sim: switch to AC_CHECK_FUNCS_ONCE & merge a little

This avoids duplicate tests for functions between common m4, arches,
and any other sources that would trigger func tests.

Also manually delete known duplicate function tests between the m4,
bfin, and v850 ports.

1 files changed, 48 insertions, 25 deletions

diff --git a/sim/m32c/configure b/sim/m32c/configure
index 0ef2184..aa106d2 100755
--- a/sim/m32c/configure
+++ b/sim/m32c/configure
@@ -629,6 +629,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
+ac_func_list=
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 sim_reserved_bits
@@ -2281,6 +2282,16 @@ $as_echo "$as_me: creating cache $cache_file" >&6;}
   >$cache_file
 fi
 
+as_fn_append ac_func_list " __setfpucw"
+as_fn_append ac_func_list " ftruncate"
+as_fn_append ac_func_list " getrusage"
+as_fn_append ac_func_list " lstat"
+as_fn_append ac_func_list " mmap"
+as_fn_append ac_func_list " munmap"
+as_fn_append ac_func_list " posix_fallocate"
+as_fn_append ac_func_list " sigaction"
+as_fn_append ac_func_list " time"
+as_fn_append ac_func_list " truncate"
 # Check that the precious variables saved in the cache have kept the same
 # value.
 ac_cache_corrupted=false
@@ -3855,6 +3866,41 @@ rmdir .tst 2>/dev/null
 
 DEPDIR="${am__leading_dot}deps"
 
+
+
+
+  for ac_func in $ac_func_list
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 case `pwd` in
   *\ * | *\	*)
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
@@ -7301,29 +7347,6 @@ fi
 
 done
 
-for ac_func in getrusage time sigaction __setfpucw
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-for ac_func in mmap munmap lstat truncate ftruncate posix_fallocate
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_dev" "ac_cv_member_struct_stat_st_dev" "#ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -11225,7 +11248,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11228 "configure"
+#line 11251 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11331,7 +11354,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11334 "configure"
+#line 11357 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H