build: Fix autoconf variable names for tools found by `AC_PATH_TOOL`

See the `AC_PATH_TOOL` macro implementation.

configure.ac

@@ -2049,5 +2049,6 @@ echo "  CPPFLAGS        = $DEBUG_CPPFLAGS $HARDENED_CPPFLAGS $CORE_CPPFLAGS $CPP
 echo "  CXX             = $CXX"
 echo "  CXXFLAGS        = $LTO_CXXFLAGS $DEBUG_CXXFLAGS $HARDENED_CXXFLAGS $WARN_CXXFLAGS $NOWARN_CXXFLAGS $ERROR_CXXFLAGS $GPROF_CXXFLAGS $CORE_CXXFLAGS $CXXFLAGS"
 echo "  LDFLAGS         = $LTO_LDFLAGS $PTHREAD_LIBS $HARDENED_LDFLAGS $GPROF_LDFLAGS $CORE_LDFLAGS $LDFLAGS"
+echo "  AR              = $AR"
 echo "  ARFLAGS         = $ARFLAGS"
 echo

depends/config.site.in

@@ -105,7 +105,7 @@ PYTHONPATH="${depends_prefix}/native/lib/python3/dist-packages${PYTHONPATH:+${PA
 
 if test -n "@AR@"; then
   AR="@AR@"
-  ac_cv_path_ac_pt_AR="${AR}"
+  ac_cv_path_AR="${AR}"
 fi
 
 if test -n "@RANLIB@"; then
@@ -126,17 +126,17 @@ fi
 if test "@host_os@" = darwin; then
   if test -n "@OTOOL@"; then
     OTOOL="@OTOOL@"
-    ac_cv_path_ac_pt_OTOOL="${OTOOL}"
+    ac_cv_path_OTOOL="${OTOOL}"
   fi
 
   if test -n "@INSTALL_NAME_TOOL@"; then
     INSTALL_NAME_TOOL="@INSTALL_NAME_TOOL@"
-    ac_cv_path_ac_pt_INSTALL_NAME_TOOL="${INSTALL_NAME_TOOL}"
+    ac_cv_path_INSTALL_NAME_TOOL="${INSTALL_NAME_TOOL}"
   fi
 
   if test -n "@DSYMUTIL@"; then
     DSYMUTIL="@DSYMUTIL@"
-    ac_cv_path_ac_pt_DSYMUTIL="${DSYMUTIL}"
+    ac_cv_path_DSYMUTIL="${DSYMUTIL}"
   fi
 fi