Makefile Mix for C and C++ Post: 302703905

Sponsored Content

Top Forums Shell Programming and Scripting Makefile Mix for C and C++ Post 302703905 by hfbrando on Thursday 20th of September 2012 02:05:24 PM

09-20-2012

Registered User

Thank you DGPickett for your answer.
I've been looking for the use of extern in ANSI C, and I tried several ways to code it:

Code:

extern "C++" {
      #include <opencv2/features2d/features2d.hpp>
}

But it didn't work (the compiler threw errors because of the quotation marks or the braces... I changed them by parenthesis and simple quotation marks, but It didn't work. After I found a post (*) that say that C does not define linkage to any other language (but C++ does).
So I tried with extern "C" in the c++ library, but when I compiled it threw the same compilation error...

ardrone_testing_tool.c: (.text+0x1212) : undefined reference to `cvSURFParams'
ardrone_testing_tool.c: (.text+0x126f) : undefined reference to `cvExtractSURF'

In that link, they say also that I could try with the compiler g++ (I should fix the errors I put in the last post).
What do you think about that?

Concerning the compiler, you mean to take out '.cpp' in INTERNAL_SOURCE_EXTENSIONS, and after put the .hpp file in a separated folder and call the g++ just for that folder and generate the .o ?
How can I put all the .o files all together ?

Is it OK what I'm saying? Sorry if I'm saying something that is wrong, I started just some days ago with the GNU makefile.

Thanks a lot.

(*) The forum does not allow to put links before 5 posts. Write on google "linking a C++ library to a C program" bytes

hfbrando

View Public Profile for hfbrando

Find all posts by hfbrando

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to grep mix of numbers and systemdate?

Hi Guys, i'm beginner in UNIX commands, need some help on this simple question: I need to make a shell script to move files to another directory, the criterias are : 1. the range of 4 last digit of the file name is 0100-0199 2. move all files that processed daily (let's say today is...

2. AIX

mix fc and tape devices

I have a problem with some partitions. In one of them I have this two fiber channel. lsdev -Cc adapter ent0 Available 03-08 10/100/1000 Base-TX PCI-X Adapter (14106902) fcs0 Available 04-08 FC Adapter fcs1 Available 05-08 FC Adapter ide0 Defined 07-08 ATA/IDE...

3. UNIX for Advanced & Expert Users

Makefile problem - How to run module load in a Makefile

Hi, I'm trying to run the module load command in a Makefile and i'm getting the following error: make: module: command not found Why is this? Is there any way to run this command in a Makefile? NOTE: command - module load msjava/sunjdk/1.5.0 works fine outside of the Makefile

4. Solaris

ZFS Pool Mix-up

Hi all I plan to install Solaris 10U6 on some SPARC server using ZFS as root pool, whereas I would like to keep the current setup done by VxVM: - 2 internal disks: c0t0d0 and c0t1d0 - bootable root-volume (mirrored, both disks) - 1 non-mirrored swap slice - 1 non-mirrored slices for Live...

5. Shell Programming and Scripting

How to mix the contents of 2 files into a new file?

Hello Everybody! My question is how can I mix for example file_a with file_b in the following method: After 2 lines of file_a put 2 lines from file_b to file_c. For example: file_a: 1 2 3 4 5 6 file_b: 11 22

6. Homework & Coursework Questions

Help with Simple Multi-Level Makefile (Extremely New at Makefile)

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Basically, the prompt is make a makefile with various sub makefiles in their respective subdirectories. All code...

7. Programming

makefile for mix of C and C++ modules

I am trying to come up with a makefile where the target is linked with object files produced by C and C++ sources. My setup is Ubuntu/gcc: $ uname -a Linux srvr1 2.6.24-24-server #1 SMP Fri Sep 18 17:24:10 UTC 2009 i686 GNU/Linux gcc version 4.2.4 $ cat main.cpp #include <iostream>...

8. AIX

Mix LDAP and LOCAL user on AIX

Hello, I'm currently trying to mix local and LDAP users on an AIX 7.1. I've triied many things. My LDAP Server in on a CentOS - OpenLDAP (which works fine with linux). I'm currently stuck on AIX at how to declare LDAP AND Local users. Here's what i did : /usr/sbin/mksecldap -c -h 'ldap03'...

LEARN ABOUT DEBIAN

qd-config

QD-CONFIGG(1)															     QD-CONFIGG(1)

NAME

       qd-config - determine flags for compilation and linking

SYNOPSIS

       qd-config [options]

DESCRIPTION

       To  link  a  Fortran-90 program with the C++ qd library, it is recommended to link with the C++ compiler used to generate the library.  The
       Fortran 90 interface (along with a C-style main function calling f_main) is found in the qdmod library.	The qd-config script can  be  used
       to determine which flags to pass to compile and link your programs.

OPTIONS

       --src  Switch between source and system location.

       --prefix
	      Output configured prefix value.

       --exec-prefix
	      Output configured exec_prefix value.

       --build-flags
	      Compiler options used during build.

       --build-libs
	      Linker options used during build.

       --configure-args
	      Configure arguments used for build.

       --cxx  C++ compiler.

       --cflags
	      C++ preprocessor and compiler options.

       --cxxflags
	      C++ compiler options.

       --libs-la
	      C++ linker options and libtool archive location.

       --libs C++ linker options.

       --fc   Fortran compiler.

       --fcflags
	      Fortran compiler options.

       --fclibs
	      Fortran linker options.

       --fmainlib
	      C++ linker options for main program written in Fortran.

       --version
	      Output version.

AUTHOR

       This manual page was written by Daniel Leidert <daniel.leidert@wgdd.de> for the Debian project (but may be used by others).

User Commands							    2008-05-11							     QD-CONFIGG(1)