configure.in

dnl Process this file with autoconf to produce a configure script.
AC_INIT(src/check.c)

AC_CONFIG_HEADER(src/config.h)

dnl Checks for programs.
AC_PROG_LEX
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_YACC
AC_PROG_RANLIB

dnl Find the C preprocessor, wherever it may be on this system
AC_MSG_CHECKING(where to find the C preprocessor)
if test -x /lib/cpp
then
  CPP_LOCATION="/lib/cpp"
  AC_MSG_RESULT(/lib/cpp)
else
  if test -x /usr/ccs/lib/cpp 
  then
    CPP_LOCATION="/usr/ccs/lib/cpp"
    AC_MSG_RESULT(/usr/ccs/lib/cpp)
  else
    dnl some sort of smart /usr/lib/gcc-lib/** check would be nice
    if test -d /usr/lib/gcc-lib
    then
      foo=`find /usr/lib/gcc-lib -type f -name cpp -print |head -1`
      if -n "$foo" 
      then
        CPP_LOCATION="$foo"
        AC_MSG_RESULT("$foo")        
      else
        dnl punt
        CPP_LOCATION="cpp"
        AC_MSG_RESULT("unknown. you\'re on your own...")
      fi
    fi

  fi
fi

dnl Checks for libraries.

dnl kludge for Solaris 2.x

AC_MSG_CHECKING(for /usr/ucblib)
if test -d /usr/ucblib 
then
  LIBS="-L/usr/ucblib $LIBS"
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(unistd.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE

dnl Checks for library functions.
AC_FUNC_ALLOCA
AC_CHECK_LIB(ucb, random)
AC_CHECK_FUNCS(regcomp strcspn strdup)
AC_CHECK_FUNC(regcomp, HAVE_REGCOMP=1, [
MAKE_REGEXP='$(MAKE) -C regex'
REGEXP_LIB='../regex/libregex.a'
REGEXP_INCLUDE='-I../regex'
])

AC_SUBST(MAKE_REGEXP)
AC_SUBST(REGEXP_LIB)
AC_SUBST(REGEXP_INCLUDE)
AC_SUBST(CPP_LOCATION)

AC_OUTPUT(Makefile doc/Makefile src/Makefile regex/Makefile inst)