libf2c/libI77/configure.in - gcc - Git at Google

 # Process this file with autoconf to produce a configure script.
 #   Copyright (C) 1995, 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
 #   Contributed by Dave Love (d.love@dl.ac.uk).
 #
 #This file is part of GNU Fortran.
 #
 #GNU Fortran is free software; you can redistribute it and/or modify
 #it under the terms of the GNU General Public License as published by
 #the Free Software Foundation; either version 2, or (at your option)
 #any later version.
 #
 #GNU Fortran is distributed in the hope that it will be useful,
 #but WITHOUT ANY WARRANTY; without even the implied warranty of
 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #GNU General Public License for more details.
 #
 #You should have received a copy of the GNU General Public License
 #along with GNU Fortran; see the file COPYING.  If not, write to
 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #02111-1307, USA.

 AC_PREREQ(2.13)
 AC_INIT(ftell_.c)
 AC_CONFIG_HEADER(config.h)

 dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
 dnl not be able to.
 define([AC_PROG_CC_WORKS],[])

 # For g77 we'll set CC to point at the built gcc, but this will get it into
 # the makefiles
 AC_PROG_CC

 # These defines are necessary to get 64-bit file size support.
 # NetBSD 1.4 header files does not support XOPEN_SOURCE == 600, but it
 # handles 64-bit file sizes without needing these defines.
 AC_MSG_CHECKING(whether _XOPEN_SOURCE may be defined)
 AC_TRY_COMPILE([#define _XOPEN_SOURCE 600L
 #include <unistd.h>],,
 may_use_xopen_source=yes,
 may_use_xopen_source=no)
 AC_MSG_RESULT($may_use_xopen_source)
 if test $may_use_xopen_source = yes; then
   AC_DEFINE(_XOPEN_SOURCE, 600L, [Get Single Unix Specification semantics])
   # The following is needed by irix6.2 so that struct timeval is declared.
   AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Get Single Unix Specification semantics])
   # The following is needed by Solaris2.5.1 so that struct timeval is declared.
   AC_DEFINE(__EXTENSIONS__, 1, [Solaris extensions])
   AC_DEFINE(_FILE_OFFSET_BITS, 64, [Get 64-bit file size support])
   AC_DEFINE(_LARGEFILE_SOURCE, 1, [Define for HP-UX ftello and fseeko extension.])
 fi

 dnl Checks for programs.

 LIBTOOL='$(SHELL) ../libtool'
 AC_SUBST(LIBTOOL)

 test "$AR" || AR=ar
 AC_SUBST(AR)
 AC_PROG_MAKE_SET

 dnl Checks for libraries.

 dnl Checks for header files.
 # Sanity check for the cross-compilation case:
 AC_CHECK_HEADER(stdio.h,:,
   [AC_MSG_ERROR([Can't find stdio.h.
 You must have a usable C system for the target already installed, at least
 including headers and, preferably, the library, before you can configure
 the G77 runtime system.  If necessary, install gcc now with \`LANGUAGES=c',
 then the target library, then build with \`LANGUAGES=f77'.])])

 AC_HEADER_STDC
 AC_MSG_CHECKING(for posix)
 AC_CACHE_VAL(g77_cv_header_posix,
   AC_EGREP_CPP(yes,
   [#include <sys/types.h>
 #include <unistd.h>
 #ifdef _POSIX_VERSION
   yes
 #endif
 ],
   g77_cv_header_posix=yes,
   g77_cv_header_posix=no))
 AC_MSG_RESULT($g77_cv_header_posix)

 # We can rely on the GNU library being posix-ish.  I guess checking the
 # header isn't actually like checking the functions, though...
 AC_MSG_CHECKING(for GNU library)
 AC_CACHE_VAL(g77_cv_lib_gnu,
   AC_EGREP_CPP(yes,
     [#include <stdio.h>
 #ifdef __GNU_LIBRARY__
   yes
 #endif
 ],
   g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
 AC_MSG_RESULT($g77_cv_lib_gnu)

 # Apparently cygwin needs to be special-cased.
 AC_MSG_CHECKING([for cyg\`win'32])
 AC_CACHE_VAL(g77_cv_sys_cygwin32,
   AC_EGREP_CPP(yes,
   [#ifdef __CYGWIN32__
   yes
 #endif
 ],
   g77_cv_sys_cygwin32=yes,
   g77_cv_sys_cygwin32=no))
 AC_MSG_RESULT($g77_cv_sys_cygwin32)

 # ditto for mingw32.
 AC_MSG_CHECKING([for mingw32])
 AC_CACHE_VAL(g77_cv_sys_mingw32,
   AC_EGREP_CPP(yes,
   [#ifdef __MINGW32__
   yes
 #endif
 ],
   g77_cv_sys_mingw32=yes,
   g77_cv_sys_mingw32=no))
 AC_MSG_RESULT($g77_cv_sys_mingw32)


 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_TYPE_SIZE_T

 dnl Checks for library functions.

 # This should always succeed on unix.
 # Apparently positive result on cygwin loses re. NON_UNIX_STDIO
 # (as of cygwin b18). Likewise on mingw.
 AC_CHECK_FUNC(fstat)
 AC_MSG_CHECKING([need for NON_UNIX_STDIO])
 if test $g77_cv_sys_cygwin32 = yes \
   || test $g77_cv_sys_mingw32 = yes \
   || test $ac_cv_func_fstat = no; then
   AC_MSG_RESULT(yes)
   AC_DEFINE(NON_UNIX_STDIO, 1, [Define if we do not have Unix Stdio.])
 else
   AC_MSG_RESULT(no)
 fi

 AC_CHECK_FUNCS(fseeko)
 AC_CHECK_FUNCS(ftello)
 AC_CHECK_FUNCS(ftruncate)
 AC_CHECK_FUNCS(mkstemp)
 AC_CHECK_FUNCS(tempnam)
 AC_CHECK_FUNCS(tmpnam)

 # posix will guarantee the right behaviour for sprintf, else we can't be
 # sure; HEADER_STDC wouldn't be the right check in sunos4, for instance.
 # However, on my sunos4/gcc setup unistd.h leads us wrongly to believe
 # we're posix-conformant, so always do the test.
 AC_MSG_CHECKING(for ansi/posix sprintf result)
 dnl This loses if included as an argument to AC_CACHE_VAL because the
 dnl changequote doesn't take effect and the [] vanish.
 dnl fixme: use cached value
 AC_TRY_RUN(changequote(<<, >>)dnl
   <<#include <stdio.h>
     /* does sprintf return the number of chars transferred? */
     main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);}
 >>changequote([, ]),
     g77_cv_sys_sprintf_ansi=yes,
     g77_cv_sys_sprintf_ansi=no,
     g77_cv_sys_sprintf_ansi=no)
 AC_CACHE_VAL(g77_cv_sys_sprintf_ansi,
      g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi)
 dnl We get a misleading `(cached)' message...
 AC_MSG_RESULT($g77_cv_sys_sprintf_ansi)

 # The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't
 # understand why.
 if test $g77_cv_sys_sprintf_ansi != yes; then
   AC_DEFINE(USE_STRLEN, 1, [Define if we use strlen.])
 fi

 # define NON_ANSI_RW_MODES on unix (can't hurt)
 AC_MSG_CHECKING(NON_ANSI_RW_MODES)
 AC_EGREP_CPP(yes,
 [#ifdef unix
   yes
 #endif
 #ifdef __unix
   yes
 #endif
 #ifdef __unix__
   yes
 #endif
 ], is_unix=yes, is_unix=no)
 # NON_ANSI_RW_MODES shouldn't be necessary on cygwin for binary mounts.
 if test $g77_cv_sys_cygwin32 = yes || test $g77_cv_sys_mingw32 = yes; then
   AC_MSG_RESULT(no)
 else
   if test $is_unix = yes; then
     AC_DEFINE(NON_ANSI_RW_MODES, 1, [Define if we have non ANSI RW modes.])
     AC_MSG_RESULT(yes)
   else
     AC_MSG_RESULT(no)
   fi
 fi

 # This EOF_CHAR is a misfeature on unix.
 AC_DEFINE(NO_EOF_CHAR_CHECK, 1, [Always defined.])

 AC_TYPE_OFF_T

 AC_DEFINE(Skip_f2c_Undefs, 1, [Define to skip f2c undefs.])

 AC_OUTPUT(Makefile)

 dnl We might have configuration options to:
 dnl * change unit preconnexion in err.c (f_init.c)
 dnl * -DALWAYS_FLUSH
 dnl * -DOMIT_BLANK_CC

 dnl Local Variables:
 dnl comment-start: "dnl "
 dnl comment-end: ""
 dnl comment-start-skip: "\\bdnl\\b\\s *"
 dnl End:
	# Process this file with autoconf to produce a configure script.
	# Copyright (C) 1995, 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
	# Contributed by Dave Love (d.love@dl.ac.uk).
	#
	#This file is part of GNU Fortran.
	#
	#GNU Fortran is free software; you can redistribute it and/or modify
	#it under the terms of the GNU General Public License as published by
	#the Free Software Foundation; either version 2, or (at your option)
	#any later version.
	#
	#GNU Fortran is distributed in the hope that it will be useful,
	#but WITHOUT ANY WARRANTY; without even the implied warranty of
	#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	#GNU General Public License for more details.
	#
	#You should have received a copy of the GNU General Public License
	#along with GNU Fortran; see the file COPYING. If not, write to
	#the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	#02111-1307, USA.

	AC_PREREQ(2.13)
	AC_INIT(ftell_.c)
	AC_CONFIG_HEADER(config.h)

	dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
	dnl not be able to.
	define([AC_PROG_CC_WORKS],[])

	# For g77 we'll set CC to point at the built gcc, but this will get it into
	# the makefiles
	AC_PROG_CC

	# These defines are necessary to get 64-bit file size support.
	# NetBSD 1.4 header files does not support XOPEN_SOURCE == 600, but it
	# handles 64-bit file sizes without needing these defines.
	AC_MSG_CHECKING(whether _XOPEN_SOURCE may be defined)
	AC_TRY_COMPILE([#define _XOPEN_SOURCE 600L
	#include <unistd.h>],,
	may_use_xopen_source=yes,
	may_use_xopen_source=no)
	AC_MSG_RESULT($may_use_xopen_source)
	if test $may_use_xopen_source = yes; then
	AC_DEFINE(_XOPEN_SOURCE, 600L, [Get Single Unix Specification semantics])
	# The following is needed by irix6.2 so that struct timeval is declared.
	AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Get Single Unix Specification semantics])
	# The following is needed by Solaris2.5.1 so that struct timeval is declared.
	AC_DEFINE(__EXTENSIONS__, 1, [Solaris extensions])
	AC_DEFINE(_FILE_OFFSET_BITS, 64, [Get 64-bit file size support])
	AC_DEFINE(_LARGEFILE_SOURCE, 1, [Define for HP-UX ftello and fseeko extension.])
	fi

	dnl Checks for programs.

	LIBTOOL='$(SHELL) ../libtool'
	AC_SUBST(LIBTOOL)

	test "$AR" \|\| AR=ar
	AC_SUBST(AR)
	AC_PROG_MAKE_SET

	dnl Checks for libraries.

	dnl Checks for header files.
	# Sanity check for the cross-compilation case:
	AC_CHECK_HEADER(stdio.h,:,
	[AC_MSG_ERROR([Can't find stdio.h.
	You must have a usable C system for the target already installed, at least
	including headers and, preferably, the library, before you can configure
	the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
	then the target library, then build with \`LANGUAGES=f77'.])])

	AC_HEADER_STDC
	AC_MSG_CHECKING(for posix)
	AC_CACHE_VAL(g77_cv_header_posix,
	AC_EGREP_CPP(yes,
	[#include <sys/types.h>
	#include <unistd.h>
	#ifdef _POSIX_VERSION
	yes
	#endif
	],
	g77_cv_header_posix=yes,
	g77_cv_header_posix=no))
	AC_MSG_RESULT($g77_cv_header_posix)

	# We can rely on the GNU library being posix-ish. I guess checking the
	# header isn't actually like checking the functions, though...
	AC_MSG_CHECKING(for GNU library)
	AC_CACHE_VAL(g77_cv_lib_gnu,
	AC_EGREP_CPP(yes,
	[#include <stdio.h>
	#ifdef __GNU_LIBRARY__
	yes
	#endif
	],
	g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
	AC_MSG_RESULT($g77_cv_lib_gnu)

	# Apparently cygwin needs to be special-cased.
	AC_MSG_CHECKING([for cyg\`win'32])
	AC_CACHE_VAL(g77_cv_sys_cygwin32,
	AC_EGREP_CPP(yes,
	[#ifdef __CYGWIN32__
	yes
	#endif
	],
	g77_cv_sys_cygwin32=yes,
	g77_cv_sys_cygwin32=no))
	AC_MSG_RESULT($g77_cv_sys_cygwin32)

	# ditto for mingw32.
	AC_MSG_CHECKING([for mingw32])
	AC_CACHE_VAL(g77_cv_sys_mingw32,
	AC_EGREP_CPP(yes,
	[#ifdef __MINGW32__
	yes
	#endif
	],
	g77_cv_sys_mingw32=yes,
	g77_cv_sys_mingw32=no))
	AC_MSG_RESULT($g77_cv_sys_mingw32)


	dnl Checks for typedefs, structures, and compiler characteristics.
	AC_C_CONST
	AC_TYPE_SIZE_T

	dnl Checks for library functions.

	# This should always succeed on unix.
	# Apparently positive result on cygwin loses re. NON_UNIX_STDIO
	# (as of cygwin b18). Likewise on mingw.
	AC_CHECK_FUNC(fstat)
	AC_MSG_CHECKING([need for NON_UNIX_STDIO])
	if test $g77_cv_sys_cygwin32 = yes \
	\|\| test $g77_cv_sys_mingw32 = yes \
	\|\| test $ac_cv_func_fstat = no; then
	AC_MSG_RESULT(yes)
	AC_DEFINE(NON_UNIX_STDIO, 1, [Define if we do not have Unix Stdio.])
	else
	AC_MSG_RESULT(no)
	fi

	AC_CHECK_FUNCS(fseeko)
	AC_CHECK_FUNCS(ftello)
	AC_CHECK_FUNCS(ftruncate)
	AC_CHECK_FUNCS(mkstemp)
	AC_CHECK_FUNCS(tempnam)
	AC_CHECK_FUNCS(tmpnam)

	# posix will guarantee the right behaviour for sprintf, else we can't be
	# sure; HEADER_STDC wouldn't be the right check in sunos4, for instance.
	# However, on my sunos4/gcc setup unistd.h leads us wrongly to believe
	# we're posix-conformant, so always do the test.
	AC_MSG_CHECKING(for ansi/posix sprintf result)
	dnl This loses if included as an argument to AC_CACHE_VAL because the
	dnl changequote doesn't take effect and the [] vanish.
	dnl fixme: use cached value
	AC_TRY_RUN(changequote(<<, >>)dnl
	<<#include <stdio.h>
	/* does sprintf return the number of chars transferred? */
	main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);}
	>>changequote([, ]),
	g77_cv_sys_sprintf_ansi=yes,
	g77_cv_sys_sprintf_ansi=no,
	g77_cv_sys_sprintf_ansi=no)
	AC_CACHE_VAL(g77_cv_sys_sprintf_ansi,
	g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi)
	dnl We get a misleading `(cached)' message...
	AC_MSG_RESULT($g77_cv_sys_sprintf_ansi)

	# The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't
	# understand why.
	if test $g77_cv_sys_sprintf_ansi != yes; then
	AC_DEFINE(USE_STRLEN, 1, [Define if we use strlen.])
	fi

	# define NON_ANSI_RW_MODES on unix (can't hurt)
	AC_MSG_CHECKING(NON_ANSI_RW_MODES)
	AC_EGREP_CPP(yes,
	[#ifdef unix
	yes
	#endif
	#ifdef __unix
	yes
	#endif
	#ifdef __unix__
	yes
	#endif
	], is_unix=yes, is_unix=no)
	# NON_ANSI_RW_MODES shouldn't be necessary on cygwin for binary mounts.
	if test $g77_cv_sys_cygwin32 = yes \|\| test $g77_cv_sys_mingw32 = yes; then
	AC_MSG_RESULT(no)
	else
	if test $is_unix = yes; then
	AC_DEFINE(NON_ANSI_RW_MODES, 1, [Define if we have non ANSI RW modes.])
	AC_MSG_RESULT(yes)
	else
	AC_MSG_RESULT(no)
	fi
	fi

	# This EOF_CHAR is a misfeature on unix.
	AC_DEFINE(NO_EOF_CHAR_CHECK, 1, [Always defined.])

	AC_TYPE_OFF_T

	AC_DEFINE(Skip_f2c_Undefs, 1, [Define to skip f2c undefs.])

	AC_OUTPUT(Makefile)

	dnl We might have configuration options to:
	dnl * change unit preconnexion in err.c (f_init.c)
	dnl * -DALWAYS_FLUSH
	dnl * -DOMIT_BLANK_CC

	dnl Local Variables:
	dnl comment-start: "dnl "
	dnl comment-end: ""
	dnl comment-start-skip: "\\bdnl\\b\\s *"
	dnl End: