Ubuntu Manpage: makedepf90 - creates Makefile dependency list for Fortran source files.

NAME

       makedepf90 - creates Makefile dependency list for Fortran source files.

SYNOPSIS

       makedepf90  [-h]  [-V]  [-W|-Wmissing] [-Wconfused] [-m fmt] [-u modulename] [-d file] [-r rule] [-R file
       rule] [-fixed|-free]  [-o  name-of-executable]  [-coco]  [-D  NAME]  [-b|-B  path]  [-I  PATH1:PATH2:...]
       [-nosrc] sourcefile(s)

DESCRIPTION

makedepf90 is a program for automatic creation of dependency lists and compilation rules for Makefiles.

The original idea was to provide the same functionality for Fortran as

gcc -MM *.c

does for C. Nowadays makedepf90 actually supersedes this functionality, making me wonder if I should
extend makedepf90 to support C and C++ too ;-).

makedepf90 supports both modules, include:s, cpp(1) #include:s, f90ppr(1) $include:s and coco(1)
??includes and set-files.

makedepf90 reads Fortran source files given on the command line, and writes a dependency list to stdout;
for every file it writes a line with the following format:

targets : prerequisites

Targets are the files that will be the result of compiling the file with the -c option, and prerequisites
are files that are needed to compile the file. In addition, makedepf90 can optionally create the
dependency line and make-rule needed to link the final executable.

Fortran dependencies
The files needed to compile a file, i.e the prerequisites of the file are:

— The source file itself

— Files with interface information about USEd modules, created by the compiler while compiling the
modules (often named modulename.mod or something similar, hereafter called mod-files).

— Include-files (including files included and mod-files of modules USEd from these include-files).

— Coco set-files, if coco(1) is being used and set-files exist.

Since different compilers use different naming conventions for the mod-files, listing them in the
dependency list results in non-portable makefiles. Therefore it's common practise to list the object
file (filename.o) corresponding to the sourcefile containing the USEd modules instead. This is the
default behaviour of makedepf90. To change this, use the -m option (e.g -m "%m.mod" if your compiler
names the mod files modulename.mod)

Include files not found in the working directory will not be listed in the dependency list, assuming they
are part of a (seldom changing) library not part of the program. Neither will mod-files of modules whose
definitions aren't found be listed by the same reason.

OPTIONS

These options may be given anywhere, in any order, on the command line. Space between an option and its
argument is optional. Options may not be grouped (-hW is not the same thing as -h -W).

-h or --help
Print a short help message to stdout and quit.

-V or --version
Print version and copyright information to stdout and quit

-W or -Wmissing
Print warnings about missing modules and include files

-Wconfused
Print warnings when confused (either because of bugs in makedepf90 itself, or because of wierd
things in your source files). If makedepf90 misses some dependencies, or do other wierd things,
this option might give some idea on whats going on.

-m fmt Tell makedepf90 that mod-files will have names of the format fmt. fmt may contain the modifiers
%f for filename (without file name .suffix), %m for modulename (in lowercase), %M for MODULENAME
(in uppercase) and %% for '%'. Default is "%f.o".

-u modulename
Ignore all modules named modulename.

-d file
Make all targets dependent on file.

-r rule
Add rule (indented by a tab) to all dependency lines except lines given rule(s) with the -R
option.

rule may contains the following modifiers: %f for the name of the source file (without suffix) the
dependency line is created for, and %% for '%'.

-R 'pattern' 'rule'
Compile files matching the shell pattern pattern using the rule rule. In pattern, the following
wildcards can be used: * = any number of any characters, ? = any character and [abc] = any of a, b
or c. Note that the patter-matching is to be performed by makedepf90, not the shell. Therefore
pattern should be enclosed in quotes (" or '). For rule applies the same rules as for -r above.

Note that there is a subtle difference between "-r rule" and "-R '*' rule". In the former case
rule will be applied only to lines not given any rule using -R, while in the latter case, rule
will be applied to all lines.

-fixed / -free
Treat the files as fixed/free source format. If both options are given, the latter is used.
Default: Files with suffixes .f, .F, .for, .FOR or .ftn are treated as fixed format and .f90,
.F90, .f95 or .F95 are treated as free format.

-o name
This option will cause makedepf90 to define the Makefile macro FOBJ=objectfiles, and a dependency
line + rule for the final linking process to create the executable name. To set the linking rule,
use the option -l.

-l rule
Use rule when linking the executable. The default is
$(FC) -o $@ $(FFLAGS) $(LDFLAGS) $(FOBJ) $(LIBS).
This option has no effect unless -o is used.

-coco Look for coco(1) set-files (coco ??include:s are supported automatically). This option implies
-free.

-D NAME
Define the pre-processor symbol NAME.

-b path
Dependency tree and link rule will assume objects are placed in path. This is useful if the build
places object files in a different directory than the source files.

-B path
Dependency tree and link rule will assume objects are placed in path using the same directory
structure as the source files. This is useful if the build places object files in a different
directory than the source files and the source directory structure is needed to avoid object name
collisions.

-I list-of-paths
Look for source/include files in the list-of-paths, if not found in current working directory.
Here, list-of-paths is a colon separated list of path names.

-nosrc Don't list the source file among the prerequisites.

EXAMPLES

   Basic Usage
       Here's an example of basic makedepf90 usage together with make(1).  Create a file named Makefile with the
       following contents:

       ----------------------

        # FC = the compiler to use
        FC=f90

        # Compiler options
        FFLAGS=-O

        # List libraries used by the program here
        LIBS=

        # Suffix-rules:  Begin by throwing away all old suffix-
        # rules, and then create new ones for compiling
        # *.f90-files.
        .SUFFIXES:
        .SUFFIXES: .f90 .o

        .f90.o:
            $(FC) -c $(FFLAGS) $<

        # Include the dependency-list created by makedepf90 below
        include .depend

        # target 'clean' for deleting object- *.mod- and other
        # unwanted files
        clean:
            rm -f *.o *.mod core

        # Create a dependency list using makedepf90.  All files
        # that needs to be compiled to build the program,
        # i.e all source files except include files, should
        # be given on the command line to makedepf90.
        #
        # The argument to the '-o' option will be the name of the
        # resulting program when running 'make', in this case
        # 'foobar'
        depend .depend:
            makedepf90 -o foobar *.f90 > .depend

       -----------------------

       (Note that all the indented lines should be indented with tabs, not spaces)

       With this makefile, the command make should perform all the commands  needed  to  compile  and  link  the
       program foobar out of all *.f90 files in the working directory.

       The  dependency  list .depend will be (re)created if .depend doesn't exist, or if the command make depend
       is run.  This should be done every time changes has been made to the program that affect the dependencies
       of the files (e.g if new source files has been added to the project).

   Example With Coco
       If  you  are  using  a pre-processor, things might get more complicated.  If you are lucky, your compiler
       supports your pre-processor and runs it on your code automatically, but if it doesn't, you have  to  give
       the commands to run the pre-processor yourself.  Below is an example of an Makefile for coco(1)-users.

       -----------------------
        FC=f90
        FFLAGS=-O
        PREPROCESSOR=coco

        .SUFFIXES:
        .SUFFIXES: .f .f90 .o

        # Files ending in .f90 are compiled directly ...
        .f90.o:
               $(FC) -c $(FFLAGS) $<

        # ... while those ending in .f are preprocessed first.
        .f.o:
               $(PREPROCESSOR) $*; $(FC) -c $(FFLAGS) $*.f90

        include .depend

        clean:
            rm -f *.o *.mod core

        depend .depend:
               makedepf90 -coco -o foobar *.f90 *.f > .depend

       -----------------------

       NOTE:  Some  implementations  of  make(1) will not execute any commands — not even make depend — with the
       Makefiles above unless there exists a file named .depend. To overcome this problem, either run makedepf90
       manually, or begin by creating an empty .depend file with the command touch .depend.

DIAGNOSTICS

       Most  error  and  warning  messages  are  self  explanatory,  but  some  of  them might need some further
       explanations:

       WARNING: recursion limit reached in file filename
              When recursively parsing include files, makedepf90 has  reached  the  recursion  limit.   Possible
              reasons  are:  either  you  have  some  really  complicated  systems of include files, or you have
              recursive includes (e.g an include file that includes itself).  In the latter case; fix  it,  your
              Fortran compiler will not like it either.

BUGS AND LIMITATIONS

       Makedepf90's  support for pre processor conditionals and macro expension (#if:s, #define:s etc) is rather
       weak, but should work well enough for most cases.

       The include file search algorithm is broken.  I may fix it some day.

COPYING

       This program is free software; you can redistribute it and/or modify  it  under  the  terms  of  the  GNU
       General Public License version 2 as published by the Free Software Foundation.

       This  program  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 this program; if not, write
       to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

AUTHOR

       Erik Edelmann <Erik.Edelmann@iki.fi>

                                         Tue, 17 Nov 2015 23:21:02 -0500                           makedepf90(1)