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configure.ac
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configure.ac
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###############################################################################
# CONFIGURE.AC: Process this file with AutoConf to produce a configure script.
###############################################################################
# $Id$
# AC is AutoConfigure, AM is AutoMake, and AH is AutoHeader. The
# 'HC_XXXX..' macros are custom Hercules autoconf macros defined
# in the 'hercules.m4' file in the 'autoconf' subdirectory.
AC_INIT(hercules.h) # (package, version, bugreport email, etc)
AC_REVISION($Revision$) # (the version of this configure.ac)
AC_CONFIG_AUX_DIR(autoconf) # (directory containing auxillary build tools)
AM_INIT_AUTOMAKE(hercules,3.13) # (the version of our software package)
AM_CONFIG_HEADER(config.h) # (the file the resulting configure script will produce)
AM_MAINTAINER_MODE()
AC_CANONICAL_HOST() # (sets $host_cpu, $host_vendor, and $host_os)
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
###############################################################################
# Programs section...
###############################################################################
# Set CFLAGS first to override the AC_PROG_CC default setting
CFLAGS="$CFLAGS -W -Wall"
AC_PROG_CC() # (set CC to the name of the compiler)
# -----------------------------------------------------------------------------
# PROGRAMMING NOTE: The below 'AC_SUBST' macro causes AC_OUTPUT to replace
# all instances of "@xxxxxx@" in input files with the value that the shell
# variable "xxxxxx" has when AC_OUTPUT is called. However, we setup a define
# for source files (MODULESDIR) and a variable for make ($(modexecdir)). Any
# other usage should be avoided.
# -----------------------------------------------------------------------------
modexecdir='$(libdir)/$(PACKAGE)'
AC_SUBST(modexecdir)
# -----------------------------------------------------------------------------
#
# AC_LIBTOOL_DLOPEN
#
# Enable checking for dlopen support. This macro should be used if the
# package makes use of the '-dlopen' and '-dlpreopen' flags, otherwise
# libtool will assume that the system does not support dlopening. The
# macro must be called before AC_PROG_LIBTOOL.
#
# -----------------------------------------------------------------------------
AC_LIBTOOL_DLOPEN() # (we need libtool's dlopen support)
# -----------------------------------------------------------------------------
#
# AC_LIBTOOL_WIN32_DLL
#
# This macro should be used if the package has been ported to build
# clean dlls on win32 platforms. Usually this means that any library
# data items are exported with __declspec(dllexport) and imported with
# __declspec(dllimport). If this macro is not used, libtool will assume
# that the package libraries are not dll clean and will build only static
# libraries on win32 hosts.
#
# This macro must be called before AC_PROG_LIBTOOL, and provision must
# be made to pass '-no-undefined' to libtool in link mode from the package
# Makefile. Naturally, if you pass '-no-undefined', you must ensure that
# all the library symbols really are defined at link time!
#
# -----------------------------------------------------------------------------
AC_LIBTOOL_WIN32_DLL() # (we need Win32 support in libtool)
# -----------------------------------------------------------------------------
# See: 'AC_PROG_LIBTOOL' below.
# -----------------------------------------------------------------------------
AC_DISABLE_STATIC() # (forces libtool to build shared
# libraries instead of static ones)
# -----------------------------------------------------------------------------
# AC_PROG_LIBTOOL
#
# Add support for the '--enable-shared' and '--disable-shared'
# configure flags. By default, this macro turns on shared libraries
# if they are available, and also enables static libraries if they
# don't conflict with the shared libraries. You can modify these
# defaults by calling either the AC_DISABLE_SHARED or AC_DISABLE_STATIC
# macros.
#
# Hercules REQUIRES shared libraries (i.e. DLLs), so we do indeed use
# the AC_DISABLE_STATIC macro above.
#
# -----------------------------------------------------------------------------
AC_PROG_LIBTOOL() # (we build libtool for ourselves)
# -----------------------------------------------------------------------------
#
# AC_LIB_LTDL
#
# Even though libltdl is installed together with libtool, you may wish
# to include libltdl in the distribution of your package, for the convenience
# of users of your package that don't have libtool or libltdl installed.
#
# The most simplistic way to add libltdl to your package is to copy the
# source files, 'ltdl.c' and 'ltdl.h', to a source directory withing your
# package and to build and link them along with the rest of your sources.
#
# To do this, you must add a call to the 'AC_LIB_LTDL' macro to your package's
# 'configure.in' to perform the required configure time checks in order that
# 'ltdl.o' is built correctly.
#
# This method does have its problems though: if you try to link the package
# binaries with an installed libltdl, or a library which depends on libltdl,
# you may have problems with duplicate symbol definitions.
#
# In order to enable this flavor of libltdl, you should add the line
# 'AC_LIBLTDL_CONVENIENCE' to your `configure.in', before 'AC_PROG_LIBTOOL'.
#
# In order to select the installable version of libltdl, you should add a
# call of the macro 'AC_LIBLTDL_INSTALLABLE' to your 'configure.in' before
# 'AC_PROG_LIBTOOL'. This macro will check whether libltdl is already
# installed and, if not, request the libltdl embedded in your package to be
# built and installed.
#
# Whatever macro you use, it is up to you to ensure that your 'configure.in'
# will configure libltdl, using 'AC_CONFIG_SUBDIRS', and that your 'Makefile's
# will start sub-makes within libltdl's directory, using automake's SUBDIRS,
# for example. Both macros define the shell variables LIBLTDL, to the link flag
# that you should use to link with libltdl, and LTDLINCL, to the preprocessor
# flag that you should use to compile with programs that include 'ltdl.h'. It
# is up to you to use 'AC_SUBST' to ensure that this variable will be available
# in 'Makefile's, or add them to variables that are 'AC_SUBST'ed by default,
# such as LIBS and CPPFLAGS.
#
# So, when you want to link a program with libltdl, be it a convenience,
# installed or installable library, just compile with '$(LTDLINCL)' and link
# it with '$(LIBLTDL)', using libtool.
#
# You should probably also add 'AC_LIBTOOL_DLOPEN' to your 'configure.in' before
# 'AC_PROG_LIBTOOL', otherwise libtool will assume no dlopening mechanism is
# supported, and revert to dlpreopening, which is probably not what you want.
#
# The following example shows you how to embed the convenience libltdl
# in your package. In order to use the installable variant just replace
# 'AC_LIBLTDL_CONVENIENCE' with 'AC_LIBLTDL_INSTALLABLE'. We assume that libltdl
# was embedded using 'libtoolize --ltdl':
#
# configure.in:
#
# ...
# dnl Enable building of the convenience library
# dnl and set LIBLTDL accordingly
# AC_LIBLTDL_CONVENIENCE
# dnl Substitute LTDLINCL and LIBLTDL in the Makefiles
# AC_SUBST(LTDLINCL)
# AC_SUBST(LIBLTDL)
# dnl Check for dlopen support
# AC_LIBTOOL_DLOPEN
# dnl Configure libtool
# AC_PROG_LIBTOOL
# dnl Configure libltdl
# AC_CONFIG_SUBDIRS(libltdl)
# ...
#
# Makefile.am:
#
# ...
# SUBDIRS = libltdl
#
# INCLUDES = $(LTDLINCL)
#
# myprog_LDFLAGS = -export-dynamic
# # The quotes around -dlopen below fool automake <= 1.4 into accepting it
# myprog_LDADD = $(LIBLTDL) "-dlopen" self "-dlopen" foo1.la
# myprog_DEPENDENCIES = $(LIBLTDL) foo1.la
# ...
#
# -----------------------------------------------------------------------------
AC_LIB_LTDL() # (we need the ltdl libtool library)
AC_SUBST([LIBTOOL_DEPS]) # (see PROGRAMMING NOTE above)
# -----------------------------------------------------------------------------
# (See comments in the 'AC_CHECK_LIB' Libraries section further below)
# -----------------------------------------------------------------------------
AC_MSG_NOTICE( [(use of lt_dlopen forced by Hercules Dynamic Loader requirement)] )
AS_IF([test "x${with_included_ltdl}" = "xno"],
[hc_cv_have_lt_dlopen=no],
[hc_cv_have_lt_dlopen=yes])
AS_IF([test "x${ac_cv_func_dlopen}" = "xyes" -o "x${ac_cv_lib_dl_dlopen}" = "xyes"],
[hc_cv_have_dlopen=yes],
[hc_cv_have_dlopen=no])
HC_LD_DISALLOWDUPS() # (add duplicate symbols option to LDFLAGS)
# -----------------------------------------------------------------------------
# The following is a "global error" flag used to defer aborting configure
# until after ALL errors have been detected/reported.
# -----------------------------------------------------------------------------
hc_error=no
###############################################################################
# Autoheader templates
###############################################################################
# All AC_DEFINE() macros used within autoconf (to define pre-processor vars
# used during the actual build process) must have corresponding AH_TEMPLATE
# statements coded somewhere. We place them all here simply for convenience.
AH_TEMPLATE( [CUSTOM_BUILD_STRING], [Define to provide additional information about this build] )
AH_TEMPLATE( [MAX_CPU_ENGINES], [Defines the maximum number of emulated CPU engines] )
AH_TEMPLATE( [DEBUG], [Define to enable extra debugging code (TRACE/VERIFY/ASSERT macros)] )
AH_TEMPLATE( [C99_FLEXIBLE_ARRAYS], [Define if your gcc properly supports C99 flexible arrays] )
AH_TEMPLATE( [HAVE_ATTR_REGPARM], [Define if your gcc properly supports __attribute__((regparm(n)))] )
AH_TEMPLATE( [NO_ASM_BYTESWAP], [Define to disable assembler routines for byte swapping] )
AH_TEMPLATE( [NO_SETUID], [Define to disable setuid operation] )
AH_TEMPLATE( [NO_SIGABEND_HANDLER], [Define to disable sigabend_handler (please describe this better)] )
AH_TEMPLATE( [NON_UNIQUE_GETTIMEOFDAY], [Define if 'gettimeofday' returns non-unique values] )
AH_TEMPLATE( [NEED_GETOPT_WRAPPER], [Define to indicate a wrapper for getopt is needed] )
AH_TEMPLATE( [NEED_GETOPT_OPTRESET], [Define to indicate optreset exists] )
AH_TEMPLATE( [HAVE_INTTYPES_H], [Define if inttypes.h header file is present on your system] )
AH_TEMPLATE( [HAVE_U_INT], [Define if your system uses u_int8_t, etc, instead of uint8_t] )
AH_TEMPLATE( [OPTION_CONFIG_SYMBOLS], [Define to enable symbolic substitutions in configuration file] )
AH_TEMPLATE( [OPTION_ENHANCED_CONFIG_SYMBOLS], [Define to enable enhanced-mode symbolic substitutions in configuration file] )
AH_TEMPLATE( [OPTION_ENHANCED_CONFIG_INCLUDE], [Define to enable enhanced-mode 'include' file support in configuration file] )
AH_TEMPLATE( [OPTION_HAO], [Define to enable Hercules Automatic Operator feature] )
AH_TEMPLATE( [OPTION_DYNAMIC_LOAD], [Define to enable Hercules Dynamic Loader feature] )
AH_TEMPLATE( [HDL_BUILD_SHARED], [Define to indicate shared libraries are being used] )
AH_TEMPLATE( [HDL_USE_LIBTOOL], [Define to cause dynamic loader to use libtool instead of dlopen] )
AH_TEMPLATE( [BUILD_HERCIFC], [Define if hercifc program is to be built] )
AH_TEMPLATE( [WIN32], [Define when building under Win32 (MinGW or Cygwin)] )
AH_TEMPLATE( [EXTERNALGUI], [Define to build interface to external Windows GUI] )
AH_TEMPLATE( [OPTION_FTHREADS], [Define to use included threads implementation (fthreads)] )
AH_TEMPLATE( [TIMESPEC_IN_TIME_H], [Define if 'struct timespec' defined in <time.h>] )
AH_TEMPLATE( [TIMESPEC_IN_SYS_TYPES_H], [Define if 'struct timespec' defined in <sys/types.h>] )
AH_TEMPLATE( [_BSD_SOCKLEN_T_], [Define missing macro on apple darwin (osx) platform] )
AH_TEMPLATE( [CCKD_BZIP2], [Define to enable bzip2 compression in emulated DASDs] )
AH_TEMPLATE( [HET_BZIP2], [Define to enable bzip2 compression in emulated tapes] )
AH_TEMPLATE( [OPTION_CAPABILITIES], [Define to enable posix draft 1003.1e capabilities] )
AH_TEMPLATE( [DISABLE_IAF2], [Define if enable_interlocked_access_facility_2 is to be forced off] )
AH_TEMPLATE( [C11_ATOMICS_AVAILABLE], [Define if C11 atomics are available] )
AH_TEMPLATE( [C11_ATOMIC_BOOL_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_CHAR_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_CHAR16_T_LOCK_FREE],[Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_CHAR32_T_LOCK_FREE],[Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_WCHAR_T_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_SHORT_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_INT_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_LONG_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_LLONG_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [C11_ATOMIC_POINTER_LOCK_FREE], [Define to 'stdatomics.h' ATOMIC_*_LOCK_FREE value] )
AH_TEMPLATE( [HAVE_ATOMIC_INTRINSICS], [Define if '__atomic_xor_fetch' and friends are available] )
AH_TEMPLATE( [HAVE_SYNC_BUILTINS], [Define if '__sync_xor_and_fetch' and friends are available] )
###############################################################################
# OS-specific settings that we can't figure out any other way (yet)
###############################################################################
#
# Determine what type of host we're building on...
#
case "$host_os" in
linux*)
hc_cv_is_nix=yes
hc_cv_is_windows=no
hc_cv_is_mingw32=no
hc_cv_is_apple=no
;;
mingw*)
hc_cv_is_nix=no
hc_cv_is_windows=yes
hc_cv_is_mingw32=yes
hc_cv_is_apple=no
;;
cygwin*)
hc_cv_is_nix=no
hc_cv_is_windows=yes
hc_cv_is_mingw32=no
hc_cv_is_apple=no
;;
darwin*)
if test $host_vendor = apple; then
hc_cv_is_nix=no
hc_cv_is_windows=no
hc_cv_is_mingw32=no
hc_cv_is_apple=yes
else
hc_cv_is_nix=no
hc_cv_is_windows=no
hc_cv_is_mingw32=no
hc_cv_is_apple=no
fi
;;
*bsd*)
hc_cv_is_nix=yes
hc_cv_is_windows=no
hc_cv_is_mingw32=no
hc_cv_is_apple=no
;;
*)
hc_cv_is_nix=no
hc_cv_is_windows=no
hc_cv_is_mingw32=no
hc_cv_is_apple=no
;;
esac
#------------------------------------------------------#
# Hard-coded host-operating-system-specific settings #
# that we have no other/easy way to figure out... #
#------------------------------------------------------#
if test "$hc_cv_is_nix" = "yes"; then
hc_cv_build_hercifc=yes
hc_cv_non_unique_gettimeofday=no
elif test "$hc_cv_is_windows" = "yes"; then
hc_cv_build_hercifc=no
hc_cv_non_unique_gettimeofday=yes
elif test "$hc_cv_is_apple" = "yes"; then
hc_cv_build_hercifc=yes
hc_cv_non_unique_gettimeofday=no
else
hc_cv_build_hercifc=no
hc_cv_non_unique_gettimeofday=no
fi
###############################################################################
# Checks for REQUIRED (non-optional) header files...
###############################################################################
# PROGRAMMING NOTE: We use 'AC_CHECK_HEADER' here (singular) since we don't
# care whether 'HAVE_XXX' gets #defined or not since, because these are re-
# quired headers, if any of them are not found, we abort and thus we don't
# need to have any 'HAVE_XXX' pre-processor #defined entered into config.h
# (because we can't build Herc at all if any of them don't happen to exist)
AC_CHECK_HEADER( ctype.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'ctype.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( errno.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'errno.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( fcntl.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'fcntl.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( limits.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'limits.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( setjmp.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'setjmp.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( stdarg.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'stdarg.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( stdio.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'stdio.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( stdlib.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'stdlib.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( string.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'string.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( time.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'time.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( unistd.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'unistd.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( sys/stat.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'sys/stat.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( sys/time.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'sys/time.h' not found] ); hc_error=yes ] )
AC_CHECK_HEADER( sys/types.h, [], [ AC_MSG_RESULT( [ERROR: Required header 'sys/types.h' not found] ); hc_error=yes ] )
# PROGRAMMING NOTE: the pthread.h header only required if this is not
# an fthreads build. Thus we delay aborting until later once we know
# (if this is a windows build; otherwise we abort right away)
AC_CHECK_HEADER( pthread.h, [hc_cv_have_pthread_h=yes],
[
if test "$hc_cv_is_windows" = "yes"; then
hc_cv_alt_pthread_location=/usr/Pthreads
AC_MSG_NOTICE( [looking for pthread.h in ${hc_cv_alt_pthread_location}] )
hc_temp=$CFLAGS
CFLAGS="$CFLAGS -I${hc_cv_alt_pthread_location}"
AC_CHECK_HEADER( pthread.h,
[hc_cv_have_pthread_h=yes],
[hc_cv_have_pthread_h=no]
)
CFLAGS=$hc_temp
else
AC_MSG_RESULT( [ERROR: Required header 'pthread.h' not found] )
hc_error=yes
fi
]
)
AC_CACHE_SAVE()
###############################################################################
# Checks for optional (non-required) header files...
###############################################################################
# PROGRAMMING NOTE: We use 'AC_CHECK_HEADERS' here (plural) to cause autoconf
# to automatically add a #define/#undef 'HAVE_XXX' statement into config.h to
# let us know whether the header exists on this system or not (since, because
# these are optional headers, we are still able to successfully build Herc if
# they don't happen to exist). The 'hc_cv_have_xxx' variables are only defined
# in case other parts of configure.ac need to know whether the header exists
# or not without having to do their own AC_CHECK_HEADERS (since we've already
# done it).
#------------------------------------------------------------------------------
# PROGRAMMING NOTE: on Darwin sys/socket.h must be included before
# net/if.h, net/route.h, or netinet/in.h can be #included, and on OS X 10.3
# (but not 10.4) sys/types.h must be #included before sys/socket.h. Thus
# the below four header checks are treated specially. If we ever drop support
# for OS X 10.3, a lot of this cruft can be removed, not just here but
# anywhere we find ourselves manually including sys/types.h.
# PROGRAMMING NOTE: on *BSD sys/socket.h must be included before net/if.h,
# net/route.h, or netinet/in.h can be #included.
AC_CHECK_HEADERS( sys/socket.h, [hc_cv_have_sys_socket_h=yes], [hc_cv_have_sys_socket_h=no],
[
#include <sys/types.h>
] )
AC_CHECK_HEADERS( net/if.h, [hc_cv_have_net_if_h=yes], [hc_cv_have_net_if_h=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_HEADERS( netinet/in.h, [hc_cv_have_netinet_in_h=yes], [hc_cv_have_netinet_in_h=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_HEADERS( netinet/tcp.h, [hc_cv_have_netinet_tcp_h=yes], [hc_cv_have_netinet_tcp_h=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_HEADERS( net/route.h, [hc_cv_have_net_route_h=yes], [hc_cv_have_net_route_h=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
#------------------------------------------------------------------------------
AC_CHECK_HEADERS( arpa/inet.h, [hc_cv_have_arpa_inet_h=yes], [hc_cv_have_arpa_inet_h=no] )
AC_CHECK_HEADERS( linux/if_tun.h, [hc_cv_have_linux_if_tun_h=yes], [hc_cv_have_linux_if_tun_h=no] )
AC_CHECK_HEADERS( sys/ioctl.h, [hc_cv_have_sys_ioctl_h=yes], [hc_cv_have_sys_ioctl_h=no] )
AC_CHECK_HEADERS( sys/mman.h, [hc_cv_have_sys_mman_h=yes], [hc_cv_have_sys_mman_h=no] )
#------------------------------------------------------------------------------
# PROGRAMMING NOTE: on *BSD systems sys/param.h must be #included before
# sys/mount.h as it contains the #define of NGROUPS.
AC_CHECK_HEADERS( sys/param.h, [hc_cv_have_sys_param_h=yes], [hc_cv_have_sys_param_h=no] )
AC_CHECK_HEADERS( sys/mount.h, [hc_cv_have_sys_mount_h=yes], [hc_cv_have_sys_mount_h=no],
[
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
] )
#------------------------------------------------------------------------------
AC_CHECK_HEADERS_ONCE(stdatomic.h sys/sysctl.h assert.h)
AC_CHECK_HEADERS( sys/mtio.h, [hc_cv_have_sys_mtio_h=yes], [hc_cv_have_sys_mtio_h=no] )
AC_CHECK_HEADERS( sys/resource.h, [hc_cv_have_sys_resource_h=yes], [hc_cv_have_sys_resource_h=no] )
AC_CHECK_HEADERS( sys/uio.h, [hc_cv_have_sys_uio_h=yes], [hc_cv_have_sys_uio_h=no] )
AC_CHECK_HEADERS( sys/utsname.h, [hc_cv_have_sys_utsname_h=yes], [hc_cv_have_sys_utsname_h=no] )
AC_CHECK_HEADERS( sys/wait.h, [hc_cv_have_sys_wait_h=yes], [hc_cv_have_sys_wait_h=no] )
AC_CHECK_HEADERS( sys/un.h, [hc_cv_have_sys_un_h=yes], [hc_cv_have_sys_un_h=no] )
AC_CHECK_HEADERS( byteswap.h, [hc_cv_have_byteswap_h=yes], [hc_cv_have_byteswap_h=no] )
AC_CHECK_HEADERS( bzlib.h, [hc_cv_have_bzlib_h=yes], [hc_cv_have_bzlib_h=no] )
AC_CHECK_HEADERS( dlfcn.h, [hc_cv_have_dlfcn_h=yes], [hc_cv_have_dlfcn_h=no] )
AC_CHECK_HEADERS( inttypes.h, [hc_cv_have_inttypes_h=yes], [hc_cv_have_inttypes_h=no] )
AC_CHECK_HEADERS( iconv.h, [hc_cv_have_iconv_h=yes], [hc_cv_have_iconv_h=no] )
AC_CHECK_HEADERS( ltdl.h, [hc_cv_have_ltdl_h=yes], [hc_cv_have_ltdl_h=no] )
AC_CHECK_HEADERS( malloc.h, [hc_cv_have_malloc_h=yes], [hc_cv_have_malloc_h=no] )
AC_CHECK_HEADERS( math.h, [hc_cv_have_math_h=yes], [hc_cv_have_math_h=no] )
AC_CHECK_HEADERS( netdb.h, [hc_cv_have_netdb_h=yes], [hc_cv_have_netdb_h=no] )
AC_CHECK_HEADERS( pwd.h, [hc_cv_have_pwd_h=yes], [hc_cv_have_pwd_h=no] )
AC_CHECK_HEADERS( regex.h, [hc_cv_have_regex_h=yes], [hc_cv_have_regex_h=no] )
AC_CHECK_HEADERS( sched.h, [hc_cv_have_sched_h=yes], [hc_cv_have_sched_h=no] )
AC_CHECK_HEADERS( signal.h, [hc_cv_have_signal_h=yes], [hc_cv_have_signal_h=no] )
AC_CHECK_HEADERS( termios.h, [hc_cv_have_termios_h=yes], [hc_cv_have_termios_h=no] )
AC_CHECK_HEADERS( time.h, [hc_cv_have_time_h=yes], [hc_cv_have_time_h=no] )
AC_CHECK_HEADERS( zlib.h, [hc_cv_have_zlib_h=yes], [hc_cv_have_zlib_h=no] )
AC_CHECK_HEADERS( sys/capability.h, [hc_cv_have_sys_capa_h=yes], [hc_cv_have_sys_capa_h=no] )
AC_CHECK_HEADERS( sys/prctl.h, [hc_cv_have_sys_prctl_h=yes], [hc_cv_have_sys_prctl_h=no] )
AC_CACHE_SAVE()
###############################################################################
# Checks for declarations...
###############################################################################
# PROGRAMMING NOTE: For declaration checks, you need to be careful to use the
# following test in your program:
#
# #if defined(HAVE_DECL_XXXX) && !HAVE_DECL_XXXXX
# ...code to handle not declared case...
# #endif
#
# This is because UNLIKE other 'AC_CHECK' macros, when a SYMBOL isn't DECLared,
# "HAVE_DECL_XXXX" is #defined to '0' instead of leaving "HAVE_DECL_XXXX" #undefined.
# (e.g. #defined to 1 if you have the declaration and #defined to 0 if you don't)
AC_CHECK_DECLS( SIGUSR1, [hc_cv_have_sigusr1=yes], [hc_cv_have_sigusr1=no], [#include <signal.h>] )
AC_CHECK_DECLS( SIGUSR2, [hc_cv_have_sigusr2=yes], [hc_cv_have_sigusr2=no], [#include <signal.h>] )
AC_CHECK_DECLS( SIGPIPE, [hc_cv_have_sigpipe=yes], [hc_cv_have_sigpipe=no], [#include <signal.h>] )
AC_CHECK_DECLS( SIGBUS, [hc_cv_have_sigbus=yes], [hc_cv_have_sigbus=no], [#include <signal.h>] )
AC_CHECK_DECLS( IFNAMSIZ, [hc_cv_have_ifnamsiz=yes], [hc_cv_have_ifnamsiz=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_DECLS( LOGIN_NAME_MAX, [hc_cv_have_login_name_max=yes], [hc_cv_have_login_name_max=no], [#include <limits.h>] )
AC_CHECK_DECLS( _SC_NPROCESSORS_CONF, [hc_cv_have_sc_nprocessors_conf=yes], [hc_cv_have_sc_nprocessors_conf=no], [#include <unistd.h>] )
AC_CHECK_DECLS( _SC_NPROCESSORS_ONLN, [hc_cv_have_sc_nprocessors_onln=yes], [hc_cv_have_sc_nprocessors_onln=no], [#include <unistd.h>] )
AC_CHECK_DECLS( SIOCSIFNETMASK, [hc_cv_have_siocsifnetmask=yes], [hc_cv_have_siocsifnetmask=no], [#include <linux/sockios.h>] )
AC_CHECK_DECLS( SIOCSIFHWADDR, [hc_cv_have_siocsifhwaddr=yes], [hc_cv_have_siocsifhwaddr=no], [#include <linux/sockios.h>] )
AC_CHECK_DECLS( SIOCADDRT, [hc_cv_have_siocaddrt=yes], [hc_cv_have_siocaddrt=no], [#include <linux/sockios.h>] )
AC_CHECK_DECLS( SIOCDELRT, [hc_cv_have_siocdelrt=yes], [hc_cv_have_siocdelrt=no], [#include <linux/sockios.h>] )
AC_CHECK_DECLS( SIOCDIFADDR, [hc_cv_have_siocdifaddr=yes], [hc_cv_have_siocdifaddr=no], [#include <linux/sockios.h>] )
if test "$hc_cv_have_sys_mtio_h" == "yes"; then
AC_CHECK_DECLS( MTEWARN, [hc_cv_have_mtewarn=yes], [hc_cv_have_mtewarn=no], [#include <sys/mtio.h>] )
else
hc_cv_have_mtewarn=no
fi
AC_CACHE_SAVE()
###############################################################################
# Checks for types...
###############################################################################
AC_CHECK_TYPES( u_int8_t, [hc_cv_have_u_int8_t=yes], [hc_cv_have_u_int8_t=no] )
AC_CHECK_TYPES( useconds_t, [hc_cv_have_useconds_t=yes], [hc_cv_have_useconds_t=no] )
AC_CHECK_TYPES( id_t, [hc_cv_have_id_t=yes], [hc_cv_have_id_t=no] )
AC_CHECK_TYPES( u_char, [hc_cv_have_u_char=yes], [hc_cv_have_u_char=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_TYPES( u_short, [hc_cv_have_u_short=yes], [hc_cv_have_u_short=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_TYPES( u_int, [hc_cv_have_u_int=yes], [hc_cv_have_u_int=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_TYPES( u_long, [hc_cv_have_u_long=yes], [hc_cv_have_u_long=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CHECK_TYPES( in_addr_t, [hc_cv_have_in_addr_t=yes], [hc_cv_have_in_addr_t=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
] )
AC_CHECK_TYPES( socklen_t, [hc_cv_have_socklen_t=yes], [hc_cv_have_socklen_t=no],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
] )
AC_CACHE_SAVE()
###############################################################################
# Checks for libraries...
###############################################################################
# PROGRAMMING NOTE: we require libtool (or, optionally, dlltool (a less power-
# ful (flexible) libtool-like tool for Windows platforms) in order to support
# OPTION_DYNAMIC_LOAD. This is a relatively safe requirement since we provide
# a version of libtool with Hercules (and build it as part of the preliminary
# autoconf processing; see the 'Programs' section above). However, we need to
# keep the below check for 'dlopen' anyway since we prefer that libtool use it
# instead of its own equivalent (lt_dlopen) if it's available.
AC_CHECK_LIB( msvcrt, _pipe )
AC_CHECK_LIB( dl, dlopen )
AC_CHECK_LIB( m, sqrt )
AC_CHECK_LIB( socket, connect )
AC_CHECK_LIB( nsl, gethostbyname )
AC_CHECK_LIB( resolv, inet_aton )
AC_CHECK_LIB( z, uncompress )
AC_CHECK_LIB( bz2, BZ2_bzBuffToBuffDecompress,
[ hc_cv_have_libbz2=yes ],
[ hc_cv_have_libbz2=no ] )
AC_CHECK_LIB( iconv, iconv )
# jbs 10/15/2003 Solaris requires -lrt for sched_yield() and fdatasync()
AC_CHECK_LIB( rt, sched_yield )
# rbowler 2008/03/10 rev 1.196 Solaris 2.9 requires -lpthread
AC_CHECK_LIB( pthread,pthread_create )
AC_CACHE_SAVE()
###############################################################################
# Checks for library functions...
###############################################################################
# PROGRAMMING NOTE: AC_CHECK_LIB should be called first for the below
# library function checks to ensure the library where the function is
# defined gets added to the LIBS library search variable...
###############################################################################
AC_CHECK_FUNCS( iconv )
AC_CHECK_FUNCS( memrchr )
AC_CHECK_FUNCS( getopt_long )
AC_CHECK_FUNCS( sqrtl ldexpl fabsl fmodl frexpl )
AC_CHECK_FUNCS( ldexpf frexpf fabsf rint )
AC_CHECK_FUNCS( strlcpy strlcat )
AC_CHECK_FUNCS( strerror_r )
AC_CHECK_FUNCS( strsignal, [hc_cv_have_strsignal=yes], [hc_cv_have_strsignal=no] )
AC_CHECK_FUNCS( sys_siglist )
AC_CHECK_FUNCS( InitializeCriticalSectionAndSpinCount )
AC_CHECK_FUNCS( sleep usleep nanosleep )
AC_CHECK_FUNCS( sched_yield )
AC_CHECK_FUNCS( strtok_r )
AC_CHECK_FUNCS( pipe )
AC_CHECK_FUNCS( gettimeofday )
AC_CHECK_FUNCS( getpgrp )
AC_CHECK_FUNCS( scandir alphasort )
AC_CHECK_FUNCS( getlogin getlogin_r )
AC_CHECK_FUNCS( realpath )
AC_CHECK_FUNCS( fdatasync fsync ftruncate )
AC_CHECK_FUNCS( inet_aton )
AC_CHECK_FUNCS( fork socketpair )
AC_CHECK_FUNCS( sysconf )
AC_CHECK_FUNCS( vsscanf,
[hc_cv_have_vsscanf=yes],
[hc_cv_have_vsscanf=no]
)
AC_CHECK_FUNCS( setresuid getresuid,
[hc_cv_have_getset_uid=yes],
[hc_cv_have_getset_uid=no; break]
)
if test "$hc_cv_have_getset_uid" != "yes"; then
AC_CHECK_FUNCS( setreuid geteuid getuid,
[hc_cv_have_getset_uid=yes],
[hc_cv_have_getset_uid=no; break]
)
fi
# FIXME: Disabled because some builtin ffs seem to be causing a problem.
# (gcc 3.4 barfs on certain 'march=' settings?)
#AC_CHECK_FUNCS( ffs )
# For OS X 10.6 autoconf defines HAVE_FDATASYNC even though there is
# no function prototype declared for fdatasync() and unistd.h contains
# define _POSIX_SYNCHRONIZED_IO (-1) which indicates that fdatasync is
# not supported. So to decide whether fdatasync really can be used, we
# create a new symbol HAVE_FDATASYNC_SUPPORTED which is defined only if
# HAVE_FDATASYNC is defined and _POSIX_SYNCHRONIZED_IO is not negative.
AC_CACHE_CHECK([whether fdatasync is supported],[ac_cv_func_fdatasync_supported],[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <unistd.h>
]],[[
#if !defined(HAVE_FDATASYNC)
#error fdatasync is not defined on this platform
#endif
#if defined(_POSIX_SYNCHRONIZED_IO) && (_POSIX_SYNCHRONIZED_IO+0 < 0)
#error fdatasync is not supported on this platform
#endif
]])],
[ac_cv_func_fdatasync_supported=yes],
[ac_cv_func_fdatasync_supported=no])
])
AS_IF([test "x${ac_cv_func_fdatasync_supported}" = "xyes"],
[AC_DEFINE([HAVE_FDATASYNC_SUPPORTED],[1],[Define to 1 if the fdatasync function is supported.])])
AC_CACHE_SAVE()
###############################################################################
# Checks for structures and structure members...
###############################################################################
AC_CHECK_MEMBERS( [struct sockaddr_in.sin_len],
[hc_cv_have_sockaddr_in_sin_len=yes ],
[hc_cv_have_sockaddr_in_sin_len=no ],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
] )
AC_CHECK_MEMBERS( [struct in_addr.s_addr],
[hc_cv_have_in_addr_s_addr=yes ],
[hc_cv_have_in_addr_s_addr=no ],
[
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
] )
AC_CHECK_MEMBERS( [struct sigaction.sa_sigaction],
[hc_cv_have_sa_sigaction=yes ],
[hc_cv_have_sa_sigaction=no ],
[#include <signal.h> ] )
AC_CHECK_MEMBERS( [struct timespec.tv_nsec],
[
hc_cv_timespec_in_sys_types_h=yes
hc_cv_timespec_in_time_h=no
],
[
AC_CHECK_MEMBERS( [struct timespec.tv_nsec],
[
hc_cv_timespec_in_sys_types_h=no
hc_cv_timespec_in_time_h=yes
],
[
hc_cv_timespec_in_sys_types_h=no
hc_cv_timespec_in_time_h=no
],
[#include <time.h>]
)
],
[#include <sys/types.h>]
)
AC_CACHE_SAVE()
###############################################################################
# Checks for compiler characteristics...
###############################################################################
AC_C_BIGENDIAN()
# PROGRAMMING NOTE: Okay, this is stupid. If there are any trailing spaces
# following the type we're checking the size of, then they're converted to
# underscores in the 'SIZEOF_XXXX' that gets #defined! For example, doing a
# AC_CHECK_SIZEOF( int ) yields: #define SIZEOF_INT____ 4 !!!!!!!!!!!!!
# So... the below AC_CHECK_SIZEOF macros must NOT have any spaces in them!!
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(size_t)
AC_CHECK_SIZEOF(int *)
AC_CHECK_SIZEOF(off_t)
#----------------------------------#
# Structure alignment/size test #
#----------------------------------#
AC_MSG_NOTICE( [begin check: whether byte structs are aligned/rounded by default...] )
cat > conftest.h << __EOF
#include <stdio.h>
struct bytestruct
{
unsigned char a;
};
__EOF
AC_CHECK_SIZEOF( struct bytestruct, [], [#include "conftest.h"] )
if test "$ac_cv_sizeof_struct_bytestruct" = "1"; then
hc_cv_byte_structs_aligned_and_rounded_by_default=no
hc_cv_byte_structs_always_aligned_and_rounded=no
else
# The sizeof our test structure is not '1'.
# The compiler is rounding the size of the
# structure upward to some predefined value.
hc_cv_byte_structs_aligned_and_rounded_by_default=yes
# If there's no way to request the compiler
# to not do that, then we can't build Herc.
case "$host_cpu-$GCC" in
arm*-yes|xscale*-yes|sh*-yes|pxa*-yes)
hc_cv_byte_structs_always_aligned_and_rounded=no
;;
*)
hc_cv_byte_structs_always_aligned_and_rounded=yes
;;
esac
fi
AC_MSG_NOTICE( [results: byte structs are aligned/rounded by default... ${hc_cv_byte_structs_aligned_and_rounded_by_default}] )
if test "$hc_cv_byte_structs_always_aligned_and_rounded" = "yes"; then
AC_MSG_RESULT( [ERROR: Size of structures are aligned/rounded and we don't know how to tell the compiler otherwise] )
hc_error=yes
fi
#------------------------------#
# Check if this is GCC 2.96 #
#------------------------------#
AC_CACHE_CHECK( [if this is the broken 2.96 version of GCC],
[hc_cv_is_gcc_2_96],
[
if test "$GCC" = "yes"; then
AC_COMPILE_IFELSE(
[
#if __GNUC__ == 2 && __GNUC_MINOR__ == 96
yes;
#else
int no;
#endif
],
[hc_cv_is_gcc_2_96=no],
[hc_cv_is_gcc_2_96=yes]
)
else
hc_cv_is_gcc_2_96=no
fi
]
)
#---------------------------------------------------#
# Check if atomic '__sync' builtins are available #
#---------------------------------------------------#
# Note: We purposely do *NOT* check for GCC. We don't
# care if the compiler is GCC or CLANG. Either is ok.
AC_CACHE_CHECK( [if atomic '_sync' builtins are available],
[hc_cv_sync_builtins_available],
[
AC_COMPILE_IFELSE(
[
static unsigned char b = 0;
static unsigned char *p = &b;
void main()
{
__sync_or_and_fetch ( p, 0xFF );
__sync_and_and_fetch ( p, 0x00 );
__sync_xor_and_fetch ( p, 0xAC );
}
],
[hc_cv_sync_builtins_available=yes],
[hc_cv_sync_builtins_available=no] )
]
)
#------------------------------------------------#
# Check if '__atomic' intrinsics are available #
#------------------------------------------------#
# Note: We purposely do *NOT* check for GCC. We don't
# care if the compiler is GCC or CLANG. Either is ok.
AC_CACHE_CHECK( [if '__atomic' intrinsics are available],
[hc_cv_atomic_intrinsics_available],
[
AC_COMPILE_IFELSE(
[
static unsigned char b = 0;
static unsigned char *p = &b;
void main()
{
__atomic_or_fetch ( p, 0xFF, __ATOMIC_SEQ_CST );
__atomic_and_fetch ( p, 0x00, __ATOMIC_SEQ_CST );
__atomic_xor_fetch ( p, 0xAC, __ATOMIC_SEQ_CST );
}
],
[hc_cv_atomic_intrinsics_available=yes],
[hc_cv_atomic_intrinsics_available=no] )
]
)
#---------------------------------------#
# Check if C11 atomics are available #
#---------------------------------------#
# Note: We purposely do *NOT* check for GCC. We don't
# care if the compiler is GCC or CLANG. Either is ok.
AC_CACHE_CHECK( [if C11 atomics are available],
[hc_cv_c11_atomics_available],
[
AC_COMPILE_IFELSE(
[
#if !defined(HAVE_STDATOMIC_H) || defined(__STDC_NO_ATOMICS__)
#error C11 atomics are not available
#else
#include <stdatomic.h>
#if defined(ATOMIC_CHAR_LOCK_FREE)
#define C11_ATOMICS_ARE_AVAILABLE
#else
#error C11 atomics are not available
#endif
#endif
],
[hc_cv_c11_atomics_available=yes],
[hc_cv_c11_atomics_available=no] )
]
)
#-----------------------------------------------#
# Determine 'safe' ATOMIC_*_LOCK_FREE values #
#-----------------------------------------------#
if test "$hc_cv_c11_atomics_available" = "yes"; then
HC_GET_C11_LOCK_FREE_VALUE(ATOMIC_BOOL_LOCK_FREE)
hc_cv_c11_atomic_bool_lock_free="$c11_lock_free_value"
HC_GET_C11_LOCK_FREE_VALUE(ATOMIC_CHAR_LOCK_FREE)
hc_cv_c11_atomic_char_lock_free="$c11_lock_free_value"
HC_GET_C11_LOCK_FREE_VALUE(ATOMIC_CHAR16_T_LOCK_FREE)
hc_cv_c11_atomic_char16_t_lock_free="$c11_lock_free_value"
HC_GET_C11_LOCK_FREE_VALUE(ATOMIC_CHAR32_T_LOCK_FREE)
hc_cv_c11_atomic_char32_t_lock_free="$c11_lock_free_value"
HC_GET_C11_LOCK_FREE_VALUE(ATOMIC_WCHAR_T_LOCK_FREE)
hc_cv_c11_atomic_wchar_t_lock_free="$c11_lock_free_value"