Require GNU make

GDB has required GNU make for quite some time, and this patch applies
this approach to the sim as well.  Requiring GNU make means that
automatic dependency tracking can be simple and reliable, and it also
makes other refactorings simpler.

sim/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* m4/sim_ac_common.m4 (SIM_AC_COMMON): Don't check for make.

sim/aarch64/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/arm/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/avr/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/bfin/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/common/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* Make-common.in: Require GNU make.

sim/cr16/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/cris/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/d10v/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/erc32/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/example-synacor/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/frv/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/ft32/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/h8300/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/iq2000/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/lm32/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/m32c/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/m32r/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/m68hc11/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/mcore/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/microblaze/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/mips/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/mn10300/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/moxie/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/msp430/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/or1k/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/pru/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/riscv/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/rl78/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/rx/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/sh/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

sim/v850/ChangeLog
2021-04-22  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.

2 files changed, 6 insertions, 67 deletions

diff --git a/sim/example-synacor/ChangeLog b/sim/example-synacor/ChangeLog
index ac77bb5..3edc05d 100644
--- a/sim/example-synacor/ChangeLog
+++ b/sim/example-synacor/ChangeLog
@@ -1,3 +1,7 @@
+2021-04-22  Tom Tromey  <tom@tromey.com>
+
+	* configure: Rebuild.
+
 2021-04-21  Mike Frysinger  <vapier@gentoo.org>
 
 	* aclocal.m4: Regenerate.
diff --git a/sim/example-synacor/configure b/sim/example-synacor/configure
index 6b321e8..15116d2 100755
--- a/sim/example-synacor/configure
+++ b/sim/example-synacor/configure
@@ -681,9 +681,6 @@ INCINTL
 LIBINTL_DEP
 LIBINTL
 USE_NLS
-GMAKE_FALSE
-GMAKE_TRUE
-MAKE
 CCDEPMODE
 DEPDIR
 am__leading_dot
@@ -7216,64 +7213,6 @@ else CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
 fi
 
 
-# Check for the 'make' the user wants to use.
-for ac_prog in make
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_MAKE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$MAKE"; then
-  ac_cv_prog_MAKE="$MAKE" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_MAKE="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-MAKE=$ac_cv_prog_MAKE
-if test -n "$MAKE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAKE" >&5
-$as_echo "$MAKE" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$MAKE" && break
-done
-
-MAKE_IS_GNU=
-case "`$MAKE --version 2>&1 | sed 1q`" in
-  *GNU*)
-    MAKE_IS_GNU=yes
-    ;;
-esac
- if test "$MAKE_IS_GNU" = yes; then
-  GMAKE_TRUE=
-  GMAKE_FALSE='#'
-else
-  GMAKE_TRUE='#'
-  GMAKE_FALSE=
-fi
-
-
 ALL_LINGUAS=
 # If we haven't got the data from the intl directory,
 # assume NLS is disabled.
@@ -11250,7 +11189,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11253 "configure"
+#line 11192 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11356,7 +11295,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11359 "configure"
+#line 11298 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12234,10 +12173,6 @@ LTLIBOBJS=$ac_ltlibobjs
 
 
 
-if test -z "${GMAKE_TRUE}" && test -z "${GMAKE_FALSE}"; then
-  as_fn_error $? "conditional \"GMAKE\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${PLUGINS_TRUE}" && test -z "${PLUGINS_FALSE}"; then
   as_fn_error $? "conditional \"PLUGINS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5