gdb/gdbserver: switch to AC_CONFIG_MACRO_DIRS

These dirs don't use automake, so use AC_CONFIG_MACRO_DIRS to specify
../config as a search dir for m4 macros.  This allows removal of a lot
of hand-written m4_include's from acinclude.m4 files, and simplifies
use of `aclocal` or `autoreconf` as manual -I is not needed.

5 files changed, 24 insertions, 19 deletions

diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index 9f4fcf8..c2ff85e 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,3 +1,10 @@
+2021-06-19  Mike Frysinger  <vapier@gentoo.org>
+
+	* acinclude.m4: Delete most m4_include's of ../config files.
+	* configure.ac: Delete m4_include call and call AC_CONFIG_MACRO_DIR.
+	* aclocal.m4: Regenerate.
+	* configure: Regenerate.
+
 2021-06-14  Mike Frysinger  <vapier@gentoo.org>
 
 	* Makefile.in (GNULIB_BUILDDIR): Rename to ...
diff --git a/gdbserver/acinclude.m4 b/gdbserver/acinclude.m4
index e18ee99..d68e318 100644
--- a/gdbserver/acinclude.m4
+++ b/gdbserver/acinclude.m4
@@ -1,23 +1,15 @@
+dnl NB: When possible, try to avoid explicit includes of ../config/ files.
+dnl They're normally found by aclocal automatically and recorded in aclocal.m4.
+dnl However, some are kept here explicitly to silence harmless warnings from
+dnl aclocal when it finds AM_xxx macros via local search paths instead of
+dnl system search paths.
+
 dnl gdb/gdbserver/configure.in uses BFD_HAVE_SYS_PROCFS_TYPE.
 m4_include(../bfd/bfd.m4)
 
 dnl This gets AM_GDB_WARNINGS.
 m4_include(../gdbsupport/warning.m4)
 
-dnl This gets autoconf bugfixes
-m4_include(../config/override.m4)
-
-dnl For ACX_PKGVERSION and ACX_BUGURL.
-m4_include(../config/acx.m4)
-
-m4_include(../config/depstand.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-prefix.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)
@@ -34,11 +26,6 @@ m4_include(../gdb/ax_cxx_compile_stdcxx.m4)
 dnl For GDB_AC_SELFTEST.
 m4_include(../gdbsupport/selftest.m4)
 
-m4_include([../config/ax_pthread.m4])
-
-dnl For ZW_GNU_GETTEXT_SISTER_DIR.
-m4_include(../config/gettext-sister.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.
 
diff --git a/gdbserver/aclocal.m4 b/gdbserver/aclocal.m4
index 110b416..bceb92f 100644
--- a/gdbserver/aclocal.m4
+++ b/gdbserver/aclocal.m4
@@ -199,4 +199,13 @@ AC_DEFUN([_AM_SUBST_NOTMAKE])
 # Public sister of _AM_SUBST_NOTMAKE.
 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 
+m4_include([../config/acx.m4])
+m4_include([../config/ax_pthread.m4])
+m4_include([../config/depstand.m4])
+m4_include([../config/gettext-sister.m4])
+m4_include([../config/lead-dot.m4])
+m4_include([../config/lib-ld.m4])
+m4_include([../config/lib-link.m4])
+m4_include([../config/lib-prefix.m4])
+m4_include([../config/override.m4])
 m4_include([acinclude.m4])
diff --git a/gdbserver/configure b/gdbserver/configure
index aab72c0..b9d4653 100755
--- a/gdbserver/configure
+++ b/gdbserver/configure
@@ -2714,6 +2714,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+
 ac_config_headers="$ac_config_headers config.h:config.in"
 
 
diff --git a/gdbserver/configure.ac b/gdbserver/configure.ac
index 5ec222d..afac183 100644
--- a/gdbserver/configure.ac
+++ b/gdbserver/configure.ac
@@ -19,6 +19,7 @@ dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
 dnl Process this file with autoconf to produce a configure script.
 
 AC_INIT
+AC_CONFIG_MACRO_DIRS([../config])
 AC_CONFIG_SRCDIR([server.cc])
 AC_CONFIG_HEADERS(config.h:config.in, [echo > stamp-h])