aclocal_fc.m4 37.6 KB
Newer Older
1
2
3
4
5
dnl PAC_FC_SEARCH_LIST - expands to a whitespace separated list of modern
dnl fortran compilers for use with AC_PROG_FC that is more suitable for HPC
dnl software packages
AC_DEFUN([PAC_FC_SEARCH_LIST],
         [ifort pgf90 pathf90 pathf95 xlf90 xlf95 xlf2003 gfortran f90 epcf90 f95 fort lf95 g95 ifc efc gfc])
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
dnl /*D
dnl PAC_PROG_FC([COMPILERS])
dnl
dnl COMPILERS is a space separated list of Fortran 77 compilers to search
dnl for.  Fortran 95 isn't strictly backwards-compatible with Fortran 77,
dnl but `f95' is worth trying.
dnl
dnl Compilers are ordered by
dnl  1. F77, F90, F95
dnl  2. Good/tested native compilers, bad/untested native compilers
dnl  3. Wrappers around f2c go last.
dnl
dnl `fort77' is a wrapper around `f2c'.
dnl It is believed that under HP-UX `fort77' is the name of the native
dnl compiler.  On some Cray systems, fort77 is a native compiler.
dnl frt is the Fujitsu F77 compiler.
dnl pgf77 and pgf90 are the Portland Group F77 and F90 compilers.
23
dnl xlf/xlf90/xlf95/xlf2003 are IBM (AIX) F77/F90/F95/F2003 compilers.
24
25
26
27
28
29
30
31
32
33
34
35
dnl lf95 is the Lahey-Fujitsu compiler.
dnl fl32 is the Microsoft Fortran "PowerStation" compiler.
dnl af77 is the Apogee F77 compiler for Intergraph hardware running CLIX.
dnl epcf90 is the "Edinburgh Portable Compiler" F90.
dnl fort is the Compaq Fortran 90 (now 95) compiler for Tru64 and Linux/Alpha.
dnl pathf90 is the Pathscale Fortran 90 compiler
dnl ifort is another name for the Intel f90 compiler
dnl efc - An older Intel compiler (?)
dnl ifc - An older Intel compiler
dnl fc  - A compiler on some unknown system.  This has been removed because
dnl       it may also be the name of a command for something other than
dnl       the Fortran compiler (e.g., fc=file system check!)
36
37
dnl gfortran - The GNU Fortran compiler (not the same as g95) 
dnl gfc - An alias for gfortran recommended in cygwin installations
38
39
dnl NOTE: this macro suffers from a basically intractable "expanded before it
dnl was required" problem when libtool is also used
40
dnl D*/
41
AC_DEFUN([PAC_PROG_FC],[
42
PAC_PUSH_FLAG([FCFLAGS])
43
AC_PROG_FC([m4_default([$1],[PAC_FC_SEARCH_LIST])])
44
PAC_POP_FLAG([FCFLAGS])
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
])
dnl
dnl PAC_FC_EXT checks for the default Fortran 90 program extension, f90 then f.
dnl This could be replaced by AC_FC_SRCEXT but since AC_FC_SRCEXT
dnl adds FCFLAGS_ext, which is used to modify FCFLAGS or Makefile.in.
dnl So will do this later.
dnl
AC_DEFUN([PAC_FC_EXT],[
AC_MSG_CHECKING([for extension for Fortran 90 programs])
ac_fc_srcext="f90"
AC_LANG_PUSH(Fortran)
AC_COMPILE_IFELSE([
    AC_LANG_PROGRAM()
],[
    AC_MSG_RESULT([f90])
],[
    ac_fc_srcext="f" 
    AC_COMPILE_IFELSE([
        AC_LANG_PROGRAM()
    ],[
        AC_MSG_RESULT([f])
    ],[
        AC_MSG_RESULT([unknown!])
    ])
])
AC_LANG_POP(Fortran)
])
dnl
dnl Internal routine for testing F90
dnl PAC_PROG_FC_WORKS()
dnl
AC_DEFUN([PAC_PROG_FC_WORKS],[
AC_REQUIRE([PAC_FC_EXT])
AC_LANG_PUSH(Fortran)
AC_MSG_CHECKING([whether the Fortran 90 compiler ($FC $FCFLAGS $LDFLAGS) works])
AC_LINK_IFELSE([
    AC_LANG_SOURCE([
        program conftest
        integer, dimension(10) :: n
        end
    ])
],[
    pac_cv_prog_fc_works="yes"
    AC_MSG_RESULT([$pac_cv_prog_fc_works])
    AC_MSG_CHECKING([whether the Fortran 90 compiler ($FC $FCFLAGS $LDFLAGS) is a cross-compiler])
    AC_RUN_IFELSE([],
    [pac_cv_prog_fc_cross="no"],
    [pac_cv_prog_fc_cross="yes"],
    [pac_cv_prog_fc_cross="$cross_compiling"]
    )
    AC_MSG_RESULT($pac_cv_prog_fc_cross)
],[
    pac_cv_prog_fc_works="no"
    AC_MSG_WARN([installation or configuration problem: Fortran 90 compiler cannot create executables.])
])
# The intel compiler sometimes generates these work.pc and .pcl files
rm -f work.pc work.pcl
AC_LANG_POP(Fortran)
dnl cross_compiling no longer maintained by autoconf as part of the
dnl AC_LANG changes.  If we set it here, a later AC_LANG may not 
dnl restore it (in the case where one compiler claims to be a cross compiler
dnl and another does not)
dnl cross_compiling=$pac_cv_prog_f90_cross
])
dnl/*D 
dnl PAC_PROG_FC_INT_KIND - Determine kind parameter for an integer with
dnl the specified number of bytes.
dnl
dnl Synopsis:
dnl  PAC_PROG_FC_INT_KIND(variable-to-set,number-of-bytes,[cross-size])
dnl
dnl D*/
AC_DEFUN([PAC_PROG_FC_INT_KIND],[
# Set the default
$1=-1
if test "$pac_cv_prog_fc_cross" = "yes" ; then
121
    AS_IF([test -z "$3"],[AC_MSG_ERROR(['$3' is empty])])
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
    $1="$3"
else
    AC_LANG_PUSH(Fortran)
    AC_MSG_CHECKING([for Fortran 90 integer kind for $2-byte integers])
    # Convert bytes to digits
    case $2 in 
        1) sellen=2 ;;
        2) sellen=4 ;;
        4) sellen=8 ;;
        8) sellen=16 ;;
       16) sellen=30 ;;
        *) sellen=8 ;;
    esac
    # Check for cached value
    eval testval=\$"pac_cv_prog_fc_int_kind_$sellen"
    if test -n "$testval" ; then 
        AC_MSG_RESULT([$testval (cached)])
        $1=$testval
    else
        KINDVAL="unavailable"
        eval "pac_cv_prog_fc_int_kind_$sellen"=-1
        AC_RUN_IFELSE([
            AC_LANG_SOURCE([
                program main
                integer ii
                ii = selected_int_kind($sellen)
                open(8, file="conftest1.out", form="formatted")
                write (8,*) ii
                close(8)
                stop
                end
            ])
        ],[pac_run_ok=yes],[pac_run_ok=no])
        if test "$pac_run_ok" = "yes" ; then
            if test -s conftest1.out ; then
                # Because of write, there may be a leading blank.
                KINDVAL=`cat conftest1.out | sed 's/ //g'`
                eval "pac_cv_prog_fc_int_kind_$sellen"=$KINDVAL
                $1=$KINDVAL
            fi
        fi
        AC_MSG_RESULT([$KINDVAL])
    fi # not cached
    AC_LANG_POP(Fortran)
fi # is not cross compiling
])dnl
dnl
dnl ------------------------------------------------------------------------
dnl Special characteristics that have no autoconf counterpart but that
dnl we need as part of the Fortran 90 support.  To distinquish these, they
dnl have a [PAC] prefix.
dnl 
174
175
176
177
dnl At least one version of the Cray compiler needs the option -em to
dnl generate a separate module file, rather than including the module
dnl information in the object (.o) file.
dnl
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
dnl
dnl PAC_FC_MODULE_EXT(action if found,action if not found)
dnl
AC_DEFUN([PAC_FC_MODULE_EXT],
[AC_CACHE_CHECK([for Fortran 90 module extension],
pac_cv_fc_module_ext,[
pac_cv_fc_module_case="unknown"
AC_LANG_PUSH(Fortran)
AC_COMPILE_IFELSE([
    AC_LANG_SOURCE([
        module conftest
        integer n
        parameter (n=1)
        end module conftest
    ])
],[
194
195
196
197
198
    # Look for module name
    # First, try to find known names.  This avoids confusion caused by
    # additional files (like <name>.stb created by some versions of pgf90)
    # Early versions of the Intel compiler used d as the module extension;
    # we include that just to finish the test as early as possible.
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
    for name in conftest CONFTEST ; do
        for ext in mod MOD d ; do
            if test -s $name.$ext ; then
                if test $name = conftest ; then
                    pac_cv_fc_module_case=lower
                else
                    pac_cv_fc_module_case=upper
                fi
                pac_cv_fc_module_ext=$ext
                pac_MOD=$ext
                break
            fi
        done
        if test -n "$pac_cv_fc_module_ext" ; then break ; fi
    done
    if test -z "$pac_MOD" ; then
215
216
        # The test on .err is needed for Cray Fortran.
        pac_MOD=`ls conftest.* 2>&1 | grep -v conftest.${ac_fc_srcext} | grep -v conftest.o | grep -v conftest.err`
217
218
219
        pac_MOD=`echo $pac_MOD | sed -e 's/conftest\.//g'`
        pac_cv_fc_module_case="lower"
        if test "X$pac_MOD" = "X" ; then
220
            pac_MOD=`ls CONFTEST* 2>&1 | grep -v CONFTEST.${ac_fc_srcext} | grep -v CONFTEST.o | grep -v CONFTEST.err`
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
            pac_MOD=`echo $pac_MOD | sed -e 's/CONFTEST\.//g'`
            if test -n "$pac_MOD" -a -s "CONFTEST.$pac_MOD" ; then
                pac_cv_fc_module_case="upper"
            else
                # Clear because we must have gotten an error message
                pac_MOD=""
            fi
        fi
        if test -z "$pac_MOD" ; then 
            pac_cv_fc_module_ext="unknown"
        else
            pac_cv_fc_module_ext=$pac_MOD
        fi
    fi
],[
    pac_cv_fc_module_ext="unknown"
])
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268

if test "$pac_cv_fc_module_ext" = "unknown" ; then
    # Try again, but with an -em option.  Abbreviated, because we're
    # just looking for the Cray option
    saveFCFLAGS=$FCFLAGS
    FCFLAGS="$FCFLAGS -em"
    AC_COMPILE_IFELSE([
    AC_LANG_SOURCE([
        module conftest
        integer n
        parameter (n=1)
        end module conftest
    ])
],[
    if test -s conftest.mod ; then
        pac_cv_fc_module_ext="mod"
        pac_cv_fc_module_case="lower"
    elif test -s CONFTEST.mod ; then
        pac_cv_fc_module_ext="mod"
        pac_cv_fc_module_case="upper"
    fi
],[
    :
    # do nothing - already have the unknown default value
])
    if test "$pac_cv_fc_module_ext" = "unknown" ; then
        # The additional command line option did not help - restore
        # the original flags.
        FCFLAGS=$saveFCFLAGS
    fi
fi
269
270
AC_LANG_POP(Fortran)
])
271
#
272
273
274
275
276
277
278
279
280
281
282
AC_SUBST(FCMODEXT)
if test "$pac_cv_fc_module_ext" = "unknown" ; then
    ifelse($2,,:,[$2])
else
    ifelse($1,,FCMODEXT=$pac_MOD,[$1])
fi
])
dnl
dnl
dnl PAC_FC_MODULE_INCFLAG
AC_DEFUN([PAC_FC_MODULE_INCFLAG],[
283
AC_REQUIRE([PAC_FC_MODULE_EXT])
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
AC_CACHE_CHECK([for Fortran 90 module include flag],
pac_cv_fc_module_incflag,[
AC_LANG_PUSH(Fortran)
AC_LANG_CONFTEST([
    AC_LANG_SOURCE([
        module conf
        integer n
        parameter (n=1)
        end module conf
    ])
])
pac_madedir="no"
if test ! -d conf ; then mkdir conftestdir ; pac_madedir="yes"; fi
if test "$pac_cv_fc_module_case" = "upper" ; then
    pac_module="CONF.$pac_cv_fc_module_ext"
else
    pac_module="conf.$pac_cv_fc_module_ext"
fi
AC_COMPILE_IFELSE([],[
    if test -s "$pac_module" ; then
        mv $pac_module conftestdir
        # Remove any temporary files, and hide the work.pc file
        # (if the compiler generates them)
        if test -f work.pc ; then 
            mv -f work.pc conftest.pc
        fi
        rm -f work.pcl
    else
        AC_MSG_WARN([Unable to build a simple Fortran 90 module])
        # echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
        # cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
        _AC_MSG_LOG_CONFTEST
    fi
317
],[])
318
319
320
321
322
323
324
325
326
327
328
# Remove the conftest* after AC_LANG_CONFTEST
rm -rf conftest.dSYM
rm -f conftest.$ac_ext

dnl Create the conftest here so the test isn't created everytime inside loop.
AC_LANG_CONFTEST([AC_LANG_PROGRAM([],[use conf])])

# Save the original FCFLAGS
saved_FCFLAGS="$FCFLAGS"
pac_cv_fc_module_incflag=""
for inchdr in '-I' '-M' '-p' ; do
329
    FCFLAGS="$saved_FCFLAGS ${inchdr}conftestdir"
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
    AC_COMPILE_IFELSE([],[pac_cv_fc_module_incflag="$inchdr" ; break])
done
if test "X$pac_cv_fc_module_incflag" = "X" ; then
    if test -s conftest.pc ; then
        mv conftest.pc conftestdir/mpimod.pc
        echo "mpimod.pc" > conftestdir/mpimod.pcl
        echo "`pwd`/conftestdir/mpimod.pc" >> conftestdir/mpimod.pcl
        inchdr='-cl,'
        FCFLAGS="$save_FCFLAGS ${inchdr}conftestdir"
        AC_COMPILE_IFELSE([], [pac_fcompile_ok=yes], [pac_fcompile_ok=no])
        if test "$pac_fcompile_ok" = "yes" ; then
            pac_cv_fc_module_incflag="$inchdr"
            # Not quite right; see the comments that follow
            AC_MSG_RESULT([-cl,filename where filename contains a list of files and directories])
            FC_WORK_FILES_ARG="-cl,mpimod.pcl"
            FCMODINCSPEC="-cl,<dir>/<file>mod.pcl"
        else 
            # The version of the Intel compiler that I have refuses to let
            # you put the "work catalog" list anywhere but the current directory.
            pac_cv_fc_module_incflag="Unavailable!"
        fi
    else
        # Early versions of the Intel ifc compiler required a *file*
        # containing the names of files that contained the names of the
        # 
        # -cl,filename.pcl
        #   filename.pcl contains
        #     fullpathname.pc
        # The "fullpathname.pc" is generated, I believe, when a module is 
        # compiled.  
        # Intel compilers use a wierd system: -cl,filename.pcl .  If no file is
        # specified, work.pcl and work.pc are created.  However, if you specify
362
        # a file, it must contain the name of a file ending in .pc .  Ugh!
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
        pac_cv_fc_module_incflag="unknown"
    fi
fi
# Restore the original FCFLAGS
FCFLAGS="$saved_FCFLAGS"
if test "$pac_madedir" = "yes" ; then rm -rf conftestdir ; fi
# Remove the conftest* after AC_LANG_CONFTEST
# This is needed for Mac OSX 10.5
rm -rf conftest.dSYM
rm -f conftest*
AC_LANG_POP(Fortran)
])
AC_SUBST(FC_WORK_FILES_ARG)
AC_SUBST(FCMODINCFLAG)
FCMODINCFLAG=$pac_cv_fc_module_incflag
])
dnl
dnl
dnl
AC_DEFUN([PAC_FC_MODULE],[
PAC_FC_MODULE_EXT
PAC_FC_MODULE_INCFLAG
385
PAC_FC_MODULE_OUTFLAG
386
387
])
dnl
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
dnl PAC_FC_MODULE_OUTFLAG
AC_DEFUN([PAC_FC_MODULE_OUTFLAG],[
AC_REQUIRE([PAC_FC_MODULE_EXT])
AC_CACHE_CHECK([for Fortran 90 module output directory flag],
               [pac_cv_fc_module_outflag],
[
AC_LANG_PUSH([Fortran])
AC_LANG_CONFTEST([
    AC_LANG_SOURCE([
        module conf
        integer n
        parameter (n=1)
        end module conf
    ])
])
pac_madedir="no"
if test ! -d conf ; then mkdir conftestdir ; pac_madedir="yes"; fi
if test "$pac_cv_fc_module_case" = "upper" ; then
    pac_module="CONF.$pac_cv_fc_module_ext"
else
    pac_module="conf.$pac_cv_fc_module_ext"
fi

# check base case that the compiler can create modules and that they endup in
# the current directory
AC_COMPILE_IFELSE([],[
    if test -s "$pac_module" ; then
        rm -f "$pac_module"
        # Remove any temporary files, and hide the work.pc file
        # (if the compiler generates them)
        if test -f work.pc ; then 
            mv -f work.pc conftest.pc
        fi
        rm -f work.pcl
    else
        AC_MSG_WARN([Unable to build a simple Fortran 90 module])
        # echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
        # cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
        _AC_MSG_LOG_CONFTEST
    fi
],[])

# known flags for reasonably recent versions of various f90 compilers:
#   gfortran -J${dir}
#   xlf -qmoddir=${dir}
#   pgf90 -module ${dir}
#   ifort -module ${dir}
#   nagfor -mdir ${dir}
436
437
438
439
440
#   ftn -J ${dir}              ## the Cray fortran compiler
#   ftn -em -J${dir}           ## the Cray fortran compiler (crayftn, in 2013)
#      For this above case, we must have added -em to FCFLAGS, since other
#      module tests do not always use the module output flag.  See
#      FC_MODULE_EXT , where this is determined.
441
#   f95 -YMOD_OUT_DIR=${dir}   ## the Absoft fortran compiler
442
443
#   lf95 -Am -mod ${dir}       ## the Lahey/Fujitsu fortran compiler
#   f90 -moddir=${dir}         ## the Sun f90 compiler
444
#   g95 -fmod=${dir}
445
446
447
#
# If there are any compilers still out there that are totally brain-dead and
# don't support an output directory flag, we can write a wrapper script to tell
448
# users to use.  Alternatively they can use an older version of MPICH.
449
450

pac_cv_fc_module_outflag=
451
for mod_flag in '-J' '-J ' '-qmoddir=' '-module ' '-YMOD_OUT_DIR=' '-mdir ' '-moddir=' '-fmod=' ; do
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
    rm -f conftestdir/NONEXISTENT conftestdir/*
    PAC_PUSH_FLAG([FCFLAGS])
    FCFLAGS="$FCFLAGS ${mod_flag}conftestdir"
    AC_COMPILE_IFELSE([],[pac_build_success=yes],[pac_build_success=no])
    AS_IF([test "X$pac_build_success" = Xyes],
          [AS_IF([test -s "conftestdir/${pac_module}"],
                 [pac_cv_fc_module_outflag="$mod_flag"])])
    PAC_POP_FLAG([FCFLAGS])
    AS_IF([test "X$pac_cv_fc_module_outflag" = X],[:],[break])
done

# Remove the conftest* after AC_LANG_CONFTEST
rm -rf conftest.dSYM
rm -f conftest.$ac_ext

if test "$pac_madedir" = "yes" ; then rm -rf conftestdir ; fi
AS_UNSET([pac_madedir])
# Remove the conftest* after AC_LANG_CONFTEST
# This is needed for Mac OSX 10.5
rm -rf conftest.dSYM
rm -f conftest*
AC_LANG_POP(Fortran)
])dnl end AC_CACHE_CHECK

AC_SUBST([FCMODOUTFLAG],[$pac_cv_fc_module_outflag])
])dnl end AC_DEFUN([PAC_FC_MODULE_OUTFLAG])
dnl
479
480
481
482
483
484
485
486
487
488
dnl PAC_FC_AND_F77_COMPATIBLE([action-if-true],[action-if-false])
dnl
dnl Determine whether object files compiled with Fortran 77 can be 
dnl linked to Fortran 90 main programs.
dnl
dnl The test uses a name that includes an underscore unless the 3rd
dnl argument provides another routine name.
dnl
AC_DEFUN([PAC_FC_AND_F77_COMPATIBLE],[
AC_REQUIRE([PAC_PROG_FC_WORKS])
489
AC_CACHE_CHECK([whether Fortran 90 compiler works with Fortran 77 compiler],
490
pac_cv_fc_and_f77,[
491
pacTestRoutine=foo_abc
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
ifelse([$3],,,[eval pacTestRoutine=$3])
pac_cv_fc_and_f77="unknown"
# compile the f77 program and link with the f90 program
# The reverse may not work because the Fortran 90 environment may
# expect to be in control (and to provide library files unknown to any other
# environment, even Fortran 77!)
AC_LANG_PUSH(Fortran 77)
AC_COMPILE_IFELSE([
    AC_LANG_SOURCE([
        subroutine ${pacTestRoutine}(b)
        integer b
        b = b + 1
        end
    ])
],[
    # pac_f77compile_ok=yes
508
    PAC_RUNLOG([mv conftest.$OBJEXT pac_f77conftest.$OBJEXT])
509
510
    # Save original LIBS, prepend previously generated object file to LIBS
    saved_LIBS="$LIBS"
511
    LIBS="pac_f77conftest.$OBJEXT $LIBS"
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
    AC_LANG_PUSH(Fortran)
    AC_LINK_IFELSE([
        AC_LANG_SOURCE([
            program main
            integer a
            a = 1
            call ${pacTestRoutine}(a)
            end
        ])
    ],[pac_cv_fc_and_f77=yes],[pac_cv_fc_and_f77=no])
    # Some versions of the Intel compiler produce these two files
    rm -f work.pc work.pcl
    # Restore LIBS
    LIBS="$saved_LIBS"
    AC_LANG_POP(Fortran)
    # remove previously generated object file.
528
    rm -f pac_f77conftest.$OBJEXT
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
], [
    # pac_f77compile_ok=no
    pac_cv_fc_and_f77=no
])
AC_LANG_POP(Fortran 77)
# Perform the requested action based on whether the test succeeded
if test "$pac_cv_fc_and_f77" = yes ; then
    ifelse($1,,:,[$1])
else
    ifelse($2,,:,[$2])
    AC_MSG_WARN([See config.log for the failed test program and its output.])
fi
])
dnl
])
dnl
dnl
dnl /*D 
547
548
549
550
551
552
dnl PAC_PROG_FC_CRAY_POINTER - Check if Fortran supports Cray-style pointer.
dnl                            If so, set pac_cv_prog_fc_has_pointer to yes
dnl                            and find out if any extra compiler flag is
dnl                            needed and set it as CRAYPTR_FCFLAGS.
dnl                            i.e. CRAYPTR_FCFLAGS is meaningful only if
dnl                            pac_cv_prog_fc_has_pointer = yes.
553
554
dnl
dnl Synopsis:
555
dnl   PAC_PROG_FC_CRAY_POINTER([action-if-true],[action-if-false])
556
dnl D*/
557
AC_DEFUN([PAC_PROG_FC_CRAY_POINTER],[
558
AC_CACHE_CHECK([whether Fortran 90 supports Cray-style pointer],
559
pac_cv_prog_fc_has_pointer,[
560
AC_LANG_PUSH([Fortran])
561
AC_LANG_CONFTEST([
562
563
564
565
566
    AC_LANG_PROGRAM([],[
        integer M
        pointer (MPTR,M)
        data MPTR/0/
    ])
567
568
])
saved_FCFLAGS="$FCFLAGS"
569
570
pac_cv_prog_fc_has_pointer=no
CRAYPTR_FCFLAGS=""
571
572
for ptrflag in '' '-fcray-pointer' ; do
    FCFLAGS="$saved_FCFLAGS $ptrflag"
573
574
575
576
577
    AC_COMPILE_IFELSE([],[
        pac_cv_prog_fc_has_pointer=yes
        CRAYPTR_FCFLAGS="$ptrflag"
        break
    ])
578
done
579
dnl Restore FCFLAGS first, since user may not want to modify FCFLAGS
580
581
582
583
FCFLAGS="$saved_FCFLAGS"
dnl remove conftest after ac_lang_conftest
rm -f conftest.$ac_ext
AC_LANG_POP([Fortran])
584
])
585
586
587
588
589
590
591
592
if test "$pac_cv_prog_fc_has_pointer" = "yes" ; then
    AC_MSG_CHECKING([for Fortran 90 compiler flag for Cray-style pointer])
    if test "X$CRAYPTR_FCFLAGS" != "X" ; then
        AC_MSG_RESULT([$CRAYPTR_FCFLAGS])
    else
        AC_MSG_RESULT([none])
    fi
    ifelse([$1],[],[:],[$1])
593
else
594
    ifelse([$2],[],[:],[$2])
595
596
597
598
599
600
fi
])
dnl
dnl
dnl
AC_DEFUN([PAC_PROG_FC_AND_C_STDIO_LIBS],[
601
AC_REQUIRE([AC_HEADER_STDC])
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
# To simply the code in the cache_check macro, chose the routine name
# first, in case we need it
confname=conf1_
case "$pac_cv_prog_f77_name_mangle" in
    "lower underscore")       confname=conf1_  ;;
    "upper stdcall")          confname=CONF1   ;;
    upper)                    confname=CONF1   ;;
    "lower doubleunderscore") confname=conf1_  ;;
    lower)                    confname=conf1   ;;
    "mixed underscore")       confname=conf1_  ;;
    mixed)                    confname=conf1   ;;
esac

AC_CACHE_CHECK([what libraries are needed to link Fortran90 programs with C routines that use stdio],pac_cv_prog_fc_and_c_stdio_libs,[
pac_cv_prog_fc_and_c_stdio_libs=unknown

AC_LANG_PUSH(C)
AC_COMPILE_IFELSE([
    AC_LANG_SOURCE([
621
#if defined(HAVE_STDIO_H) || defined(STDC_HEADERS)
622
#include <stdio.h>
623
#endif
624
625
626
627
628
int $confname( int a )
{ printf( "The answer is %d\n", a ); fflush(stdout); return 0; }
    ])
],[
    pac_compile_ok=yes
629
    PAC_RUNLOG([mv conftest.$OBJEXT pac_conftest.$OBJEXT])
630
631
    # Save LIBS and prepend object file to LIBS
    saved_LIBS="$LIBS"
632
    LIBS="pac_conftest.$OBJEXT $LIBS"
633
634
635
636
637
638
639
640
641
642
643
644
645
646
    AC_LANG_PUSH(Fortran)
    AC_LINK_IFELSE([
        AC_LANG_PROGRAM([],[call conf1(0)])
    ],[
        pac_cv_prog_fc_and_c_stdio_libs=none
    ],[
        # Try again with -lSystemStubs
        LIBS="$LIBS -lSystemStubs"
        AC_LINK_IFELSE([],[
            pac_cv_prog_fc_and_c_stdio_libs="-lSystemStubs"
        ],[])
    ])
    LIBS="$saved_LIBS"
    AC_LANG_POP(Fortran)
647
    rm -f pac_conftest.$OBJEXT
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
])
AC_LANG_POP(C)
dnl
if test "$pac_cv_prog_fc_and_c_stdio_libs" != none -a \
        "$pac_cv_prog_fc_and_c_stdio_libs" != unknown ; then
    FC_OTHER_LIBS="$FC_OTHER_LIBS $pac_cv_prog_fc_and_c_stdio_libs"    
fi
])
dnl
])
dnl
dnl/*D
dnl PAC_FC_CHECK_COMPILER_OPTION - Check that a FC compiler option is
dnl accepted without warning messages
dnl
dnl Synopsis:
dnl PAC_FC_CHECK_COMPILER_OPTION(optionname,action-if-ok,action-if-fail)
dnl
dnl Output Effects:
dnl
dnl If no actions are specified, a working value is added to 'FCOPTIONS'
dnl
dnl Notes:
dnl This is now careful to check that the output is different, since 
dnl some compilers are noisy.
dnl 
dnl We are extra careful to prototype the functions in case compiler options
dnl that complain about poor code are in effect.
dnl
dnl Because this is a long script, we have ensured that you can pass a 
dnl variable containing the option name as the first argument.
dnl D*/
AC_DEFUN([PAC_FC_CHECK_COMPILER_OPTION],[
AC_MSG_CHECKING([whether Fortran 90 compiler accepts option $1])
pac_opt="$1"
AC_LANG_PUSH(Fortran)
FCFLAGS_orig="$FCFLAGS"
FCFLAGS_opt="$pac_opt $FCFLAGS"
pac_result="unknown"
687

688
689
AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
FCFLAGS="$FCFLAGS_orig"
690
691
rm -f pac_test1.log
PAC_LINK_IFELSE_LOG([pac_test1.log], [], [
692
    FCFLAGS="$FCFLAGS_opt"
693
694
    rm -f pac_test2.log
    PAC_LINK_IFELSE_LOG([pac_test2.log], [], [
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
        PAC_RUNLOG_IFELSE([diff -b pac_test1.log pac_test2.log],
                          [pac_result=yes], [pac_result=no])
    ],[
        pac_result=no
    ])
], [
    pac_result=no
])
AC_MSG_RESULT([$pac_result])
dnl Delete the conftest created by AC_LANG_CONFTEST.
rm -f conftest.$ac_ext
#
if test "$pac_result" = "yes" ; then
    AC_MSG_CHECKING([whether routines compiled with $pac_opt can be linked with ones compiled without $pac_opt])
    pac_result=unknown
    FCFLAGS="$FCFLAGS_orig"
711
712
    rm -f pac_test3.log
    PAC_COMPILE_IFELSE_LOG([pac_test3.log], [
713
714
715
716
717
        AC_LANG_SOURCE([
            subroutine try()
            end
        ])
    ],[
718
        PAC_RUNLOG([mv conftest.$OBJEXT pac_conftest.$OBJEXT])
719
        saved_LIBS="$LIBS"
720
        LIBS="pac_conftest.$OBJEXT $LIBS"
721
722

        FCFLAGS="$FCFLAGS_opt"
723
724
        rm -f pac_test4.log
        PAC_LINK_IFELSE_LOG([pac_test4.log], [AC_LANG_PROGRAM()], [
725
726
727
728
729
730
            PAC_RUNLOG_IFELSE([diff -b pac_test2.log pac_test4.log],
                              [pac_result=yes], [pac_result=no])
        ],[
            pac_result=no
        ])
        LIBS="$saved_LIBS"
731
        rm -f pac_conftest.$OBJEXT
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
    ],[
        pac_result=no
    ])
    AC_MSG_RESULT([$pac_result])
    rm -f pac_test3.log pac_test4.log
fi
rm -f pac_test1.log pac_test2.log

dnl Restore FCFLAGS before 2nd/3rd argument commands are executed,
dnl as 2nd/3rd argument command could be modifying FCFLAGS.
FCFLAGS="$FCFLAGS_orig"
if test "$pac_result" = "yes" ; then
     ifelse([$2],[],[FCOPTIONS="$FCOPTIONS $1"],[$2])
else
     ifelse([$3],[],[:],[$3])
fi
AC_LANG_POP(Fortran)
])
dnl /*D
dnl PAC_FC_WORKS_WITH_CPP
dnl
dnl Checks if Fortran 90 compiler works with C preprocessor
dnl
dnl Most systems allow the Fortran compiler to process .F and .F90 files
dnl using the C preprocessor.  However, some systems either do not
dnl allow this or have serious bugs (OSF Fortran compilers have a bug
dnl that generates an error message from cpp).  The following test
dnl checks to see if .F works, and if not, whether "cpp -P -C" can be used
dnl D*/
AC_DEFUN([PAC_FC_WORKS_WITH_CPP],[
AC_REQUIRE([AC_PROG_CPP])
AC_MSG_CHECKING([whether Fortran 90 compiler processes .F90 files with C preprocessor])
AC_LANG_PUSH([Fortran])
saved_fc_ext=${ac_ext}
ac_ext="F90"
saved_FCFLAGS="$FCFLAGS"
FCFLAGS="$FCFLAGS $CPPFLAGS"
AC_LANG_CONFTEST([
    AC_LANG_SOURCE([
        program main
#define ASIZE 10
        integer a(ASIZE)
        end
    ])
])
AC_COMPILE_IFELSE([],[
    pac_cv_fc_accepts_F90=yes
    ifelse([$1],[],[],[$1=""])
],[
    pac_cv_fc_accepts_F90=no
    ifelse([$1],[],[:],[$1="false"])
])
# Restore Fortran's ac_ext but not FCFLAGS
ac_ext="$saved_fc_ext"

if test "$pac_cv_fc_accepts_F90" != "yes" ; then
    pac_cpp_fc="$ac_cpp -C -P conftest.F90 > conftest.$ac_ext"
    PAC_RUNLOG_IFELSE([$pac_cpp_fc],[
        if test -s conftest.${ac_ext} ; then
            AC_COMPILE_IFELSE([],[
                pac_cv_fc_accepts_F90="no, use cpp"
                ifelse([$1],[],[],[$1="$CPP -C -P"])
            ],[])
            rm -f conftest.${ac_ext}
        fi
    ],[])
fi
FCFLAGS="$saved_FCFLAGS"
rm -f conftest.F90
AC_LANG_POP([Fortran])
AC_MSG_RESULT([$pac_cv_fc_accepts_F90])
])
dnl
dnl PAC_FC_VENDOR:
dnl Try to get a version string for the F90 compiler.  We may
dnl need this to find likely command-line arguments for accessing
dnl shared libraries
dnl
AC_DEFUN([PAC_FC_VENDOR],[
AC_MSG_CHECKING([for Fortran 90 compiler vendor])
# This is complicated by some compilers (such as the Intel 8.1 ifort)
# that return a non-zero status even when they accept the -V option
# (a zero status is returned only if there is a file).
pac_cv_fc_vendor="unknown"
for arg in --version -V -v ; do
    rm -f conftest.txt
818
    PAC_RUNLOG([$FC $arg </dev/null >conftest.txt 2>&1])
819
820
821
822
823
824
825
826
    # Ignore the return code, because some compilers set the
    # return code to zero on invalid arguments and some to 
    # non-zero on success (with no files to compile)
    if test -f conftest.txt ; then
        if grep 'Portland Group' conftest.txt >/dev/null 2>&1 ; then
            pac_cv_fc_vendor=pgi
        elif grep 'Sun Workshop' conftest.txt >/dev/null 2>&1 ; then
            pac_cv_fc_vendor=sun
827
828
	elif grep 'Sun Fortran 9' conftest.txt >/dev/null 2>&1 ; then 
	    pac_cv_fc_vendor=sun
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
        elif grep 'Absoft' conftest.txt >/dev/null 2>&1 ; then
            pac_cv_fc_vendor=absoft
        elif grep 'G95' conftest.txt >/dev/null 2>&1 ; then
            pac_cv_fc_vendor=gnu
        elif grep 'GNU Fortran' conftest.txt >/dev/null 2>&1 ; then
            # This is gfortran
            pac_cv_fc_vendor=gnu
        elif grep Intel conftest.txt >/dev/null 2>&1 ; then
            pac_cv_fc_vendor=intel
        fi
    fi
    if test "$pac_cv_fc_vendor" != "unknown" ; then break ; fi
done
if test "$pac_cv_fc_vendor" = "unknown" ; then
    # Try to use the compiler name
844
    if test "$FC" = "ifort" -o "$FC" = "ifc" ; then
845
        pac_cv_fc_vendor=intel
846
    elif test "$FC" = "pgf90" ; then
847
        pac_cv_fc_vendor=pgi
848
849
850
    elif test "$FC" = "xlf90" -o "$FC" = "xlf90_r" ; then
        pac_cv_fc_vendor=ibm
    elif test "$FC" = "xlf95" -o "$FC" = "xlf95_r" ; then
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
        pac_cv_fc_vendor=ibm
    fi
fi
AC_MSG_RESULT([$pac_cv_fc_vendor])
rm -f conftest.txt
# End of checking for F90 compiler vendor
])
dnl
dnl PAC_F77_IS_FC([ACTION_IF_TRUE],[ACTION_IF_FALSE])
dnl Check if F77 is a Fortran 90 compiler.
dnl
AC_DEFUN([PAC_F77_IS_FC],[
AC_MSG_CHECKING([whether $F77 is a Fortran 90 compiler])
AC_LANG_PUSH([Fortran 77])
saved_ac_ext=$ac_ext
ac_ext="f90"
AC_LINK_IFELSE([
    AC_LANG_SOURCE([
        program main
        integer, dimension(10) :: n
        integer k
        print *,  range(k)
        end
    ])
],[
    pac_cv_prog_f77_is_fc=yes
    ifelse([$1],[],[],[$1])
],[
    pac_cv_prog_f77_is_fc=no
    ifelse([$2],[],[],[$2])
])
AC_MSG_RESULT([$pac_cv_prog_f77_is_fc])
AC_LANG_POP([Fortran 77])
])
dnl
dnl PAC_FC_FLOAT_MODEL(float_type, [variable-set-if-successful-test])
dnl variable-set-if-successful-test is optional variable.
dnl
dnl This is a runtime test.
dnl
AC_DEFUN([PAC_FC_FLOAT_MODEL],[
type="$1"
AC_MSG_CHECKING([for precision and range of $type])
AC_LANG_PUSH([Fortran])
895
896
rm -f pac_fconftest.out
AC_RUN_IFELSE([
897
898
899
    AC_LANG_SOURCE([
        program main
        $type aa
900
901
902
        open(8, file="pac_fconftest.out", form="formatted")
        write(8,*) precision(aa), ",", range(aa)
        close(8)
903
904
905
        end
    ])
],[
906
907
    if test -s pac_fconftest.out ; then
        pac_fc_num_model="`sed -e 's/  */ /g' pac_fconftest.out`"
908
909
910
        AC_MSG_RESULT([$pac_fc_num_model])
        ifelse([$2],[],[],[$2=$pac_fc_num_model])
    else
911
        AC_MSG_RESULT([Error])
912
913
        AC_MSG_WARN([No output from test program!])
    fi
914
    rm -f pac_fconftest.out
915
],[
916
917
    AC_MSG_RESULT([Error])
    AC_MSG_WARN([Failed to run program to determine the precision and range of $type])
918
919
920
921
])
AC_LANG_POP([Fortran])
])
dnl
922
923
dnl PAC_FC_SIMPLE_NUMBER_MODEL(message, Fortran-type, Fortran-write,
dnl                            [variable-set-if-successful-test],
924
dnl                            [cross-value])
925
926
927
928
dnl
dnl message        : message of what test-fc-code is checking
dnl Fortran-type   : Fortran90 type's data model to be examined.
dnl Fortran-write  : Fortran90 type's write statement used with write(N,*).
929
dnl variable-set-if-successful-test :
930
931
932
933
dnl                  The optional variable to be set if the codelet:
dnl                  "Fortran-type" + "write(N,*) Fortran-write"
dnl                  is successful in returning the simple data model.
dnl cross-value    : value to be used for above variable when
934
dnl                  cross_compiling=yes
935
936
937
938
939
940
941
dnl
dnl This is a runtime test.
dnl
AC_DEFUN([PAC_FC_SIMPLE_NUMBER_MODEL],[
pac_msg="$1"
AC_MSG_CHECKING([for $pac_msg])
AC_LANG_PUSH([Fortran])
942
943
944
945
rm -f pac_fconftest.out
AC_RUN_IFELSE([
    AC_LANG_SOURCE([
        program main
946
        $2
947
948
949
950
        open(8, file="pac_fconftest.out", form="formatted")
        write(8,*) $3
        close(8)
        end
951
952
    ])
],[
953
954
    if test -s pac_fconftest.out ; then
        pac_fc_num_model="`sed -e 's/  */ /g' pac_fconftest.out`"
955
        AC_MSG_RESULT([$pac_fc_num_model])
956
        ifelse([$4],[],[],[$4=$pac_fc_num_model])
957
    else
958
        AC_MSG_RESULT([Error])
959
960
        AC_MSG_WARN([No output from test program!])
    fi
961
    rm -f pac_fconftest.out
962
],[
963
964
    AC_MSG_RESULT([Error])
    AC_MSG_WARN([Failed to run program to determine $pac_msg])
965
],[
966
967
    AC_MSG_RESULT([$5])
    ifelse([$4],[],[],[$4=$5])
968
969
970
971
])
AC_LANG_POP([Fortran])
])
dnl
972
973
974
975
976
dnl PAC_FC_AVAIL_INTEGER_MODELS([INTEGER-MODELS-FLAG],[CROSS-VARIABLE])
dnl
dnl INTEGER-MODELS-FLAG : an optional variable to be set if provided.
dnl                       If it isn't provided, PAC_FC_ALL_INTEGER_MODELS
dnl                       will be set.
977
dnl CROSS-VALUE         : value will be used to set INTEGER-MODELS-FLAG
978
dnl                       or PAC_FC_ALL_INTEGER_MODELS if cross_compiling=yes.
979
980
981
982
983
984
dnl
dnl This is a runtime test.
dnl
AC_DEFUN([PAC_FC_AVAIL_INTEGER_MODELS],[
AC_MSG_CHECKING([for available integer kinds])
AC_LANG_PUSH([Fortran])
985
986
rm -f pac_fconftest.out
AC_RUN_IFELSE([
987
988
989
990
    AC_LANG_SOURCE([
        program main
        integer r, lastkind
        lastkind=selected_int_kind(1)
991
        open(8, file="pac_fconftest.out", form="formatted")
992
993
994
        do r=2,30
             k = selected_int_kind(r)
             if (k .ne. lastkind) then
995
                  write(8,*) r-1, ",", lastkind
996
997
998
999
1000
                  lastkind = k
             endif
             if (k .le. 0) then
                 exit
             endif
For faster browsing, not all history is shown. View entire blame