AC_INIT(myodbc.c)
AM_INIT_AUTOMAKE(myodbc,2.50.39)

myodbc_version=$VERSION

# See the libtool docs for information on how to do shared lib versions.
SHARED_LIB_VERSION=1:0:0

AM_CONFIG_HEADER(myconf.h)

AC_SUBST(myodbc_version)

AC_PROG_CC
AC_PROG_CPP

AC_PROG_LN_S

AM_ENABLE_SHARED
AM_DISABLE_STATIC

# define _UNIX_
AC_DEFINE(_UNIX_)

AM_PROG_LIBTOOL
AC_CHECK_LIB(z,compress)

AC_ARG_WITH(mysql-libs,
[  --with-mysql-libs=DIR   Look for mysql client libraries in DIR],
mysql_libs=$withval,mysql_libs="")

AC_MSG_CHECKING([for the mysql client libraries])

# two common alternate mysql_lib locations
alt_lib1="/usr/local/mysql/lib/mysql"
alt_lib2="/usr/lib/mysql"

AC_MSG_RESULT([$mysql_libs])

mysql_ok=no

if test -n "$mysql_libs"
then
  LIBS="-L$mysql_libs $LIBS"
  MYSQL_LIB_PATH="-L$mysql_libs"
fi
AC_SUBST(MYSQL_LIB_PATH)

AC_CHECK_LIB(mysqlclient,mysql_real_query,mysql_ok=yes,mysql_ok=no)
SAVE_LIBS=$LIBS

if test "x$mysql_ok" != "xyes"
then
	LIBS="-L$alt_lib1 $SAVE_LIBS"
	MYSQL_LIB_PATH="-L$alt_lib1"
	AC_SUBST(MYSQL_LIB_PATH)

	AC_CHECK_LIB(mysqlclient,mysql_real_connect,mysql_ok=yes,mysql_ok=no)
fi


if test "x$mysql_ok" != "xyes"
then
	LIBS="-L$alt_lib2 $SAVE_LIBS"
	MYSQL_LIB_PATH="-L$alt_lib2"
	AC_SUBST(MYSQL_LIB_PATH)

	AC_CHECK_LIB(mysqlclient,mysql_change_user,mysql_ok=yes,mysql_ok=no)
fi


if test "x$mysql_ok" != "xyes"
then
	AC_MSG_ERROR([Could not find libmysqlclient in '$alt_lib1' or '$alt_lib2'. Try another location.])
fi



# Check for MySQL include files

AC_ARG_WITH(mysql-includes,
[  --with-mysql-includes=DIR   Look for mysql include files in DIR],
mysql_includes=$withval,mysql_includes="")

AC_MSG_CHECKING([for mysql include files in $mysql_includes])

# two common alternate mysql_include locations
alt_inc1="/usr/local/mysql/include/mysql"
alt_inc2="/usr/include/mysql"

if test ! -f "$mysql_includes/my_config.h"
then
  if test ! -f "$alt_inc1/my_config.h"
  then
    if test ! -f "$alt_inc2/my_config.h"
    then
	AC_MSG_RESULT(no)
	AC_MSG_ERROR([Could not find the mysql include file my_config.h in '$alt_inc1' or '$alt_inc2'])
    else
	AC_MSG_RESULT(yes)
	MYSQL_INCLUDES="-I$alt_inc2"
	AC_SUBST(MYSQL_INCLUDES)
    fi
  else
      AC_MSG_RESULT(yes)
      MYSQL_INCLUDES="-I$alt_inc1"
      AC_SUBST(MYSQL_INCLUDES)
  fi
else
    AC_MSG_RESULT(yes)
    MYSQL_INCLUDES="-I$mysql_includes"
    AC_SUBST(MYSQL_INCLUDES)
fi

#check for unixODBC

use_unixODBC=no
AC_ARG_WITH(unixODBC,
[  --with-unixODBC[=DIR]   Use unixODBC located in DIR],
[use_unixODBC=yes;unixODBC="$withval"],use_unixODBC=no)

if test "x$use_unixODBC" = "xyes"
then

# default to /usr if not specified
if test "x$unixODBC" = "x"
then
	unixODBC="/usr";
fi

AC_ARG_WITH(unixODBC-includes,
[  --with-unixODBC-includes=DIR Find unixODBC headers in DIR],
unixODBC_includes="$withval",unixODBC_includes="$unixODBC/include")

AC_ARG_WITH(unixODBC-libs,
[  --with-unixODBC-libs=DIR Find unixODBC libraries in DIR],
unixODBC_libs="$withval",unixODBC_libs="$unixODBC/lib")

AC_CHECK_UNIXODBC($unixODBC_includes,$unixODBC_libs)

else

# check for iodbc

AC_ARG_WITH(iodbc,
[  --with-iodbc[=DIR]      Use iODBC located in DIR],
iodbc="$withval")

AC_ARG_WITH(iodbc-includes,
[  --with-iodbc-includes=DIR Find iODBC headers in DIR],
iodbc_includes="$withval")

AC_ARG_WITH(iodbc-libs,
[  --with-iodbc-libs=DIR   Find iODBC libraries in DIR],
iodbc_libs="$withval")

case "$iodbc" in
    yes)
       ;;
    no)
       AC_MSG_ERROR([iodbc is required - you cannot disable it])
       ;;
    *)
       if test "$iodbc_includes" = ""; then
               iodbc_includes="$iodbc/include"
       fi
       if test "$iodbc_libs" = ""; then
               iodbc_libs="$iodbc/lib"
       fi
       ;;
esac

AC_CHECK_IODBC($iodbc_includes,$iodbc_libs)

AC_ARG_WITH(odbc-ini,
[  --with-odbc-ini=PATH    Location of system odbc.ini [IODBCDIR/etc/odbc.ini]],
odbc_ini="$withval",odbc_ini="$iodbc/etc/odbc.ini")

if test "x$have_iodbcinst" != "xyes"
then
	AC_DEFINE_UNQUOTED(SYSTEM_ODBC_INI,"$odbc_ini")
fi

fi

#
# Add some extra LDFLAGS to the linking of the shared library
#

AC_ARG_WITH(ldflags,
    [  --with-ldflags=option   Extra arguments for linking. Normally -lmysqlclient],
    EXTRA_LDFLAGS="$withval",EXTRA_LDFLAGS="")
AC_SUBST(EXTRA_LDFLAGS)

# if we're working in an older odbc environment,
# we don't have the SQL* types, so we need to fall
# back to the old versions

AC_CHECK_ODBC_TYPE(SQLHENV,HENV)
AC_CHECK_ODBC_TYPE(SQLHDBC,HDBC)
AC_CHECK_ODBC_TYPE(SQLHSTMT,HSTMT)

AC_CHECK_ODBC_TYPE(SQLINTEGER,SDWORD)
AC_CHECK_ODBC_TYPE(SQLUINTEGER,UDWORD)
AC_CHECK_ODBC_TYPE(SQLSMALLINT,SWORD)
AC_CHECK_ODBC_TYPE(SQLUSMALLINT,UWORD)

AC_CHECK_ODBC_TYPE(SQLPOINTER,PTR)
AC_CHECK_ODBC_TYPE(SQLHWND,HWND)

AC_CHECK_ODBC_TYPE(SQLRETURN,RETCODE)

AC_CHECK_ODBC_TYPE(SQLCHAR,UCHAR)

AC_OUTPUT(Makefile)

if test "x$iodbc_ok" = "xyes" && test "x$have_iodbcinst" != "xyes"
then
cat <<EOF
----------------------------------------------------------------
Warning: using iODBC but libiodbcinst library not found.
Enabling workaround, which will search for mysql datasource
configuration as follows:

1. \$ODBCINI, and if not found - \$HOME/.odbc.ini (User data sources)
2. $odbc_ini (System data sources)

If you want to change (2), re-run configure using the
   --with-odbc-ini=/some/other/path/odbc.ini
option.
----------------------------------------------------------------
EOF
fi