Using boost in program created by g++ Post: 302749169

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Top Forums Programming Using boost in program created by g++ Post 302749169 by DGPickett on Thursday 27th of December 2012 05:01:00 PM

12-27-2012

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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..

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LEARN ABOUT DEBIAN

caca-config

caca-config(1)						      General Commands Manual						    caca-config(1)

NAME

       caca-config - script to get information about the installed version of libcaca

SYNOPSIS

       caca-config [ --prefix= DIR] [ --exec-prefix= DIR] [ --version ] [ --libs ] [ --cflags ]

DESCRIPTION

       caca-config  is	a  tool  that  is  used  to  configure and determine the compiler and linker flags that should be used to compile and link
       progams, libraries, and plugins that use libcaca.

       The use of caca-config is deprecated. The more generic tool pkg-config should be used instead.

OPTIONS

       --cflags
	      Print the compiler flags that are necessary to compile a program or library that uses libcaca.

       --exec-prefix=DIR
	      If specified, use DIR instead of the installation exec prefix that libcaca was build with when computing the output for the --cflags
	      and --libs options.  This option must be specified before any of the --cflags and --libs options.

       --libs Print the linker flags that are necessary to link a program or library that uses libcaca.

       --prefix=DIR
	      If  specified,  use PREFIX instead of the installation prefix that libcaca was built with when computing the output for the --cflags
	      and --libs options.  This option is also used for the exec prefix if --exec-prefix was not specified.  This option must be specified
	      before any of the --cflags and --libs options.

       --version
	      Prints the currently installed version of libcaca on standard output.

EXAMPLES

       gcc -o main.o $(caca-config --cflags) -c main.c
	      is how you might use caca-config to compile a C source file for an executable program.

       gcc -o my_app $(caca-config --libs) main.o util.o
	      is how you might use caca-config to link compiled objects into an executable program.

SEE ALSO

       pkg-config(1)

AUTHOR

       The libcaca library was written by Sam Hocevar <sam@hocevar.net>.

       This manual page was written for sdl-config by Branden Robinson, originally for Progeny Linux Systems, Inc., and the Debian Project. It was
       adapted to libcaca by Sam Hocevar.

libcaca 							    2003-11-22							    caca-config(1)