configure checks for python3 packages, but does not install them

configure

@@ -623,7 +623,6 @@ ac_subst_vars='LTLIBOBJS
 VALGRIND
 WGET
 JQ
-PIP3
 PYTHON3
 LIBOBJS
 ac_ct_CXX
@@ -4475,69 +4474,18 @@ else
   { $as_echo "$as_me:${as_lineno-$LINENO}: omitting embedded python3 analysis engine - either python3 was not found, or --disable-python option was invoked" >&5
 $as_echo "$as_me: omitting embedded python3 analysis engine - either python3 was not found, or --disable-python option was invoked" >&6;}
 fi
-# Check whether --enable-python was given.
-if test "${enable_python+set}" = set; then :
-  enableval=$enable_python;
-else
-  # Extract the first word of "pip3", so it can be a program name with args.
-set dummy pip3; 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_PIP3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$PIP3"; then
-  ac_cv_prog_PIP3="$PIP3" # Let the user override the test.
-else
-as_save_IFS=$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_PIP3="yes"
-    $as_echo "$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
-PIP3=$ac_cv_prog_PIP3
-if test -n "$PIP3"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PIP3" >&5
-$as_echo "$PIP3" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-
-if test "x$PIP3" = xyes; then :
-  for ac_header in pcap.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "pcap.h" "ac_cv_header_pcap_h" "$ac_includes_default"
-if test "x$ac_cv_header_pcap_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PCAP_H 1
-_ACEOF
+if test "x$PYTHON3" = xyes; then :
+  if python3 ./package_test.py; then :
 
 else
-  as_fn_error $? "pcap.h not found; lipcap-dev seems not to be installed" "$LINENO" 5
-fi
-
-done
-
+  as_fn_error $? "python package(s) not found; install with 'pip3 install cython ujson pyasn', or ./configure --disable-python" "$LINENO" 5
 fi
-if test "x$PIP3" = xyes; then :
-  ac_config_commands="$ac_config_commands pip3"
-
 fi
+#AC_ARG_ENABLE(python, AS_HELP_STRING([--disable-python], [omit embedded python analysis engine]), [], [AC_CHECK_PROG(PIP3,pip3,yes)])
+#AS_IF([test "x$PIP3" = xyes],
+#    [AC_CHECK_HEADERS([pcap.h], [], [AC_MSG_ERROR([pcap.h not found; lipcap-dev seems not to be installed])])])
+#AS_IF([test "x$PIP3" = xyes],
+#    [AC_CONFIG_COMMANDS([pip3], [pip3 install cython ujson pyasn])])
 # Extract the first word of "jq", so it can be a program name with args.
 set dummy jq; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -5234,7 +5182,6 @@ esac
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
 config_files="$ac_config_files"
-config_commands="$ac_config_commands"
 
 _ACEOF
 
@@ -5259,9 +5206,6 @@ Usage: $0 [OPTION]... [TAG]...
 Configuration files:
 $config_files
 
-Configuration commands:
-$config_commands
-
 Report bugs to the package provider."
 
 _ACEOF
@@ -5378,7 +5322,6 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 for ac_config_target in $ac_config_targets
 do
   case $ac_config_target in
-    "pip3") CONFIG_COMMANDS="$CONFIG_COMMANDS pip3" ;;
     "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
     "test/Makefile") CONFIG_FILES="$CONFIG_FILES test/Makefile" ;;
 
@@ -5393,7 +5336,6 @@ done
 # bizarre bug on SunOS 4.1.3.
 if $ac_need_defaults; then
   test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
-  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
 fi
 
 # Have a temporary directory for convenience.  Make it in the build tree
@@ -5582,7 +5524,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 fi # test -n "$CONFIG_FILES"
 
 
-eval set X "  :F $CONFIG_FILES      :C $CONFIG_COMMANDS"
+eval set X "  :F $CONFIG_FILES      "
 shift
 for ac_tag
 do
@@ -5792,16 +5734,9 @@ which seems to be undefined.  Please make sure it is defined" >&2;}
  ;;
 
 
-  :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
-$as_echo "$as_me: executing $ac_file commands" >&6;}
- ;;
-  esac
-
-
-  case $ac_file$ac_mode in
-    "pip3":C) pip3 install cython dpkt ujson numpy pyasn hpack pypcap ;;
 
   esac
+
 done # for ac_tag
 
 

configure.ac

@@ -40,11 +40,16 @@ AC_ARG_ENABLE(python, AS_HELP_STRING([--disable-python], [omit embedded python a
 AS_IF([test "x$PYTHON3" = xyes],
     [AC_DEFINE([HAVE_PYTHON3], [1], [python3 is available.])],
     [AC_MSG_NOTICE([omitting embedded python3 analysis engine - either python3 was not found, or --disable-python option was invoked])])
-AC_ARG_ENABLE(python, AS_HELP_STRING([--disable-python], [omit embedded python analysis engine]), [], [AC_CHECK_PROG(PIP3,pip3,yes)])
-AS_IF([test "x$PIP3" = xyes],
-    [AC_CHECK_HEADERS([pcap.h], [], [AC_MSG_ERROR([pcap.h not found; lipcap-dev seems not to be installed])])])
-AS_IF([test "x$PIP3" = xyes],
-    [AC_CONFIG_COMMANDS([pip3], [pip3 install cython dpkt ujson numpy pyasn hpack pypcap])])
+AS_IF([test "x$PYTHON3" = xyes],
+    [AS_IF([python3 ./package_test.py],
+           [],
+           [AC_MSG_ERROR([python package(s) not found; install with 'pip3 install cython ujson pyasn', or ./configure --disable-python])])],
+    [])    
+#AC_ARG_ENABLE(python, AS_HELP_STRING([--disable-python], [omit embedded python analysis engine]), [], [AC_CHECK_PROG(PIP3,pip3,yes)])
+#AS_IF([test "x$PIP3" = xyes],
+#    [AC_CHECK_HEADERS([pcap.h], [], [AC_MSG_ERROR([pcap.h not found; lipcap-dev seems not to be installed])])])
+#AS_IF([test "x$PIP3" = xyes],
+#    [AC_CONFIG_COMMANDS([pip3], [pip3 install cython ujson pyasn])])
 AC_CHECK_PROG(JQ,jq,yes)
 AC_CHECK_PROG(WGET,wget,yes)
 AC_CHECK_PROG(VALGRIND,valgrind,yes)

package_test.py

@@ -0,0 +1,10 @@
+# run as: python3 package_test.py
+#
+# return value will be 0 (success) only if all needed packages are available
+
+import cython
+import ujson
+import pyasn
+
+print ("found python packages cython, ujson, pyasn")
+