libgloss: enable maintainer mode support

Use AM_MAINTAINER_MODE so devs have to opt-in to automatic rebuilds
of autotools.  This matches what newlib (and most every other GNU
toolchain package) does with automake.

4 files changed, 76 insertions, 4 deletions

diff --git a/libgloss/Makefile.in b/libgloss/Makefile.in
index 7f1d96f..ad73711 100644
--- a/libgloss/Makefile.in
+++ b/libgloss/Makefile.in
@@ -456,6 +456,7 @@ LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
 LTLIBOBJS = @LTLIBOBJS@
 M68K_TARGET = @M68K_TARGET@
+MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
 MCORE_BSP_PREFIX = @MCORE_BSP_PREFIX@
 MIPS_BSP_LIST = @MIPS_BSP_LIST@
@@ -649,7 +650,7 @@ all: config.h
 .SUFFIXES: .S .c .dvi .o .obj .ps
 am--refresh: Makefile
 	@:
-$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am $(top_srcdir)/../multilib.am $(srcdir)/doc/Makefile.inc $(srcdir)/bfin/Makefile.inc $(srcdir)/iq2000/Makefile.inc $(srcdir)/libnosys/Makefile.inc $(srcdir)/wince/Makefile.inc $(am__configure_deps)
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/../multilib.am $(srcdir)/doc/Makefile.inc $(srcdir)/bfin/Makefile.inc $(srcdir)/iq2000/Makefile.inc $(srcdir)/libnosys/Makefile.inc $(srcdir)/wince/Makefile.inc $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
 	    *$$dep*) \
@@ -676,9 +677,9 @@ $(top_srcdir)/../multilib.am $(srcdir)/doc/Makefile.inc $(srcdir)/bfin/Makefile.
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
 	$(SHELL) ./config.status --recheck
 
-$(top_srcdir)/configure:  $(am__configure_deps)
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 	$(am__cd) $(srcdir) && $(AUTOCONF)
-$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	$(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
 $(am__aclocal_m4_deps):
 
@@ -689,7 +690,7 @@ config.h: stamp-h1
 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
 	@rm -f stamp-h1
 	cd $(top_builddir) && $(SHELL) ./config.status config.h
-$(srcdir)/config.h.in:  $(am__configure_deps) 
+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) 
 	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
 	rm -f stamp-h1
 	touch $@
diff --git a/libgloss/aclocal.m4 b/libgloss/aclocal.m4
index a74c735..b6bc2c0 100644
--- a/libgloss/aclocal.m4
+++ b/libgloss/aclocal.m4
@@ -646,6 +646,42 @@ if test x"${install_sh+set}" != xset; then
 fi
 AC_SUBST([install_sh])])
 
+# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless 'enable' is passed literally.
+# For symmetry, 'disable' may be passed as well.  Anyway, the user
+# can override the default with the --enable/--disable switch.
+AC_DEFUN([AM_MAINTAINER_MODE],
+[m4_case(m4_default([$1], [disable]),
+       [enable], [m4_define([am_maintainer_other], [disable])],
+       [disable], [m4_define([am_maintainer_other], [enable])],
+       [m4_define([am_maintainer_other], [enable])
+        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
+  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+  AC_ARG_ENABLE([maintainer-mode],
+    [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
+      am_maintainer_other[ make rules and dependencies not useful
+      (and sometimes confusing) to the casual installer])],
+    [USE_MAINTAINER_MODE=$enableval],
+    [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
+  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
+  MAINT=$MAINTAINER_MODE_TRUE
+  AC_SUBST([MAINT])dnl
+]
+)
+
 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 
 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
diff --git a/libgloss/configure b/libgloss/configure
index 8662be4..dab6ac8 100755
--- a/libgloss/configure
+++ b/libgloss/configure
@@ -642,6 +642,9 @@ HAVE_MULTISUBDIR_FALSE
 HAVE_MULTISUBDIR_TRUE
 HAVE_DOC_FALSE
 HAVE_DOC_TRUE
+MAINT
+MAINTAINER_MODE_FALSE
+MAINTAINER_MODE_TRUE
 AM_BACKSLASH
 AM_DEFAULT_VERBOSITY
 AM_DEFAULT_V
@@ -724,6 +727,7 @@ target_makefile_frag'
 ac_user_opts='
 enable_option_checking
 enable_silent_rules
+enable_maintainer_mode
 enable_dependency_tracking
 enable_multilib
 '
@@ -1361,6 +1365,9 @@ Optional Features:
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-silent-rules   less verbose build output (undo: "make V=1")
   --disable-silent-rules  verbose build output (undo: "make V=0")
+  --enable-maintainer-mode
+                          enable make rules and dependencies not useful (and
+                          sometimes confusing) to the casual installer
   --enable-dependency-tracking
                           do not reject slow dependency extractors
   --disable-dependency-tracking
@@ -2608,6 +2615,29 @@ END
   fi
 fi
 
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
+$as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; }
+    # Check whether --enable-maintainer-mode was given.
+if test "${enable_maintainer_mode+set}" = set; then :
+  enableval=$enable_maintainer_mode; USE_MAINTAINER_MODE=$enableval
+else
+  USE_MAINTAINER_MODE=no
+fi
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5
+$as_echo "$USE_MAINTAINER_MODE" >&6; }
+   if test $USE_MAINTAINER_MODE = yes; then
+  MAINTAINER_MODE_TRUE=
+  MAINTAINER_MODE_FALSE='#'
+else
+  MAINTAINER_MODE_TRUE='#'
+  MAINTAINER_MODE_FALSE=
+fi
+
+  MAINT=$MAINTAINER_MODE_TRUE
+
+
 # Check whether --enable-silent-rules was given.
 if test "${enable_silent_rules+set}" = set; then :
   enableval=$enable_silent_rules;
@@ -5361,6 +5391,10 @@ else
   am__EXEEXT_FALSE=
 fi
 
+if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
+  as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${HAVE_DOC_TRUE}" && test -z "${HAVE_DOC_FALSE}"; then
   as_fn_error $? "conditional \"HAVE_DOC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/libgloss/configure.ac b/libgloss/configure.ac
index b5a0fce..ec2a49e 100644
--- a/libgloss/configure.ac
+++ b/libgloss/configure.ac
@@ -12,6 +12,7 @@ AC_PROG_INSTALL
 
 AC_CANONICAL_SYSTEM
 AM_INIT_AUTOMAKE([foreign no-dist no-define subdir-objects 1.15.1])
+AM_MAINTAINER_MODE
 AM_SILENT_RULES(yes)
 
 if test -z "${with_multisubdir}"; then