sim: rewrite SIM_AC_OPTION_HARDWARE a bit to simplify things

There's no need to put the majority of the logic into the 3rd arg of the
AC_ARG_ENABLE.  Coupled with the lack of indentation, it makes it hard to
follow, error prone to update, and duplicates code (with the 4th arg).

So pull the logic out of the 3rd arg and outside of the AC_ARG_ENABLE
macro.  This allows us to gut the 4th arg entirely, merge with the code
that followed the macro, and fix bugs related to the new dv-sockser in
the process.

Hopefully building the various sims with the default sim-hardware
settings, as well as with explicit --{dis,en}able-sim-hardware flags,
should all just work now.

1 files changed, 26 insertions, 31 deletions

diff --git a/sim/iq2000/configure b/sim/iq2000/configure
index 7eda691..34aa992 100755
--- a/sim/iq2000/configure
+++ b/sim/iq2000/configure
@@ -1419,7 +1419,8 @@ Optional Features:
   --enable-sim-environment=environment	Specify mixed, user, virtual or operating environment.
   --enable-sim-inline=inlines		Specify which functions should be inlined.
   --enable-cgen-maint=DIR    build cgen generated files
-  --enable-sim-hardware=LIST		Specify the hardware to be included in the build.
+  --enable-sim-hardware=LIST
+                          Specify the hardware to be included in the build.
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -12276,7 +12277,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12279 "configure"
+#line 12280 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12382,7 +12383,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12385 "configure"
+#line 12386 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13339,30 +13340,40 @@ fi
 
 
 if test x"always" != x"no"; then
-  sim_hw_p=yes
+  enable_sim_hardware=yes
 else
-  sim_hw_p=no
+  enable_sim_hardware=no
 fi
+
 if test """"; then
   hardware=""""
 else
   hardware="cfi core pal glue"
 fi
 hardware="$hardware """
+
 sim_hw_cflags="-DWITH_HW=1"
 sim_hw="$hardware"
 sim_hw_objs="\$(SIM_COMMON_HW_OBJS) `echo $sim_hw | sed -e 's/\([^ ][^ ]*\)/dv-\1.o/g'`"
+
 # Check whether --enable-sim-hardware was given.
 if test "${enable_sim_hardware+set}" = set; then :
   enableval=$enable_sim_hardware;
-case "${enableval}" in
-  yes)	sim_hw_p=yes;;
-  no)	sim_hw_p=no;;
+fi
+
+case ${enable_sim_hardware} in
+  yes)  sim_hw_p=yes;;
+  no)   sim_hw_p=no;;
   ,*)   sim_hw_p=yes; hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
   *,)   sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
-  *)	sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
+  *)    sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
 esac
+
 if test "$sim_hw_p" != yes; then
+  if test "always" = "always"; then
+    as_fn_error "Sorry, but this simulator requires that hardware support
+be enabled. Please configure without --disable-hw-support." "$LINENO" 5
+  fi
   sim_hw_objs=
   sim_hw_cflags="-DWITH_HW=0"
   sim_hw=
@@ -13390,28 +13401,11 @@ _ACEOF
        ;;
   esac
 
-fi
-if test x"$silent" != x"yes" && test "$sim_hw_p" = "yes"; then
-  echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
-fi
-else
-
-if test "$sim_hw_p" != yes; then
-  if test "always" = "always"; then
-    as_fn_error "Sorry, but this simulator requires that hardware support
-be enabled. Please configure without --disable-hw-support." "$LINENO" 5
+  if test x"$silent" != x"yes"; then
+    echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
   fi
-  sim_hw_objs=
-  sim_hw_cflags="-DWITH_HW=0"
-  sim_hw=
-fi
-if test x"$silent" != x"yes"; then
-  echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
-fi
-fi
-
-case " $hardware " in
-  *" cfi "*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking for log2 in -lm" >&5
+    case " $hardware " in
+    *" cfi "*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking for log2 in -lm" >&5
 $as_echo_n "checking for log2 in -lm... " >&6; }
 if test "${ac_cv_lib_m_log2+set}" = set; then :
   $as_echo_n "(cached) " >&6
@@ -13456,7 +13450,8 @@ _ACEOF
 
 fi
 ;;
-esac
+  esac
+fi
 
 
 if test -z "$SIM_DV_SOCKSER_O"; then