dnl configure.ac
dnl

dnl Version information
m4_define([libdbh_file_compatibility], ["DBH_1.0"])

m4_define([version_major], [4])
m4_define([version_minor], [5])
m4_define([version_micro], [0])
m4_define([vers], [version_major().version_minor().version_micro()])


AC_INIT([dbh],[vers()],[dbh-users@lists.sourceforge.net])

AM_INIT_AUTOMAKE([dbh], [vers()])

LIBDBH_VERINFO=1:0:0
AC_SUBST(LIBDBH_VERINFO)

AM_CONFIG_HEADER([config.h])

AM_MAINTAINER_MODE

DBH_FILE_VERSION=libdbh_file_compatibility()
AC_SUBST([DBH_FILE_VERSION])

DBH_VERSION_MAJOR=version_major()
AC_SUBST([DBH_VERSION_MAJOR])

DBH_VERSION_MINOR=version_minor()
AC_SUBST([DBH_VERSION_MINOR])

DBH_VERSION_MICRO=version_micro()
AC_SUBST([DBH_VERSION_MICRO])

DBH_VERSION=vers()
AC_SUBST([DBH_VERSION])

dnl Basic Checks
dnl check for UNIX variants
AC_AIX
AC_GNU_SOURCE
AC_ISC_POSIX
AC_MINIX

dnl check for basic programs
AC_PROG_CC
AM_PROG_CC_STDC
AC_PROG_INSTALL
AC_PROG_LIBTOOL
AC_PROG_MAKE_SET
dnl check for standard header files
AC_HEADER_MAJOR
AC_HEADER_STDC
AC_CHECK_HEADERS([sys/select.h sys/types.h sys/wait.h unistd.h stdarg.h signal.h errno.h stdlib.h stdio.h string.h fcntl.h ])

AC_SYS_LARGEFILE


dnl Check for C compiler characteristics
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
AC_C_LONG_DOUBLE
AC_C_VOLATILE

AC_HEADER_DIRENT
AC_C_CONST
AC_C_INLINE
AC_HEADER_TIME

AC_TYPE_SIGNAL

AC_CHECK_FUNCS(snprintf vsnprintf strcasecmp strncasecmp)
AC_CHECK_FUNCS(memcpy memmove memset)

case xyes in
x$ac_cv_c_bigendian)
  echo "Checking integer bit order... bigendian"
  CFLAGS="$CFLAGS -DTURN"
  ;;
*)
  echo "Checking integer bit order... littleendian"
  ;;
esac

# At present, only 32 bit system. 

#AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(unsigned char *)
AC_CHECK_SIZEOF(long long)

m4_define([sizeof_file_pointer], [$ac_cv_sizeof_unsigned_char_p])

SIZEOF_FILE_POINTER=sizeof_file_pointer()
AC_SUBST(SIZEOF_FILE_POINTER)

case $ac_cv_sizeof_int in
  2)		
   CFLAGS="$CFLAGS -DI16_32"
  ;;
  4)
   I32_32=1
   AC_SUBST(I32_32)
   AC_DEFINE_UNQUOTED(I32_32,1,file size support)
   CFLAGS="$CFLAGS -DI32_32"
  ;;
  8)
   CFLAGS="$CFLAGS -DI64_32"
  ;;
esac




AC_ARG_ENABLE(dmalloc,
	[  --enable-dmalloc=PFX    [default=no] enable dmalloc library],
        [ DMALLOC_LIB=$enableval/libdmalloc.a
          AC_DEFINE(DMALLOC,"$DMALLOC",dmalloc)],
)
AC_SUBST(DMALLOC_LIB)

AC_MSG_CHECKING(if prototype for gethostname exists)
AC_EGREP_CPP(gethostname,[#include <unistd.h>],
 AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_GETHOSTNAME_PROTO,1,HAVE_GETHOSTNAME_PROTO),
 AC_MSG_RESULT(no)
)

dnl Check whether to build with debugging support
BM_DEBUG_SUPPORT

dnl Build ldflags for pkg-config file
BM_PKG_LDFLAGS(PKG)

AC_OUTPUT([
Makefile
dbh.spec
src/Makefile
src/dbh.pc
src/dbh_config.h
])

echo "CFLAGS -> $CFLAGS"
AC_MSG_RESULT(configure step complete: now do a "make" followed by a make "install")