rtems/cpukit/configure.ac

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

AC_PREREQ([2.69])
AC_INIT([rtems-cpukit],[_RTEMS_VERSION],[https://devel.rtems.org/newticket])
AC_CONFIG_SRCDIR([score])
RTEMS_TOP([..],[])

RTEMS_CANONICAL_TARGET_CPU

AM_INIT_AUTOMAKE([no-define nostdinc subdir-objects foreign 1.12.2])
AM_MAINTAINER_MODE

RTEMS_ENABLE_MULTILIB
RTEMS_ENABLE_MULTIPROCESSING
RTEMS_ENABLE_POSIX
RTEMS_ENABLE_RTEMS_DEBUG
RTEMS_ENABLE_NETWORKING
RTEMS_ENABLE_PARAVIRT
RTEMS_ENABLE_PROFILING

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
RTEMS_PROG_CCAS
RTEMS_CANONICALIZE_TOOLS
AM_PROG_CC_C_O
AC_PROG_RANLIB

RTEMS_CHECK_NEWLIB

# 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([strdup strndup strncasecmp])
AC_CHECK_FUNCS([bcopy bcmp])
AC_CHECK_FUNCS([isascii fileno])

# <FIXME>
#   Check for functions supplied by newlib >= 1.17.0
# Newlib's posix/ directory
AC_CHECK_FUNCS([readdir_r isatty])
AC_CHECK_FUNCS([creat \
  opendir closedir readdir rewinddir scandir seekdir \
  sleep \
  telldir \
  usleep],,
  [rtems_missing_func="$ac_func";break])
AS_IF([test -n "$rtems_missing_func"],
  AC_MSG_ERROR([Missing function $rtems_missing_func in libc])])
AC_CHECK_FUNCS([__assert])
AC_CHECK_FUNCS([execl execlp execle execv execvp execve])
AC_CHECK_FUNCS([regcomp regexec regerror regfree])

# Mandated by POSIX, decls not present in some versions of newlib
AC_CHECK_DECLS([flockfile],[AC_CHECK_FUNCS([flockfile])],,[#include <stdio.h>])
AC_CHECK_DECLS([funlockfile],[AC_CHECK_FUNCS([funlockfile])],,[#include <stdio.h>])
AC_CHECK_DECLS([ftrylockfile],[AC_CHECK_FUNCS([ftrylockfile])],,[#include <stdio.h>])

# Newlib proprietary
AC_CHECK_HEADERS([envlock.h])
AC_CHECK_DECLS([__env_lock],,,[#include <envlock.h>])
AC_CHECK_DECLS([__env_unlock],,,[#include <envlock.h>])

# Mandated by POSIX, older newlibs bogusly provided CLOCK_PROCESS_CPUTIME+CLOCK_THREAD_CPUTIME
AC_CHECK_DECL([CLOCK_PROCESS_CPUTIME_ID],[],[AC_MSG_ERROR([missing define CLOCK_PROCESS_CPUTIME_ID])],[#include <time.h>])
AC_CHECK_DECL([CLOCK_THREAD_CPUTIME_ID],[],[AC_MSG_ERROR([missing define CLOCK_THREAD_CPUTIME_ID])],[#include <time.h>])

# Mandated by POSIX, decls not present in some versions of newlib,
# some versions stubbed in newlib's rtems crt0
RTEMS_CHECK_FUNC([seteuid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([geteuid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setegid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getegid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setuid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getuid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setgid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getgid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setsid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getsid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setpgid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getpgid],[#include <unistd.h>])
RTEMS_CHECK_FUNC([setpgrp],[#include <unistd.h>])
RTEMS_CHECK_FUNC([getpgrp],[#include <unistd.h>])

# pthread-functions not declared in some versions of newlib.
RTEMS_CHECK_FUNC([pthread_attr_getguardsize],[#include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_attr_setguardsize],[#include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_attr_setstack],[#include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_attr_getstack],[#include <pthread.h>])

# These are SMP related and were added to newlib by RTEMS.
RTEMS_CHECK_FUNC([pthread_attr_setaffinity_np],[
  #define _GNU_SOURCE
  #include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_attr_getaffinity_np],[
  #define _GNU_SOURCE
  #include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_setaffinity_np],[
  #define _GNU_SOURCE
  #include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_getaffinity_np],[
  #define _GNU_SOURCE
  #include <pthread.h>])
RTEMS_CHECK_FUNC([pthread_getattr_np],[
  #define _GNU_SOURCE
  #include <pthread.h>])
AC_CHECK_HEADERS([sys/cpuset.h])

# This was added to newlib in August 2014 to improve conformance.
# Disable use of internal definition if it is present.
RTEMS_CHECK_FUNC([sigaltstack],[
  #define _GNU_SOURCE
  #include <signal.h>])

# Mandated by POSIX, not declared in some versions of newlib.
AC_CHECK_DECLS([getrusage],,,[#include sys/resource.h])

# Newlib's unix/ directory
AC_CHECK_FUNCS([ttyname getcwd])
# </FIXME>

# Check if the installed toolchain provides these headers
# and error out if not.
AC_CHECK_HEADERS([tar.h errno.h sched.h sys/cdefs.h sys/queue.h],,
  [rtems_missing_header="$ac_header";break])
AS_IF([test -n "$rtems_missing_header"],
  AC_MSG_ERROR([Missing required header $rtems_missing_header])])

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

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

AC_HEADER_STDBOOL
AS_IF([test x"${ac_cv_header_stdbool_h}" != xyes],
[AC_MSG_ERROR([No sufficient stdbool.h 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])
AC_CHECK_TYPES([uintmax_t, intmax_t])
AC_CHECK_TYPES([uintptr_t, intptr_t])

# Some toolchain sanity checks and diagnostics
RTEMS_CHECK_GCC_SANITY

# These are conditionally defined by the toolchain
# FIXME: we should either conditionally compile those parts in
# RTEMS depending on them, or abort - For now, simply check.
AC_CHECK_HEADER([pthread.h],[
  AC_CHECK_TYPES([pthread_rwlock_t])
  AC_CHECK_TYPES([pthread_barrier_t])
  AC_CHECK_TYPES([pthread_spinlock_t])
  AC_CHECK_TYPES([struct _pthread_cleanup_context],[],[],[#include <pthread.h>])
])

AC_CHECK_HEADER([signal.h],[
  AC_CHECK_TYPES([sighandler_t])
])

RTEMS_CHECK_MULTIPROCESSING
RTEMS_CHECK_POSIX_API
RTEMS_CHECK_NETWORKING
RTEMS_CHECK_SMP
if test "${RTEMS_HAS_SMP}" = "yes"; then
  AC_CHECK_HEADERS([stdatomic.h],[],[AC_MSG_ERROR([<stdatomic.h> is required for SMP support])])
fi

rtems_major=`echo _RTEMS_VERSION | sed "s/\..*//"`
rtems_minor=`echo _RTEMS_VERSION | sed "s/[[0-9]][[0-9]]*\.//;s/\..*//"`
rtems_revision=`echo _RTEMS_VERSION | sed "s/[[0-9]][[0-9]]*\.//;s/[[0-9]][[0-9]]*\.//;s/\..*//"`

_RTEMS_CPUOPT_INIT

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

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_SMP],
  [test x"$RTEMS_HAS_SMP" = xyes],
  [1],
  [if SMP is enabled])

RTEMS_CPUOPT([RTEMS_PARAVIRT],
  [test x"$RTEMS_HAS_PARAVIRT" = xyes],
  [1],
  [PARAVIRT is enabled])

RTEMS_CPUOPT([RTEMS_PROFILING],
  [test x"$RTEMS_HAS_PROFILING" = xyes],
  [1],
  [if profiling is enabled])

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

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

RTEMS_CPUOPT([__RTEMS_USE_TICKS_FOR_STATISTICS__],
  [test x"${USE_TICKS_FOR_STATISTICS}" = x"1"],
  [1],
  [disable nanosecond granularity for statistics])

## Header file differences that need to be known in .h after install
RTEMS_CPUOPT([__RTEMS_HAVE_SYS_CPUSET_H__],
  [test x"${ac_cv_header_sys_cpuset_h}" = x"yes"],
  [1],
  [indicate if <sys/cpuset.h> is present in toolset])

## Header file differences that need to be known in .h after install
RTEMS_CPUOPT([__RTEMS_HAVE_DECL_SIGALTSTACK__],
  [test x"${ac_cv_have_decl_sigaltstack}" = x"yes"],
  [1],
  [indicate if <signal.h> in toolset has sigaltstack()])

## This improves both the size and coverage analysis.
RTEMS_CPUOPT([__RTEMS_DO_NOT_INLINE_THREAD_ENABLE_DISPATCH__],
  [test x"${RTEMS_DO_NOT_INLINE_THREAD_ENABLE_DISPATCH}" = x"1"],
  [1],
  [disable inlining _Thread_Enable_dispatch])

## This improves both the size and coverage analysis.
RTEMS_CPUOPT([__RTEMS_DO_NOT_INLINE_CORE_MUTEX_SEIZE__],
  [test x"${RTEMS_DO_NOT_INLINE_CORE_MUTEX_SEIZE}" = x"1"],
  [1],
  [disable inlining _Thread_Enable_dispatch])

## This gives the same behavior as 4.8 and older
RTEMS_CPUOPT([__RTEMS_STRICT_ORDER_MUTEX__],
  [test x"${ENABLE_STRICT_ORDER_MUTEX}" = x"1"],
  [1],
  [disable strict order mutex])

## Deactivate ada bindings
RTEMS_CPUOPT([__RTEMS_ADA__],
  [test x"${enable_ada}" = x"yes"],
  [1],
  [Define to 1 if ada/gnat bindings are built-in])

## Then we propagate a private copy of the value into cpuopts.h
## so it is always available to the RTEMS header files.

RTEMS_CPUOPT([__RTEMS_MAJOR__],
  [true],
  [$rtems_major],
  [major version portion of an RTEMS release])

RTEMS_CPUOPT([__RTEMS_MINOR__],
  [true],
  [$rtems_minor],
  [minor version portion of an RTEMS release])

RTEMS_CPUOPT([__RTEMS_REVISION__],
  [true],
  [$rtems_revision],
  [revision version portion of an RTEMS release])

_RTEMS_CPUOPT_FINI

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

# 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>])

# FIXME: We should get rid of this.
# So far, only used in libfs/src/nfsclient/src/dirutils.c
AC_CHECK_SIZEOF([mode_t])
AC_CHECK_SIZEOF([off_t])

# FIXME: We should get rid of this. It's a cludge.
AC_CHECK_SIZEOF([time_t])

AC_CHECK_SIZEOF([size_t])

# FIXME: Mandatory in SUSv4, optional in SUSv3.
#   Not implemented in GCC/newlib, so far.
AC_CHECK_DECLS([WORD_BIT],,,[#include <limits.h>])
AC_CHECK_DECLS([LONG_BIT],,,[#include <limits.h>])

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

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

## Check if libc provides decl of utime
## FIXME: utime has been deprecated in SUSv4.
##        and is likely to be removed in future versions.
## FIXME (BUG in newlib): SUSv4 saids including <utime.h> should be sufficient.
AC_CHECK_DECLS([utime],,,[#include <sys/types.h>
#include <utime.h>])
## Check if libc provides decl of utimes
AC_CHECK_DECLS([utimes],,,[#include <sys/time.h>])

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

AM_CONDITIONAL(HAS_MP,test x"$enable_multiprocessing" = x"yes" )
AM_CONDITIONAL(HAS_SMP,[test "$RTEMS_HAS_SMP" = "yes"])

AM_CONDITIONAL(HAS_PTHREADS,test x"$rtems_cv_HAS_POSIX_API" = x"yes")
AM_CONDITIONAL(LIBNETWORKING,test x"$rtems_cv_HAS_NETWORKING" = 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([LIBGNAT],[test x"$rtems_cv_HAS_POSIX_API" = x"yes" \
&& test x"$enable_ada" = x"yes"])

AM_CONDITIONAL([LIBUTF8PROC],[test $ac_cv_sizeof_size_t -gt 2])

AM_CONDITIONAL([LIBDOSFS],[dnl
test x"$ac_cv_type_uint8_t" = xyes \
&& test x"$ac_cv_type_uint16_t" = xyes])

AC_CONFIG_HEADER(config.h)

## These are needed by the NFS Client
AC_CHECK_PROG(RPCGEN,rpcgen,rpcgen)
AM_CONDITIONAL([RPCTOOLS],[test "$RPCGEN" = rpcgen \
&& test -n "$AWK" \
&& test "$enable_rpcgen" = yes])

# Filter dynamic loading to only build for architectures that have
# reloc backends
AC_MSG_CHECKING([whether CPU supports libdl])
case $RTEMS_CPU in
  arm | bfin | h8300 | i386 | lm32 | m32r | m68k | mips | \
  moxie | powerpc | sparc | v850)
   HAVE_LIBDL=yes ;;
  *)
   HAVE_LIBDL=no ;;
esac
AM_CONDITIONAL(LIBDL,[test x"$HAVE_LIBDL" = x"yes"])
AC_MSG_RESULT([$HAVE_LIBDL])

RTEMS_AMPOLISH3

# Explicitly list all Makefiles here
AC_CONFIG_FILES([
Doxyfile
Makefile
dev/Makefile
rtems/Makefile
sapi/Makefile
score/Makefile
score/cpu/Makefile
score/cpu/arm/Makefile
score/cpu/bfin/Makefile
score/cpu/avr/Makefile
score/cpu/h8300/Makefile
score/cpu/i386/Makefile
score/cpu/lm32/Makefile
score/cpu/m68k/Makefile
score/cpu/m32c/Makefile
score/cpu/m32r/Makefile
score/cpu/mips/Makefile
score/cpu/moxie/Makefile
score/cpu/nios2/Makefile
score/cpu/or1k/Makefile
score/cpu/powerpc/Makefile
score/cpu/sh/Makefile
score/cpu/sparc/Makefile
score/cpu/sparc64/Makefile
score/cpu/v850/Makefile
score/cpu/no_cpu/Makefile
posix/Makefile
libblock/Makefile
libfs/Makefile
libfs/src/nfsclient/Makefile
libgnat/Makefile
libcrypt/Makefile
libcsupport/Makefile
libnetworking/Makefile
librpc/Makefile
libmisc/Makefile
libi2c/Makefile
libmd/Makefile
libdl/Makefile
zlib/Makefile
ftpd/Makefile
telnetd/Makefile
pppd/Makefile
mghttpd/Makefile
wrapup/Makefile])

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

AC_OUTPUT