[Scons-users] Problem with Fortran Dependency Scanner

[Nikolaus Rath]

Hi Damien,

No luck:

scons: Building targets ...
gfortran -o bar.o -c -g -Wall -O3 -DSETTING
-I/home/nikratio/tmp/scons-test/inc -J. bar.F
bar.F:2.9:

      USE com
         1
Fatal Error: Can't open module file 'com.mod' for reading at (1): No
such file or directory
scons: *** [bar.o] Error 1


Best,
-Nikolaus


On 04/27/2015 08:10 AM, Damien wrote:
> Try adding this to your flags:
> 
> env['FORTRANMODDIRPREFIX'] = '-J'
> env['FORTRANMODDIR'] = '${TARGET.dir}'
> 
> Modules and directories can be a bit of a pain...
> 
> Damien
> 
> On 2015-04-27 8:50 AM, Nikolaus Rath wrote:
>> Hello,
>>
>> I have the following tiny test project:
>>
>> $ find -type f
>> ./src1/foo.f
>> ./src1/bar.F
>> ./src1/bar.mod
>> ./src1/SConstruct
>> ./src2/com.f90
>> ./inc/params.f
>>
>> $ cat src1/bar.F
>>        PROGRAM bar
>>        USE com
>>        IMPLICIT NONE
>>
>>        PRINT *, 'Starting bar'
>>        PRINT *, 'Value of SETTING is', SETTING
>>        call com_sub
>>        PRINT *, 'End of bar'
>>        END
>>
>> $ cat src2/com.f90
>> MODULE com
>>    USE foo
>>    INTEGER:: com_int=17
>> CONTAINS
>>    subroutine com_sub
>>      PRINT *, 'Starting com_sub'
>>      CALL foo_sub
>>      PRINT *, 'End of com_sub'
>>    end SUBROUTINE com_sub
>> END MODULE com
>>
>> $ cat src1/foo.f
>>        MODULE foo
>>        IMPLICIT NONE
>>        INCLUDE 'params.f'
>>        INTEGER foo_int
>>
>>        CONTAINS
>>
>>        subroutine foo_sub
>>        PRINT *, 'In foo_sub'
>>        end SUBROUTINE
>>        END MODULE foo
>>
>> $ cat inc/params.f
>>        real,parameter::zero=0,one=1
>>
>>
>> I'm trying to build it with the following Scons script:
>>
>> $ cat src1/SConstruct
>> # Attention, emacs, this is a -*- python -*- file.
>> import os
>>
>> opts = Variables(None, ARGUMENTS)
>> opts.Add(BoolVariable('DEBUG', 'Enable debugging', False))
>> opts.Add(BoolVariable('SETTING', 'Enable setting', True))
>>
>> env = DefaultEnvironment(variables = opts,
>>                           ENV = {'PATH' : os.environ['PATH']})
>>
>> # Use the same settings for all Fortran dialects
>> for dialect in ('F77', 'F90', 'F95', 'F03'):
>>      for var_suffix in ('', 'FLAGS', 'PATH'):
>>          env['%s%s' % (dialect, var_suffix)] = \
>>              '${FORTRAN%s}' % var_suffix
>>
>> opts = Split('-g -Wall')
>> if env['DEBUG']:
>>      opts += Split('-O0 -g')
>> else:
>>      opts += Split('-O3')
>> env.Append(FORTRANFLAGS=opts, CPPDEFINES=['SETTING'],
>>             FORTRANPATH=['#/../inc'])
>>
>> sources = [ 'bar.F',
>>              'foo.f',
>>              '../src2/com.f90' ]
>>
>> # Object method returns both .mod and .o, so we filter for the latter.
>> objects = [ x for x in Object(sources) if x.get_suffix() == '.o' ]
>> Program('test', objects)
>>
>>
>> However, this fails with:
>>
>> $ scons
>> scons: Reading SConscript files ...
>> scons: done reading SConscript files.
>> scons: Building targets ...
>> gfortran -o /home/nikratio/tmp/scons-test/src2/com.o -c -g -Wall -O3
>> -I/home/nikratio/tmp/scons-test/inc
>> /home/nikratio/tmp/scons-test/src2/com.f90
>> /home/nikratio/tmp/scons-test/src2/com.f90:2.6:
>>
>>    USE foo
>>        1
>> Fatal Error: Can't open module file 'foo.mod' for reading at (1): No
>> such file or directory
>> scons: *** [/home/nikratio/tmp/scons-test/src2/com.o] Error 1
>> scons: building terminated because of errors.
>>
>>
>> It seems that Scons did not notice that src2/com.f90 depends on src1/foo.f.
>>
>>
>> Why is that?
>>
>>
>> With experimenting, I found out that it helps if I add '.' to
>> FORTRANPATH - but that seems wrong, because I don't want to include any
>> files from src1/.
>>
>>
>> Best,
>> -Nikolaus
>>
> 
> _______________________________________________
> Scons-users mailing list
> Scons-users at scons.org
> https://pairlist4.pair.net/mailman/listinfo/scons-users
> 


-- 
Nikolaus Rath, Ph.D.
Senior Scientist
Tri Alpha Energy, Inc.
+1 949 830 2117 ext 211