[gcc.git] / libf2c / configure.in

# Process this file with autoconf to produce a configure script.
#   Copyright (C) 1995, 1997 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_INIT(libF77/Version.c)

AC_REVISION(1.11)

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

dnl These should be inherited in the recursive make, but ensure they are
dnl defined:
test "$AR" || AR=ar
AC_SUBST(AR)
if test "$RANLIB"; then :
  AC_SUBST(RANLIB)
dnl Make sure that RANLIB_TEST is set also.
  if test -z "$RANLIB_TEST"; then
    RANLIB_TEST=true
  fi
else
  RANLIB_TEST=true
  AC_PROG_RANLIB
fi
AC_SUBST(RANLIB_TEST)

dnl not needed for g77?
dnl 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
dnl We could do this if we didn't know we were using gcc
dnl AC_MSG_CHECKING(for prototype-savvy compiler)
dnl AC_CACHE_VAL(g77_cv_sys_proto,                
dnl   [AC_TRY_LINK(,                             
dnl dnl looks screwy because TRY_LINK expects a function body
dnl    [return 0;} int foo (int * bar) {],       
dnl    g77_cv_sys_proto=yes,                      
dnl    [g77_cv_sys_proto=no                       
dnl     AC_DEFINE(KR_headers)])])                
dnl AC_MSG_RESULT($g77_cv_sys_proto)              

dnl for U77
dnl AC_CHECK_HEADERS(unistd.h)

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)


AC_CHECK_HEADER(fcntl.h,
   test $g77_cv_header_posix = yes && AC_DEFINE(_POSIX_SOURCE),
   AC_DEFINE(NO_FCNTL) AC_DEFINE(OPEN_DECL))

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

dnl Checks for library functions.
AC_TYPE_SIGNAL
# we'll get atexit by default
if test $ac_cv_header_stdc != yes; then
AC_CHECK_FUNC(atexit,
  AC_DEFINE(onexit,atexit),dnl just in case
  [AC_DEFINE(NO_ONEXIT)
  AC_CHECK_FUNC(onexit,,
    [AC_CHECK_FUNC(on_exit,
     AC_DEFINE(onexit,on_exit),)])])
else true
fi

# 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)
else
  AC_MSG_RESULT(no)
fi

# This is necessary for e.g. Linux:
AC_MSG_CHECKING([for necessary members of struct FILE])
AC_CACHE_VAL(g77_cv_struct_FILE,
[AC_TRY_COMPILE([#include <stdio.h>],
  [FILE s; s._ptr; s._base; s._flag;],g77_cv_struct_FILE=yes,
  g77_cv_struct_FILE=no)])dnl
AC_MSG_RESULT($g77_cv_struct_FILE)
if test $g77_cv_struct_FILE = no; then
  AC_DEFINE(MISSING_FILE_ELEMS)
fi

dnl perhaps should check also for remainder
dnl Unfortunately, the message implies we're just checking for -lm...
AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem))

dnl for U77:
dnl AC_CHECK_FUNCS(symlink getcwd lstat)
dnl test $ac_cv_func_symlink = yes && SYMLNK=symlnk_.o
dnl test $ac_cv_func_lstat = yes && SYMLNK="$SYMLNK lstat_.o"
dnl AC_SUBST(SYMLNK)

AC_CHECK_FUNCS(tempnam)

# 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)
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)
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)
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
  fi
fi

# We have to firkle with the info in hconfig.h to figure out suitable types
# (via com.h).  proj.h and com.h are in $srcdir/.., config.h which they need
# is in ../.. and the config files are in $srcdir/../../config.
AC_MSG_CHECKING(f2c integer type)
late_ac_cpp=$ac_cpp
ac_cpp="$late_ac_cpp -I../../gcc/f  -I../../gcc -I../../gcc/config"
if test "$subdir" != . ; then
  ac_cpp="$ac_cpp -I$srcdir/../gcc/f -I$srcdir/../gcc -I$srcdir/../gcc/config"
fi
AC_CACHE_VAL(g77_cv_sys_f2cinteger,
echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
AC_EGREP_CPP(F2C_INTEGER=long int,
[#include "proj.h"
#define FFECOM_DETERMINE_TYPES 1
#include "com.h"
#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
F2C_INTEGER=long int
#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
F2C_INTEGER=int
#else
#  error "Cannot find a suitable type for F2C_INTEGER"
#endif
],
 g77_cv_sys_f2cinteger="long int",)
if test "$g77_cv_sys_f2cinteger" = ""; then
echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
  AC_EGREP_CPP(F2C_INTEGER=int,
[#include "proj.h"
#define FFECOM_DETERMINE_TYPES 1
#include "com.h"
#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
F2C_INTEGER=long int
#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
F2C_INTEGER=int
#else
#  error "Cannot find a suitable type for F2C_INTEGER"
#endif
],
   g77_cv_sys_f2cinteger=int,)
fi
if test "$g77_cv_sys_f2cinteger" = ""; then
  AC_MSG_RESULT("")
  AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.])
fi
)
AC_MSG_RESULT($g77_cv_sys_f2cinteger)
F2C_INTEGER=$g77_cv_sys_f2cinteger
ac_cpp=$late_ac_cpp
AC_SUBST(F2C_INTEGER)

AC_MSG_CHECKING(f2c long int type)
late_ac_cpp=$ac_cpp
ac_cpp="$late_ac_cpp -I../../gcc/f  -I../../gcc -I../../gcc/config"
if test "$subdir" != . ; then
  ac_cpp="$ac_cpp -I$srcdir/../gcc/f -I$srcdir/../gcc -I$srcdir/../gcc/config"
fi
AC_CACHE_VAL(g77_cv_sys_f2clongint,
echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
AC_EGREP_CPP(F2C_LONGINT=long int,
[#include "proj.h"
#define FFECOM_DETERMINE_TYPES 1
#include "com.h"
#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
F2C_LONGINT=long int
#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
F2C_LONGINT=long long int
#else
#  error "Cannot find a suitable type for F2C_LONGINT"
#endif
],
 g77_cv_sys_f2clongint="long int",)
if test "$g77_cv_sys_f2clongint" = ""; then
echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
  AC_EGREP_CPP(F2C_LONGINT=long long int,
[#include "proj.h"
#define FFECOM_DETERMINE_TYPES 1
#include "com.h"
#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
F2C_LONGINT=long int
#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
F2C_LONGINT=long long int
#else
#  error "Cannot find a suitable type for F2C_LONGINT"
#endif
],
   g77_cv_sys_f2clongint="long long int",)
fi
if test "$g77_cv_sys_f2clongint" = ""; then
  AC_MSG_RESULT("")
  AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.])
fi
)
AC_MSG_RESULT($g77_cv_sys_f2clongint)
F2C_LONGINT=$g77_cv_sys_f2clongint
ac_cpp=$late_ac_cpp
AC_SUBST(F2C_LONGINT)

dnl maybe check for drem/remainder

# This EOF_CHAR is a misfeature on unix.
AC_DEFINE(NO_EOF_CHAR_CHECK)

AC_DEFINE(Skip_f2c_Undefs)

# avoid confusion in case the `makefile's from the f2c distribution have
# got put here
test -f libF77/makefile && mv libF77/makefile  libF77/makefile.ori
test -f libI77/makefile && mv libI77/makefile  libI77/makefile.ori
test -f libU77/makefile && mv libU77/makefile  libU77/makefile.ori

# Get the version number from the toplevel
if test x${with_gcc_version} = x; then
  # Try to get the version number from a hopefully existing gcc directory.
  if test -d ${srcdir}/../gcc; then
    gcc_version=`sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/' < ${srcdir}/../gcc/version.c`
  else
    gcc_version=UNKNOWN
  fi
else
  gcc_version=${with_gcc_version}
fi
AC_SUBST(gcc_version)
AC_CANONICAL_SYSTEM
AC_SUBST(target_alias)

AC_CONFIG_SUBDIRS(libU77)
AC_OUTPUT(Makefile g2c.h libI77/Makefile libF77/Makefile)

dnl We might have configuration options to:
dnl * change unit preconnexion in libI77/err.c (f_init.c)
dnl * -DALWAYS_FLUSH in libI77
dnl * -DOMIT_BLANK_CC in libI77

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl End:
Commit	Line	Data
81fea2b1 JL	1	# Process this file with autoconf to produce a configure script.
	2	# Copyright (C) 1995, 1997 Free Software Foundation, Inc.
	3	# Contributed by Dave Love (d.love@dl.ac.uk).
	4	#
	5	#This file is part of GNU Fortran.
	6	#
	7	#GNU Fortran is free software; you can redistribute it and/or modify
	8	#it under the terms of the GNU General Public License as published by
	9	#the Free Software Foundation; either version 2, or (at your option)
	10	#any later version.
	11	#
	12	#GNU Fortran is distributed in the hope that it will be useful,
	13	#but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	#GNU General Public License for more details.
	16	#
	17	#You should have received a copy of the GNU General Public License
	18	#along with GNU Fortran; see the file COPYING. If not, write to
	19	#the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	20	#02111-1307, USA.
	21
	22	AC_INIT(libF77/Version.c)
	23
f30bc2e7	24	AC_REVISION(1.11)
81fea2b1	25
f30bc2e7 CB	26	dnl Checks for programs.
	27	# For g77 we'll set CC to point at the built gcc, but this will get it into
	28	# the makefiles
	29	AC_PROG_CC
81fea2b1 JL	30
	31	dnl These should be inherited in the recursive make, but ensure they are
	32	dnl defined:
	33	test "$AR" \|\| AR=ar
	34	AC_SUBST(AR)
	35	if test "$RANLIB"; then :
	36	AC_SUBST(RANLIB)
	37	dnl Make sure that RANLIB_TEST is set also.
	38	if test -z "$RANLIB_TEST"; then
	39	RANLIB_TEST=true
	40	fi
	41	else
	42	RANLIB_TEST=true
	43	AC_PROG_RANLIB
	44	fi
	45	AC_SUBST(RANLIB_TEST)
	46
	47	dnl not needed for g77?
	48	dnl AC_PROG_MAKE_SET
	49
	50	dnl Checks for libraries.
	51
	52	dnl Checks for header files.
	53	# Sanity check for the cross-compilation case:
	54	AC_CHECK_HEADER(stdio.h,:,
	55	[AC_MSG_ERROR([Can't find stdio.h.
	56	You must have a usable C system for the target already installed, at least
	57	including headers and, preferably, the library, before you can configure
	58	the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
	59	then the target library, then build with \`LANGUAGES=f77'.])])
	60
	61	AC_HEADER_STDC
	62	dnl We could do this if we didn't know we were using gcc
	63	dnl AC_MSG_CHECKING(for prototype-savvy compiler)
	64	dnl AC_CACHE_VAL(g77_cv_sys_proto,
	65	dnl [AC_TRY_LINK(,
	66	dnl dnl looks screwy because TRY_LINK expects a function body
	67	dnl [return 0;} int foo (int * bar) {],
	68	dnl g77_cv_sys_proto=yes,
	69	dnl [g77_cv_sys_proto=no
	70	dnl AC_DEFINE(KR_headers)])])
	71	dnl AC_MSG_RESULT($g77_cv_sys_proto)
	72
	73	dnl for U77
	74	dnl AC_CHECK_HEADERS(unistd.h)
	75
	76	AC_MSG_CHECKING(for posix)
	77	AC_CACHE_VAL(g77_cv_header_posix,
	78	AC_EGREP_CPP(yes,
	79	[#include <sys/types.h>
	80	#include <unistd.h>
	81	#ifdef _POSIX_VERSION
	82	yes
	83	#endif
	84	],
	85	g77_cv_header_posix=yes,
	86	g77_cv_header_posix=no))
	87	AC_MSG_RESULT($g77_cv_header_posix)
	88
	89	# We can rely on the GNU library being posix-ish. I guess checking the
	90	# header isn't actually like checking the functions, though...
	91	AC_MSG_CHECKING(for GNU library)
	92	AC_CACHE_VAL(g77_cv_lib_gnu,
	93	AC_EGREP_CPP(yes,
94	[#include <stdio.h>
95	#ifdef __GNU_LIBRARY__
96	yes
97	#endif
98	],
99	g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
100	AC_MSG_RESULT($g77_cv_lib_gnu)
101
102	# Apparently cygwin needs to be special-cased.
103	AC_MSG_CHECKING([for cyg\`win'32])
104	AC_CACHE_VAL(g77_cv_sys_cygwin32,
105	AC_EGREP_CPP(yes,
106	[#ifdef __CYGWIN32__
107	yes
108	#endif
109	],
110	g77_cv_sys_cygwin32=yes,
111	g77_cv_sys_cygwin32=no))
112	AC_MSG_RESULT($g77_cv_sys_cygwin32)
113
114	# ditto for mingw32.
115	AC_MSG_CHECKING([for mingw32])
116	AC_CACHE_VAL(g77_cv_sys_mingw32,
117	AC_EGREP_CPP(yes,
118	[#ifdef __MINGW32__
119	yes
120	#endif
121	],
122	g77_cv_sys_mingw32=yes,
123	g77_cv_sys_mingw32=no))
124	AC_MSG_RESULT($g77_cv_sys_mingw32)
125
126
127	AC_CHECK_HEADER(fcntl.h,
128	test $g77_cv_header_posix = yes && AC_DEFINE(_POSIX_SOURCE),
129	AC_DEFINE(NO_FCNTL) AC_DEFINE(OPEN_DECL))
130
131	dnl Checks for typedefs, structures, and compiler characteristics.
132	AC_C_CONST
133	AC_TYPE_SIZE_T
134
135	dnl Checks for library functions.
136	AC_TYPE_SIGNAL
137	# we'll get atexit by default
138	if test $ac_cv_header_stdc != yes; then
139	AC_CHECK_FUNC(atexit,
140	AC_DEFINE(onexit,atexit),dnl just in case
141	[AC_DEFINE(NO_ONEXIT)
142	AC_CHECK_FUNC(onexit,,
143	[AC_CHECK_FUNC(on_exit,
144	AC_DEFINE(onexit,on_exit),)])])
145	else true
146	fi
147
148	# This should always succeed on unix.
149	# Apparently positive result on cygwin loses re. NON_UNIX_STDIO
150	# (as of cygwin b18). Likewise on mingw.
151	AC_CHECK_FUNC(fstat)
152	AC_MSG_CHECKING([need for NON_UNIX_STDIO])
153	if test $g77_cv_sys_cygwin32 = yes \
154	\|\| test $g77_cv_sys_mingw32 = yes \
155	\|\| test $ac_cv_func_fstat = no; then
156	AC_MSG_RESULT(yes)
157	AC_DEFINE(NON_UNIX_STDIO)
158	else
159	AC_MSG_RESULT(no)
160	fi
161
162	# This is necessary for e.g. Linux:
163	AC_MSG_CHECKING([for necessary members of struct FILE])
164	AC_CACHE_VAL(g77_cv_struct_FILE,
165	[AC_TRY_COMPILE([#include <stdio.h>],
166	[FILE s; s._ptr; s._base; s._flag;],g77_cv_struct_FILE=yes,
167	g77_cv_struct_FILE=no)])dnl
168	AC_MSG_RESULT($g77_cv_struct_FILE)
169	if test $g77_cv_struct_FILE = no; then
170	AC_DEFINE(MISSING_FILE_ELEMS)
171	fi
172
173	dnl perhaps should check also for remainder
174	dnl Unfortunately, the message implies we're just checking for -lm...
175	AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem))
176
177	dnl for U77:
178	dnl AC_CHECK_FUNCS(symlink getcwd lstat)
179	dnl test $ac_cv_func_symlink = yes && SYMLNK=symlnk_.o
180	dnl test $ac_cv_func_lstat = yes && SYMLNK="$SYMLNK lstat_.o"
181	dnl AC_SUBST(SYMLNK)
182
2731cc56 JL	183	AC_CHECK_FUNCS(tempnam)
2731cc56 JL	184
81fea2b1 JL	185	# posix will guarantee the right behaviour for sprintf, else we can't be
	186	# sure; HEADER_STDC wouldn't be the right check in sunos4, for instance.
	187	# However, on my sunos4/gcc setup unistd.h leads us wrongly to believe
	188	# we're posix-conformant, so always do the test.
	189	AC_MSG_CHECKING(for ansi/posix sprintf result)
	190	dnl This loses if included as an argument to AC_CACHE_VAL because the
	191	dnl changequote doesn't take effect and the [] vanish.
	192	dnl fixme: use cached value
	193	AC_TRY_RUN(changequote(<<, >>)dnl
	194	<<#include <stdio.h>
	195	/* does sprintf return the number of chars transferred? */
	196	main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);}
	197	>>changequote([, ]),
	198	g77_cv_sys_sprintf_ansi=yes,
	199	g77_cv_sys_sprintf_ansi=no,
	200	g77_cv_sys_sprintf_ansi=no)
	201	AC_CACHE_VAL(g77_cv_sys_sprintf_ansi,
	202	g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi)
	203	dnl We get a misleading `(cached)' message...
f30bc2e7 CB	204	AC_MSG_RESULT($g77_cv_sys_sprintf_ansi)
f30bc2e7 CB	205
81fea2b1 JL	206	# The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't
	207	# understand why.
	208	if test $g77_cv_sys_sprintf_ansi != yes; then
	209	AC_DEFINE(USE_STRLEN)
	210	fi
	211
	212	# define NON_ANSI_RW_MODES on unix (can't hurt)
	213	AC_MSG_CHECKING(NON_ANSI_RW_MODES)
	214	AC_EGREP_CPP(yes,
	215	[#ifdef unix
	216	yes
	217	#endif
	218	#ifdef __unix
	219	yes
	220	#endif
	221	#ifdef __unix__
	222	yes
	223	#endif
	224	], is_unix=yes, is_unix=no)
	225	if test $g77_cv_sys_cygwin32 = yes \|\| test $g77_cv_sys_mingw32 = yes; then
	226	AC_MSG_RESULT(no)
	227	else
	228	if test $is_unix = yes; then
	229	AC_DEFINE(NON_ANSI_RW_MODES)
	230	AC_MSG_RESULT(yes)
	231	else
	232	AC_MSG_RESULT(no)
	233	fi
	234	fi
	235
	236	# We have to firkle with the info in hconfig.h to figure out suitable types
	237	# (via com.h). proj.h and com.h are in $srcdir/.., config.h which they need
	238	# is in ../.. and the config files are in $srcdir/../../config.
	239	AC_MSG_CHECKING(f2c integer type)
	240	late_ac_cpp=$ac_cpp
8746c235 RH	241	ac_cpp="$late_ac_cpp -I../../gcc/f -I../../gcc -I../../gcc/config"
	242	if test "$subdir" != . ; then
	243	ac_cpp="$ac_cpp -I$srcdir/../gcc/f -I$srcdir/../gcc -I$srcdir/../gcc/config"
fcce69a9	244	fi
81fea2b1	245	AC_CACHE_VAL(g77_cv_sys_f2cinteger,
8746c235	246	echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
81fea2b1 JL	247	AC_EGREP_CPP(F2C_INTEGER=long int,
	248	[#include "proj.h"
	249	#define FFECOM_DETERMINE_TYPES 1
	250	#include "com.h"
	251	#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
	252	F2C_INTEGER=long int
	253	#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
	254	F2C_INTEGER=int
	255	#else
	256	# error "Cannot find a suitable type for F2C_INTEGER"
	257	#endif
	258	],
	259	g77_cv_sys_f2cinteger="long int",)
	260	if test "$g77_cv_sys_f2cinteger" = ""; then
8746c235	261	echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
81fea2b1 JL	262	AC_EGREP_CPP(F2C_INTEGER=int,
	263	[#include "proj.h"
	264	#define FFECOM_DETERMINE_TYPES 1
	265	#include "com.h"
	266	#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
	267	F2C_INTEGER=long int
	268	#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
	269	F2C_INTEGER=int
	270	#else
	271	# error "Cannot find a suitable type for F2C_INTEGER"
	272	#endif
	273	],
	274	g77_cv_sys_f2cinteger=int,)
	275	fi
	276	if test "$g77_cv_sys_f2cinteger" = ""; then
	277	AC_MSG_RESULT("")
	278	AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.])
	279	fi
	280	)
	281	AC_MSG_RESULT($g77_cv_sys_f2cinteger)
	282	F2C_INTEGER=$g77_cv_sys_f2cinteger
	283	ac_cpp=$late_ac_cpp
	284	AC_SUBST(F2C_INTEGER)
	285
	286	AC_MSG_CHECKING(f2c long int type)
	287	late_ac_cpp=$ac_cpp
8746c235 RH	288	ac_cpp="$late_ac_cpp -I../../gcc/f -I../../gcc -I../../gcc/config"
	289	if test "$subdir" != . ; then
	290	ac_cpp="$ac_cpp -I$srcdir/../gcc/f -I$srcdir/../gcc -I$srcdir/../gcc/config"
fcce69a9	291	fi
81fea2b1	292	AC_CACHE_VAL(g77_cv_sys_f2clongint,
8746c235	293	echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
81fea2b1 JL	294	AC_EGREP_CPP(F2C_LONGINT=long int,
	295	[#include "proj.h"
	296	#define FFECOM_DETERMINE_TYPES 1
	297	#include "com.h"
	298	#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
	299	F2C_LONGINT=long int
	300	#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
	301	F2C_LONGINT=long long int
	302	#else
	303	# error "Cannot find a suitable type for F2C_LONGINT"
	304	#endif
	305	],
	306	g77_cv_sys_f2clongint="long int",)
	307	if test "$g77_cv_sys_f2clongint" = ""; then
8746c235	308	echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
81fea2b1 JL	309	AC_EGREP_CPP(F2C_LONGINT=long long int,
	310	[#include "proj.h"
	311	#define FFECOM_DETERMINE_TYPES 1
	312	#include "com.h"
	313	#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
	314	F2C_LONGINT=long int
	315	#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
	316	F2C_LONGINT=long long int
	317	#else
	318	# error "Cannot find a suitable type for F2C_LONGINT"
	319	#endif
	320	],
	321	g77_cv_sys_f2clongint="long long int",)
	322	fi
	323	if test "$g77_cv_sys_f2clongint" = ""; then
	324	AC_MSG_RESULT("")
	325	AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.])
	326	fi
	327	)
	328	AC_MSG_RESULT($g77_cv_sys_f2clongint)
	329	F2C_LONGINT=$g77_cv_sys_f2clongint
	330	ac_cpp=$late_ac_cpp
	331	AC_SUBST(F2C_LONGINT)
	332
	333	dnl maybe check for drem/remainder
	334
81fea2b1 JL	335	# This EOF_CHAR is a misfeature on unix.
	336	AC_DEFINE(NO_EOF_CHAR_CHECK)
	337
	338	AC_DEFINE(Skip_f2c_Undefs)
	339
81fea2b1 JL	340	# avoid confusion in case the `makefile's from the f2c distribution have
	341	# got put here
	342	test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
	343	test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
	344	test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
	345
487eb4b8	346	# Get the version number from the toplevel
6174dcf3 MH	347	if test x${with_gcc_version} = x; then
	348	# Try to get the version number from a hopefully existing gcc directory.
	349	if test -d ${srcdir}/../gcc; then
	350	gcc_version=`sed -e 's/.\"\([[^ \"]]\)[[ \"]].*/\1/' < ${srcdir}/../gcc/version.c`
	351	else
	352	gcc_version=UNKNOWN
	353	fi
	354	else
	355	gcc_version=${with_gcc_version}
	356	fi
	357	AC_SUBST(gcc_version)
487eb4b8 JL	358	AC_CANONICAL_SYSTEM
	359	AC_SUBST(target_alias)
	360
81fea2b1	361	AC_CONFIG_SUBDIRS(libU77)
f30bc2e7	362	AC_OUTPUT(Makefile g2c.h libI77/Makefile libF77/Makefile)
81fea2b1 JL	363
81fea2b1 JL	364	dnl We might have configuration options to:
81fea2b1 JL	365	dnl * change unit preconnexion in libI77/err.c (f_init.c)
	366	dnl * -DALWAYS_FLUSH in libI77
	367	dnl * -DOMIT_BLANK_CC in libI77
	368
	369	dnl Local Variables:
	370	dnl comment-start: "dnl "
	371	dnl comment-end: ""
	372	dnl comment-start-skip: "\\bdnl\\b\\s *"
	373	dnl End: