Difference between revisions of "Makefile CCCP"

Revision as of 15:08, 16 July 2009

This section describes a Cross-Compiler, Cross-Platform (CCCP) makefile development methodology using the make tool from GNU, also known as gmake. The syntax to use would be:

make platform.action

(ex: make Win, make Unix.clean, etc...).

Description

A CCCP makefile project a bunch of library, modules and program folders within a single root folder.

Tree description

Regular folders

Every folder must contain the following files:

Files.mk

encapsulates a list of all the folder's source-files and meta-files.

Makefile

contains includes to all the actions that can be perfomed on the folder.

Dependencies.mk

encapsulates the dependencies of the files within the lists defined in Files.mk.

Special folders and special files

There are two special folders, mandatory, and each containing special files, beyond the mandatory regular files listed above:

1. the root folder

   Actions.mk

   is similar to Makefile, but defines PHONY targets that executes the different actions defined in the Makefiles special folder.

   Nix.mk

   contains all the necessary configuration global variables specific to the CCCP solution. Configured by the Solution administrator.

   Editme.mk

   Each user must edit this configuration file before building the solution.

2. the Makefiles folder (NOTE: it is extensible, one file per action or rule)

   All.mk

   contains the makefile rules to compile and build programs.

   Alllib.mk

   contains the makefile rules to compile and build libraries.

   Clean.mk

   contains the makefile rules to erase every .obj, .mod, .lib and .exe file that was created by the CCCP solution.

   Install.mk

   contains the makefile rule to install the programs.

Files description

Files.mk

Several variables are defined:

INCS

LIBS

SRCDIR

contains the path to the source files

FILES

contains the list of source files (using the $(S) suffix)

METAFILES

contains the list of files required by the Makefile to run in this project (using the .smk suffix)

TARGET

is the target name that the local makefile is supposed to build.

MODULES

contains the list of modules (special root folder only).

Makefile

Contains the rules to build the targets.

Dependencies.mk

Contains the dependencies of the source files OR, in the special folders cases, of the modules.

The project filetree

The project makefiles distribution

The root folder must contain:

• The Makefile (Makefile)
• One specific makefile per platform and per compiler (ex: win.mk, unix.mk, etc...)
• An auxiliary file included in the latter (aux.mk)

And each module must contain:

• The module standard Makefile (module/Makefile)
• The dependencies file included in the latter (module/Dependencies.mk)
• The local environment variables file included in the former (module/Vars.mk)

The makefile's global variables

The idea is to use global variables to pass arguments to the different modules makefiles. Thus, each specific platform makefile in the root folder defines these global variables. Then, it calls the modules makefiles who will use the global variables in their syntax. If a systematic approach of using global variables is implemented, then it is fairly easy to have a cross-platform makefile project implemented; and easily extended.

The Mohid Makefile Project

A sample project for Mohid2D (DEPRECATED)

Here we apply the methodology described above.

Makefile

SHELL = /bin/sh

export MAKE = make
PLATCLEAN = win.clean nix.clean
PLAT = $(PLATCLEAN:.clean=)

.PHONY: default $(PLATCLEAN) $(PLAT)

default:
	@echo Please choose your platform from:
	@echo $(PLAT).
	@echo Type "make win(.clean)" or "make nix(.clean)".

$(PLAT):
	$(MAKE) -f $@.mk all

$(PLATCLEAN) : 
	$(MAKE) -f $(@:.clean=).mk clean

win.mk

SHELL = /bin/sh

###### WIN Exported variables #########
export DEL = del /Q
export O = obj
export F = f90
export MOD = mod
export CC= ifort
export CCFLAGS  = -c -fpp -nologo # Debug: -g Profiling: -p
export LFLAGS   = -fpp -nologo # Profiling: -p
export AR = ar rc
export HDF5 = D:/Projectos/Mohid_v4/IntelLibs
export LIBS = \
       ../Library/Library.lib \
       ../Modulos/Modulos.lib \
       ../Boxdif_hidrodin/Boxdif_hidrodin.lib \
       ../Mohid_Base/Mohid_Base.lib \
       $(HDF5)/hdf5.lib \
       $(HDF5)/hdf5_hl.lib \
       $(HDF5)/hdf5c.lib \
       $(HDF5)/hdf5f90.lib \
       $(HDF5)/szlib.lib \
       $(HDF5)/zlib.lib
#### End of exported variables ####

include aux.mk

nix.mk

SHELL = /bin/sh

###### NIX Exported variables #########
export DEL = rm
export O = o
export F = f90
export MOD = mod
export CC= ifort
export CCFLAGS  = -c -fpp -nologo # Debug: -g Profiling: -p
export LFLAGS   = -fpp -nologo # Profiling: -p
export AR = ar rc
export HDF5 = /opt/hdf5/hdf5/lib
export LIBS = \
       ../Boxdif_hidrodin/Boxdif_hidrodin.lib \
       ../Mohid_Base/Mohid_Base.lib \
       ../Modulos/Modulos.lib \
       ../Library/Library.lib \
       $(HDF5)/libhdf5_fortran.a \
       $(HDF5)/libhdf5.a \
       $(HDF5)/libhdf5_hl.a
#### End of exported variables ####

include aux.mk

aux.mk

MODCLEAN = Modulos.clean Boxdif_hidrodin.clean Library.clean Mohid_Base.clean Mohid2D.clean
MODULES = $(MODCLEAN:.clean=.all)

.PHONY: all clean $(MODULES) $(MODCLEAN)

all: $(MODULES)

clean: $(MODCLEAN)

$(MODULES):
	$(MAKE) -C $(@:.all=) all

$(MODCLEAN):
	$(MAKE) -C $(@:.clean=) clean

#Modules dependencies
Mohid2D.all: Mohid_Base Library.all
Mohid_Base.all: Boxdif_hidrodin.all
Library.all: Modulos.all

ModuleA/Vars.mk

SHELL = /bin/sh 

INCS = -I../ -I$(HDF5)
SRCS = \
       ModuleGlobalData.$(F) \
       ModuleHDF5.$(F) \
       ModuleTime.$(F) \
       Module_EnterData.$(F) \
       ModuleOilSpill.$(F) \
       ModuleAppPART3D.$(F) \
       ModuleEuler.$(F) \
       ModuleOxygenSaturation.$(F)
TARGET = Modulos.lib

ModuleA/Makefile

include Vars.mk

OBJS = $(SRCS:.$(F)=.$(O)) 

.PHONY: all clean

all: $(TARGET)

$(TARGET) : $(OBJS)
	@$(AR) $@ $^
	@echo Finished building $@.

clean:
	@-$(DEL) *.$(O) *.$(MOD) $(TARGET)
	@echo Erased $(TARGET) files.
 
%.$(O) : %.$(F)
	@$(CC) $(CCFLAGS) $(INCS) $<
	@echo $* .............. [OK]

include Dependencies.mk

ModuleA/Dependencies.mk

#Dependencies
ModuleHDF5.$(O) : ModuleGlobalData.$(O)
Module_EnterData.$(O) : ModuleTime.$(O)
ModuleOilSpill.$(O) : Module_EnterData.$(O)
ModuleAppPART3D.$(O) : ModuleOilSpill.$(O)
ModuleEuler.$(O) : ../param.cmb

See also

• Makefile
• Mohid Makefile