sim: clean up C11 header includes

Since we require C11 now, we can assume many headers exist, and
clean up all of the conditional includes.  It's not like any of
this code actually accounted for the headers not existing, just
whether we could include them.

The strings.h cleanup is a little nuanced: it isn't in C11, but
every use of it in the codebase will include strings.h only if
string.h doesn't exist.  Since we now assume the C11 string.h
exists, we'll never include strings.h, so we can delete it.

4 files changed, 37 insertions, 24 deletions

diff --git a/sim/mips/ChangeLog b/sim/mips/ChangeLog
index 6197dd6..94827d5 100644
--- a/sim/mips/ChangeLog
+++ b/sim/mips/ChangeLog
@@ -1,3 +1,9 @@
+2021-01-11  Mike Frysinger  <vapier@gentoo.org>
+
+	* config.in, configure: Regenerate.
+	* interp.c: Delete HAVE_STRING_H, HAVE_STRINGS_H, HAVE_STDLIB_H,
+	and strings.h include.
+
 2021-01-09  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/mips/config.in b/sim/mips/config.in
index a146301..09537fe 100644
--- a/sim/mips/config.in
+++ b/sim/mips/config.in
@@ -22,9 +22,6 @@
 /* Define if dv-sockser is usable. */
 #undef HAVE_DV_SOCKSER
 
-/* Define to 1 if you have the <errno.h> header file. */
-#undef HAVE_ERRNO_H
-
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
@@ -145,9 +142,6 @@
 /* Define to 1 if you have the `time' function. */
 #undef HAVE_TIME
 
-/* Define to 1 if you have the <time.h> header file. */
-#undef HAVE_TIME_H
-
 /* Define to 1 if you have the `truncate' function. */
 #undef HAVE_TRUNCATE
 
diff --git a/sim/mips/configure b/sim/mips/configure
index 5692eea..4558001 100755
--- a/sim/mips/configure
+++ b/sim/mips/configure
@@ -6830,6 +6830,19 @@ test -z "$deplibs_check_method" && deplibs_check_method=unknown
 
 
 
+plugin_option=
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
@@ -6923,6 +6936,11 @@ else
 fi
 
 test -z "$AR" && AR=ar
+if test -n "$plugin_option"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR="$AR $plugin_option"
+  fi
+fi
 test -z "$AR_FLAGS" && AR_FLAGS=cru
 
 
@@ -7127,6 +7145,11 @@ else
 fi
 
 test -z "$RANLIB" && RANLIB=:
+if test -n "$plugin_option" && test "$RANLIB" != ":"; then
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB="$RANLIB $plugin_option"
+  fi
+fi
 
 
 
@@ -8963,15 +8986,13 @@ $as_echo "$LINGUAS" >&6; }
 fi
 
 # Check for common headers.
-# FIXME: Seems to me this can cause problems for i386-windows hosts.
-# At one point there were hardcoded AC_DEFINE's if ${host} = i386-*-windows*.
-for ac_header in stdlib.h string.h strings.h unistd.h time.h
+# NB: You can assume C11 headers exist.
+for ac_header in unistd.h
 do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  ac_fn_c_check_header_mongrel "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"
+if test "x$ac_cv_header_unistd_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+#define HAVE_UNISTD_H 1
 _ACEOF
 
 fi
@@ -9004,7 +9025,7 @@ fi
 
 done
 
-for ac_header in dlfcn.h errno.h sys/stat.h
+for ac_header in dlfcn.h sys/stat.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -12941,7 +12962,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12944 "configure"
+#line 12965 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13047,7 +13068,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 13050 "configure"
+#line 13071 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/sim/mips/interp.c b/sim/mips/interp.c
index 9dbac8c..49e5f71 100644
--- a/sim/mips/interp.c
+++ b/sim/mips/interp.c
@@ -41,16 +41,8 @@ code on the hardware.
 #include <ctype.h>
 #include <limits.h>
 #include <math.h>
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
 #include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
 
 #include "getopt.h"
 #include "libiberty.h"