Move gdbserver to top level

This patch moves gdbserver to the top level.

This patch is as close to a pure move as possible -- gdbserver still
builds its own variant of gnulib and gdbsupport.  Changing this will
be done in a separate patch.

[v2] Note that, per Simon's review comment, this patch changes the
tree so that gdbserver is not built for or1k or score.  This makes
sense, because there is apparently not actually a gdbserver port here.

[v3] This version of the patch also splits out some configury into a
new file, gdbserver/configure.host, so that the top-level configure
script can simply rely on it in order to decide whether gdbserver
should be built.

[v4] This version adds documentation and removes some unnecessary
top-level dependencies.

[v5] Update docs to mention "make all-gdbserver" and change how
top-level configure decides whether to build gdbserver, switching to a
single, shared script.

Tested by the buildbot.

ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>
	    Pedro Alves  <palves@redhat.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
	* gdbserver: New directory, moved from gdb/gdbserver.
	* configure.ac (host_tools): Add gdbserver.
	Only build gdbserver on certain systems.
	* Makefile.in, configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gdbserver.
	* MAINTAINERS: Add gdbserver.

gdb/ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>

	* README: Update gdbserver documentation.
	* gdbserver: Move to top level.
	* configure.tgt (build_gdbserver): Remove.
	* configure.ac: Remove --enable-gdbserver.
	* configure: Rebuild.
	* Makefile.in (distclean): Don't mention gdbserver.

Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e

ChangeLog

@@ -1,3 +1,14 @@
+2020-02-07  Tom Tromey  <tom@tromey.com>
+	    Pedro Alves  <palves@redhat.com>
+
+	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
+	* gdbserver: New directory, moved from gdb/gdbserver.
+	* configure.ac (host_tools): Add gdbserver.
+	Only build gdbserver on certain systems.
+	* Makefile.in, configure: Rebuild.
+	* Makefile.def (host_modules, dependencies): Add gdbserver.
+	* MAINTAINERS: Add gdbserver.
+
 2020-01-28  Sergio Durigan Junior  <sergiodj@redhat.com>
 
 	* src-release.sh (getver): Look for gdbsupport's

MAINTAINERS

@@ -41,7 +41,7 @@ config.guess; config.sub; readline/support/config.{sub,guess}
 depcomp; mkinstalldirs
         Send bug reports and patches to bug-automake@gnu.org.
 
-gdb/; gdbsupport/; gnulib/; readline/; sim/; GDB's part of include/
+gdb/; gdbserver/; gdbsupport/; gnulib/; readline/; sim/; GDB's part of include/
 	GDB: http://www.gnu.org/software/gdb/
 	Patches to gdb-patches@sourceware.org.
 	See also gdb/MAINTAINERS and sim/MAINTAINERS.

Makefile.def

@@ -114,6 +114,7 @@ host_modules= { module= zlib; no_install=true; no_check=true;
 	        extra_configure_flags='@extra_host_zlib_configure_flags@';};
 host_modules= { module= gnulib; };
 host_modules= { module= gdbsupport; };
+host_modules= { module= gdbserver; };
 host_modules= { module= gdb; };
 host_modules= { module= expect; };
 host_modules= { module= guile; };

Makefile.in

@@ -944,6 +944,7 @@ configure-host:  \
     maybe-configure-zlib \
     maybe-configure-gnulib \
     maybe-configure-gdbsupport \
+    maybe-configure-gdbserver \
     maybe-configure-gdb \
     maybe-configure-expect \
     maybe-configure-guile \
@@ -1099,6 +1100,7 @@ all-host: maybe-all-zlib
 @endif zlib-no-bootstrap
 all-host: maybe-all-gnulib
 all-host: maybe-all-gdbsupport
+all-host: maybe-all-gdbserver
 all-host: maybe-all-gdb
 all-host: maybe-all-expect
 all-host: maybe-all-guile
@@ -1208,6 +1210,7 @@ info-host: maybe-info-texinfo
 info-host: maybe-info-zlib
 info-host: maybe-info-gnulib
 info-host: maybe-info-gdbsupport
+info-host: maybe-info-gdbserver
 info-host: maybe-info-gdb
 info-host: maybe-info-expect
 info-host: maybe-info-guile
@@ -1296,6 +1299,7 @@ dvi-host: maybe-dvi-texinfo
 dvi-host: maybe-dvi-zlib
 dvi-host: maybe-dvi-gnulib
 dvi-host: maybe-dvi-gdbsupport
+dvi-host: maybe-dvi-gdbserver
 dvi-host: maybe-dvi-gdb
 dvi-host: maybe-dvi-expect
 dvi-host: maybe-dvi-guile
@@ -1384,6 +1388,7 @@ pdf-host: maybe-pdf-texinfo
 pdf-host: maybe-pdf-zlib
 pdf-host: maybe-pdf-gnulib
 pdf-host: maybe-pdf-gdbsupport
+pdf-host: maybe-pdf-gdbserver
 pdf-host: maybe-pdf-gdb
 pdf-host: maybe-pdf-expect
 pdf-host: maybe-pdf-guile
@@ -1472,6 +1477,7 @@ html-host: maybe-html-texinfo
 html-host: maybe-html-zlib
 html-host: maybe-html-gnulib
 html-host: maybe-html-gdbsupport
+html-host: maybe-html-gdbserver
 html-host: maybe-html-gdb
 html-host: maybe-html-expect
 html-host: maybe-html-guile
@@ -1560,6 +1566,7 @@ TAGS-host: maybe-TAGS-texinfo
 TAGS-host: maybe-TAGS-zlib
 TAGS-host: maybe-TAGS-gnulib
 TAGS-host: maybe-TAGS-gdbsupport
+TAGS-host: maybe-TAGS-gdbserver
 TAGS-host: maybe-TAGS-gdb
 TAGS-host: maybe-TAGS-expect
 TAGS-host: maybe-TAGS-guile
@@ -1648,6 +1655,7 @@ install-info-host: maybe-install-info-texinfo
 install-info-host: maybe-install-info-zlib
 install-info-host: maybe-install-info-gnulib
 install-info-host: maybe-install-info-gdbsupport
+install-info-host: maybe-install-info-gdbserver
 install-info-host: maybe-install-info-gdb
 install-info-host: maybe-install-info-expect
 install-info-host: maybe-install-info-guile
@@ -1736,6 +1744,7 @@ install-pdf-host: maybe-install-pdf-texinfo
 install-pdf-host: maybe-install-pdf-zlib
 install-pdf-host: maybe-install-pdf-gnulib
 install-pdf-host: maybe-install-pdf-gdbsupport
+install-pdf-host: maybe-install-pdf-gdbserver
 install-pdf-host: maybe-install-pdf-gdb
 install-pdf-host: maybe-install-pdf-expect
 install-pdf-host: maybe-install-pdf-guile
@@ -1824,6 +1833,7 @@ install-html-host: maybe-install-html-texinfo
 install-html-host: maybe-install-html-zlib
 install-html-host: maybe-install-html-gnulib
 install-html-host: maybe-install-html-gdbsupport
+install-html-host: maybe-install-html-gdbserver
 install-html-host: maybe-install-html-gdb
 install-html-host: maybe-install-html-expect
 install-html-host: maybe-install-html-guile
@@ -1912,6 +1922,7 @@ installcheck-host: maybe-installcheck-texinfo
 installcheck-host: maybe-installcheck-zlib
 installcheck-host: maybe-installcheck-gnulib
 installcheck-host: maybe-installcheck-gdbsupport
+installcheck-host: maybe-installcheck-gdbserver
 installcheck-host: maybe-installcheck-gdb
 installcheck-host: maybe-installcheck-expect
 installcheck-host: maybe-installcheck-guile
@@ -2000,6 +2011,7 @@ mostlyclean-host: maybe-mostlyclean-texinfo
 mostlyclean-host: maybe-mostlyclean-zlib
 mostlyclean-host: maybe-mostlyclean-gnulib
 mostlyclean-host: maybe-mostlyclean-gdbsupport
+mostlyclean-host: maybe-mostlyclean-gdbserver
 mostlyclean-host: maybe-mostlyclean-gdb
 mostlyclean-host: maybe-mostlyclean-expect
 mostlyclean-host: maybe-mostlyclean-guile
@@ -2088,6 +2100,7 @@ clean-host: maybe-clean-texinfo
 clean-host: maybe-clean-zlib
 clean-host: maybe-clean-gnulib
 clean-host: maybe-clean-gdbsupport
+clean-host: maybe-clean-gdbserver
 clean-host: maybe-clean-gdb
 clean-host: maybe-clean-expect
 clean-host: maybe-clean-guile
@@ -2176,6 +2189,7 @@ distclean-host: maybe-distclean-texinfo
 distclean-host: maybe-distclean-zlib
 distclean-host: maybe-distclean-gnulib
 distclean-host: maybe-distclean-gdbsupport
+distclean-host: maybe-distclean-gdbserver
 distclean-host: maybe-distclean-gdb
 distclean-host: maybe-distclean-expect
 distclean-host: maybe-distclean-guile
@@ -2264,6 +2278,7 @@ maintainer-clean-host: maybe-maintainer-clean-texinfo
 maintainer-clean-host: maybe-maintainer-clean-zlib
 maintainer-clean-host: maybe-maintainer-clean-gnulib
 maintainer-clean-host: maybe-maintainer-clean-gdbsupport
+maintainer-clean-host: maybe-maintainer-clean-gdbserver
 maintainer-clean-host: maybe-maintainer-clean-gdb
 maintainer-clean-host: maybe-maintainer-clean-expect
 maintainer-clean-host: maybe-maintainer-clean-guile
@@ -2408,6 +2423,7 @@ check-host:  \
     maybe-check-zlib \
     maybe-check-gnulib \
     maybe-check-gdbsupport \
+    maybe-check-gdbserver \
     maybe-check-gdb \
     maybe-check-expect \
     maybe-check-guile \
@@ -2543,6 +2559,7 @@ install-host-nogcc:  \
     maybe-install-zlib \
     maybe-install-gnulib \
     maybe-install-gdbsupport \
+    maybe-install-gdbserver \
     maybe-install-gdb \
     maybe-install-expect \
     maybe-install-guile \
@@ -2595,6 +2612,7 @@ install-host:  \
     maybe-install-zlib \
     maybe-install-gnulib \
     maybe-install-gdbsupport \
+    maybe-install-gdbserver \
     maybe-install-gdb \
     maybe-install-expect \
     maybe-install-guile \
@@ -2703,6 +2721,7 @@ install-strip-host:  \
     maybe-install-strip-zlib \
     maybe-install-strip-gnulib \
     maybe-install-strip-gdbsupport \
+    maybe-install-strip-gdbserver \
     maybe-install-strip-gdb \
     maybe-install-strip-expect \
     maybe-install-strip-guile \
@@ -29005,6 +29024,447 @@ maintainer-clean-gdbsupport:
 
 
 
+.PHONY: configure-gdbserver maybe-configure-gdbserver
+maybe-configure-gdbserver:
+@if gcc-bootstrap
+configure-gdbserver: stage_current
+@endif gcc-bootstrap
+@if gdbserver
+maybe-configure-gdbserver: configure-gdbserver
+configure-gdbserver: 
+	@: $(MAKE); $(unstage)
+	@r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	test ! -f $(HOST_SUBDIR)/gdbserver/Makefile || exit 0; \
+	$(SHELL) $(srcdir)/mkinstalldirs $(HOST_SUBDIR)/gdbserver; \
+	$(HOST_EXPORTS)  \
+	echo Configuring in $(HOST_SUBDIR)/gdbserver; \
+	cd "$(HOST_SUBDIR)/gdbserver" || exit 1; \
+	case $(srcdir) in \
+	  /* | [A-Za-z]:[\\/]*) topdir=$(srcdir) ;; \
+	  *) topdir=`echo $(HOST_SUBDIR)/gdbserver/ | \
+		sed -e 's,\./,,g' -e 's,[^/]*/,../,g' `$(srcdir) ;; \
+	esac; \
+	module_srcdir=gdbserver; \
+	$(SHELL) \
+	  $$s/$$module_srcdir/configure \
+	  --srcdir=$${topdir}/$$module_srcdir \
+	  $(HOST_CONFIGARGS) --build=${build_alias} --host=${host_alias} \
+	  --target=${target_alias}  \
+	  || exit 1
+@endif gdbserver
+
+
+
+
+
+.PHONY: all-gdbserver maybe-all-gdbserver
+maybe-all-gdbserver:
+@if gcc-bootstrap
+all-gdbserver: stage_current
+@endif gcc-bootstrap
+@if gdbserver
+TARGET-gdbserver=all
+maybe-all-gdbserver: all-gdbserver
+all-gdbserver: configure-gdbserver
+	@: $(MAKE); $(unstage)
+	@r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS)  \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) $(EXTRA_HOST_FLAGS) $(STAGE1_FLAGS_TO_PASS)  \
+		$(TARGET-gdbserver))
+@endif gdbserver
+
+
+
+
+.PHONY: check-gdbserver maybe-check-gdbserver
+maybe-check-gdbserver:
+@if gdbserver
+maybe-check-gdbserver: check-gdbserver
+
+check-gdbserver:
+	@: $(MAKE); $(unstage)
+	@r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS)  \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(FLAGS_TO_PASS)  check)
+
+@endif gdbserver
+
+.PHONY: install-gdbserver maybe-install-gdbserver
+maybe-install-gdbserver:
+@if gdbserver
+maybe-install-gdbserver: install-gdbserver
+
+install-gdbserver: installdirs
+	@: $(MAKE); $(unstage)
+	@r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(FLAGS_TO_PASS)  install)
+
+@endif gdbserver
+
+.PHONY: install-strip-gdbserver maybe-install-strip-gdbserver
+maybe-install-strip-gdbserver:
+@if gdbserver
+maybe-install-strip-gdbserver: install-strip-gdbserver
+
+install-strip-gdbserver: installdirs
+	@: $(MAKE); $(unstage)
+	@r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(FLAGS_TO_PASS)  install-strip)
+
+@endif gdbserver
+
+# Other targets (info, dvi, pdf, etc.)
+
+.PHONY: maybe-info-gdbserver info-gdbserver
+maybe-info-gdbserver:
+@if gdbserver
+maybe-info-gdbserver: info-gdbserver
+
+info-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing info in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          info) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-dvi-gdbserver dvi-gdbserver
+maybe-dvi-gdbserver:
+@if gdbserver
+maybe-dvi-gdbserver: dvi-gdbserver
+
+dvi-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing dvi in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          dvi) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-pdf-gdbserver pdf-gdbserver
+maybe-pdf-gdbserver:
+@if gdbserver
+maybe-pdf-gdbserver: pdf-gdbserver
+
+pdf-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing pdf in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          pdf) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-html-gdbserver html-gdbserver
+maybe-html-gdbserver:
+@if gdbserver
+maybe-html-gdbserver: html-gdbserver
+
+html-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing html in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          html) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-TAGS-gdbserver TAGS-gdbserver
+maybe-TAGS-gdbserver:
+@if gdbserver
+maybe-TAGS-gdbserver: TAGS-gdbserver
+
+TAGS-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing TAGS in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          TAGS) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-install-info-gdbserver install-info-gdbserver
+maybe-install-info-gdbserver:
+@if gdbserver
+maybe-install-info-gdbserver: install-info-gdbserver
+
+install-info-gdbserver: \
+    configure-gdbserver \
+    info-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing install-info in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          install-info) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-install-pdf-gdbserver install-pdf-gdbserver
+maybe-install-pdf-gdbserver:
+@if gdbserver
+maybe-install-pdf-gdbserver: install-pdf-gdbserver
+
+install-pdf-gdbserver: \
+    configure-gdbserver \
+    pdf-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing install-pdf in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          install-pdf) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-install-html-gdbserver install-html-gdbserver
+maybe-install-html-gdbserver:
+@if gdbserver
+maybe-install-html-gdbserver: install-html-gdbserver
+
+install-html-gdbserver: \
+    configure-gdbserver \
+    html-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing install-html in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          install-html) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-installcheck-gdbserver installcheck-gdbserver
+maybe-installcheck-gdbserver:
+@if gdbserver
+maybe-installcheck-gdbserver: installcheck-gdbserver
+
+installcheck-gdbserver: \
+    configure-gdbserver 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing installcheck in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          installcheck) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-mostlyclean-gdbserver mostlyclean-gdbserver
+maybe-mostlyclean-gdbserver:
+@if gdbserver
+maybe-mostlyclean-gdbserver: mostlyclean-gdbserver
+
+mostlyclean-gdbserver: 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing mostlyclean in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          mostlyclean) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-clean-gdbserver clean-gdbserver
+maybe-clean-gdbserver:
+@if gdbserver
+maybe-clean-gdbserver: clean-gdbserver
+
+clean-gdbserver: 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing clean in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          clean) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-distclean-gdbserver distclean-gdbserver
+maybe-distclean-gdbserver:
+@if gdbserver
+maybe-distclean-gdbserver: distclean-gdbserver
+
+distclean-gdbserver: 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing distclean in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          distclean) \
+	  || exit 1
+
+@endif gdbserver
+
+.PHONY: maybe-maintainer-clean-gdbserver maintainer-clean-gdbserver
+maybe-maintainer-clean-gdbserver:
+@if gdbserver
+maybe-maintainer-clean-gdbserver: maintainer-clean-gdbserver
+
+maintainer-clean-gdbserver: 
+	@: $(MAKE); $(unstage)
+	@[ -f ./gdbserver/Makefile ] || exit 0; \
+	r=`${PWD_COMMAND}`; export r; \
+	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+	$(HOST_EXPORTS) \
+	for flag in $(EXTRA_HOST_FLAGS) ; do \
+	  eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
+	done; \
+	echo "Doing maintainer-clean in gdbserver"; \
+	(cd $(HOST_SUBDIR)/gdbserver && \
+	  $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
+	          "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
+	          "RANLIB=$${RANLIB}" \
+	          "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" "WINDMC=$${WINDMC}" \
+	          maintainer-clean) \
+	  || exit 1
+
+@endif gdbserver
+
+
+
 .PHONY: configure-gdb maybe-configure-gdb
 maybe-configure-gdb:
 @if gcc-bootstrap

configure

@@ -2831,7 +2831,7 @@ host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktr
 # binutils, gas and ld appear in that order because it makes sense to run
 # "make check" in that particular order.
 # If --enable-gold is used, "gold" may replace "ld".
-host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
+host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 
 # these libraries are built for the target environment, and are built after
 # the host libraries and the host tools (which may be a cross compiler)
@@ -3538,6 +3538,25 @@ case "${target}" in
     ;;
 esac
 
+# Only allow gdbserver on some systems.
+if test -d ${srcdir}/gdbserver; then
+    if test x$enable_gdbserver = x; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gdbserver support" >&5
+$as_echo_n "checking for gdbserver support... " >&6; }
+	if (srcdir=${srcdir}/gdbserver; \
+		. ${srcdir}/configure.srv; \
+		test -n "$UNSUPPORTED")
+	then
+	    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+	    noconfigdirs="$noconfigdirs gdbserver"
+	else
+	    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+	fi
+    fi
+fi
+
 # Disable libgo for some systems where it is known to not work.
 # For testing, you can easily override this with --enable-libgo.
 if test x$enable_libgo = x; then

configure.ac

@@ -1,6 +1,6 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-#   2014, 2015, 2016, 2019 Free Software Foundation, Inc.
+#   2014, 2015, 2016, 2019, 2020 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -140,7 +140,7 @@ host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktr
 # binutils, gas and ld appear in that order because it makes sense to run
 # "make check" in that particular order.
 # If --enable-gold is used, "gold" may replace "ld".
-host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
+host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 
 # these libraries are built for the target environment, and are built after
 # the host libraries and the host tools (which may be a cross compiler)
@@ -782,6 +782,22 @@ case "${target}" in
     ;;
 esac
 
+# Only allow gdbserver on some systems.
+if test -d ${srcdir}/gdbserver; then
+    if test x$enable_gdbserver = x; then
+	AC_MSG_CHECKING([for gdbserver support])
+	if (srcdir=${srcdir}/gdbserver; \
+		. ${srcdir}/configure.srv; \
+		test -n "$UNSUPPORTED")
+	then
+	    AC_MSG_RESULT([no])
+	    noconfigdirs="$noconfigdirs gdbserver"
+	else
+	    AC_MSG_RESULT([yes])
+	fi
+    fi
+fi
+
 # Disable libgo for some systems where it is known to not work.
 # For testing, you can easily override this with --enable-libgo.
 if test x$enable_libgo = x; then

gdb/ChangeLog

@@ -1,3 +1,12 @@
+2020-02-07  Tom Tromey  <tom@tromey.com>
+
+	* README: Update gdbserver documentation.
+	* gdbserver: Move to top level.
+	* configure.tgt (build_gdbserver): Remove.
+	* configure.ac: Remove --enable-gdbserver.
+	* configure: Rebuild.
+	* Makefile.in (distclean): Don't mention gdbserver.
+
 2020-02-06  Shahab Vahedi  <shahab@synopsys.com>
 
 	* source-cache.c (source_cache::ensure): Surround

gdb/Makefile.in

@@ -1898,13 +1898,8 @@ clean mostlyclean: $(CONFIG_CLEAN)
 # I believe this is wrong; the makefile standards for distclean just
 # describe removing files; the only sort of "re-create a distribution"
 # functionality described is if the distributed files are unmodified.
-# NB: While GDBSERVER might be configured on native systems, it isn't
-# always included in SUBDIRS.  Remove the gdbserver files explicitly.
 distclean: clean
 	@$(MAKE) $(FLAGS_TO_PASS) DO=distclean "DODIRS=$(CLEANDIRS)" subdir_do
-	rm -f gdbserver/config.status gdbserver/config.log
-	rm -f gdbserver/tm.h gdbserver/xm.h gdbserver/nm.h
-	rm -f gdbserver/Makefile gdbserver/config.cache
 	rm -f nm.h config.status config.h stamp-h b jit-reader.h
 	rm -f gdb-gdb.py gdb-gdb.gdb
 	rm -f y.output yacc.acts yacc.tmp y.tab.h

gdb/README

@@ -583,12 +583,11 @@ of remote stubs to be used with remote.c.  They are designed to run
 standalone on an m68k, i386, or SPARC cpu and communicate properly
 with the remote.c stub over a serial line.
 
-   The directory gdb/gdbserver/ contains `gdbserver', a program that
+   The directory gdbserver/ contains `gdbserver', a program that
 allows remote debugging for Unix applications.  GDBserver is only
-supported for some native configurations, including Sun 3, Sun 4, and
+supported for some native configurations.
-Linux.
 
-   The file gdb/gdbserver/README includes further notes on GDBserver; in
+   The file gdbserver/README includes further notes on GDBserver; in
 particular, it explains how to build GDBserver for cross-debugging
 (where GDBserver runs on the target machine, which is of a different
 architecture than the host machine running GDB).

gdb/configure

@@ -905,7 +905,6 @@ with_tcl
 with_tk
 with_x
 enable_sim
-enable_gdbserver
 with_babeltrace
 with_libbabeltrace_prefix
 with_xxhash
@@ -930,8 +929,7 @@ YACC
 YFLAGS
 XMKMF'
 ac_subdirs_all='testsuite
-gdbtk
+gdbtk'
-gdbserver'
 
 # Initialize some variables set by options.
 ac_init_help=
@@ -1575,8 +1573,6 @@ Optional Features:
                           gcc is used
   --enable-ubsan          enable undefined behavior sanitizer (auto/yes/no)
   --enable-sim            link gdb with simulator
-  --enable-gdbserver      automatically build gdbserver (yes/no/auto, default
-                          is auto)
   --enable-unit-tests     Enable the inclusion of unit tests when compiling
                           GDB
 
@@ -6738,7 +6734,6 @@ fi
 # For other settings, only the main target counts.
 gdb_sim=
 gdb_osabi=
-build_gdbserver=
 targ=$target; . ${srcdir}/configure.tgt
 
 # Fetch the default architecture and default target vector from BFD.
@@ -17848,40 +17843,6 @@ _ACEOF
 
 fi
 
-# Check whether --enable-gdbserver was given.
-if test "${enable_gdbserver+set}" = set; then :
-  enableval=$enable_gdbserver; case "${enableval}" in
-  yes| no|auto) ;;
-  *) as_fn_error $? "bad value ${enableval} for --enable-gdbserver option" "$LINENO" 5 ;;
-esac
-else
-  enable_gdbserver=auto
-fi
-
-
-# We only build gdbserver automatically in a native configuration, and
-# only if the user did not explicitly disable its build.
-if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether gdbserver is supported on this host" >&5
-$as_echo_n "checking whether gdbserver is supported on this host... " >&6; }
-  if test "x$build_gdbserver" = xyes; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-    subdirs="$subdirs gdbserver"
-
-    gdbserver_build_enabled=yes
-  else
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-  fi
-fi
-
-# If the user explicitly request the gdbserver to be built, verify that
-# we were in fact able to enable it.
-if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
-  as_fn_error $? "Automatic gdbserver build is not supported for this configuration" "$LINENO" 5
-fi
-
 # Check for babeltrace and babeltrace-ctf
 
 # Check whether --with-babeltrace was given.

gdb/configure.ac

@@ -254,7 +254,6 @@ AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 # For other settings, only the main target counts.
 gdb_sim=
 gdb_osabi=
-build_gdbserver=
 targ=$target; . ${srcdir}/configure.tgt
 
 # Fetch the default architecture and default target vector from BFD.
@@ -2001,33 +2000,6 @@ if test x"${gdb_osabi}" != x ; then
 		       [Define to the default OS ABI for this configuration.])
 fi
 
-AC_ARG_ENABLE(gdbserver,
-AS_HELP_STRING([--enable-gdbserver],
-               [automatically build gdbserver (yes/no/auto, default is auto)]),
-[case "${enableval}" in
-  yes| no|auto) ;;
-  *) AC_MSG_ERROR(bad value ${enableval} for --enable-gdbserver option) ;;
-esac],[enable_gdbserver=auto])
-
-# We only build gdbserver automatically in a native configuration, and
-# only if the user did not explicitly disable its build.
-if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
-  AC_MSG_CHECKING(whether gdbserver is supported on this host)
-  if test "x$build_gdbserver" = xyes; then
-    AC_MSG_RESULT(yes)
-    AC_CONFIG_SUBDIRS(gdbserver)
-    gdbserver_build_enabled=yes
-  else
-    AC_MSG_RESULT(no)
-  fi
-fi
-
-# If the user explicitly request the gdbserver to be built, verify that
-# we were in fact able to enable it.
-if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
-  AC_MSG_ERROR(Automatic gdbserver build is not supported for this configuration)
-fi
-
 # Check for babeltrace and babeltrace-ctf
 AC_ARG_WITH(babeltrace,
   AC_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),

gdb/configure.tgt

@@ -5,7 +5,6 @@
 #  gdb_target_obs	target-specific object files to use
 #  gdb_sim		simulator library for target
 #  gdb_osabi		default OS ABI to use with target
-#  build_gdbserver	set to "yes" if gdbserver supports target
 #  gdb_have_gcore	set to "true"/"false" if this target can run gcore
 
 # NOTE: Every file added to a gdb_target_obs variable for any target here
@@ -129,7 +128,6 @@ aarch64*-*-linux*)
 			arm-tdep.o arm-linux-tdep.o \
 			glibc-tdep.o linux-tdep.o solib-svr4.o \
 			symfile-mem.o linux-record.o"
-	build_gdbserver=yes
 	;;
 
 alpha*-*-linux*)
@@ -162,13 +160,11 @@ arc*-*-elf32)
 arm*-wince-pe | arm*-*-mingw32ce*)
 	# Target: ARM based machine running Windows CE (win32)
 	gdb_target_obs="arm-wince-tdep.o windows-tdep.o"
-	build_gdbserver=yes
 	;;
 arm*-*-linux*)
 	# Target: ARM based machine running GNU/Linux
 	gdb_target_obs="arch/arm-linux.o arm-linux-tdep.o glibc-tdep.o \
 			solib-svr4.o symfile-mem.o linux-tdep.o linux-record.o"
-	build_gdbserver=yes
 	;;
 arm*-*-freebsd*)
 	# Target: FreeBSD/arm
@@ -202,7 +198,6 @@ bfin-*-*linux*)
 	# Target: Blackfin Linux
 	gdb_target_obs="bfin-tdep.o bfin-linux-tdep.o linux-tdep.o"
 	gdb_sim=../sim/bfin/libsim.a
-	build_gdbserver=yes
 	;;
 bfin-*-*)
 	# Target: Blackfin processor
@@ -285,7 +280,6 @@ i[34567]86-*-nto*)
 	# Target: Intel 386 running qnx6.
 	gdb_target_obs="solib-svr4.o \
 			i386-nto-tdep.o nto-tdep.o"
-	build_gdbserver=yes
 	;;
 i[34567]86-*-solaris2* | x86_64-*-solaris2*)
 	# Target: Solaris x86_64
@@ -303,7 +297,6 @@ i[34567]86-*-linux*)
 	    # Target: GNU/Linux x86-64
 	    gdb_target_obs="amd64-linux-tdep.o ${gdb_target_obs}"
 	fi
-	build_gdbserver=yes
 	;;
 i[34567]86-*-gnu*)
 	# Target: Intel 386 running the GNU Hurd
@@ -312,12 +305,10 @@ i[34567]86-*-gnu*)
 i[34567]86-*-cygwin*)
 	# Target: Intel 386 running win32
 	gdb_target_obs="i386-cygwin-tdep.o windows-tdep.o"
-	build_gdbserver=yes
 	;;
 i[34567]86-*-mingw32*)
 	# Target: Intel 386 running win32
 	gdb_target_obs="i386-cygwin-tdep.o windows-tdep.o"
-	build_gdbserver=yes
 	;;
 i[34567]86-*-go32* | i[34567]86-*-msdosdjgpp*)
 	# Target: i386 running DJGPP/go32.
@@ -328,7 +319,6 @@ ia64-*-linux*)
 	# Target: Intel IA-64 running GNU/Linux
 	gdb_target_obs="ia64-linux-tdep.o linux-tdep.o \
 			solib-svr4.o symfile-mem.o"
-	build_gdbserver=yes
 	;;
 ia64-*-*vms*)
 	# Target: Intel IA-64 running OpenVMS
@@ -359,7 +349,6 @@ m32r*-*-linux*)
 			glibc-tdep.o solib-svr4.o symfile-mem.o \
 			linux-tdep.o"
 	gdb_sim=../sim/m32r/libsim.a
-	build_gdbserver=yes
 	;;
 m32r*-*-*)
 	# Target: Renesas m32r processor
@@ -382,7 +371,6 @@ m68*-*-linux*)
 	# Target: Motorola m68k with a.out and ELF
 	gdb_target_obs="m68k-tdep.o m68k-linux-tdep.o solib-svr4.o \
 			linux-tdep.o glibc-tdep.o symfile-mem.o"
-	build_gdbserver=yes
 	;;
 m68*-*-netbsd* | m68*-*-knetbsd*-gnu)
 	# Target: NetBSD/m68k
@@ -416,7 +404,6 @@ mips*-*-linux*)
 	gdb_target_obs="mips-tdep.o mips-linux-tdep.o glibc-tdep.o \
 			solib-svr4.o symfile-mem.o linux-tdep.o"
 	gdb_sim=../sim/mips/libsim.a
-	build_gdbserver=yes
 	;;
 mips*-*-netbsd* | mips*-*-knetbsd*-gnu)
 	# Target: MIPS running NetBSD
@@ -480,7 +467,6 @@ or1k*-*-linux*)
 	gdb_target_obs="or1k-tdep.o or1k-linux-tdep.o solib-svr4.o \
 			symfile-mem.o glibc-tdep.o linux-tdep.o"
 	gdb_sim=../sim/or1k/libsim.a
-	build_gdbserver=yes
 	;;
 
 or1k-*-* | or1knd-*-*)
@@ -522,7 +508,6 @@ powerpc*-*-linux*)
 			linux-record.o \
 			arch/ppc-linux-common.o"
 	gdb_sim=../sim/ppc/libsim.a
-	build_gdbserver=yes
 	;;
 powerpc-*-lynx*178)
 	# Target: PowerPC running Lynx178.
@@ -541,7 +526,6 @@ s390*-*-linux*)
 	# Target: S390 running Linux
 	gdb_target_obs="s390-linux-tdep.o s390-tdep.o solib-svr4.o \
 			linux-tdep.o linux-record.o symfile-mem.o"
-	build_gdbserver=yes
 	;;
 
 riscv*-*-freebsd*)
@@ -575,7 +559,6 @@ rx-*-elf)
 score-*-*)
 	# Target: S+core embedded system
 	gdb_target_obs="score-tdep.o"
-	build_gdbserver=yes
 	;;
 
 sh*-*-linux*)
@@ -584,7 +567,6 @@ sh*-*-linux*)
 			solib-svr4.o symfile-mem.o \
 			glibc-tdep.o linux-tdep.o"
 	gdb_sim=../sim/sh/libsim.a
-	build_gdbserver=yes
 	;;
 sh*-*-netbsdelf* | sh*-*-knetbsd*-gnu)
 	# Target: NetBSD/sh
@@ -612,7 +594,6 @@ sparc-*-linux*)
 	    gdb_target_obs="sparc64-tdep.o sparc64-sol2-tdep.o \
 			    sparc64-linux-tdep.o ${gdb_target_obs}"
 	fi
-	build_gdbserver=yes
 	;;
 sparc64-*-linux*)
 	# Target: GNU/Linux UltraSPARC
@@ -620,7 +601,6 @@ sparc64-*-linux*)
 			sparc64-linux-tdep.o sparc-tdep.o sparc-sol2-tdep.o \
 			sparc-linux-tdep.o solib-svr4.o linux-tdep.o \
 			ravenscar-thread.o sparc-ravenscar-thread.o"
-	build_gdbserver=yes
 	;;
 sparc*-*-freebsd* | sparc*-*-kfreebsd*-gnu)
 	# Target: FreeBSD/sparc64
@@ -689,7 +669,6 @@ tilegx-*-linux*)
 	# Target: TILE-Gx
 	gdb_target_obs="tilegx-tdep.o tilegx-linux-tdep.o solib-svr4.o \
 			symfile-mem.o glibc-tdep.o linux-tdep.o"
-	build_gdbserver=yes
 	;;
 
 xstormy16-*-*)
@@ -742,7 +721,6 @@ x86_64-*-linux*)
 	gdb_target_obs="amd64-linux-tdep.o ${i386_tobjs}  \
 			i386-linux-tdep.o glibc-tdep.o \
 			solib-svr4.o symfile-mem.o linux-tdep.o linux-record.o"
-	build_gdbserver=yes
 	;;
 x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu)
 	# Target: FreeBSD/amd64
@@ -754,7 +732,6 @@ x86_64-*-mingw* | x86_64-*-cygwin*)
 	gdb_target_obs="amd64-windows-tdep.o \
                         ${i386_tobjs} i386-cygwin-tdep.o \
                         windows-tdep.o"
-	build_gdbserver=yes
         ;;
 x86_64-*-netbsd* | x86_64-*-knetbsd*-gnu)
 	# Target: NetBSD/amd64
@@ -772,7 +749,6 @@ x86_64-*-rtems*)
 xtensa*-*-*linux*)
 	# Target: GNU/Linux Xtensa
 	gdb_target_obs="xtensa-linux-tdep.o symfile-mem.o linux-tdep.o"
-	build_gdbserver=yes
 	;;
 
 esac

gdbserver/ChangeLog

@@ -1,3 +1,20 @@
+2020-02-07  Tom Tromey  <tom@tromey.com>
+	    Pedro Alves  <palves@redhat.com>
+
+	* README: Update build documentation.
+	* configure.srv: Set UNSUPPORTED if host is unsupported.  Check
+	host, not target.
+	* configure.ac: Update paths.
+	* configure: Rebuild.
+	* acinclude.m4: Update paths.
+	* Makefile.in: Update include paths.
+	(depcomp, INCLUDE_DIR, INCGNU, INCSUPPORT, INCLUDE_CFLAGS)
+	(SFILES, XML_DIR, n, $(GNULIB_BUILDDIR)/Makefile, config.status)
+	(version-generated.c, stamp-xml, regdat_sh, arch/%-ipa.o)
+	(gdbsupport/%-ipa.o, %-ipa.o, arch/%.o, gdbsupport/%.o, %.o)
+	(%-generated.c): Update paths.
+	* Move entire directory from ../gdb/gdbserver.
+
 2020-01-29  Maciej W. Rozycki  <macro@wdc.com>
 
 	* configure.srv <i[34567]86-*-mingw*>: Fix whitespace damage.

gdbserver/Makefile.in

@@ -66,7 +66,7 @@ STRIP = @STRIP@
 # Dependency tracking information.
 DEPMODE = @CCDEPMODE@
 DEPDIR = @DEPDIR@
-depcomp = $(SHELL) $(srcdir)/../../depcomp
+depcomp = $(SHELL) $(srcdir)/../depcomp
 
 # Directory containing source files.  Don't clean up the spacing,
 # this exact string is matched for by the "configure" script.
@@ -75,7 +75,7 @@ abs_top_srcdir = @abs_top_srcdir@
 abs_srcdir = @abs_srcdir@
 VPATH = @srcdir@
 
-include $(srcdir)/../silent-rules.mk
+include $(srcdir)/../gdb/silent-rules.mk
 
 # Note that these are overridden by GNU make-specific code below if
 # GNU make is used.  The overrides implement dependency tracking.
@@ -94,7 +94,7 @@ POSTCOMPILE = @true
 CC_LD = $(CXX) $(CXX_DIALECT)
 
 # Where is the "include" directory?  Traditionally ../include or ./include
-INCLUDE_DIR = ${srcdir}/../../include
+INCLUDE_DIR = ${srcdir}/../include
 INCLUDE_DEP = $$(INCLUDE_DIR)
 
 LIBIBERTY_BUILDDIR = build-libiberty-gdbserver
@@ -107,26 +107,26 @@ ustinc = @ustinc@
 # gnulib
 GNULIB_BUILDDIR = build-gnulib-gdbserver
 LIBGNU = $(GNULIB_BUILDDIR)/import/libgnu.a
-INCGNU = -I$(srcdir)/../../gnulib/import -I$(GNULIB_BUILDDIR)/import
+INCGNU = -I$(srcdir)/../gnulib/import -I$(GNULIB_BUILDDIR)/import
 
 # Generated headers in the gnulib directory.  These must be listed
 # so that they are generated before other files are compiled.
 GNULIB_H = $(GNULIB_BUILDDIR)/import/string.h @GNULIB_STDINT_H@
 
-INCSUPPORT = -I$(srcdir)/../.. -I../..
+INCSUPPORT = -I$(srcdir)/.. -I..
 
 # All the includes used for CFLAGS and for lint.
 # -I. for config files.
 # -I${srcdir} for our headers.
-# -I$(srcdir)/../regformats for regdef.h.
+# -I$(srcdir)/../gdb/regformats for regdef.h.
 #
 # We do not include ../target or ../nat in here because headers
 # in those directories should be included with the subdirectory.
 # e.g.: "target/wait.h".
 #
 INCLUDE_CFLAGS = -I. -I${srcdir} \
-	-I$(srcdir)/../regformats -I$(srcdir)/.. -I$(INCLUDE_DIR) \
+	-I$(srcdir)/../gdb/regformats -I$(srcdir)/.. -I$(INCLUDE_DIR) \
-	$(INCGNU) $(INCSUPPORT)
+	-I$(srcdir)/../gdb $(INCGNU) $(INCSUPPORT)
 
 # M{H,T}_CFLAGS, if defined, has host- and target-dependent CFLAGS
 # from the config/ directory.
@@ -202,46 +202,46 @@ SFILES = \
 	$(srcdir)/win32-low.c \
 	$(srcdir)/wincecompat.c \
 	$(srcdir)/x86-low.c \
-	$(srcdir)/../alloc.c \
+	$(srcdir)/../gdb/alloc.c \
-	$(srcdir)/../arch/arm.c \
+	$(srcdir)/../gdb/arch/arm.c \
-	$(srcdir)/../arch/arm-get-next-pcs.c \
+	$(srcdir)/../gdb/arch/arm-get-next-pcs.c \
-	$(srcdir)/../arch/arm-linux.c \
+	$(srcdir)/../gdb/arch/arm-linux.c \
-	$(srcdir)/../arch/ppc-linux-common.c \
+	$(srcdir)/../gdb/arch/ppc-linux-common.c \
-	$(srcdir)/../../gdbsupport/btrace-common.c \
+	$(srcdir)/../gdbsupport/btrace-common.c \
-	$(srcdir)/../../gdbsupport/buffer.c \
+	$(srcdir)/../gdbsupport/buffer.c \
-	$(srcdir)/../../gdbsupport/cleanups.c \
+	$(srcdir)/../gdbsupport/cleanups.c \
-	$(srcdir)/../../gdbsupport/common-debug.c \
+	$(srcdir)/../gdbsupport/common-debug.c \
-	$(srcdir)/../../gdbsupport/common-exceptions.c \
+	$(srcdir)/../gdbsupport/common-exceptions.c \
-	$(srcdir)/../../gdbsupport/common-inferior.c \
+	$(srcdir)/../gdbsupport/common-inferior.c \
-	$(srcdir)/../../gdbsupport/common-regcache.c \
+	$(srcdir)/../gdbsupport/common-regcache.c \
-	$(srcdir)/../../gdbsupport/common-utils.c \
+	$(srcdir)/../gdbsupport/common-utils.c \
-	$(srcdir)/../../gdbsupport/errors.c \
+	$(srcdir)/../gdbsupport/errors.c \
-	$(srcdir)/../../gdbsupport/environ.c \
+	$(srcdir)/../gdbsupport/environ.c \
-	$(srcdir)/../../gdbsupport/fileio.c \
+	$(srcdir)/../gdbsupport/fileio.c \
-	$(srcdir)/../../gdbsupport/filestuff.c \
+	$(srcdir)/../gdbsupport/filestuff.c \
-	$(srcdir)/../../gdbsupport/job-control.c \
+	$(srcdir)/../gdbsupport/job-control.c \
-	$(srcdir)/../../gdbsupport/gdb-dlfcn.c \
+	$(srcdir)/../gdbsupport/gdb-dlfcn.c \
-	$(srcdir)/../../gdbsupport/gdb_tilde_expand.c \
+	$(srcdir)/../gdbsupport/gdb_tilde_expand.c \
-	$(srcdir)/../../gdbsupport/gdb_vecs.c \
+	$(srcdir)/../gdbsupport/gdb_vecs.c \
-	$(srcdir)/../../gdbsupport/gdb_wait.c \
+	$(srcdir)/../gdbsupport/gdb_wait.c \
-	$(srcdir)/../../gdbsupport/netstuff.c \
+	$(srcdir)/../gdbsupport/netstuff.c \
-	$(srcdir)/../../gdbsupport/new-op.c \
+	$(srcdir)/../gdbsupport/new-op.c \
-	$(srcdir)/../../gdbsupport/pathstuff.c \
+	$(srcdir)/../gdbsupport/pathstuff.c \
-	$(srcdir)/../../gdbsupport/print-utils.c \
+	$(srcdir)/../gdbsupport/print-utils.c \
-	$(srcdir)/../../gdbsupport/ptid.c \
+	$(srcdir)/../gdbsupport/ptid.c \
-	$(srcdir)/../../gdbsupport/rsp-low.c \
+	$(srcdir)/../gdbsupport/rsp-low.c \
-	$(srcdir)/../../gdbsupport/safe-strerror.c \
+	$(srcdir)/../gdbsupport/safe-strerror.c \
-	$(srcdir)/../../gdbsupport/tdesc.c \
+	$(srcdir)/../gdbsupport/tdesc.c \
-	$(srcdir)/../../gdbsupport/xml-utils.c \
+	$(srcdir)/../gdbsupport/xml-utils.c \
-	$(srcdir)/../nat/aarch64-sve-linux-ptrace.c \
+	$(srcdir)/../gdb/nat/aarch64-sve-linux-ptrace.c \
-	$(srcdir)/../nat/linux-btrace.c \
+	$(srcdir)/../gdb/nat/linux-btrace.c \
-	$(srcdir)/../nat/linux-namespaces.c \
+	$(srcdir)/../gdb/nat/linux-namespaces.c \
-	$(srcdir)/../nat/linux-osdata.c \
+	$(srcdir)/../gdb/nat/linux-osdata.c \
-	$(srcdir)/../nat/linux-personality.c \
+	$(srcdir)/../gdb/nat/linux-personality.c \
-	$(srcdir)/../nat/mips-linux-watch.c \
+	$(srcdir)/../gdb/nat/mips-linux-watch.c \
-	$(srcdir)/../nat/ppc-linux.c \
+	$(srcdir)/../gdb/nat/ppc-linux.c \
-	$(srcdir)/../nat/fork-inferior.c \
+	$(srcdir)/../gdb/nat/fork-inferior.c \
-	$(srcdir)/../target/waitstatus.c
+	$(srcdir)/../gdb/target/waitstatus.c
 
 DEPFILES = @GDBSERVER_DEPFILES@
 
@@ -322,7 +322,7 @@ XM_CLIBS = @LIBS@
 CDEPS = $(srcdir)/proc-service.list
 
 # XML files to compile in to gdbserver, if any.
-XML_DIR = $(srcdir)/../features
+XML_DIR = $(srcdir)/../gdb/features
 XML_FILES = @srv_xmlfiles@
 XML_BUILTIN = @srv_xmlbuiltin@
 
@@ -388,10 +388,10 @@ install-only:
 	n=`echo gdbserver | sed '$(program_transform_name)'`; \
 	if [ x$$n = x ]; then n=gdbserver; else true; fi; \
 	if [ x"$(IPA_DEPFILES)" != x ]; then \
-		$(SHELL) $(srcdir)/../../mkinstalldirs $(DESTDIR)$(libdir); \
+		$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(libdir); \
 		$(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $(IPA_LIB) $(DESTDIR)$(libdir)/$(IPA_LIB); \
 	fi; \
-	$(SHELL) $(srcdir)/../../mkinstalldirs $(DESTDIR)$(bindir); \
+	$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(bindir); \
 	$(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) gdbserver$(EXEEXT) $(DESTDIR)$(bindir)/$$n$(EXEEXT)
 	# Note that we run install and not install-only, as the latter
 	# is not part of GNU standards and in particular not provided
@@ -522,14 +522,14 @@ stamp-h: config.in config.status
 Makefile: Makefile.in config.status
 	$(SHELL) ./config.status $@
 
-$(GNULIB_BUILDDIR)/Makefile: $(srcdir)/../../gnulib/Makefile.in config.status
+$(GNULIB_BUILDDIR)/Makefile: $(srcdir)/../gnulib/Makefile.in config.status
 	  @cd $(GNULIB_BUILDDIR); CONFIG_FILES="Makefile" \
 	  CONFIG_COMMANDS="depfiles" \
 	  CONFIG_HEADERS= \
 	  CONFIG_LINKS= \
 	  $(SHELL) config.status
 
-config.status: configure configure.srv $(srcdir)/../../bfd/development.sh
+config.status: configure configure.srv $(srcdir)/../bfd/development.sh
 	$(SHELL) ./config.status --recheck
 
 # automatic rebuilding in automake-generated Makefiles requires
@@ -541,8 +541,8 @@ am--refresh:
 
 force:
 
-version-generated.c: Makefile $(srcdir)/../version.in $(srcdir)/../../bfd/version.h $(srcdir)/../../gdbsupport/create-version.sh
+version-generated.c: Makefile $(srcdir)/../gdb/version.in $(srcdir)/../bfd/version.h $(srcdir)/../gdbsupport/create-version.sh
-	$(ECHO_GEN) $(SHELL) $(srcdir)/../../gdbsupport/create-version.sh $(srcdir)/.. \
+	$(ECHO_GEN) $(SHELL) $(srcdir)/../gdbsupport/create-version.sh $(srcdir)/../gdb \
 		$(host_alias) $(target_alias) $@
 
 xml-builtin-generated.c: stamp-xml; @true
@@ -550,7 +550,7 @@ stamp-xml: $(XML_DIR)/feature_to_c.sh Makefile $(XML_FILES)
 	$(SILENCE) rm -f xml-builtin.tmp
 	$(ECHO_GEN_XML_BUILTIN_GENERATED) $(SHELL) $(XML_DIR)/feature_to_c.sh \
 		xml-builtin.tmp $(XML_FILES)
-	$(SILENCE) $(SHELL) $(srcdir)/../../move-if-change xml-builtin.tmp xml-builtin-generated.c
+	$(SILENCE) $(SHELL) $(srcdir)/../move-if-change xml-builtin.tmp xml-builtin-generated.c
 	$(SILENCE) echo stamp > stamp-xml
 
 .PRECIOUS: xml-builtin.c
@@ -566,7 +566,7 @@ stamp-xml: $(XML_DIR)/feature_to_c.sh Makefile $(XML_FILES)
 # will remove them.
 MAKEOVERRIDES =
 
-regdat_sh = $(srcdir)/../regformats/regdat.sh
+regdat_sh = $(srcdir)/../gdb/regformats/regdat.sh
 
 UST_CFLAGS = $(ustinc) -DCONFIG_UST_GDB_INTEGRATION
 
@@ -596,11 +596,11 @@ ax.o: ax.c
 
 # Rules for objects that go in the in-process agent.
 
-arch/%-ipa.o: ../arch/%.c
+arch/%-ipa.o: ../gdb/arch/%.c
 	$(IPAGENT_COMPILE) $<
 	$(POSTCOMPILE)
 
-gdbsupport/%-ipa.o: ../../gdbsupport/%.c
+gdbsupport/%-ipa.o: ../gdbsupport/%.c
 	$(IPAGENT_COMPILE) $<
 	$(POSTCOMPILE)
 
@@ -612,7 +612,7 @@ gdbsupport/%-ipa.o: ../../gdbsupport/%.c
 	$(IPAGENT_COMPILE) $<
 	$(POSTCOMPILE)
 
-%-ipa.o: ../%.c
+%-ipa.o: ../gdb/%.c
 	$(IPAGENT_COMPILE) $<
 	$(POSTCOMPILE)
 
@@ -629,11 +629,11 @@ gdbsupport/%-ipa.o: ../../gdbsupport/%.c
 
 # Rules for objects that go in the gdbserver binary.
 
-arch/%.o: ../arch/%.c
+arch/%.o: ../gdb/arch/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
-gdbsupport/%.o: ../../gdbsupport/%.c
+gdbsupport/%.o: ../gdbsupport/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
@@ -645,28 +645,28 @@ gdbsupport/%.o: ../../gdbsupport/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
-nat/%.o: ../nat/%.c
+nat/%.o: ../gdb/nat/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
-target/%.o: ../target/%.c
+target/%.o: ../gdb/target/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
-%.o: ../%.c
+%.o: ../gdb/%.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
 
 # Rules for register format descriptions.  Suffix destination files with
 # -generated to identify and clean them easily.
 
-%-generated.c: ../regformats/%.dat $(regdat_sh)
+%-generated.c: ../gdb/regformats/%.dat $(regdat_sh)
 	$(ECHO_REGDAT) $(SHELL) $(regdat_sh) $< $@
 
-%-generated.c: ../regformats/arm/%.dat $(regdat_sh)
+%-generated.c: ../gdb/regformats/arm/%.dat $(regdat_sh)
 	$(ECHO_REGDAT) $(SHELL) $(regdat_sh) $< $@
 
-%-generated.c: ../regformats/rs6000/%.dat $(regdat_sh)
+%-generated.c: ../gdb/regformats/rs6000/%.dat $(regdat_sh)
 	$(ECHO_REGDAT) $(SHELL) $(regdat_sh) $< $@
 
 #
@@ -711,7 +711,7 @@ all_deps_files = $(foreach dep,$(patsubst %.o,%.Po,$(all_object_files)),\
 -include $(all_deps_files)
 
 # Disable implicit make rules.
-include $(srcdir)/../disable-implicit-rules.mk
+include $(srcdir)/../gdb/disable-implicit-rules.mk
 
 # Do not delete intermediate files (e.g. *-generated.c).
 .SECONDARY:

gdbserver/README

@@ -100,27 +100,24 @@ The supported targets as of November 2006 are:
 	spu*-*-*
 	x86_64-*-linux*
 
-Configuring GDBserver you should specify the same machine for host and
+Building GDBserver for your host is very straightforward.  If you build
-target (which are the machine that GDBserver is going to run on.  This
+GDB natively on a host which GDBserver supports, it will be built
-is not the same as the machine that GDB is going to run on; building
-GDBserver automatically as part of building a whole tree of tools does
-not currently work if cross-compilation is involved (we don't get the
-right CC in the Makefile, to start with)).
-
-Building GDBserver for your target is very straightforward.  If you build
-GDB natively on a target which GDBserver supports, it will be built
 automatically when you build GDB.  You can also build just GDBserver:
 
 	% mkdir obj
 	% cd obj
-	% path-to-gdbserver-sources/configure
+	% path-to-toplevel-sources/configure --disable-gdb
-	% make
+	% make all-gdbserver
+
+(If you have a combined binutils+gdb tree, you may want to also
+disable other directories when configuring, e.g., binutils, gas, gold,
+gprof, and ld.)
 
 If you prefer to cross-compile to your target, then you can also build
 GDBserver that way.  In a Bourne shell, for example:
 
 	% export CC=your-cross-compiler
-	% path-to-gdbserver-sources/configure your-target-name
+	% path-to-topevel-sources/configure your-target-name --disable-gdb
 	% make
 
 Using GDBreplay:

gdbserver/acinclude.m4

@@ -1,42 +1,42 @@
 dnl gdb/gdbserver/configure.in uses BFD_HAVE_SYS_PROCFS_TYPE.
-m4_include(../../bfd/bfd.m4)
+m4_include(../bfd/bfd.m4)
 
-m4_include(../acx_configure_dir.m4)
+m4_include(../gdb/acx_configure_dir.m4)
 
 # This gets AM_GDB_WARNINGS.
-m4_include(../warning.m4)
+m4_include(../gdb/warning.m4)
 
 dnl This gets autoconf bugfixes
-m4_include(../../config/override.m4)
+m4_include(../config/override.m4)
 
 dnl For ACX_PKGVERSION and ACX_BUGURL.
-m4_include(../../config/acx.m4)
+m4_include(../config/acx.m4)
 
-m4_include(../../config/depstand.m4)
+m4_include(../config/depstand.m4)
-m4_include(../../config/lead-dot.m4)
+m4_include(../config/lead-dot.m4)
 
 dnl Needed for common.m4
 dnl For AC_LIB_HAVE_LINKFLAGS.
-m4_include(../../config/lib-ld.m4)
+m4_include(../config/lib-ld.m4)
-m4_include(../../config/lib-prefix.m4)
+m4_include(../config/lib-prefix.m4)
-m4_include(../../config/lib-link.m4)
+m4_include(../config/lib-link.m4)
 dnl codeset.m4 is needed for common.m4, but not for
 dnl anything else in gdbserver.
-m4_include(../../config/codeset.m4)
+m4_include(../config/codeset.m4)
-m4_include(../../gdbsupport/common.m4)
+m4_include(../gdbsupport/common.m4)
 
 dnl For libiberty_INIT.
-m4_include(../libiberty.m4)
+m4_include(../gdb/libiberty.m4)
 
 dnl For GDB_AC_PTRACE.
-m4_include(../ptrace.m4)
+m4_include(../gdb/ptrace.m4)
 
-m4_include(../ax_cxx_compile_stdcxx.m4)
+m4_include(../gdb/ax_cxx_compile_stdcxx.m4)
 
 dnl For GDB_AC_SELFTEST.
-m4_include(../selftest.m4)
+m4_include(../gdb/selftest.m4)
 
-m4_include([../../config/ax_pthread.m4])
+m4_include([../config/ax_pthread.m4])
 
 dnl Check for existence of a type $1 in libthread_db.h
 dnl Based on BFD_HAVE_SYS_PROCFS_TYPE in bfd/bfd.m4.

gdbserver/configure

@@ -6072,7 +6072,7 @@ fi
 
 
 # Set the 'development' global.
-. $srcdir/../../bfd/development.sh
+. $srcdir/../bfd/development.sh
 
 
 # Check whether we will enable the inclusion of unit tests when
@@ -6255,7 +6255,7 @@ fi
 # "gnulib", to avoid the problem of both GDB and GDBserver wanting to
 # build it in the same directory, when building in the source dir.
 
-  in_src="../../gnulib"
+  in_src="../gnulib"
   in_build="build-gnulib-gdbserver"
   in_extra_args="$gnulib_extra_configure_args"
 
@@ -6358,7 +6358,7 @@ $as_echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cach
 
 
 
-  in_src="../../libiberty"
+  in_src="../libiberty"
   in_build="build-libiberty-gdbserver"
   in_extra_args=
 

gdbserver/configure.ac

@@ -44,7 +44,7 @@ AX_CXX_COMPILE_STDCXX(11, , mandatory)
 AC_HEADER_STDC
 
 # Set the 'development' global.
-. $srcdir/../../bfd/development.sh
+. $srcdir/../bfd/development.sh
 
 GDB_AC_SELFTEST([
   srv_selftest_objs="gdbsupport/selftest.o"
@@ -80,10 +80,10 @@ fi
 # gdbserver/.  We need to build gnulib under some other directory not
 # "gnulib", to avoid the problem of both GDB and GDBserver wanting to
 # build it in the same directory, when building in the source dir.
-ACX_CONFIGURE_DIR(["../../gnulib"], ["build-gnulib-gdbserver"],
+ACX_CONFIGURE_DIR(["../gnulib"], ["build-gnulib-gdbserver"],
                   ["$gnulib_extra_configure_args"])
 
-ACX_CONFIGURE_DIR(["../../libiberty"], ["build-libiberty-gdbserver"])
+ACX_CONFIGURE_DIR(["../libiberty"], ["build-libiberty-gdbserver"])
 
 AC_CHECK_HEADERS(termios.h sys/reg.h string.h dnl
 		 sys/procfs.h linux/elf.h dnl

gdbserver/configure.srv

@@ -1,6 +1,8 @@
 # Mappings from configuration triplets to gdbserver build options.
 # This is invoked from the autoconf-generated configure script, to
 # produce the appropriate Makefile substitutions.
+# It is also sourced by the top level configure script, to determine
+# whether gdbserver is supported on a given host.
 
 # This file sets the following shell variables:
 #   srv_regobj		The register protocol appropriate for this target.
@@ -12,6 +14,7 @@
 #			gdbserver in this configuration.
 #   ipa_obj		Any other target-specific modules appropriate
 #			for this target's in-process agent.
+#   UNSUPPORTED         Set to 1 if the host is unsupported.
 #
 # In addition, on GNU/Linux the following shell variables will be set:
 #   srv_linux_regsets	Set to "yes" if ptrace(PTRACE_GETREGS) and friends
@@ -30,9 +33,9 @@ ipa_ppc_linux_regobj="powerpc-32l-ipa.o powerpc-altivec32l-ipa.o powerpc-vsx32l-
 # these files over and over again.
 srv_linux_obj="linux-low.o nat/linux-osdata.o nat/linux-procfs.o nat/linux-ptrace.o nat/linux-waitpid.o nat/linux-personality.o nat/linux-namespaces.o fork-child.o nat/fork-inferior.o"
 
-# Input is taken from the "${target}" variable.
+# Input is taken from the "${host}" variable.
 
-case "${target}" in
+case "${host}" in
   aarch64*-*-linux*)	srv_tgtobj="linux-aarch64-low.o"
 			srv_tgtobj="$srv_tgtobj nat/aarch64-linux-hw-point.o"
 			srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
@@ -396,7 +399,8 @@ case "${target}" in
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
-  *)			echo "Error: target not supported by gdbserver."
+  *)
-			exit 1
+			# Who are you?
+			UNSUPPORTED=1
 			;;
 esac