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1 # This file is part of Autoconf. -*- Autoconf -*-
2 # Fortran languages support.
3 # Copyright (C) 2001, 2003, 2004, 2005, 2006
4 # Free Software Foundation, Inc.
5 #
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2, or (at your option)
9 # any later version.
10 #
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
15 #
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 # 02110-1301, USA.
20 #
21 # As a special exception, the Free Software Foundation gives unlimited
22 # permission to copy, distribute and modify the configure scripts that
23 # are the output of Autoconf. You need not follow the terms of the GNU
24 # General Public License when using or distributing such scripts, even
25 # though portions of the text of Autoconf appear in them. The GNU
26 # General Public License (GPL) does govern all other use of the material
27 # that constitutes the Autoconf program.
28 #
29 # Certain portions of the Autoconf source text are designed to be copied
30 # (in certain cases, depending on the input) into the output of
31 # Autoconf. We call these the "data" portions. The rest of the Autoconf
32 # source text consists of comments plus executable code that decides which
33 # of the data portions to output in any given case. We call these
34 # comments and executable code the "non-data" portions. Autoconf never
35 # copies any of the non-data portions into its output.
36 #
37 # This special exception to the GPL applies to versions of Autoconf
38 # released by the Free Software Foundation. When you make and
39 # distribute a modified version of Autoconf, you may extend this special
40 # exception to the GPL to apply to your modified version as well, *unless*
41 # your modified version has the potential to copy into its output some
42 # of the text that was the non-data portion of the version that you started
43 # with. (In other words, unless your change moves or copies text from
44 # the non-data portions to the data portions.) If your modification has
45 # such potential, you must delete any notice of this special exception
46 # to the GPL from your modified version.
47 #
48 # Written by David MacKenzie, with help from
49 # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
50 # Roland McGrath, Noah Friedman, david d zuhn, and many others.
52 # Fortran vs. Fortran 77:
53 # This file contains macros for both "Fortran 77" and "Fortran", where
54 # the former is the "classic" autoconf Fortran interface and is intended
55 # for legacy F77 codes, while the latter is intended to support newer Fortran
56 # dialects. Fortran 77 uses environment variables F77, FFLAGS, and FLIBS,
57 # while Fortran uses FC, FCFLAGS, and FCLIBS. For each user-callable AC_*
58 # macro, there is generally both an F77 and an FC version, where both versions
59 # share the same _AC_*_FC_* backend. This backend macro requires that
60 # the appropriate language be AC_LANG_PUSH'ed, and uses _AC_LANG_ABBREV and
61 # _AC_LANG_PREFIX in order to name cache and environment variables, etc.
64 # _AC_LIST_MEMBER_IF(ELEMENT, LIST, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
65 # ---------------------------------------------------------------------------
66 #
67 # Processing the elements of a list is tedious in shell programming,
68 # as lists tend to be implemented as space delimited strings.
69 #
70 # This macro searches LIST for ELEMENT, and executes ACTION-IF-FOUND
71 # if ELEMENT is a member of LIST, otherwise it executes
72 # ACTION-IF-NOT-FOUND.
73 AC_DEFUN([_AC_LIST_MEMBER_IF],
74 [dnl Do some sanity checking of the arguments.
75 m4_if([$1], , [AC_FATAL([$0: missing argument 1])])dnl
76 m4_if([$2], , [AC_FATAL([$0: missing argument 2])])dnl
77 ac_exists=false
78 for ac_i in $2; do
79 if test x"$1" = x"$ac_i"; then
80 ac_exists=true
81 break
82 fi
83 done
85 AS_IF([test x"$ac_exists" = xtrue], [$3], [$4])[]dnl
86 ])# _AC_LIST_MEMBER_IF
89 # _AC_LINKER_OPTION(LINKER-OPTIONS, SHELL-VARIABLE)
90 # -------------------------------------------------
91 #
92 # Specifying options to the compiler (whether it be the C, C++ or
93 # Fortran 77 compiler) that are meant for the linker is compiler
94 # dependent. This macro lets you give options to the compiler that
95 # are meant for the linker in a portable, compiler-independent way.
96 #
97 # This macro take two arguments, a list of linker options that the
98 # compiler should pass to the linker (LINKER-OPTIONS) and the name of
99 # a shell variable (SHELL-VARIABLE). The list of linker options are
100 # appended to the shell variable in a compiler-dependent way.
101 #
102 # For example, if the selected language is C, then this:
103 #
104 # _AC_LINKER_OPTION([-R /usr/local/lib/foo], foo_LDFLAGS)
105 #
106 # will expand into this if the selected C compiler is gcc:
107 #
108 # foo_LDFLAGS="-Xlinker -R -Xlinker /usr/local/lib/foo"
109 #
110 # otherwise, it will expand into this:
111 #
112 # foo_LDFLAGS"-R /usr/local/lib/foo"
113 #
114 # You are encouraged to add support for compilers that this macro
115 # doesn't currently support.
116 # FIXME: Get rid of this macro.
117 AC_DEFUN([_AC_LINKER_OPTION],
118 [if test "$ac_compiler_gnu" = yes; then
119 for ac_link_opt in $1; do
120 $2="[$]$2 -Xlinker $ac_link_opt"
121 done
122 else
123 $2="[$]$2 $1"
124 fi[]dnl
125 ])# _AC_LINKER_OPTION
129 ## ----------------------- ##
130 ## 1. Language selection. ##
131 ## ----------------------- ##
134 # -------------------------- #
135 # 1d. The Fortran language. #
136 # -------------------------- #
139 # AC_LANG(Fortran 77)
140 # -------------------
141 m4_define([AC_LANG(Fortran 77)],
142 [ac_ext=f
143 ac_compile='$F77 -c $FFLAGS conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
144 ac_link='$F77 -o conftest$ac_exeext $FFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD'
145 ac_compiler_gnu=$ac_cv_f77_compiler_gnu
146 ])
149 # AC_LANG(Fortran)
150 # ----------------
151 m4_define([AC_LANG(Fortran)],
152 [ac_ext=${ac_fc_srcext-f}
153 ac_compile='$FC -c $FCFLAGS $ac_fcflags_srcext conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
154 ac_link='$FC -o conftest$ac_exeext $FCFLAGS $LDFLAGS $ac_fcflags_srcext conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD'
155 ac_compiler_gnu=$ac_cv_fc_compiler_gnu
156 ])
158 # AC_LANG_FORTRAN77
159 # -----------------
160 AU_DEFUN([AC_LANG_FORTRAN77], [AC_LANG(Fortran 77)])
163 # _AC_FORTRAN_ASSERT
164 # ------------------
165 # Current language must be Fortran or Fortran 77.
166 m4_defun([_AC_FORTRAN_ASSERT],
167 [m4_if(_AC_LANG, [Fortran], [],
168 [m4_if(_AC_LANG, [Fortran 77], [],
169 [m4_fatal([$0: current language is not Fortran: ] _AC_LANG)])])])
172 # _AC_LANG_ABBREV(Fortran 77)
173 # ---------------------------
174 m4_define([_AC_LANG_ABBREV(Fortran 77)], [f77])
176 # _AC_LANG_ABBREV(Fortran)
177 # ------------------------
178 m4_define([_AC_LANG_ABBREV(Fortran)], [fc])
181 # _AC_LANG_PREFIX(Fortran 77)
182 # ---------------------------
183 m4_define([_AC_LANG_PREFIX(Fortran 77)], [F])
185 # _AC_LANG_PREFIX(Fortran)
186 # ------------------------
187 m4_define([_AC_LANG_PREFIX(Fortran)], [FC])
190 # _AC_FC
191 # ------
192 # Return F77 or FC, depending upon the language.
193 AC_DEFUN([_AC_FC],
194 [_AC_FORTRAN_ASSERT()dnl
195 AC_LANG_CASE([Fortran 77], [F77],
196 [Fortran], [FC])])
199 ## ---------------------- ##
200 ## 2.Producing programs. ##
201 ## ---------------------- ##
204 # --------------------- #
205 # 2d. Fortran sources. #
206 # --------------------- #
208 # AC_LANG_SOURCE(Fortran 77)(BODY)
209 # AC_LANG_SOURCE(Fortran)(BODY)
210 # --------------------------------
211 # FIXME: Apparently, according to former AC_TRY_COMPILER, the CPP
212 # directives must not be included. But AC_TRY_RUN_NATIVE was not
213 # avoiding them, so?
214 m4_define([AC_LANG_SOURCE(Fortran 77)],
215 [$1])
216 m4_define([AC_LANG_SOURCE(Fortran)],
217 [$1])
220 # AC_LANG_PROGRAM(Fortran 77)([PROLOGUE], [BODY])
221 # -----------------------------------------------
222 # Yes, we discard the PROLOGUE.
223 m4_define([AC_LANG_PROGRAM(Fortran 77)],
224 [m4_ifval([$1],
225 [m4_warn([syntax], [$0: ignoring PROLOGUE: $1])])dnl
226 program main
227 $2
228 end])
231 # AC_LANG_PROGRAM(Fortran)([PROLOGUE], [BODY])
232 # -----------------------------------------------
233 # FIXME: can the PROLOGUE be used?
234 m4_define([AC_LANG_PROGRAM(Fortran)],
235 [m4_ifval([$1],
236 [m4_warn([syntax], [$0: ignoring PROLOGUE: $1])])dnl
237 program main
238 $2
239 end])
242 # AC_LANG_CALL(Fortran 77)(PROLOGUE, FUNCTION)
243 # --------------------------------------------
244 # FIXME: This is a guess, help!
245 m4_define([AC_LANG_CALL(Fortran 77)],
246 [AC_LANG_PROGRAM([$1],
247 [ call $2])])
250 # AC_LANG_CALL(Fortran)(PROLOGUE, FUNCTION)
251 # --------------------------------------------
252 # FIXME: This is a guess, help!
253 m4_define([AC_LANG_CALL(Fortran)],
254 [AC_LANG_PROGRAM([$1],
255 [ call $2])])
259 ## -------------------------------------------- ##
260 ## 3. Looking for Compilers and Preprocessors. ##
261 ## -------------------------------------------- ##
264 # -------------------------- #
265 # 3d. The Fortran compiler. #
266 # -------------------------- #
269 # AC_LANG_PREPROC(Fortran 77)
270 # ---------------------------
271 # Find the Fortran 77 preprocessor. Must be AC_DEFUN'd to be AC_REQUIRE'able.
272 AC_DEFUN([AC_LANG_PREPROC(Fortran 77)],
273 [m4_warn([syntax],
274 [$0: No preprocessor defined for ]_AC_LANG)])
276 # AC_LANG_PREPROC(Fortran)
277 # ---------------------------
278 # Find the Fortran preprocessor. Must be AC_DEFUN'd to be AC_REQUIRE'able.
279 AC_DEFUN([AC_LANG_PREPROC(Fortran)],
280 [m4_warn([syntax],
281 [$0: No preprocessor defined for ]_AC_LANG)])
284 # AC_LANG_COMPILER(Fortran 77)
285 # ----------------------------
286 # Find the Fortran 77 compiler. Must be AC_DEFUN'd to be
287 # AC_REQUIRE'able.
288 AC_DEFUN([AC_LANG_COMPILER(Fortran 77)],
289 [AC_REQUIRE([AC_PROG_F77])])
291 # AC_LANG_COMPILER(Fortran)
292 # ----------------------------
293 # Find the Fortran compiler. Must be AC_DEFUN'd to be
294 # AC_REQUIRE'able.
295 AC_DEFUN([AC_LANG_COMPILER(Fortran)],
296 [AC_REQUIRE([AC_PROG_FC])])
299 # ac_cv_prog_g77
300 # --------------
301 # We used to name the cache variable this way.
302 AU_DEFUN([ac_cv_prog_g77],
303 [ac_cv_f77_compiler_gnu])
306 # _AC_FC_DIALECT_YEAR([DIALECT])
307 # ------------------------------
308 # Given a Fortran DIALECT, which is Fortran [YY]YY or simply [YY]YY,
309 # convert to a 4-digit year. The dialect must be one of Fortran 77,
310 # 90, 95, or 2000, currently. If DIALECT is simply Fortran or the
311 # empty string, returns the empty string.
312 AC_DEFUN([_AC_FC_DIALECT_YEAR],
313 [m4_case(m4_bpatsubsts(m4_tolower([$1]), [fortran],[], [ *],[]),
314 [77],[1977], [1977],[1977],
315 [90],[1990], [1990],[1990],
316 [95],[1995], [1995],[1995],
317 [2000],[2000],
318 [],[],
319 [m4_fatal([unknown Fortran dialect])])])
322 # _AC_PROG_FC([DIALECT], [COMPILERS...])
323 # --------------------------------------
324 # DIALECT is a Fortran dialect, given by Fortran [YY]YY or simply [YY]YY,
325 # and must be one of those supported by _AC_FC_DIALECT_YEAR
326 #
327 # If DIALECT is supplied, then we search for compilers of that dialect
328 # first, and then later dialects. Otherwise, we search for compilers
329 # of the newest dialect first, and then earlier dialects in increasing age.
330 # This search order is necessarily imperfect because the dialect cannot
331 # always be inferred from the compiler name.
332 #
333 # Known compilers:
334 # f77/f90/f95: generic compiler names
335 # g77: GNU Fortran 77 compiler
336 # gfortran: GNU Fortran 95+ compiler (released in gcc 4.0)
337 # g95: original gcc-based f95 compiler (gfortran is a fork)
338 # ftn: native Fortran 95 compiler on Cray X1
339 # cf77: native F77 compiler under older Crays (prefer over fort77)
340 # fort77: native F77 compiler under HP-UX (and some older Crays)
341 # frt: Fujitsu F77 compiler
342 # pgf77/pgf90/pghpf/pgf95: Portland Group F77/F90/F95 compilers
343 # xlf/xlf90/xlf95: IBM (AIX) F77/F90/F95 compilers
344 # Prefer xlf9x to the generic names because they do not reject file
345 # with extension `.f'.
346 # lf95: Lahey-Fujitsu F95 compiler
347 # fl32: Microsoft Fortran 77 "PowerStation" compiler
348 # af77: Apogee F77 compiler for Intergraph hardware running CLIX
349 # epcf90: "Edinburgh Portable Compiler" F90
350 # fort: Compaq (now HP) Fortran 90/95 compiler for Tru64 and Linux/Alpha
351 # ifort, previously ifc: Intel Fortran 95 compiler for Linux/x86
352 # efc: Intel Fortran 95 compiler for IA64
353 m4_define([_AC_F95_FC], [gfortran g95 xlf95 f95 fort ifort ifc efc pgf95 lf95 ftn])
354 m4_define([_AC_F90_FC], [xlf90 f90 pgf90 pghpf epcf90])
355 m4_define([_AC_F77_FC], [g77 xlf f77 frt pgf77 cf77 fort77 fl32 af77])
356 AC_DEFUN([_AC_PROG_FC],
357 [_AC_FORTRAN_ASSERT()dnl
358 AC_CHECK_TOOLS([]_AC_FC[],
359 m4_default([$2],
360 m4_case(_AC_FC_DIALECT_YEAR([$1]),
361 [1995], [_AC_F95_FC],
362 [1990], [_AC_F90_FC _AC_F95_FC],
363 [1977], [_AC_F77_FC _AC_F90_FC _AC_F95_FC],
364 [_AC_F95_FC _AC_F90_FC _AC_F77_FC])))
366 # Provide some information about the compiler.
367 _AS_ECHO_LOG([checking for _AC_LANG compiler version])
368 ac_compiler=`set X $ac_compile; echo $[2]`
369 _AC_DO([$ac_compiler --version >&AS_MESSAGE_LOG_FD])
370 _AC_DO([$ac_compiler -v >&AS_MESSAGE_LOG_FD])
371 _AC_DO([$ac_compiler -V >&AS_MESSAGE_LOG_FD])
372 rm -f a.out
374 m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
375 m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl
376 # If we don't use `.F' as extension, the preprocessor is not run on the
377 # input file. (Note that this only needs to work for GNU compilers.)
378 ac_save_ext=$ac_ext
379 ac_ext=F
380 _AC_LANG_COMPILER_GNU
381 ac_ext=$ac_save_ext
382 _AC_PROG_FC_G
383 ])# _AC_PROG_FC
386 # AC_PROG_F77([COMPILERS...])
387 # ---------------------------
388 # COMPILERS is a space separated list of Fortran 77 compilers to search
389 # for. See also _AC_PROG_FC.
390 AC_DEFUN([AC_PROG_F77],
391 [AC_LANG_PUSH(Fortran 77)dnl
392 AC_ARG_VAR([F77], [Fortran 77 compiler command])dnl
393 AC_ARG_VAR([FFLAGS], [Fortran 77 compiler flags])dnl
394 _AC_ARG_VAR_LDFLAGS()dnl
395 _AC_ARG_VAR_LIBS()dnl
396 _AC_PROG_FC([Fortran 77], [$1])
397 G77=`test $ac_compiler_gnu = yes && echo yes`
398 AC_LANG_POP(Fortran 77)dnl
399 ])# AC_PROG_F77
402 # AC_PROG_FC([COMPILERS...], [DIALECT])
403 # -------------------------------------
404 # COMPILERS is a space separated list of Fortran 77 compilers to search
405 # for, and [DIALECT] is an optional dialect. See also _AC_PROG_FC.
406 AC_DEFUN([AC_PROG_FC],
407 [AC_LANG_PUSH(Fortran)dnl
408 AC_ARG_VAR([FC], [Fortran compiler command])dnl
409 AC_ARG_VAR([FCFLAGS], [Fortran compiler flags])dnl
410 _AC_ARG_VAR_LDFLAGS()dnl
411 _AC_ARG_VAR_LIBS()dnl
412 _AC_PROG_FC([$2], [$1])
413 AC_LANG_POP(Fortran)dnl
414 ])# AC_PROG_FC
417 # _AC_PROG_FC_G
418 # -------------
419 # Check whether -g works, even if F[C]FLAGS is set, in case the package
420 # plays around with F[C]FLAGS (such as to build both debugging and normal
421 # versions of a library), tasteless as that idea is.
422 m4_define([_AC_PROG_FC_G],
423 [_AC_FORTRAN_ASSERT()dnl
424 ac_test_FFLAGS=${[]_AC_LANG_PREFIX[]FLAGS+set}
425 ac_save_FFLAGS=$[]_AC_LANG_PREFIX[]FLAGS
426 _AC_LANG_PREFIX[]FLAGS=
427 AC_CACHE_CHECK(whether $[]_AC_FC[] accepts -g, ac_cv_prog_[]_AC_LANG_ABBREV[]_g,
428 [_AC_LANG_PREFIX[]FLAGS=-g
429 _AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
430 [ac_cv_prog_[]_AC_LANG_ABBREV[]_g=yes],
431 [ac_cv_prog_[]_AC_LANG_ABBREV[]_g=no])
432 ])
433 if test "$ac_test_FFLAGS" = set; then
434 _AC_LANG_PREFIX[]FLAGS=$ac_save_FFLAGS
435 elif test $ac_cv_prog_[]_AC_LANG_ABBREV[]_g = yes; then
436 if test "x$ac_cv_[]_AC_LANG_ABBREV[]_compiler_gnu" = xyes; then
437 _AC_LANG_PREFIX[]FLAGS="-g -O2"
438 else
439 _AC_LANG_PREFIX[]FLAGS="-g"
440 fi
441 else
442 if test "x$ac_cv_[]_AC_LANG_ABBREV[]_compiler_gnu" = xyes; then
443 _AC_LANG_PREFIX[]FLAGS="-O2"
444 else
445 _AC_LANG_PREFIX[]FLAGS=
446 fi
447 fi[]dnl
448 ])# _AC_PROG_FC_G
451 # _AC_PROG_FC_C_O
452 # ---------------
453 # Test if the Fortran compiler accepts the options `-c' and `-o'
454 # simultaneously, and define `[F77/FC]_NO_MINUS_C_MINUS_O' if it does not.
455 #
456 # The usefulness of this macro is questionable, as I can't really see
457 # why anyone would use it. The only reason I include it is for
458 # completeness, since a similar test exists for the C compiler.
459 #
460 # FIXME: it seems like we could merge the C/C++/Fortran versions of this.
461 AC_DEFUN([_AC_PROG_FC_C_O],
462 [_AC_FORTRAN_ASSERT()dnl
463 AC_CACHE_CHECK([whether $[]_AC_FC[] understands -c and -o together],
464 [ac_cv_prog_[]_AC_LANG_ABBREV[]_c_o],
465 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
466 # We test twice because some compilers refuse to overwrite an existing
467 # `.o' file with `-o', although they will create one.
468 ac_try='$[]_AC_FC[] $[]_AC_LANG_PREFIX[]FLAGS -c conftest.$ac_ext -o conftest2.$ac_objext >&AS_MESSAGE_LOG_FD'
469 rm -f conftest2.*
470 if _AC_DO_VAR(ac_try) &&
471 test -f conftest2.$ac_objext &&
472 _AC_DO_VAR(ac_try); then
473 ac_cv_prog_[]_AC_LANG_ABBREV[]_c_o=yes
474 else
475 ac_cv_prog_[]_AC_LANG_ABBREV[]_c_o=no
476 fi
477 rm -f conftest*])
478 if test $ac_cv_prog_[]_AC_LANG_ABBREV[]_c_o = no; then
479 AC_DEFINE([]_AC_FC[]_NO_MINUS_C_MINUS_O, 1,
480 [Define to 1 if your Fortran compiler doesn't accept
481 -c and -o together.])
482 fi
483 ])# _AC_PROG_FC_C_O
486 # AC_PROG_F77_C_O
487 # ---------------
488 AC_DEFUN([AC_PROG_F77_C_O],
489 [AC_REQUIRE([AC_PROG_F77])dnl
490 AC_LANG_PUSH(Fortran 77)dnl
491 _AC_PROG_FC_C_O
492 AC_LANG_POP(Fortran 77)dnl
493 ])# AC_PROG_F77_C_O
496 # AC_PROG_FC_C_O
497 # ---------------
498 AC_DEFUN([AC_PROG_FC_C_O],
499 [AC_REQUIRE([AC_PROG_FC])dnl
500 AC_LANG_PUSH(Fortran)dnl
501 _AC_PROG_FC_C_O
502 AC_LANG_POP(Fortran)dnl
503 ])# AC_PROG_FC_C_O
506 ## ------------------------------- ##
507 ## 4. Compilers' characteristics. ##
508 ## ------------------------------- ##
511 # ---------------------------------------- #
512 # 4d. Fortran 77 compiler characteristics. #
513 # ---------------------------------------- #
516 # _AC_PROG_FC_V_OUTPUT([FLAG = $ac_cv_prog_{f77/fc}_v])
517 # -------------------------------------------------
518 # Link a trivial Fortran program, compiling with a verbose output FLAG
519 # (whose default value, $ac_cv_prog_{f77/fc}_v, is computed by
520 # _AC_PROG_FC_V), and return the output in $ac_{f77/fc}_v_output. This
521 # output is processed in the way expected by _AC_FC_LIBRARY_LDFLAGS,
522 # so that any link flags that are echoed by the compiler appear as
523 # space-separated items.
524 AC_DEFUN([_AC_PROG_FC_V_OUTPUT],
525 [_AC_FORTRAN_ASSERT()dnl
526 AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
528 # Compile and link our simple test program by passing a flag (argument
529 # 1 to this macro) to the Fortran compiler in order to get
530 # "verbose" output that we can then parse for the Fortran linker
531 # flags.
532 ac_save_FFLAGS=$[]_AC_LANG_PREFIX[]FLAGS
533 _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS m4_default([$1], [$ac_cv_prog_[]_AC_LANG_ABBREV[]_v])"
534 eval "set x $ac_link"
535 shift
536 _AS_ECHO_LOG([$[*]])
537 ac_[]_AC_LANG_ABBREV[]_v_output=`eval $ac_link AS_MESSAGE_LOG_FD>&1 2>&1 | grep -v 'Driving:'`
538 echo "$ac_[]_AC_LANG_ABBREV[]_v_output" >&AS_MESSAGE_LOG_FD
539 _AC_LANG_PREFIX[]FLAGS=$ac_save_FFLAGS
541 rm -f conftest*
543 # On HP/UX there is a line like: "LPATH is: /foo:/bar:/baz" where
544 # /foo, /bar, and /baz are search directories for the Fortran linker.
545 # Here, we change these into -L/foo -L/bar -L/baz (and put it first):
546 ac_[]_AC_LANG_ABBREV[]_v_output="`echo $ac_[]_AC_LANG_ABBREV[]_v_output |
547 grep 'LPATH is:' |
548 sed 's,.*LPATH is\(: *[[^ ]]*\).*,\1,;s,: */, -L/,g'` $ac_[]_AC_LANG_ABBREV[]_v_output"
550 # FIXME: we keep getting bitten by quoted arguments; a more general fix
551 # that detects unbalanced quotes in FLIBS should be implemented
552 # and (ugh) tested at some point.
553 case $ac_[]_AC_LANG_ABBREV[]_v_output in
554 # If we are using xlf then replace all the commas with spaces.
555 *xlfentry*)
556 ac_[]_AC_LANG_ABBREV[]_v_output=`echo $ac_[]_AC_LANG_ABBREV[]_v_output | sed 's/,/ /g'` ;;
558 # With Intel ifc, ignore the quoted -mGLOB_options_string stuff (quoted
559 # $LIBS confuse us, and the libraries appear later in the output anyway).
560 *mGLOB_options_string*)
561 ac_[]_AC_LANG_ABBREV[]_v_output=`echo $ac_[]_AC_LANG_ABBREV[]_v_output | sed 's/"-mGLOB[[^"]]*"/ /g'` ;;
563 # Portland Group compiler has singly- or doubly-quoted -cmdline argument
564 # Singly-quoted arguments were reported for versions 5.2-4 and 6.0-4.
565 # Doubly-quoted arguments were reported for "PGF90/x86 Linux/x86 5.0-2".
566 *-cmdline\ * | *-ignore\ * | *-def\ *)
567 ac_[]_AC_LANG_ABBREV[]_v_output=`echo $ac_[]_AC_LANG_ABBREV[]_v_output | sed "\
568 s/-cmdline *'[[^']]*'/ /g; s/-cmdline *\"[[^\"]]*\"/ /g
569 s/-ignore *'[[^']]*'/ /g; s/-ignore *\"[[^\"]]*\"/ /g
570 s/-def *'[[^']]*'/ /g; s/-def *\"[[^\"]]*\"/ /g"` ;;
572 # If we are using Cray Fortran then delete quotes.
573 *cft90*)
574 ac_[]_AC_LANG_ABBREV[]_v_output=`echo $ac_[]_AC_LANG_ABBREV[]_v_output | sed 's/"//g'` ;;
575 esac
577 ])# _AC_PROG_FC_V_OUTPUT
580 # _AC_PROG_FC_V
581 # --------------
582 #
583 # Determine the flag that causes the Fortran compiler to print
584 # information of library and object files (normally -v)
585 # Needed for _AC_FC_LIBRARY_FLAGS
586 # Some compilers don't accept -v (Lahey: -verbose, xlf: -V, Fujitsu: -###)
587 AC_DEFUN([_AC_PROG_FC_V],
588 [_AC_FORTRAN_ASSERT()dnl
589 AC_CACHE_CHECK([how to get verbose linking output from $[]_AC_FC[]],
590 [ac_cv_prog_[]_AC_LANG_ABBREV[]_v],
591 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
592 [ac_cv_prog_[]_AC_LANG_ABBREV[]_v=
593 # Try some options frequently used verbose output
594 for ac_verb in -v -verbose --verbose -V -\#\#\#; do
595 _AC_PROG_FC_V_OUTPUT($ac_verb)
596 # look for -l* and *.a constructs in the output
597 for ac_arg in $ac_[]_AC_LANG_ABBREV[]_v_output; do
598 case $ac_arg in
599 [[\\/]]*.a | ?:[[\\/]]*.a | -[[lLRu]]*)
600 ac_cv_prog_[]_AC_LANG_ABBREV[]_v=$ac_verb
601 break 2 ;;
602 esac
603 done
604 done
605 if test -z "$ac_cv_prog_[]_AC_LANG_ABBREV[]_v"; then
606 AC_MSG_WARN([cannot determine how to obtain linking information from $[]_AC_FC[]])
607 fi],
608 [AC_MSG_WARN([compilation failed])])
609 ])])# _AC_PROG_FC_V
612 # _AC_FC_LIBRARY_LDFLAGS
613 # ----------------------
614 #
615 # Determine the linker flags (e.g. "-L" and "-l") for the Fortran
616 # intrinsic and runtime libraries that are required to successfully
617 # link a Fortran program or shared library. The output variable
618 # FLIBS/FCLIBS is set to these flags.
619 #
620 # This macro is intended to be used in those situations when it is
621 # necessary to mix, e.g. C++ and Fortran, source code into a single
622 # program or shared library.
623 #
624 # For example, if object files from a C++ and Fortran compiler must
625 # be linked together, then the C++ compiler/linker must be used for
626 # linking (since special C++-ish things need to happen at link time
627 # like calling global constructors, instantiating templates, enabling
628 # exception support, etc.).
629 #
630 # However, the Fortran intrinsic and runtime libraries must be
631 # linked in as well, but the C++ compiler/linker doesn't know how to
632 # add these Fortran libraries. Hence, the macro
633 # "AC_F77_LIBRARY_LDFLAGS" was created to determine these Fortran
634 # libraries.
635 #
636 # This macro was packaged in its current form by Matthew D. Langston.
637 # However, nearly all of this macro came from the "OCTAVE_FLIBS" macro
638 # in "octave-2.0.13/aclocal.m4", and full credit should go to John
639 # W. Eaton for writing this extremely useful macro. Thank you John.
640 AC_DEFUN([_AC_FC_LIBRARY_LDFLAGS],
641 [_AC_FORTRAN_ASSERT()dnl
642 _AC_PROG_FC_V
643 AC_CACHE_CHECK([for _AC_LANG libraries of $[]_AC_FC[]], ac_cv_[]_AC_LANG_ABBREV[]_libs,
644 [if test "x$[]_AC_LANG_PREFIX[]LIBS" != "x"; then
645 ac_cv_[]_AC_LANG_ABBREV[]_libs="$[]_AC_LANG_PREFIX[]LIBS" # Let the user override the test.
646 else
648 _AC_PROG_FC_V_OUTPUT
650 ac_cv_[]_AC_LANG_ABBREV[]_libs=
652 # Save positional arguments (if any)
653 ac_save_positional="$[@]"
655 set X $ac_[]_AC_LANG_ABBREV[]_v_output
656 while test $[@%:@] != 1; do
657 shift
658 ac_arg=$[1]
659 case $ac_arg in
660 [[\\/]]*.a | ?:[[\\/]]*.a)
661 _AC_LIST_MEMBER_IF($ac_arg, $ac_cv_[]_AC_LANG_ABBREV[]_libs, ,
662 ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg")
663 ;;
664 -bI:*)
665 _AC_LIST_MEMBER_IF($ac_arg, $ac_cv_[]_AC_LANG_ABBREV[]_libs, ,
666 [_AC_LINKER_OPTION([$ac_arg], ac_cv_[]_AC_LANG_ABBREV[]_libs)])
667 ;;
668 # Ignore these flags.
669 -lang* | -lcrt*.o | -lc | -lgcc* | -lSystem | -libmil | -LANG:=* | -LIST:* | -LNO:*)
670 ;;
671 -lkernel32)
672 test x"$CYGWIN" != xyes && ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg"
673 ;;
674 -[[LRuYz]])
675 # These flags, when seen by themselves, take an argument.
676 # We remove the space between option and argument and re-iterate
677 # unless we find an empty arg or a new option (starting with -)
678 case $[2] in
679 "" | -*);;
680 *)
681 ac_arg="$ac_arg$[2]"
682 shift; shift
683 set X $ac_arg "$[@]"
684 ;;
685 esac
686 ;;
687 -YP,*)
688 for ac_j in `echo $ac_arg | sed -e 's/-YP,/-L/;s/:/ -L/g'`; do
689 _AC_LIST_MEMBER_IF($ac_j, $ac_cv_[]_AC_LANG_ABBREV[]_libs, ,
690 [ac_arg="$ac_arg $ac_j"
691 ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_j"])
692 done
693 ;;
694 -[[lLR]]*)
695 _AC_LIST_MEMBER_IF($ac_arg, $ac_cv_[]_AC_LANG_ABBREV[]_libs, ,
696 ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg")
697 ;;
698 -zallextract*| -zdefaultextract)
699 ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg"
700 ;;
701 # Ignore everything else.
702 esac
703 done
704 # restore positional arguments
705 set X $ac_save_positional; shift
707 # We only consider "LD_RUN_PATH" on Solaris systems. If this is seen,
708 # then we insist that the "run path" must be an absolute path (i.e. it
709 # must begin with a "/").
710 case `(uname -sr) 2>/dev/null` in
711 "SunOS 5"*)
712 ac_ld_run_path=`echo $ac_[]_AC_LANG_ABBREV[]_v_output |
713 sed -n 's,^.*LD_RUN_PATH *= *\(/[[^ ]]*\).*$,-R\1,p'`
714 test "x$ac_ld_run_path" != x &&
715 _AC_LINKER_OPTION([$ac_ld_run_path], ac_cv_[]_AC_LANG_ABBREV[]_libs)
716 ;;
717 esac
718 fi # test "x$[]_AC_LANG_PREFIX[]LIBS" = "x"
719 ])
720 []_AC_LANG_PREFIX[]LIBS="$ac_cv_[]_AC_LANG_ABBREV[]_libs"
721 AC_SUBST([]_AC_LANG_PREFIX[]LIBS)
722 ])# _AC_FC_LIBRARY_LDFLAGS
725 # AC_F77_LIBRARY_LDFLAGS
726 # ----------------------
727 AC_DEFUN([AC_F77_LIBRARY_LDFLAGS],
728 [AC_REQUIRE([AC_PROG_F77])dnl
729 AC_LANG_PUSH(Fortran 77)dnl
730 _AC_FC_LIBRARY_LDFLAGS
731 AC_LANG_POP(Fortran 77)dnl
732 ])# AC_F77_LIBRARY_LDFLAGS
735 # AC_FC_LIBRARY_LDFLAGS
736 # ----------------------
737 AC_DEFUN([AC_FC_LIBRARY_LDFLAGS],
738 [AC_REQUIRE([AC_PROG_FC])dnl
739 AC_LANG_PUSH(Fortran)dnl
740 _AC_FC_LIBRARY_LDFLAGS
741 AC_LANG_POP(Fortran)dnl
742 ])# AC_FC_LIBRARY_LDFLAGS
745 # _AC_FC_DUMMY_MAIN([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
746 # -----------------------------------------------------------
747 #
748 # Detect name of dummy main routine required by the Fortran libraries,
749 # (if any) and define {F77,FC}_DUMMY_MAIN to this name (which should be
750 # used for a dummy declaration, if it is defined). On some systems,
751 # linking a C program to the Fortran library does not work unless you
752 # supply a dummy function called something like MAIN__.
753 #
754 # Execute ACTION-IF-NOT-FOUND if no way of successfully linking a C
755 # program with the {F77,FC} libs is found; default to exiting with an error
756 # message. Execute ACTION-IF-FOUND if a dummy routine name is needed
757 # and found or if it is not needed (default to defining {F77,FC}_DUMMY_MAIN
758 # when needed).
759 #
760 # What is technically happening is that the Fortran libraries provide
761 # their own main() function, which usually initializes Fortran I/O and
762 # similar stuff, and then calls MAIN__, which is the entry point of
763 # your program. Usually, a C program will override this with its own
764 # main() routine, but the linker sometimes complain if you don't
765 # provide a dummy (never-called) MAIN__ routine anyway.
766 #
767 # Of course, programs that want to allow Fortran subroutines to do
768 # I/O, etcetera, should call their main routine MAIN__() (or whatever)
769 # instead of main(). A separate autoconf test (_AC_FC_MAIN) checks
770 # for the routine to use in this case (since the semantics of the test
771 # are slightly different). To link to e.g. purely numerical
772 # libraries, this is normally not necessary, however, and most C/C++
773 # programs are reluctant to turn over so much control to Fortran. =)
774 #
775 # The name variants we check for are (in order):
776 # MAIN__ (g77, MAIN__ required on some systems; IRIX, MAIN__ optional)
777 # MAIN_, __main (SunOS)
778 # MAIN _MAIN __MAIN main_ main__ _main (we follow DDD and try these too)
779 AC_DEFUN([_AC_FC_DUMMY_MAIN],
780 [_AC_FORTRAN_ASSERT()dnl
781 m4_define(_AC_LANG_PROGRAM_C_[]_AC_FC[]_HOOKS,
782 [#ifdef ]_AC_FC[_DUMMY_MAIN
783 ]AC_LANG_CASE([Fortran], [#ifndef FC_DUMMY_MAIN_EQ_F77])
784 [# ifdef __cplusplus
785 extern "C"
786 # endif
787 int ]_AC_FC[_DUMMY_MAIN() { return 1; }
788 ]AC_LANG_CASE([Fortran], [#endif])
789 [#endif
790 ])
791 AC_CACHE_CHECK([for dummy main to link with _AC_LANG libraries],
792 ac_cv_[]_AC_LANG_ABBREV[]_dummy_main,
793 [ac_[]_AC_LANG_ABBREV[]_dm_save_LIBS=$LIBS
794 LIBS="$LIBS $[]_AC_LANG_PREFIX[]LIBS"
795 ac_fortran_dm_var=[]_AC_FC[]_DUMMY_MAIN
796 AC_LANG_PUSH(C)dnl
798 # First, try linking without a dummy main:
799 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
800 [ac_cv_fortran_dummy_main=none],
801 [ac_cv_fortran_dummy_main=unknown])
803 if test $ac_cv_fortran_dummy_main = unknown; then
804 for ac_func in MAIN__ MAIN_ __main MAIN _MAIN __MAIN main_ main__ _main; do
805 AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@define $ac_fortran_dm_var $ac_func]])],
806 [ac_cv_fortran_dummy_main=$ac_func; break])
807 done
808 fi
809 AC_LANG_POP(C)dnl
810 ac_cv_[]_AC_LANG_ABBREV[]_dummy_main=$ac_cv_fortran_dummy_main
811 rm -f conftest*
812 LIBS=$ac_[]_AC_LANG_ABBREV[]_dm_save_LIBS
813 ])
814 []_AC_FC[]_DUMMY_MAIN=$ac_cv_[]_AC_LANG_ABBREV[]_dummy_main
815 AS_IF([test "$[]_AC_FC[]_DUMMY_MAIN" != unknown],
816 [m4_default([$1],
817 [if test $[]_AC_FC[]_DUMMY_MAIN != none; then
818 AC_DEFINE_UNQUOTED([]_AC_FC[]_DUMMY_MAIN, $[]_AC_FC[]_DUMMY_MAIN,
819 [Define to dummy `main' function (if any) required to
820 link to the Fortran libraries.])
821 if test "x$ac_cv_fc_dummy_main" = "x$ac_cv_f77_dummy_main"; then
822 AC_DEFINE([FC_DUMMY_MAIN_EQ_F77], 1,
823 [Define if F77 and FC dummy `main' functions are identical.])
824 fi
825 fi])],
826 [m4_default([$2],
827 [AC_MSG_FAILURE([linking to Fortran libraries from C fails])])])
828 ])# _AC_FC_DUMMY_MAIN
831 # AC_F77_DUMMY_MAIN
832 # ----------------------
833 AC_DEFUN([AC_F77_DUMMY_MAIN],
834 [AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])dnl
835 AC_LANG_PUSH(Fortran 77)dnl
836 _AC_FC_DUMMY_MAIN($@)
837 AC_LANG_POP(Fortran 77)dnl
838 ])# AC_F77_DUMMY_MAIN
841 # AC_FC_DUMMY_MAIN
842 # ----------------------
843 AC_DEFUN([AC_FC_DUMMY_MAIN],
844 [AC_REQUIRE([AC_FC_LIBRARY_LDFLAGS])dnl
845 AC_LANG_PUSH(Fortran)dnl
846 _AC_FC_DUMMY_MAIN($@)
847 AC_LANG_POP(Fortran)dnl
848 ])# AC_FC_DUMMY_MAIN
851 # _AC_FC_MAIN
852 # -----------
853 # Define {F77,FC}_MAIN to name of alternate main() function for use with
854 # the Fortran libraries. (Typically, the libraries may define their
855 # own main() to initialize I/O, etcetera, that then call your own
856 # routine called MAIN__ or whatever.) See _AC_FC_DUMMY_MAIN, above.
857 # If no such alternate name is found, just define {F77,FC}_MAIN to main.
858 #
859 AC_DEFUN([_AC_FC_MAIN],
860 [_AC_FORTRAN_ASSERT()dnl
861 AC_CACHE_CHECK([for alternate main to link with _AC_LANG libraries],
862 ac_cv_[]_AC_LANG_ABBREV[]_main,
863 [ac_[]_AC_LANG_ABBREV[]_m_save_LIBS=$LIBS
864 LIBS="$LIBS $[]_AC_LANG_PREFIX[]LIBS"
865 ac_fortran_dm_var=[]_AC_FC[]_DUMMY_MAIN
866 AC_LANG_PUSH(C)dnl
867 ac_cv_fortran_main="main" # default entry point name
868 for ac_func in MAIN__ MAIN_ __main MAIN _MAIN __MAIN main_ main__ _main; do
869 AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@ifdef FC_DUMMY_MAIN_EQ_F77
870 @%:@ undef F77_DUMMY_MAIN
871 @%:@ undef FC_DUMMY_MAIN
872 @%:@else
873 @%:@ undef $ac_fortran_dm_var
874 @%:@endif
875 @%:@define main $ac_func])],
876 [ac_cv_fortran_main=$ac_func; break])
877 done
878 AC_LANG_POP(C)dnl
879 ac_cv_[]_AC_LANG_ABBREV[]_main=$ac_cv_fortran_main
880 rm -f conftest*
881 LIBS=$ac_[]_AC_LANG_ABBREV[]_m_save_LIBS
882 ])
883 AC_DEFINE_UNQUOTED([]_AC_FC[]_MAIN, $ac_cv_[]_AC_LANG_ABBREV[]_main,
884 [Define to alternate name for `main' routine that is
885 called from a `main' in the Fortran libraries.])
886 ])# _AC_FC_MAIN
889 # AC_F77_MAIN
890 # -----------
891 AC_DEFUN([AC_F77_MAIN],
892 [AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])dnl
893 AC_LANG_PUSH(Fortran 77)dnl
894 _AC_FC_MAIN
895 AC_LANG_POP(Fortran 77)dnl
896 ])# AC_F77_MAIN
899 # AC_FC_MAIN
900 # ----------
901 AC_DEFUN([AC_FC_MAIN],
902 [AC_REQUIRE([AC_FC_LIBRARY_LDFLAGS])dnl
903 AC_LANG_PUSH(Fortran)dnl
904 _AC_FC_MAIN
905 AC_LANG_POP(Fortran)dnl
906 ])# AC_FC_MAIN
909 # __AC_FC_NAME_MANGLING
910 # ---------------------
911 # Test for the name mangling scheme used by the Fortran compiler.
912 #
913 # Sets ac_cv_{f77,fc}_mangling. The value contains three fields, separated
914 # by commas:
915 #
916 # lower case / upper case:
917 # case translation of the Fortran symbols
918 # underscore / no underscore:
919 # whether the compiler appends "_" to symbol names
920 # extra underscore / no extra underscore:
921 # whether the compiler appends an extra "_" to symbol names already
922 # containing at least one underscore
923 #
924 AC_DEFUN([__AC_FC_NAME_MANGLING],
925 [_AC_FORTRAN_ASSERT()dnl
926 AC_CACHE_CHECK([for _AC_LANG name-mangling scheme],
927 ac_cv_[]_AC_LANG_ABBREV[]_mangling,
928 [AC_COMPILE_IFELSE(
929 [ subroutine foobar()
930 return
931 end
932 subroutine foo_bar()
933 return
934 end],
935 [mv conftest.$ac_objext cfortran_test.$ac_objext
937 ac_save_LIBS=$LIBS
938 LIBS="cfortran_test.$ac_objext $LIBS $[]_AC_LANG_PREFIX[]LIBS"
940 AC_LANG_PUSH(C)dnl
941 ac_success=no
942 for ac_foobar in foobar FOOBAR; do
943 for ac_underscore in "" "_"; do
944 ac_func="$ac_foobar$ac_underscore"
945 AC_LINK_IFELSE([AC_LANG_CALL([], [$ac_func])],
946 [ac_success=yes; break 2])
947 done
948 done
949 AC_LANG_POP(C)dnl
951 if test "$ac_success" = "yes"; then
952 case $ac_foobar in
953 foobar)
954 ac_case=lower
955 ac_foo_bar=foo_bar
956 ;;
957 FOOBAR)
958 ac_case=upper
959 ac_foo_bar=FOO_BAR
960 ;;
961 esac
963 AC_LANG_PUSH(C)dnl
964 ac_success_extra=no
965 for ac_extra in "" "_"; do
966 ac_func="$ac_foo_bar$ac_underscore$ac_extra"
967 AC_LINK_IFELSE([AC_LANG_CALL([], [$ac_func])],
968 [ac_success_extra=yes; break])
969 done
970 AC_LANG_POP(C)dnl
972 if test "$ac_success_extra" = "yes"; then
973 ac_cv_[]_AC_LANG_ABBREV[]_mangling="$ac_case case"
974 if test -z "$ac_underscore"; then
975 ac_cv_[]_AC_LANG_ABBREV[]_mangling="$ac_cv_[]_AC_LANG_ABBREV[]_mangling, no underscore"
976 else
977 ac_cv_[]_AC_LANG_ABBREV[]_mangling="$ac_cv_[]_AC_LANG_ABBREV[]_mangling, underscore"
978 fi
979 if test -z "$ac_extra"; then
980 ac_cv_[]_AC_LANG_ABBREV[]_mangling="$ac_cv_[]_AC_LANG_ABBREV[]_mangling, no extra underscore"
981 else
982 ac_cv_[]_AC_LANG_ABBREV[]_mangling="$ac_cv_[]_AC_LANG_ABBREV[]_mangling, extra underscore"
983 fi
984 else
985 ac_cv_[]_AC_LANG_ABBREV[]_mangling="unknown"
986 fi
987 else
988 ac_cv_[]_AC_LANG_ABBREV[]_mangling="unknown"
989 fi
991 LIBS=$ac_save_LIBS
992 rm -f cfortran_test* conftest*],
993 [AC_MSG_FAILURE([cannot compile a simple Fortran program])])
994 ])
995 ])# __AC_FC_NAME_MANGLING
997 # The replacement is empty.
998 AU_DEFUN([AC_F77_NAME_MANGLING], [])
1001 # _AC_F77_NAME_MANGLING
1002 # ----------------------
1003 AC_DEFUN([_AC_F77_NAME_MANGLING],
1004 [AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])dnl
1005 AC_REQUIRE([AC_F77_DUMMY_MAIN])dnl
1006 AC_LANG_PUSH(Fortran 77)dnl
1007 __AC_FC_NAME_MANGLING
1008 AC_LANG_POP(Fortran 77)dnl
1009 ])# _AC_F77_NAME_MANGLING
1012 # _AC_FC_NAME_MANGLING
1013 # ----------------------
1014 AC_DEFUN([_AC_FC_NAME_MANGLING],
1015 [AC_REQUIRE([AC_FC_LIBRARY_LDFLAGS])dnl
1016 AC_REQUIRE([AC_FC_DUMMY_MAIN])dnl
1017 AC_LANG_PUSH(Fortran)dnl
1018 __AC_FC_NAME_MANGLING
1019 AC_LANG_POP(Fortran)dnl
1020 ])# _AC_FC_NAME_MANGLING
1023 # _AC_FC_WRAPPERS
1024 # ---------------
1025 # Defines C macros {F77,FC}_FUNC(name,NAME) and {F77,FC}_FUNC_(name,NAME) to
1026 # properly mangle the names of C identifiers, and C identifiers with
1027 # underscores, respectively, so that they match the name mangling
1028 # scheme used by the Fortran compiler.
1029 AC_DEFUN([_AC_FC_WRAPPERS],
1030 [_AC_FORTRAN_ASSERT()dnl
1031 AH_TEMPLATE(_AC_FC[_FUNC],
1032 [Define to a macro mangling the given C identifier (in lower and upper
1033 case), which must not contain underscores, for linking with Fortran.])dnl
1034 AH_TEMPLATE(_AC_FC[_FUNC_],
1035 [As ]_AC_FC[_FUNC, but for C identifiers containing underscores.])dnl
1036 case $ac_cv_[]_AC_LANG_ABBREV[]_mangling in
1037 "lower case, no underscore, no extra underscore")
1038 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [name])
1039 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [name]) ;;
1040 "lower case, no underscore, extra underscore")
1041 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [name])
1042 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [name ## _]) ;;
1043 "lower case, underscore, no extra underscore")
1044 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [name ## _])
1045 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [name ## _]) ;;
1046 "lower case, underscore, extra underscore")
1047 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [name ## _])
1048 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [name ## __]) ;;
1049 "upper case, no underscore, no extra underscore")
1050 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [NAME])
1051 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [NAME]) ;;
1052 "upper case, no underscore, extra underscore")
1053 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [NAME])
1054 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [NAME ## _]) ;;
1055 "upper case, underscore, no extra underscore")
1056 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [NAME ## _])
1057 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [NAME ## _]) ;;
1058 "upper case, underscore, extra underscore")
1059 AC_DEFINE(_AC_FC[_FUNC(name,NAME)], [NAME ## _])
1060 AC_DEFINE(_AC_FC[_FUNC_(name,NAME)], [NAME ## __]) ;;
1061 *)
1062 AC_MSG_WARN([unknown Fortran name-mangling scheme])
1063 ;;
1064 esac
1065 ])# _AC_FC_WRAPPERS
1068 # AC_F77_WRAPPERS
1069 # ---------------
1070 AC_DEFUN([AC_F77_WRAPPERS],
1071 [AC_REQUIRE([_AC_F77_NAME_MANGLING])dnl
1072 AC_LANG_PUSH(Fortran 77)dnl
1073 _AC_FC_WRAPPERS
1074 AC_LANG_POP(Fortran 77)dnl
1075 ])# AC_F77_WRAPPERS
1078 # AC_FC_WRAPPERS
1079 # --------------
1080 AC_DEFUN([AC_FC_WRAPPERS],
1081 [AC_REQUIRE([_AC_FC_NAME_MANGLING])dnl
1082 AC_LANG_PUSH(Fortran)dnl
1083 _AC_FC_WRAPPERS
1084 AC_LANG_POP(Fortran)dnl
1085 ])# AC_FC_WRAPPERS
1088 # _AC_FC_FUNC(NAME, [SHELLVAR = NAME])
1089 # ------------------------------------
1090 # For a Fortran subroutine of given NAME, define a shell variable
1091 # $SHELLVAR to the Fortran-mangled name. If the SHELLVAR
1092 # argument is not supplied, it defaults to NAME.
1093 AC_DEFUN([_AC_FC_FUNC],
1094 [_AC_FORTRAN_ASSERT()dnl
1095 case $ac_cv_[]_AC_LANG_ABBREV[]_mangling in
1096 upper*) ac_val="m4_toupper([$1])" ;;
1097 lower*) ac_val="m4_tolower([$1])" ;;
1098 *) ac_val="unknown" ;;
1099 esac
1100 case $ac_cv_[]_AC_LANG_ABBREV[]_mangling in *," underscore"*) ac_val="$ac_val"_ ;; esac
1101 m4_if(m4_index([$1],[_]),-1,[],
1102 [case $ac_cv_[]_AC_LANG_ABBREV[]_mangling in *," extra underscore"*) ac_val="$ac_val"_ ;; esac
1103 ])
1104 m4_default([$2],[$1])="$ac_val"
1105 ])# _AC_FC_FUNC
1108 # AC_F77_FUNC(NAME, [SHELLVAR = NAME])
1109 # ------------------------------------
1110 AC_DEFUN([AC_F77_FUNC],
1111 [AC_REQUIRE([_AC_F77_NAME_MANGLING])dnl
1112 AC_LANG_PUSH(Fortran 77)dnl
1113 _AC_FC_FUNC([$1],[$2])
1114 AC_LANG_POP(Fortran 77)dnl
1115 ])# AC_F77_FUNC
1118 # AC_FC_FUNC(NAME, [SHELLVAR = NAME])
1119 # -----------------------------------
1120 AC_DEFUN([AC_FC_FUNC],
1121 [AC_REQUIRE([_AC_FC_NAME_MANGLING])dnl
1122 AC_LANG_PUSH(Fortran)dnl
1123 _AC_FC_FUNC([$1],[$2])
1124 AC_LANG_POP(Fortran)dnl
1125 ])# AC_FC_FUNC
1128 # AC_FC_SRCEXT(EXT, [ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
1129 # -----------------------------------------------------------
1130 # Set the source-code extension used in Fortran (FC) tests to EXT (which
1131 # defaults to f). Also, look for any necessary additional FCFLAGS needed
1132 # to allow this extension, and store them in the output variable
1133 # FCFLAGS_<EXT> (e.g. FCFLAGS_f90 for EXT=f90). If successful,
1134 # call ACTION-IF-SUCCESS. If unable to compile source code with EXT,
1135 # call ACTION-IF-FAILURE, which defaults to failing with an error
1136 # message.
1137 #
1138 # (The flags for the current source-code extension, if any, are stored in
1139 # $ac_fcflags_srcext and used automatically in subsequent autoconf tests.)
1140 #
1141 # For ordinary extensions like f90, etcetera, the modified FCFLAGS
1142 # are currently needed for IBM's xlf* and Intel's ifc (grrr). Unfortunately,
1143 # xlf* will only take flags to recognize one extension at a time, so if the
1144 # user wants to compile multiple extensions (.f90 and .f95, say), she
1145 # will need to use the FCFLAGS_F90 and FCFLAGS_F95 individually rather
1146 # than just adding them all to FCFLAGS, for example.
1147 #
1148 # Also, for Intel's ifc compiler (which does not accept .f95 by default in
1149 # some versions), the $FCFLAGS_<EXT> variable *must* go immediately before
1150 # the source file on the command line, unlike other $FCFLAGS. Ugh.
1151 AC_DEFUN([AC_FC_SRCEXT],
1152 [AC_LANG_PUSH(Fortran)dnl
1153 AC_CACHE_CHECK([for Fortran flag to compile .$1 files],
1154 ac_cv_fc_srcext_$1,
1155 [ac_ext=$1
1156 ac_fcflags_srcext_save=$ac_fcflags_srcext
1157 ac_fcflags_srcext=
1158 ac_cv_fc_srcext_$1=unknown
1159 for ac_flag in none -qsuffix=f=$1 -Tf; do
1160 test "x$ac_flag" != xnone && ac_fcflags_srcext="$ac_flag"
1161 AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [ac_cv_fc_srcext_$1=$ac_flag; break])
1162 done
1163 rm -f conftest.$ac_objext conftest.$1
1164 ac_fcflags_srcext=$ac_fcflags_srcext_save
1165 ])
1166 if test "x$ac_cv_fc_srcext_$1" = xunknown; then
1167 m4_default([$3],[AC_MSG_ERROR([Fortran could not compile .$1 files])])
1168 else
1169 ac_fc_srcext=$1
1170 if test "x$ac_cv_fc_srcext_$1" = xnone; then
1171 ac_fcflags_srcext=""
1172 FCFLAGS_[]$1[]=""
1173 else
1174 ac_fcflags_srcext=$ac_cv_fc_srcext_$1
1175 FCFLAGS_[]$1[]=$ac_cv_fc_srcext_$1
1176 fi
1177 AC_SUBST(FCFLAGS_[]$1)
1178 $2
1179 fi
1180 AC_LANG_POP(Fortran)dnl
1181 ])# AC_FC_SRCEXT
1184 # AC_FC_FREEFORM([ACTION-IF-SUCCESS], [ACTION-IF-FAILURE = FAILURE])
1185 # ------------------------------------------------------------------
1186 # Look for a compiler flag to make the Fortran (FC) compiler accept
1187 # free-format source code, and adds it to FCFLAGS. Call
1188 # ACTION-IF-SUCCESS (defaults to nothing) if successful (i.e. can
1189 # compile code using new extension) and ACTION-IF-FAILURE (defaults to
1190 # failing with an error message) if not. (Defined via DEFUN_ONCE to
1191 # prevent flag from being added to FCFLAGS multiple times.)
1192 #
1193 # The known flags are:
1194 # -ffree-form: GNU g77
1195 # -FR: Intel compiler (icc, ecc)
1196 # -free: Compaq compiler (fort)
1197 # -qfree: IBM compiler (xlf)
1198 # -Mfree, -Mfreeform: Portland Group compiler
1199 # -freeform: SGI compiler
1200 # -f free: Absoft Fortran
1201 # We try to test the "more popular" flags first, by some prejudiced
1202 # notion of popularity.
1203 AC_DEFUN_ONCE([AC_FC_FREEFORM],
1204 [AC_LANG_PUSH(Fortran)dnl
1205 AC_CACHE_CHECK([for Fortran flag needed to allow free-form source],
1206 ac_cv_fc_freeform,
1207 [ac_cv_fc_freeform=unknown
1208 ac_fc_freeform_FCFLAGS_save=$FCFLAGS
1209 for ac_flag in none -ffree-form -FR -free -qfree -Mfree -Mfreeform \
1210 -freeform "-f free"
1211 do
1212 test "x$ac_flag" != xnone && FCFLAGS="$ac_fc_freeform_FCFLAGS_save $ac_flag"
1213 AC_COMPILE_IFELSE([
1214 program freeform
1215 ! FIXME: how to best confuse non-freeform compilers?
1216 print *, 'Hello ', &
1217 'world.'
1218 end],
1219 [ac_cv_fc_freeform=$ac_flag; break])
1220 done
1221 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
1222 FCFLAGS=$ac_fc_freeform_FCFLAGS_save
1223 ])
1224 if test "x$ac_cv_fc_freeform" = xunknown; then
1225 m4_default([$2],
1226 [AC_MSG_ERROR([Fortran does not accept free-form source], 77)])
1227 else
1228 if test "x$ac_cv_fc_freeform" != xnone; then
1229 FCFLAGS="$FCFLAGS $ac_cv_fc_freeform"
1230 fi
1231 $1
1232 fi
1233 AC_LANG_POP(Fortran)dnl
1234 ])# AC_FC_FREEFORM