acinclude.m4

dnl modify this one, edit the one in curl and copy it back here when that one
dnl is changed.

AC_DEFUN([CURL_CC_DEBUG_OPTS],
[
    if test "$GCC" = "yes"; then

       dnl figure out gcc version!
       AC_MSG_CHECKING([gcc version])
       gccver=`$CC -dumpversion`
       num1=`echo $gccver | cut -d . -f1`
       num2=`echo $gccver | cut -d . -f2`
       gccnum=`(expr $num1 "*" 100 + $num2) 2>/dev/null`
       AC_MSG_RESULT($gccver)

       AC_MSG_CHECKING([if this is icc in disguise])
       AC_EGREP_CPP([^__INTEL_COMPILER], [__INTEL_COMPILER],
         dnl action if the text is found, this it has not been replaced by the
         dnl cpp
         ICC="no"
         AC_MSG_RESULT([no]),
         dnl the text was not found, it was replaced by the cpp
         ICC="yes"
         AC_MSG_RESULT([yes])
       )

       if test "$ICC" = "yes"; then
         dnl this is icc, not gcc.

         dnl ICC warnings we ignore:
         dnl * 279 warns on static conditions in while expressions
         dnl * 269 warns on our "%Od" printf formatters for curl_off_t output:
         dnl   "invalid format string conversion"

         WARN="-wd279,269"

         if test "$gccnum" -gt "600"; then
            dnl icc 6.0 and older doesn't have the -Wall flag
            WARN="-Wall $WARN"
         fi
       else dnl $ICC = yes
         dnl 
         WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare"

         dnl -Wcast-align is a bit too annoying ;-)

         if test "$gccnum" -ge "296"; then
           dnl gcc 2.96 or later
           WARN="$WARN -Wfloat-equal"

           if test "$gccnum" -gt "296"; then
             dnl this option does not exist in 2.96
             WARN="$WARN -Wno-format-nonliteral"
           fi

           dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on
           dnl on i686-Linux as it gives us heaps with false positives
           if test "$gccnum" -ge "303"; then
             dnl gcc 3.3 and later
             WARN="$WARN -Wendif-labels -Wstrict-prototypes"
           fi
         fi

         for flag in $CPPFLAGS; do
           case "$flag" in
            -I*)
              dnl include path
              add=`echo $flag | sed 's/^-I/-isystem /g'`
              WARN="$WARN $add"
              ;;
           esac
         done

       fi dnl $ICC = no

       CFLAGS="$CFLAGS $WARN"

    fi dnl $GCC = yes

    dnl strip off optimizer flags
    NEWFLAGS=""
    for flag in $CFLAGS; do
      case "$flag" in
      -O*)
        dnl echo "cut off $flag"
        ;;
      *)
        NEWFLAGS="$NEWFLAGS $flag"
        ;;
      esac
    done
    CFLAGS=$NEWFLAGS

]) dnl end of AC_DEFUN()


dnl This macro determines if the specified struct exists in the specified file
dnl Syntax:
dnl CARES_CHECK_STRUCT(headers, struct name, if found, [if not found])

AC_DEFUN([CARES_CHECK_STRUCT], [
  AC_MSG_CHECKING([for struct $2])
  AC_TRY_COMPILE([$1], 
    [
      struct $2 struct_instance;
    ], ac_struct="yes", ac_found="no")
  if test "$ac_struct" = "yes" ; then
    AC_MSG_RESULT(yes)
    $3
  else
    AC_MSG_RESULT(no)
    $4
  fi
])

dnl This macro determines if the specified constant exists in the specified file
dnl Syntax:
dnl CARES_CHECK_CONSTANT(headers, constant name, if found, [if not found])

AC_DEFUN([CARES_CHECK_CONSTANT], [
  AC_MSG_CHECKING([for $2])
  AC_EGREP_CPP(VARIABLEWASDEFINED,
   [
      $1

      #ifdef $2
        VARIABLEWASDEFINED
      #else
        NJET
      #endif
    ], ac_constant="yes", ac_constant="no"
  )
  if test "$ac_constant" = "yes" ; then
    AC_MSG_RESULT(yes)
    $3
  else
    AC_MSG_RESULT(no)
    $4
  fi
])


dnl This macro determines how many parameters getservbyport_r takes
AC_DEFUN([CARES_CHECK_GETSERVBYPORT_R], [
  AC_MSG_CHECKING([how many arguments getservbyport_r takes])
  AC_TRY_LINK(
    [#include <netdb.h>],
    [
      int p1, p5;
      char *p2, p4[4096];
      struct servent *p3, *p6;
      getservbyport_r(p1, p2, p3, p4, p5, &p6);
    ], ac_func_getservbyport_r=6,
    [AC_TRY_LINK(
      [#include <netdb.h>],
      [
        int p1, p5;
        char *p2, p4[4096];
        struct servent *p3;
        getservbyport_r(p1, p2, p3, p4, p5);
      ], ac_func_getservbyport_r=5,
      [AC_TRY_LINK(
        [#include <netdb.h>],
        [
          int p1;
          char *p2;
          struct servent *p3;
          struct servent_data p4;
          getservbyport_r(p1, p2, p3, &p4);
        ], ac_func_getservbyport_r=4, ac_func_getservbyport_r=0
      )]
    )]
  )
if test $ac_func_getservbyport_r != "0" ; then
  AC_MSG_RESULT($ac_func_getservbyport_r)
  AC_DEFINE(HAVE_GETSERVBYPORT_R, 1, [Specifies whether getservbyport_r is present])
  AC_DEFINE_UNQUOTED(GETSERVBYPORT_R_ARGS, $ac_func_getservbyport_r, [Specifies the number of arguments to 
getservbyport_r])
  if test $ac_func_getservbyport_r = "4" ; then
   AC_DEFINE(GETSERVBYPORT_R_BUFSIZE, sizeof(struct servent_data), [Specifies the size of the buffer to pass to 
getservbyport_r])
  else
   AC_DEFINE(GETSERVBYPORT_R_BUFSIZE, 4096, [Specifies the size of the buffer to pass to getservbyport_r])
  fi
else
  AC_MSG_RESULT([not found])
fi
])

# Prevent libtool for checking how to run C++ compiler and check for other
# tools we don't want to use. We do this by m4-defining the _LT_AC_TAGCONFIG
# variable to the code to run, as by default it uses a much more complicated
# approach. The code below that is actually added seems to be used for cases
# where configure has trouble figuring out what C compiler to use but where
# the installed libtool has an idea.
#
# This function is a re-implemented version of the Paolo Bonzini fix posted to
# the c-ares mailing list by Bram Matthys on May 6 2006. My version removes
# redundant code but also adds the LTCFLAGS check that wasn't in that patch.
#
# Some code in this function was extracted from the generated configure script.
#
# CARES_CLEAR_LIBTOOL_TAGS
AC_DEFUN([CARES_CLEAR_LIBTOOL_TAGS],
  [m4_define([_LT_AC_TAGCONFIG], [
  if test -f "$ltmain"; then
    if test ! -f "${ofile}"; then
      AC_MSG_WARN([output file `$ofile' does not exist])
    fi

    if test -z "$LTCC"; then
      eval "`$SHELL ${ofile} --config | grep '^LTCC='`"
      if test -z "$LTCC"; then
        AC_MSG_WARN([output file `$ofile' does not look like a libtool
script])
      else
        AC_MSG_WARN([using `LTCC=$LTCC', extracted from `$ofile'])
      fi
    fi
    if test -z "$LTCFLAGS"; then
      eval "`$SHELL ${ofile} --config | grep '^LTCFLAGS='`"
    fi
  fi
  ])]
)