source: rtems/cpukit/configure.ac @ 6e46fa73

## Process this file with autoconf to produce a configure script.
## 
## $Id$

AC_PREREQ(2.60)
AC_INIT([rtems-cpukit],[_RTEMS_VERSION],[rtems-bugs@rtems.com])
AC_CONFIG_SRCDIR([score])
RTEMS_TOP([..],[])

RTEMS_CANONICAL_TARGET_CPU

AM_INIT_AUTOMAKE([no-define nostdinc subdir-objects foreign 1.10])
AM_MAINTAINER_MODE

RTEMS_ENABLE_MULTILIB
RTEMS_ENABLE_MULTIPROCESSING
RTEMS_ENABLE_POSIX
RTEMS_ENABLE_ITRON
RTEMS_ENABLE_RTEMS_DEBUG
RTEMS_ENABLE_NETWORKING

RTEMS_ENV_RTEMSCPU
RTEMS_CHECK_RTEMS_DEBUG

# Is this a supported CPU?
AC_MSG_CHECKING([if cpu $RTEMS_CPU is supported])
if test -d "$srcdir/score/cpu/$RTEMS_CPU"; then
  AC_MSG_RESULT(yes)
else
  AC_MSG_ERROR(no)
fi

RTEMS_PROG_CC_FOR_TARGET([-fasm])
RTEMS_PROG_CCAS
RTEMS_CANONICALIZE_TOOLS
AM_PROG_CC_C_O
AC_PROG_RANLIB

RTEMS_CHECK_NEWLIB

AC_ARG_ENABLE([deprecated],
[AS_HELP_STRING(--enable-deprecated,allow using deprecated files)],
[case "${enable_deprecated}" in
  yes) ;;
  no) ;;
  *) enable_deprecated=no ;;
esac],[enable_deprecated=no])
AM_CONDITIONAL([DEPRECATED],[test "$enable_deprecated" = "yes"])

AS_IF([ test "$enable_deprecated" = "yes" ],[
AC_DEFINE_UNQUOTED([RTEMS_DEPRECATED_TYPES],[1],
  [whether to support deprecated types])
])

# HACK: We should use a feature-based configuration.
AS_IF([test x"${RTEMS_CPU}" = x"unix"],[
# HACK: silently accept --enable-unixlib
  test -n "${enable_unixlib}" || enable_unixlib="yes"
])

# BSD-isms, used throughout the sources
# Not really used by this configure script
# FIXME: They should be eliminated if possible.
AC_CHECK_FUNCS([strsep strcasecmp snprintf])
AC_CHECK_FUNCS([bcopy bcmp])
AC_CHECK_FUNCS([isascii fileno])

## Check if the installed toolchain has these headers
AC_CHECK_HEADER([tar.h])

## BSD-ism, should not be used in RTEMS, 
## nevertheless it still is.
AC_CHECK_HEADER([sys/errno.h],[],
  [AC_MSG_ERROR([Missing required header sys/errno.h])])

## if libc provides stdint.h, use it.
AS_IF([test x"${ac_cv_header_stdint_h}" = xyes],
[RTEMS_USES_STDINT_H=yes],
[RTEMS_USES_STDINT_H=no])

## error out if libc doesn't at least provide inttypes.h
AS_IF([test x"${ac_cv_header_inttypes_h}" != xyes],
[AC_MSG_ERROR([Required header inttypes.h not found])])

AC_CHECK_TYPES([ uint8_t,  int8_t])
AC_CHECK_TYPES([uint16_t, int16_t])
AC_CHECK_TYPES([uint32_t, int32_t])
AC_CHECK_TYPES([uint64_t, int64_t])

RTEMS_CHECK_MULTIPROCESSING
RTEMS_CHECK_POSIX_API
RTEMS_CHECK_ITRON_API
RTEMS_CHECK_NETWORKING

AS_IF([test x"${RTEMS_USE_NEWLIB}" = xyes],
[RTEMS_USES_TAR_H=yes],
[RTEMS_USES_TAR_H=$ac_cv_header_tar_h])

AS_IF([test x"${RTEMS_CPU}" = x"unix"],[
## FIXME: This check is doubtful
AS_IF([test "$HAS_MP" = "yes"],
  [RTEMS_CHECK_SYSV_UNIX])

## The code fragment below had been used in tools/cpu/unix/gensize.c.
## FIXME: 
## * The pad very likely is not necessary.
AC_CHECK_SIZEOF([CPU_CONTEXT],[],[
#include <stdio.h>
#include <setjmp.h>

typedef struct {
  jmp_buf     regs;
  int         isr_level;
  int         pad[4]; /* just in case */
} CPU_CONTEXT;
])
])

cat >>cpuopts.tmp <<\_ACEOF
/**
 * @file rtems/score/cpuopts.h
 */
/* target cpu dependent options file */
/* automatically generated -- DO NOT EDIT!! */
#ifndef _RTEMS_SCORE_CPUOPTS_H
#define _RTEMS_SCORE_CPUOPTS_H
_ACEOF

RTEMS_CPUOPT([RTEMS_DEBUG],
  [test x"${enable_rtems_debug}" = x"yes"],
  [1],
  [if RTEMS_DEBUG is enabled])

RTEMS_CPUOPT([RTEMS_ITRON_API],
  [test x"$rtems_cv_HAS_ITRON_API" = x"yes"],
  [1],
  [if itron api is supported])

RTEMS_CPUOPT([RTEMS_MULTIPROCESSING],
  [test x"$enable_multiprocessing" = xyes],
  [1],
  [if multiprocessing is enabled])

RTEMS_CPUOPT([RTEMS_NEWLIB],
  [test x"$RTEMS_USE_NEWLIB" = xyes],
  [1],
  [if using newlib])

RTEMS_CPUOPT([RTEMS_POSIX_API],
  [test x"$rtems_cv_HAS_POSIX_API" = xyes],
  [1],
  [if posix api is supported])

RTEMS_CPUOPT([RTEMS_NETWORKING],
  [test x"$rtems_cv_HAS_NETWORKING" = xyes],
  [1],
  [if networking is enabled])

RTEMS_CPUOPT([RTEMS_UNIX],
  [test x"$RTEMS_CPU" = xunix],
  [1],
  [to indicate RTEMS unix])

RTEMS_CPUOPT([RTEMS_UNIXLIB],
  [test x"${enable_unixlib}" = xyes],
  [1],
  [to indicate RTEMS using RTEMS's unixlib])

RTEMS_CPUOPT([RTEMS_USES_STDINT_H],
  [test x"${RTEMS_USES_STDINT_H}" = x"yes"],
  [1],
  [if RTEMS uses stdint.h])

RTEMS_CPUOPT([RTEMS_USES_TAR_H],
  [test x"${RTEMS_USES_TAR_H}" = x"yes"],
  [1],
  [if RTEMS uses tar.h])

RTEMS_CPUOPT([RTEMS_VERSION],
  [true],
  ["]_RTEMS_VERSION["],
  [RTEMS version string])

RTEMS_CPUOPT([SIZEOF_CPU_CONTEXT],
  [test x"$RTEMS_CPU" = x"unix"],
  [$ac_cv_sizeof_CPU_CONTEXT],
  [The size of a 'CPU_CONTEXT', as computed by sizeof])

cat >>cpuopts.tmp <<\_ACEOF

#endif /* _RTEMS_SCORE_CPUOPTS_H */
_ACEOF

AS_MKDIR_P(score/include/rtems/score)
AS_IF([test -f score/include/rtems/score/cpuopts.h],
[
  AS_IF([cmp -s score/include/rtems/score/cpuopts.h cpuopts.tmp 2>/dev/null],
  [ 
    AC_MSG_NOTICE([score/include/rtems/score/cpuopts.h is unchanged])
    rm -f cpuopts.tmp
  ],[
    AC_MSG_NOTICE([creating score/include/rtems/score/cpuopts.h])
    rm -f score/include/rtems/score/cpuopts.h
    mv cpuopts.tmp score/include/rtems/score/cpuopts.h
  ])
],[
    AC_MSG_NOTICE([creating score/include/rtems/score/cpuopts.h])
    rm -f score/include/rtems/score/cpuopts.h
    mv cpuopts.tmp score/include/rtems/score/cpuopts.h
])

AC_ENABLE_MULTILIB([Makefile],[..])

# libmisc/shell/* wants to assign file descriptors to stdio file descriptors.
AC_MSG_CHECKING([for assignable stdio])
AC_COMPILE_IFELSE(
  [AC_LANG_PROGRAM(
    [#include <stdio.h>], 
    [stdin = fopen("/tmp", "r")])],
  [HAVE_ASSIGNABLE_STDIO=yes],
  [HAVE_ASSIGNABLE_STDIO=no])
AC_MSG_RESULT([$HAVE_ASSIGNABLE_STDIO])

# libmisc/serdbg exploits weak symbols
RTEMS_CHECK_GCC_WEAK

AC_CHECK_HEADERS([sys/cdefs.h],[NEED_SYS_CDEFS_H=no],[NEED_SYS_CDEFS_H=yes])
AC_CHECK_HEADERS([sys/queue.h],[NEED_SYS_QUEUE_H=no],[NEED_SYS_QUEUE_H=yes])

# FIXME: These checks are only in here to provide
# configuration-time diagnostics and are not really used.
AC_CHECK_DECLS([_POSIX_LOGIN_NAME_MAX],,,[#include <limits.h>])
AC_CHECK_DECLS([CHAR_BIT],,,[#include <limits.h>])

## BSD-ism, excluded from POSIX, but available on most platforms
AC_CHECK_DECLS([sbrk],,,[#include <unistd.h>])

## Check if libc provides BSD's strlcpy/strlcat
AC_CHECK_FUNCS(strlcpy strlcat)


# ... far too many conditionals ...
AM_CONDITIONAL(LIBRPC,[test "$rtems_cv_HAS_NETWORKING" = "yes"])
AM_CONDITIONAL(UNIX,[test x"${RTEMS_CPU}" = x"unix"])
AM_CONDITIONAL(NEWLIB,test x"$RTEMS_USE_NEWLIB" = x"yes")

AM_CONDITIONAL(HAS_MP,test x"$enable_multiprocessing" = x"yes" )

AM_CONDITIONAL(HAS_POSIX,test x"$rtems_cv_HAS_POSIX_API" = x"yes")
AM_CONDITIONAL(LIBITRON,test x"$rtems_cv_HAS_ITRON_API" = x"yes")
AM_CONDITIONAL(LIBNETWORKING,test x"$rtems_cv_HAS_NETWORKING" = x"yes")

AM_CONDITIONAL([NEED_SYS_CDEFS_H],[test x"$NEED_SYS_CDEFS_H" = x"yes"])
AM_CONDITIONAL([NEED_SYS_QUEUE_H],[test x"$NEED_SYS_QUEUE_H" = x"yes"])

AM_CONDITIONAL([LIBSHELL],[test x"$HAVE_ASSIGNABLE_STDIO" = x"yes"])
AM_CONDITIONAL([LIBSERDBG],[test x"$rtems_cv_cc_attribute_weak" = x"yes"])

AM_CONDITIONAL([LIBDOSFS],[dnl
test x"${RTEMS_CPU}" != x"unix" \
&& test x"$ac_cv_type_uint8_t" = xyes \
&& test x"$ac_cv_type_uint16_t" = xyes])

AC_CONFIG_HEADER(config.h)

# Explicitly list all Makefiles here
AC_CONFIG_FILES([
Makefile
rtems/Makefile
sapi/Makefile
score/Makefile
score/cpu/Makefile
score/cpu/arm/Makefile
score/cpu/bfin/Makefile
score/cpu/avr/Makefile
score/cpu/c4x/Makefile
score/cpu/h8300/Makefile
score/cpu/i386/Makefile
score/cpu/m68k/Makefile
score/cpu/mips/Makefile
score/cpu/nios2/Makefile
score/cpu/powerpc/Makefile
score/cpu/sh/Makefile
score/cpu/sparc/Makefile
score/cpu/unix/Makefile
score/cpu/no_cpu/Makefile
posix/Makefile
itron/Makefile
libblock/Makefile
libfs/Makefile
libcsupport/Makefile
libnetworking/Makefile
librpc/Makefile
libmisc/Makefile
libi2c/Makefile
zlib/Makefile
httpd/Makefile
ftpd/Makefile
telnetd/Makefile
pppd/Makefile
wrapup/Makefile])

AC_CONFIG_COMMANDS([preinstall-stamp],
[test -z "$with_multisubdir" && ${MAKE} preinstall-stamp],
[MAKE=${MAKE}
with_multisubdir="$with_multisubdir"])

AC_OUTPUT