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# 1  
Old 12-27-2012
Using boost in program created by g++
I am trying to use the split provided by boost.

I have a string and want to split on "/".

Code:
string  value = "trig/4";

Have no idea how to compile and link it. I have extracted boost in

Code:
/chrisd/tomso-12.04/source/library/boost_1_52_0

In my program /raytrac.cc I have put

Code:
#include <../../library/boost_1_52_0/boost/algorithm/string.hpp>

Code:
C++ = g++
OPT = -traditional -Wno-non-template-friend -Wno-deprecated -O3 -DNDEBUG
IDIR = -Ilibrary

dir_raytrac = ./programs/raytrac
raytrac : $(dir_raytrac)/raytrac.cc $(dir_raytrac)/raytrac_doc.hh library
    $(C++) $(OPT) $(IDIR) -lboost_regex $(dir_raytrac)/raytrac.cc -o raytrac
    -mv raytrac ../bin

dirlib = ./library
library : $(dirlib)/common.hh    \
    $(dirlib)/clorfncs.hh    \
    $(dirlib)/vect2.hh       \
    $(dirlib)/vector.hh      \
    $(dirlib)/matrix.hh      \
    $(dirlib)/dynbaseobj.hh  \
    $(dirlib)/list.hh        \
    $(dirlib)/stack.hh       \
    $(dirlib)/tree.hh        \
    $(dirlib)/string.hh      \
    $(dirlib)/layer.hh       \
    $(dirlib)/linlay.hh      \
    $(dirlib)/velmod.hh

Last edited by kristinu; 12-27-2012 at 02:27 PM..
# 2  
Old 12-27-2012
Not sure it justifies the overhead of regex, maybe just find and split: Design Topics - 1.52.0 if not strchr() or http://www.cplusplus.com/reference/string/string/at/ !

Compiling and linking are just having the include dirs in -I's, a good dynamic search path or static lib dirs in -L's, libraries -lxxx and source or object files in the right order, and away you go. What happens when you compile?
# 3  
Old 12-27-2012
My makefile is in directory source. Running tree gives me.
My program resides in source/programs/raytrac

I really have no clue what I should do. Quite stuck.

Code:
cd source

tree  -d -L 3
.
├── fortran
│   ├── bin
│   │   ├── modBin
│   │   └── objBin
│   └── fmod
├── include
├── library
│   └── boost_1_52_0
│       ├── boost
│       ├── doc
│       ├── libs
│       ├── more
│       ├── status
│       └── tools
├── others
├── programs
│   ├── getmisfit
│   ├── getpdf
│   ├── getvel
│   ├── raytrac
│   ├── rdt
│   ├── surface
│   ├── tdarwin
│   ├── tracemisfit
│   ├── tracepdf
│   ├── tracepdf2d
│   └── tsimplex
└── scripts
    ├── awk
    ├── bash
    ├── html
    │   └── search
    ├── ksh
    │   └── TAG201011
    ├── latex
    ├── perl
    ├── python
    └── tcsh

I have done like this

Code:
g++ -traditional -Wno-non-template-friend -Wno-deprecated -O3 -DNDEBUG -Ilibrary ./programs/raytrac/raytrac.cc \
   -I./library/boost_1_52_0 -L./library/boost_1_52_0/libs -o raytrac

Ok , I seem to be getting something now

I am using

In the makefile I use

Code:
dir_raytrac = ./programs/raytrac
raytrac : $(dir_raytrac)/raytrac.cc $(dir_raytrac)/raytrac_doc.hh library
    $(C++) $(OPT) $(IDIR) $(dir_raytrac)/raytrac.cc \
    -I./library/boost_1_52_0 -L./library/boost_1_52_0/libs -o raytrac
    -mv raytrac ../bin

and in the program I use

Code:
  #include <boost/foreach.hpp>
  string hello ("Hello, world!");
  BOOST_FOREACH (char ch, hello) {
    cout << ch << endl;
  }
  cout << endl;

Last edited by kristinu; 12-27-2012 at 05:54 PM..
# 4  
Old 12-27-2012
Some prefer to do it in two lines, one for .cc.o and one for .o.exe or whatever, so the first also supports code going into libraries, and there is just one place for those options in make definitions.

I usually see the compiler options, -D's, -I's (preprocess is before compile, is before link), the -L right before the -l's it supports, -l's for each linked library and source or local object at the right end. I like to use dynamic linking, so no -L's, just a good LD_LIBRARY_PATH (or whatever your system likes to use, see man ld() for rules).

Sometimes I would -c compile all the .c or .cc into .o and ar them all into one library .a file, as order does not matter within a library, and finally compile with the .a file explicitly only. Only good for one main()! One best practice says put only one subroutine/function in each source file, and then the order is tricky. You can have one .a for each main() and it's "private" functions/methods/subroutines, and then link in any common code libraries.

The -I path must support the entry name or relative path in the source #include's (-I/a/b/c and #include "d/e.h" is for /a/b/c/d/e.h).
Last edited by DGPickett; 12-27-2012 at 06:07 PM..
# 5  
Old 12-27-2012
Can you give me some examples on how to do what you are saying?

---------- Post updated at 05:34 PM ---------- Previous update was at 05:28 PM ----------

I have done like this

Code:
C++ = g++
OPT = -traditional -Wno-non-template-friend -Wno-deprecated -O3 -DNDEBUG
IDIR = -Ilibrary
dir_raytrac = ./programs/raytrac
raytrac : $(dir_raytrac)/raytrac.cc $(dir_raytrac)/raytrac_doc.hh library
    $(C++) $(OPT) $(IDIR) $(dir_raytrac)/raytrac.cc \
    -I./library/boost_1_52_0 -L./library/boost_1_52_0/libs -o raytrac
    -mv raytrac ../bin

dirlib = ./library
library : $(dirlib)/common.hh    \
        $(dirlib)/clorfncs.hh    \
        $(dirlib)/vect2.hh       \
        $(dirlib)/vector.hh      \
        $(dirlib)/matrix.hh      \
        $(dirlib)/dynbaseobj.hh  \
        $(dirlib)/list.hh        \
        $(dirlib)/stack.hh       \
        $(dirlib)/tree.hh        \
        $(dirlib)/string.hh      \
        $(dirlib)/layer.hh       \
        $(dirlib)/linlay.hh     \
        $(dirlib)/velmod.hh

---------- Post updated at 05:57 PM ---------- Previous update was at 05:34 PM ----------

Ok , I think I got you.
# 6  
Old 01-01-2013
You haven't said what you want to do with the path processing. But you can use strchr() to get each directory or use strrchr() to get to the filename directly.

Regarding your build system, I think it's best to have a make file in each program directory, then have a single make file in the top level program directory that calls the others. You can do it like this:
Code:
SUBDIRS = getmisfit getpdf getvel raytrac rdt 

.PHONY: subdirs $(SUBDIRS)

subdirs: $(SUBDIRS)

$(SUBDIRS):
        $(MAKE) -C $@

See: GNU `make'

Also, GNU Make has a lot of built in rules. It already defines CC and CXX macros for the C and C++ compilers. Flags common to both compilers are set with CPPFLAGS and LDFLAGS for linker options.

As your set of programs probably all need common paths, you should set them in a separate make include file in the programs directory.

The raytrac make file will look something like:
Code:
include "../common.mk"

OBJS: raytrac

all: raytrac

clean:
        -rm raytrac *.o

raytrac: $(OBJS)
        $(LINK.cc) $^ -o $@
        cp $@ $(BIN)

Do that for each project.

common.mk has:
Code:
BIN = ../../bin/
CXXFLAGS += ../../library/boost_52_0/
LDFLAGS += -L ../../library/boost_52_0/libs -l <libname>

Clearly you don't need to specify Boost if you're not using it (by using the string routines instead).

LINKcc is GNU Make's C++ link rule. You can see all the rules by running:
Code:
make -p

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