dnl

dnl configure.ac --- autoconf input file for gawk

dnl

dnl Copyright (C) 1995-2018 the Free Software Foundation, Inc.

dnl

dnl This file is part of GAWK, the GNU implementation of the

dnl AWK Programming Language.

dnl

dnl GAWK is free software; you can redistribute it and/or modify

dnl it under the terms of the GNU General Public License as published by

dnl the Free Software Foundation; either version 3 of the License, or

dnl (at your option) any later version.

dnl

dnl GAWK is distributed in the hope that it will be useful,

dnl but WITHOUT ANY WARRANTY; without even the implied warranty of

dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

dnl GNU General Public License for more details.

dnl

dnl You should have received a copy of the GNU General Public License

dnl along with this program; if not, write to the Free Software

dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

dnl

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

AC_INIT([GNU Awk],[4.2.1],[bug-gawk@gnu.org],[gawk])

# This is a hack. Different versions of install on different systems

# are just too different. Chuck it and use install-sh.

#

# If the user supplies $INSTALL, figure they know what they're doing.

#

# With Autoconf 2.5x, this needs to come very early on, but *after*

# the INIT macro. Sigh.

if test "$INSTALL" = ""

then

	INSTALL="$srcdir/install-sh -c"

	export INSTALL

fi

AC_PREREQ([2.69])

AM_INIT_AUTOMAKE([1.15 dist-xz dist-lzip])

AC_CONFIG_MACRO_DIR([m4])

dnl Additional argument stuff

AC_ARG_WITH(whiny-user-strftime,

	[AS_HELP_STRING([--with-whiny-user-strftime], [force use of included version of strftime for deficient systems])],

	if test "$withval" = yes

	then

		AC_DEFINE(USE_INCLUDED_STRFTIME, 1,

			  [force use of our version of strftime])

	fi

)

AC_ARG_ENABLE([lint],

	[AS_HELP_STRING([--disable-lint],[do not compile in gawk lint checking])],

	if test "$enableval" = no

	then

		AC_DEFINE(NO_LINT, 1, [disable lint checks])

	fi

)

AC_ARG_ENABLE([severe-portability-problems],

	[AS_HELP_STRING([--enable-severe-portability-problems],[allow really nasty portability problems])],

	if test "$enableval" = yes

	then

		AC_DEFINE(I_DONT_KNOW_WHAT_IM_DOING, 1, [enable severe portability problems])

	fi

)

AC_ARG_ENABLE([builtin-intdiv0],

	[AS_HELP_STRING([--enable-builtin-intdiv0],[enable built-in intdiv0 function])],

	if test "$enableval" = yes

	then

		AC_DEFINE(SUPPLY_INTDIV, 1, [enable built-in intdiv0 function])

		sed '/^@set PATCHLEVEL/a\

@set INTDIV' < "$srcdir"/doc/gawktexi.in > foo

		cp foo "$srcdir"/doc/gawktexi.in

		rm foo

	fi

)

SKIP_MPFR=no

AC_ARG_ENABLE([mpfr],

	[AS_HELP_STRING([--disable-mpfr],[do not check for MPFR])],

	if test "$enableval" = no

	then

		SKIP_MPFR=yes

	fi

)

EXTENSIONDIR=

AC_ARG_ENABLE([versioned-extension-dir],

	[AS_HELP_STRING([--enable-versioned-extension-dir], [use a versioned directory for extensions])],

	if test "$enableval" = yes

	then

		MAJOR=`awk '/define gawk_api_major_version/ { print $3 }' < $srcdir/gawkapi.h`

		MINOR=`awk '/define gawk_api_minor_version/ { print $3 }' < $srcdir/gawkapi.h`

		# note leading slash on the value

		export EXTENSIONDIR=/ext-$MAJOR.$MINOR

	fi

)

# set default shared library location

AC_SUBST([pkgextensiondir], ['${pkglibdir}'${EXTENSIONDIR}])

AC_CANONICAL_HOST

AC_USE_SYSTEM_EXTENSIONS

dnl checks for programs

AC_PROG_EGREP

AC_PROG_YACC

AC_PROG_LN_S

AC_PROG_CC_C99

AC_PROG_CPP

AC_PROG_RANLIB

AC_OBJEXT

AC_EXEEXT

AC_PROG_INSTALL

AC_PROG_MAKE_SET

# This is mainly for my use during testing and development.

# Yes, it's a bit of a hack.

AC_MSG_CHECKING([for special development options])

if test -f $srcdir/.developing

then

	# add other debug flags as appropriate, save GAWKDEBUG for emergencies

	CFLAGS="$CFLAGS -DARRAYDEBUG -DYYDEBUG -DLOCALEDEBUG"

	# turn on compiler warnings if we're doing development

	# enable debugging using macros also

	if test "$GCC" = yes

	then

		CFLAGS="$CFLAGS -Wall -fno-builtin -g3"

	fi

	AC_MSG_RESULT([yes])

else

	AC_MSG_RESULT([no])

	CFLAGS="$CFLAGS -DNDEBUG"	# turn off assertions

fi

AC_SUBST(CFLAGS)

# shared library suffix for dynamic loading:

AC_SUBST(acl_shlibext)

dnl checks for systems

AC_ZOS_USS

AC_SEARCH_LIBS([strerror],[cposix])

AC_SYS_LARGEFILE

AC_MSG_CHECKING([if we are using EBCDIC])

AC_EGREP_CPP([gnu_gawk_in_ebcdic],

[#if 'a' == 0x81

gnu_gawk_in_ebcdic

#endif],

[AC_DEFINE(USE_EBCDIC, 1, Define to 1 if the character set is EBCDIC)

 use_ebcdic=yes],

[use_ebcdic=no])

AC_MSG_RESULT([$use_ebcdic])

dnl Set the programming language for checks. Fortunately,

dnl this only needs to be set once, since everything is in C.

AC_LANG([C])

dnl initialize GNU gettext

AM_GNU_GETTEXT([external])

AM_GNU_GETTEXT_VERSION([0.19.7])

AM_LANGINFO_CODESET

gt_LC_MESSAGES

dnl checks for header files

AC_CHECK_HEADERS(arpa/inet.h fcntl.h limits.h locale.h libintl.h mcheck.h \

	netdb.h netinet/in.h stdarg.h stddef.h string.h \

	sys/ioctl.h sys/param.h sys/select.h sys/socket.h sys/time.h unistd.h \

	termios.h stropts.h wchar.h wctype.h)

AC_HEADER_STDC

AC_HEADER_STDBOOL

AC_HEADER_SYS_WAIT

AC_HEADER_TIME

if test "$ac_cv_header_string_h" = yes

then

	AC_CHECK_HEADERS(memory.h)

else

	AC_CHECK_HEADERS(strings.h)

fi

dnl Check cross compiling

AM_CONDITIONAL([TEST_CROSS_COMPILE], [test "$build_alias" != "$host_alias"])

dnl checks for typedefs

AC_TYPE_PID_T

AC_TYPE_SIZE_T

AC_TYPE_GETGROUPS

AC_TYPE_LONG_LONG_INT

AC_TYPE_UNSIGNED_LONG_LONG_INT

AC_TYPE_INTMAX_T

AC_TYPE_UINTMAX_T

AC_CHECK_TYPE(ssize_t, int)

AC_CHECK_SIZEOF(unsigned int)

AC_CHECK_SIZEOF(unsigned long)

dnl see if time_t is defined in <sys/types.h>

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>]], [[

	time_t foo;

	foo = 0;

]])],[AC_DEFINE(TIME_T_IN_SYS_TYPES_H, 1,

		  some systems define this type here)],[])

dnl check for wctype_t in <wctype.h>

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <wctype.h>]], [[

	wctype_t foo;

	foo = 0;

]])],[AC_DEFINE(HAVE_WCTYPE_T, 1, systems should define this type here)],[])

dnl check for wint_t in <wctype.h>

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <wctype.h>]], [[

	wint_t foo;

	foo = 0;

]])],[AC_DEFINE(HAVE_WINT_T, 1, systems should define this type here)],[])

dnl check for sockaddr_storage

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>

#include <sys/socket.h>]], [[

	struct sockaddr_storage foo;

]])],[AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1, newer systems define this type here)],[])

dnl Borrwed from rsync, thanks to to Jim Meyering.

dnl Check for socklen_t: historically on BSD it is an int, and in

dnl POSIX 1g it is a type of its own, but some platforms use different

dnl types for the argument to getsockopt, getpeername, etc.  So we

dnl have to test to find something that will work.

dnl This is no good, because passing the wrong pointer on C compilers is

dnl likely to only generate a warning, not an error.

AC_DEFUN([TYPE_SOCKLEN_T],

[

   AC_CHECK_TYPE([socklen_t], ,[

      AC_MSG_CHECKING([for socklen_t equivalent])

      AC_CACHE_VAL([rsync_cv_socklen_t_equiv],

      [

         # Systems have either "struct sockaddr *" or

         # "void *" as the second argument to getpeername

         rsync_cv_socklen_t_equiv=

         for arg2 in "struct sockaddr" void

	 do

            for t in int size_t unsigned long "unsigned long"

	    do

               AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#include <sys/types.h>

#include <sys/socket.h>

                  int getpeername (int, $arg2 *, $t *);

               ]], [[

                  $t len;

                  getpeername(0,0,&len;;

               ]])],[

                  rsync_cv_socklen_t_equiv="$t"

                  break

               ],[])

            done

         done

         if test "$rsync_cv_socklen_t_equiv" = ""

	 then

dnl		Some systems get this. Default to int.  -- ADR

dnl            AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])

		rsync_cv_socklen_t_equiv=int

         fi

      ])

      AC_MSG_RESULT($rsync_cv_socklen_t_equiv)

      AC_DEFINE_UNQUOTED(socklen_t, $rsync_cv_socklen_t_equiv,

			[type to use in place of socklen_t if not defined])],

      [#include <sys/types.h>

#include <sys/socket.h>])

])

TYPE_SOCKLEN_T

dnl Check for C11 _Noreturn

GAWK_AC_NORETURN

dnl checks for functions

AC_FUNC_MKTIME

case "$ac_cv_func_working_mktime" in

yes)	AC_DEFINE(HAVE_MKTIME, 1, [we have the mktime function])

	;;

esac

AC_CHECK_FUNC(getaddrinfo, [AC_DEFINE(HAVE_GETADDRINFO, 1, [have getaddrinfo])],

	      [AC_CHECK_LIB(socket, getaddrinfo,

			    [AC_DEFINE(HAVE_GETADDRINFO, 1,

				       [have getaddrinfo])])])

AC_SEARCH_LIBS(fmod, m)

AC_SEARCH_LIBS(isinf, m)

AC_SEARCH_LIBS(ismod, m)

dnl Don't look for libsigsegv on OSF/1, gives us severe headaches

case $host_os in

osf1)	: ;;

*)

	gl_LIBSIGSEGV

	;;

esac

# Need the check for mkstemp and tmpfile for missing_d/snprintf.c.

AC_CHECK_FUNCS(__etoa_l atexit btowc fmod gai_strerror \

	getgrent getgroups grantpt \

	fwrite_unlocked \

	isascii iswctype iswlower iswupper mbrlen \

	memcmp memcpy memcpy_ulong memmove memset \

	memset_ulong mkstemp posix_openpt setenv setlocale setsid sigprocmask \

	snprintf strchr \

	strerror strftime strcasecmp strncasecmp strcoll strtod strtoul \

	system tmpfile towlower towupper tzset usleep waitpid wcrtomb \

	wcscoll wctype)

dnl this check is for both mbrtowc and the mbstate_t type, which is good

AC_FUNC_MBRTOWC

dnl check for dynamic linking

dnl This is known to be very primitive

AC_ARG_ENABLE([extensions],

	[AS_HELP_STRING([--disable-extensions], [disable dynamic extensions (default is detect)])])

if test "$enable_extensions" != "no"

then

	extensions_supported=no

	dnl On MirBSD (and probably other systems), don't even try.

	case $host_os in

	mirbsd* | openedition*)	# OS/390 z/OS POSIX layer

		;;

	*)

	AC_CHECK_HEADER(dlfcn.h,

		[

		# Check this separately. Some systems have dlopen

		# in libc. Notably freebsd and cygwin.

		# HP-NSK has it in zrldsrl

		AC_SEARCH_LIBS(dlopen, dl zrldsrl, gawk_have_dlopen=yes, gawk_have_dlopen=no)

		# Only do DYNAMIC if we have the lib. z/OS (some versions) have

		# the header but not the lib, apparently

		if test "$gawk_have_dlopen" = yes

		then

			extensions_supported=yes

			AC_DEFINE([DYNAMIC], 1, [dynamic loading is possible])

		fi

	])

		;;

	esac

	if test "$enable_extensions$extensions_supported" = "yesno"

	then

		AC_MSG_ERROR([extension support requested, but unavailable])

	fi

	enable_extensions=$extensions_supported

fi

AM_CONDITIONAL([ENABLE_EXTENSIONS], [test "$enable_extensions" = "yes"])

dnl check for how to use getpgrp

dnl have to hardwire it for VMS POSIX. Sigh.

dnl ditto for BeOS, OS/2, and MS-DOS.

case $host_os in

vms*|beos*|os2*|msdos)

	AC_DEFINE(GETPGRP_VOID, 1,

	  [Define to 1 if the getpgrp function requires zero arguments.])

	;;

*)	AC_FUNC_GETPGRP

	;;

esac

dnl check for printf %F format

AC_MSG_CHECKING([for printf %F format])

AC_RUN_IFELSE([

AC_LANG_SOURCE([

#include <stdio.h>

int main()

{

	char buf[[100]];

	sprintf(buf, "%F", 123.45);

	if (strcmp(buf, "123.450000") == 0)

		return 0;

	else

		return 1;

}

])],

	has_f_format=yes,

	has_f_format=no,

	has_f_format=no  dnl Cross-compiling, assuming the worst.

)

if test "$has_f_format" = yes

then

	AC_DEFINE(PRINTF_HAS_F_FORMAT, 1, [Define to 1 if *printf supports %F format])

fi

AC_MSG_RESULT($has_f_format)

dnl check for sockets

GAWK_AC_LIB_SOCKETS

dnl check for readline support

GAWK_CHECK_READLINE

dnl check for mpfr support

case `uname -m` in

*'Power Macintosh'*)

	: ;;

*)

	case $SKIP_MPFR in

	no)	GNUPG_CHECK_MPFR

		;;

	esac

	;;

esac

dnl checks for structure members

AC_CHECK_MEMBERS([struct stat.st_blksize])

AC_CHECK_MEMBERS([struct passwd.pw_passwd],,,[

#include <sys/types.h>

#include <pwd.h>

])

AC_CHECK_MEMBERS([struct group.gr_passwd],,,[

#include <sys/types.h>

#include <grp.h>

])

AC_STRUCT_TM

AC_STRUCT_TIMEZONE

dnl checks for compiler characteristics

AC_C_CHAR_UNSIGNED

AC_C_CONST

AC_C_RESTRICT

AC_C_INLINE

AC_C_STRINGIZE

AC_CONFIG_HEADERS([config.h:configh.in])

AH_BOTTOM([#include "custom.h"])

dnl Crude but small hack to make plug-ins work on Mac OS X

dnl We should really use the libtool value for shrext_cmds, but that

dnl is not available here, since we do not use libtool at the top level.

case $acl_shlibext in

dylib)	GAWKLIBEXT=so ;;	# MacOS uses .dylib for shared libraries, but libtool uses .so for modules

*) GAWKLIBEXT=$acl_shlibext ;;

esac

AC_SUBST(GAWKLIBEXT)

AC_CONFIG_FILES(Makefile

	support/Makefile

	awklib/Makefile

	doc/Makefile

	extras/Makefile

	po/Makefile.in

	test/Makefile)

if test "$enable_extensions" = "yes"

then

	AC_CONFIG_SUBDIRS(extension)

fi

AC_OUTPUT