATION_NAME}_list_options"
+if test -n "$PARSE_AND_LIST_OPTIONS" || test x"$BNDPLT" = xyes; then
 fragment <<EOF
 
 static void
 gld${EMULATION_NAME}_list_options (FILE * file)
 {
 EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  --audit=AUDITLIB            Specify a library to use for auditing\n"));
-  fprintf (file, _("\
-  -Bgroup                     Selects group name lookup rules for DSO\n"));
-EOF
-fi
-fragment <<EOF
-  fprintf (file, _("\
-  --build-id[=STYLE]          Generate build ID note\n"));
-EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -P AUDITLIB, --depaudit=AUDITLIB\n" "\
-			      Specify a library to use for auditing dependencies\n"));
-  fprintf (file, _("\
-  --disable-new-dtags         Disable new dynamic tags\n"));
-  fprintf (file, _("\
-  --enable-new-dtags          Enable new dynamic tags\n"));
-  fprintf (file, _("\
-  --eh-frame-hdr              Create .eh_frame_hdr section\n"));
-  fprintf (file, _("\
-  --exclude-libs=LIBS         Make all symbols in LIBS hidden\n"));
-  fprintf (file, _("\
-  --hash-style=STYLE          Set hash style to sysv, gnu or both\n"));
-  fprintf (file, _("\
-  -z combreloc                Merge dynamic relocs into one section and sort\n"));
-EOF
-fi
-
-fragment <<EOF
-  fprintf (file, _("\
-  -z common-page-size=SIZE    Set common page size to SIZE\n"));
-  fprintf (file, _("\
-  -z defs                     Report unresolved symbols in object files.\n"));
-  fprintf (file, _("\
-  -z execstack                Mark executable as requiring executable stack\n"));
-EOF
-
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z global                   Make symbols in DSO available for subsequently\n\
-			       loaded objects\n"));
-  fprintf (file, _("\
-  -z initfirst                Mark DSO to be initialized first at runtime\n"));
-  fprintf (file, _("\
-  -z interpose                Mark object to interpose all DSOs but executable\n"));
-  fprintf (file, _("\
-  -z lazy                     Mark object lazy runtime binding (default)\n"));
-  fprintf (file, _("\
-  -z loadfltr                 Mark object requiring immediate process\n"));
-EOF
-fi
-
-fragment <<EOF
-  fprintf (file, _("\
-  -z max-page-size=SIZE       Set maximum page size to SIZE\n"));
-  fprintf (file, _("\
-  -z muldefs                  Allow multiple definitions\n"));
-EOF
-
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z nocombreloc              Don't merge dynamic relocs into one section\n"));
-  fprintf (file, _("\
-  -z nocopyreloc              Don't create copy relocs\n"));
-  fprintf (file, _("\
-  -z nodefaultlib             Mark object not to use default search paths\n"));
-  fprintf (file, _("\
-  -z nodelete                 Mark DSO non-deletable at runtime\n"));
-  fprintf (file, _("\
-  -z nodlopen                 Mark DSO not available to dlopen\n"));
-  fprintf (file, _("\
-  -z nodump                   Mark DSO not available to dldump\n"));
-EOF
-fi
-fragment <<EOF
-  fprintf (file, _("\
-  -z noexecstack              Mark executable as not requiring executable stack\n"));
-EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z text                     Treat DT_TEXTREL in shared object as error\n"));
-  fprintf (file, _("\
-  -z notext                   Don't treat DT_TEXTREL in shared object as error\n"));
-  fprintf (file, _("\
-  -z textoff                  Don't treat DT_TEXTREL in shared object as error\n"));
-  fprintf (file, _("\
-  -z norelro                  Don't create RELRO program header\n"));
-  fprintf (file, _("\
-  -z now                      Mark object non-lazy runtime binding\n"));
-  fprintf (file, _("\
-  -z origin                   Mark object requiring immediate \$ORIGIN\n\
-				processing at runtime\n"));
-  fprintf (file, _("\
-  -z relro                    Create RELRO program header\n"));
-  fprintf (file, _("\
-  -z stacksize=SIZE           Set size of stack segment\n"));
-EOF
-fi
 
 if test x"$BNDPLT" = xyes; then
 fragment <<EOF
@@ -2494,6 +2391,9 @@ fi
 fragment <<EOF
 }
 EOF
+else
+  gld_list_options="NULL"
+fi
 
 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
 fragment <<EOF
@@ -2527,7 +2427,7 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
   gld${EMULATION_NAME}_add_options,
   gld${EMULATION_NAME}_handle_option,
   ${LDEMUL_UNRECOGNIZED_FILE-NULL},
-  ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
+  ${LDEMUL_LIST_OPTIONS-${gld_list_options}},
   ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
   ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
   ${LDEMUL_NEW_VERS_PATTERN-NULL},

ld/lexsup.c

@@ -1652,6 +1652,112 @@ set_segment_start (const char *section, char *valstr)
   lang_section_start (section, exp_intop (val), seg);
 }
 
+static void
+elf_shlib_list_options (FILE *file)
+{
+  fprintf (file, _("\
+  --audit=AUDITLIB            Specify a library to use for auditing\n"));
+  fprintf (file, _("\
+  -Bgroup                     Selects group name lookup rules for DSO\n"));
+  fprintf (file, _("\
+  --disable-new-dtags         Disable new dynamic tags\n"));
+  fprintf (file, _("\
+  --enable-new-dtags          Enable new dynamic tags\n"));
+  fprintf (file, _("\
+  --eh-frame-hdr              Create .eh_frame_hdr section\n"));
+  fprintf (file, _("\
+  --exclude-libs=LIBS         Make all symbols in LIBS hidden\n"));
+  fprintf (file, _("\
+  --hash-style=STYLE          Set hash style to sysv, gnu or both\n"));
+  fprintf (file, _("\
+  -P AUDITLIB, --depaudit=AUDITLIB\n" "\
+			      Specify a library to use for auditing dependencies\n"));
+  fprintf (file, _("\
+  -z combreloc                Merge dynamic relocs into one section and sort\n"));
+  fprintf (file, _("\
+  -z nocombreloc              Don't merge dynamic relocs into one section\n"));
+  fprintf (file, _("\
+  -z global                   Make symbols in DSO available for subsequently\n\
+			       loaded objects\n"));
+  fprintf (file, _("\
+  -z initfirst                Mark DSO to be initialized first at runtime\n"));
+  fprintf (file, _("\
+  -z interpose                Mark object to interpose all DSOs but executable\n"));
+  fprintf (file, _("\
+  -z lazy                     Mark object lazy runtime binding (default)\n"));
+  fprintf (file, _("\
+  -z loadfltr                 Mark object requiring immediate process\n"));
+  fprintf (file, _("\
+  -z nocopyreloc              Don't create copy relocs\n"));
+  fprintf (file, _("\
+  -z nodefaultlib             Mark object not to use default search paths\n"));
+  fprintf (file, _("\
+  -z nodelete                 Mark DSO non-deletable at runtime\n"));
+  fprintf (file, _("\
+  -z nodlopen                 Mark DSO not available to dlopen\n"));
+  fprintf (file, _("\
+  -z nodump                   Mark DSO not available to dldump\n"));
+  fprintf (file, _("\
+  -z now                      Mark object non-lazy runtime binding\n"));
+  fprintf (file, _("\
+  -z origin                   Mark object requiring immediate $ORIGIN\n\
+				processing at runtime\n"));
+  fprintf (file, _("\
+  -z relro                    Create RELRO program header\n"));
+  fprintf (file, _("\
+  -z norelro                  Don't create RELRO program header\n"));
+  fprintf (file, _("\
+  -z stacksize=SIZE           Set size of stack segment\n"));
+  fprintf (file, _("\
+  -z text                     Treat DT_TEXTREL in shared object as error\n"));
+  fprintf (file, _("\
+  -z notext                   Don't treat DT_TEXTREL in shared object as error\n"));
+  fprintf (file, _("\
+  -z textoff                  Don't treat DT_TEXTREL in shared object as error\n"));
+}
+
+static void
+elf_static_list_options (FILE *file)
+{
+  fprintf (file, _("\
+  --build-id[=STYLE]          Generate build ID note\n"));
+  fprintf (file, _("\
+  -z common-page-size=SIZE    Set common page size to SIZE\n"));
+  fprintf (file, _("\
+  -z max-page-size=SIZE       Set maximum page size to SIZE\n"));
+  fprintf (file, _("\
+  -z defs                     Report unresolved symbols in object files.\n"));
+  fprintf (file, _("\
+  -z muldefs                  Allow multiple definitions\n"));
+  fprintf (file, _("\
+  -z execstack                Mark executable as requiring executable stack\n"));
+  fprintf (file, _("\
+  -z noexecstack              Mark executable as not requiring executable stack\n"));
+}
+
+static void
+elf_plt_unwind_list_options (FILE *file)
+{
+  fprintf (file, _("\
+  --ld-generated-unwind-info  Generate exception handling info for PLT\n\
+  --no-ld-generated-unwind-info\n\
+                              Don't generate exception handling info for PLT\n"));
+}
+
+static void
+ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
+		 bfd_boolean plt_unwind)
+{
+  if (!elf)
+    return;
+  printf (_("ELF emulations:\n"));
+  if (plt_unwind)
+    elf_plt_unwind_list_options (file);
+  elf_static_list_options (file);
+  if (shlib)
+    elf_shlib_list_options (file);
+}
+
 
 /* Print help messages for the options.  */
 
@@ -1764,6 +1870,8 @@ help (void)
 
   /* xgettext:c-format */
   printf (_("%s: emulation specific options:\n"), program_name);
+  ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
+		   ELF_PLT_UNWIND_LIST_OPTIONS);
   ldemul_list_emulation_options (stdout);
   printf ("\n");