LEX for rml2sig

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@980 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: levsa

configure.in

@@ -13,7 +13,7 @@ dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_MAKE_SET
-
+AC_PROG_LEX
 
 dnl check for environment variables
 
@@ -127,7 +127,8 @@ AC_C_CONST
 AC_TYPE_SIZE_T
 
 dnl Checks for library functions.
-AC_CHECK_FUNCS(strdup strerror)
+AC_FUNC_VPRINTF
+AC_CHECK_FUNCS(getcwd select socket strdup strerror)
 
 AC_OUTPUT(Makefile modeq/ast/Makefile modelica_parser/test/parser/Makefile modelica_parser/examples/walker/Makefile mosh/src/Makefile modeq/Makefile modelica_parser/examples/mosh/Makefile modelica_parser/examples/class2dot/Makefile  modeq/absyn_builder/Makefile modelica_parser/test/lexer/Makefile modeq/test_codegen/Makefile modeq/runtime/Makefile modelica_parser/src/Makefile)