Windows can use cpp in c code but in linux ?? I dont know how.

Windows can use cpp in c code but in linux ?? I dont know how.

[mojtaba mahdavi]

Hi all.

I am a windows programmer and want to migrate my codes to linux. 

My problem is as followes.

I want to use cpp (File1.cpp) codes in c (File2.c) codes. 

in windows I have done following and it is ok. 

1- I wrote a cpp code (Wrap.cpp) that wraps my cpp code (File1.cpp) and 
compiled it using cpp compiler. 
( my strategy: for every method I wrote a c function that calls the methode. 
each function gets a void * to the class handle and ... ) 

2- I exported my wrapper functions as C interfaces using extern "C". (Wrap.h) 

3- in File2.c I used wrap.h and compiled it as a c code. every thing is fine. 

Now I have trouble with linux to do that (because I am a newbie in linux). 

at first, is it possible in linux ?? ( I think it must be possible ).

secondly, How do I it. 

actually I have done above in linux but I got some error message. 

My strateghy is as follows. 

1- complie file1.cpp and wrap.cpp using gcc and making file1.o and
wrap.o. it is ok.
2- making library using ar command. it is ok. (mylib.a) 
3- compile and link file2.c with mylib.a ..???????!!!!!!!! 
	this generates an error. 
		it says : 

./libmylib.a(wrap.o)(.text+0xc):wrap.cpp: undefined reference to `
___gxx_personality_sj0'
./libmylib.a(wrap.o)(.text+0x44):wrap.cpp: undefined reference to
`operator new(unsigned)'
./libmylib.a(wrap.o)(.text+0x85):wrap.cpp: undefined reference to
`operator delete(void*)'
./libmylib.a(wrap.o)(.text+0xeb):wrap.cpp: undefined reference to
`operator delete(void*)'
collect2: ld returned 1 exit status


NOW. 

what should I do ????

Re: Windows can use cpp in c code but in linux ?? I dont know how.

[Suciu Flavius]

Hi,

Your solution is a partial solution, because you "migration" require 
also the C++ library to be linked.

First, of course it's possible ;)

Second, under windoze you compiler it's smart (or dumb enought) to link 
automaticly with the c++ library.

Under Linux, gcc it's a pure c compiler, it never link agains c++ 
library, so "the misterious" messages refer to the missing c++ library 
because you code do references for operator new and delete ;)

To solve this is easy, link with the c++ library: -lstdc++

gcc a.c mylib.a -lstdc++

Third, welcom in the Linux world :)

Regards, and don't forget, under Linux EVERYTHING is possible :D






mojtaba mahdavi wrote:
> Hi all.
> 
> I am a windows programmer and want to migrate my codes to linux. 
> 
> My problem is as followes.
> 
> I want to use cpp (File1.cpp) codes in c (File2.c) codes. 
> 
> in windows I have done following and it is ok. 
> 
> 1- I wrote a cpp code (Wrap.cpp) that wraps my cpp code (File1.cpp) and 
> compiled it using cpp compiler. 
> ( my strategy: for every method I wrote a c function that calls the methode. 
> each function gets a void * to the class handle and ... ) 
> 
> 2- I exported my wrapper functions as C interfaces using extern "C". (Wrap.h) 
> 
> 3- in File2.c I used wrap.h and compiled it as a c code. every thing is fine. 
> 
> Now I have trouble with linux to do that (because I am a newbie in linux). 
> 
> at first, is it possible in linux ?? ( I think it must be possible ).
> 
> secondly, How do I it. 
> 
> actually I have done above in linux but I got some error message. 
> 
> My strateghy is as follows. 
> 
> 1- complie file1.cpp and wrap.cpp using gcc and making file1.o and
> wrap.o. it is ok.
> 2- making library using ar command. it is ok. (mylib.a) 
> 3- compile and link file2.c with mylib.a ..???????!!!!!!!! 
> 	this generates an error. 
> 		it says : 
> 
> ./libmylib.a(wrap.o)(.text+0xc):wrap.cpp: undefined reference to `
> ___gxx_personality_sj0'
> ./libmylib.a(wrap.o)(.text+0x44):wrap.cpp: undefined reference to
> `operator new(unsigned)'
> ./libmylib.a(wrap.o)(.text+0x85):wrap.cpp: undefined reference to
> `operator delete(void*)'
> ./libmylib.a(wrap.o)(.text+0xeb):wrap.cpp: undefined reference to
> `operator delete(void*)'
> collect2: ld returned 1 exit status
> 
> 
> NOW. 
> 
> what should I do ????
> -
> To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: Windows can use cpp in c code but in linux ?? I dont know how.

[mojtaba mahdavi]

Hi.

Thanks for your reply. 
you told me to use following command.

>gcc a.c mylib.a -lstdc++

Now. who is the compiler. C or C++  ?
If C ? I got what I wanted. 
If C++ ? I do not want it to compile my code. Since I want to use C as
my compiler not C++.

Sincerely all. 

mahdavi.

On Thu, 30 Sep 2004 18:49:53 -0700, Suciu Flavius
<suciuflavius@tiscali.de> wrote:
> Hi,
> 
> Your solution is a partial solution, because you "migration" require
> also the C++ library to be linked.
> 
> First, of course it's possible ;)
> 
> Second, under windoze you compiler it's smart (or dumb enought) to link
> automaticly with the c++ library.
> 
> Under Linux, gcc it's a pure c compiler, it never link agains c++
> library, so "the misterious" messages refer to the missing c++ library
> because you code do references for operator new and delete ;)
> 
> To solve this is easy, link with the c++ library: -lstdc++
> 
> gcc a.c mylib.a -lstdc++
> 
> Third, welcom in the Linux world :)
> 
> Regards, and don't forget, under Linux EVERYTHING is possible :D
> 
> 
> 
> 
> mojtaba mahdavi wrote:
> > Hi all.
> >
> > I am a windows programmer and want to migrate my codes to linux.
> >
> > My problem is as followes.
> >
> > I want to use cpp (File1.cpp) codes in c (File2.c) codes.
> >
> > in windows I have done following and it is ok.
> >
> > 1- I wrote a cpp code (Wrap.cpp) that wraps my cpp code (File1.cpp) and
> > compiled it using cpp compiler.
> > ( my strategy: for every method I wrote a c function that calls the methode.
> > each function gets a void * to the class handle and ... )
> >
> > 2- I exported my wrapper functions as C interfaces using extern "C". (Wrap.h)
> >
> > 3- in File2.c I used wrap.h and compiled it as a c code. every thing is fine.
> >
> > Now I have trouble with linux to do that (because I am a newbie in linux).
> >
> > at first, is it possible in linux ?? ( I think it must be possible ).
> >
> > secondly, How do I it.
> >
> > actually I have done above in linux but I got some error message.
> >
> > My strateghy is as follows.
> >
> > 1- complie file1.cpp and wrap.cpp using gcc and making file1.o and
> > wrap.o. it is ok.
> > 2- making library using ar command. it is ok. (mylib.a)
> > 3- compile and link file2.c with mylib.a ..???????!!!!!!!!
> >       this generates an error.
> >               it says :
> >
> > ./libmylib.a(wrap.o)(.text+0xc):wrap.cpp: undefined reference to `
> > ___gxx_personality_sj0'
> > ./libmylib.a(wrap.o)(.text+0x44):wrap.cpp: undefined reference to
> > `operator new(unsigned)'
> > ./libmylib.a(wrap.o)(.text+0x85):wrap.cpp: undefined reference to
> > `operator delete(void*)'
> > ./libmylib.a(wrap.o)(.text+0xeb):wrap.cpp: undefined reference to
> > `operator delete(void*)'
> > collect2: ld returned 1 exit status
> >
> >
> > NOW.
> >
> > what should I do ????
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: Windows can use cpp in c code but in linux ?? I dont know how.

[mojtaba mahdavi]

Thanks to all 

My problem has been solved. 

yours sincerely. 

mahdavi. 



On Sat, 02 Oct 2004 08:37:56 -0700, Suciu Flavius
<suciuflavius@tiscali.de> wrote:
> GCC - GNU C Compiler
> G++ - GNU C++ Compiler
> 
> So, you are using now the pure C compiler but extra linking with the c++
> library.
> 
> Regards
> 
> 
> 
> 
> mojtaba mahdavi wrote:
> > Hi.
> >
> > Thanks for your reply.
> > you told me to use following command.
> >
> >
> >>gcc a.c mylib.a -lstdc++
> >
> >
> > Now. who is the compiler. C or C++  ?
> > If C ? I got what I wanted.
> > If C++ ? I do not want it to compile my code. Since I want to use C as
> > my compiler not C++.
> >
> > Sincerely all.
> >
> > mahdavi.
> >
> > On Thu, 30 Sep 2004 18:49:53 -0700, Suciu Flavius
> > <suciuflavius@tiscali.de> wrote:
> >
> >>Hi,
> >>
> >>Your solution is a partial solution, because you "migration" require
> >>also the C++ library to be linked.
> >>
> >>First, of course it's possible ;)
> >>
> >>Second, under windoze you compiler it's smart (or dumb enought) to link
> >>automaticly with the c++ library.
> >>
> >>Under Linux, gcc it's a pure c compiler, it never link agains c++
> >>library, so "the misterious" messages refer to the missing c++ library
> >>because you code do references for operator new and delete ;)
> >>
> >>To solve this is easy, link with the c++ library: -lstdc++
> >>
> >>gcc a.c mylib.a -lstdc++
> >>
> >>Third, welcom in the Linux world :)
> >>
> >>Regards, and don't forget, under Linux EVERYTHING is possible :D
> >>
> >>
> >>
> >>
> >>mojtaba mahdavi wrote:
> >>
> >>>Hi all.
> >>>
> >>>I am a windows programmer and want to migrate my codes to linux.
> >>>
> >>>My problem is as followes.
> >>>
> >>>I want to use cpp (File1.cpp) codes in c (File2.c) codes.
> >>>
> >>>in windows I have done following and it is ok.
> >>>
> >>>1- I wrote a cpp code (Wrap.cpp) that wraps my cpp code (File1.cpp) and
> >>>compiled it using cpp compiler.
> >>>( my strategy: for every method I wrote a c function that calls the methode.
> >>>each function gets a void * to the class handle and ... )
> >>>
> >>>2- I exported my wrapper functions as C interfaces using extern "C". (Wrap.h)
> >>>
> >>>3- in File2.c I used wrap.h and compiled it as a c code. every thing is fine.
> >>>
> >>>Now I have trouble with linux to do that (because I am a newbie in linux).
> >>>
> >>>at first, is it possible in linux ?? ( I think it must be possible ).
> >>>
> >>>secondly, How do I it.
> >>>
> >>>actually I have done above in linux but I got some error message.
> >>>
> >>>My strateghy is as follows.
> >>>
> >>>1- complie file1.cpp and wrap.cpp using gcc and making file1.o and
> >>>wrap.o. it is ok.
> >>>2- making library using ar command. it is ok. (mylib.a)
> >>>3- compile and link file2.c with mylib.a ..???????!!!!!!!!
> >>>      this generates an error.
> >>>              it says :
> >>>
> >>>./libmylib.a(wrap.o)(.text+0xc):wrap.cpp: undefined reference to `
> >>>___gxx_personality_sj0'
> >>>./libmylib.a(wrap.o)(.text+0x44):wrap.cpp: undefined reference to
> >>>`operator new(unsigned)'
> >>>./libmylib.a(wrap.o)(.text+0x85):wrap.cpp: undefined reference to
> >>>`operator delete(void*)'
> >>>./libmylib.a(wrap.o)(.text+0xeb):wrap.cpp: undefined reference to
> >>>`operator delete(void*)'
> >>>collect2: ld returned 1 exit status
> >>>
> >>>
> >>>NOW.
> >>>
> >>>what should I do ????
> >>>-
> >>>To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> >>>the body of a message to majordomo@vger.kernel.org
> >>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >>>
> >>
> >>-
> >>To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> >>the body of a message to majordomo@vger.kernel.org
> >>More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >>
> > 
> > -
> 
> 
> > To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: Windows can use cpp in c code but in linux ?? I dont know how.

[Suciu Flavius]

GCC - GNU C Compiler
G++ - GNU C++ Compiler

So, you are using now the pure C compiler but extra linking with the c++ 
library.

Regards


mojtaba mahdavi wrote:
> Hi.
> 
> Thanks for your reply. 
> you told me to use following command.
> 
> 
>>gcc a.c mylib.a -lstdc++
> 
> 
> Now. who is the compiler. C or C++  ?
> If C ? I got what I wanted. 
> If C++ ? I do not want it to compile my code. Since I want to use C as
> my compiler not C++.
> 
> Sincerely all. 
> 
> mahdavi.
> 
> On Thu, 30 Sep 2004 18:49:53 -0700, Suciu Flavius
> <suciuflavius@tiscali.de> wrote:
> 
>>Hi,
>>
>>Your solution is a partial solution, because you "migration" require
>>also the C++ library to be linked.
>>
>>First, of course it's possible ;)
>>
>>Second, under windoze you compiler it's smart (or dumb enought) to link
>>automaticly with the c++ library.
>>
>>Under Linux, gcc it's a pure c compiler, it never link agains c++
>>library, so "the misterious" messages refer to the missing c++ library
>>because you code do references for operator new and delete ;)
>>
>>To solve this is easy, link with the c++ library: -lstdc++
>>
>>gcc a.c mylib.a -lstdc++
>>
>>Third, welcom in the Linux world :)
>>
>>Regards, and don't forget, under Linux EVERYTHING is possible :D
>>
>>
>>
>>
>>mojtaba mahdavi wrote:
>>
>>>Hi all.
>>>
>>>I am a windows programmer and want to migrate my codes to linux.
>>>
>>>My problem is as followes.
>>>
>>>I want to use cpp (File1.cpp) codes in c (File2.c) codes.
>>>
>>>in windows I have done following and it is ok.
>>>
>>>1- I wrote a cpp code (Wrap.cpp) that wraps my cpp code (File1.cpp) and
>>>compiled it using cpp compiler.
>>>( my strategy: for every method I wrote a c function that calls the methode.
>>>each function gets a void * to the class handle and ... )
>>>
>>>2- I exported my wrapper functions as C interfaces using extern "C". (Wrap.h)
>>>
>>>3- in File2.c I used wrap.h and compiled it as a c code. every thing is fine.
>>>
>>>Now I have trouble with linux to do that (because I am a newbie in linux).
>>>
>>>at first, is it possible in linux ?? ( I think it must be possible ).
>>>
>>>secondly, How do I it.
>>>
>>>actually I have done above in linux but I got some error message.
>>>
>>>My strateghy is as follows.
>>>
>>>1- complie file1.cpp and wrap.cpp using gcc and making file1.o and
>>>wrap.o. it is ok.
>>>2- making library using ar command. it is ok. (mylib.a)
>>>3- compile and link file2.c with mylib.a ..???????!!!!!!!!
>>>      this generates an error.
>>>              it says :
>>>
>>>./libmylib.a(wrap.o)(.text+0xc):wrap.cpp: undefined reference to `
>>>___gxx_personality_sj0'
>>>./libmylib.a(wrap.o)(.text+0x44):wrap.cpp: undefined reference to
>>>`operator new(unsigned)'
>>>./libmylib.a(wrap.o)(.text+0x85):wrap.cpp: undefined reference to
>>>`operator delete(void*)'
>>>./libmylib.a(wrap.o)(.text+0xeb):wrap.cpp: undefined reference to
>>>`operator delete(void*)'
>>>collect2: ld returned 1 exit status
>>>
>>>
>>>NOW.
>>>
>>>what should I do ????
>>>-
>>>To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
>>>the body of a message to majordomo@vger.kernel.org
>>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>
>>
>>-
>>To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
>>the body of a message to majordomo@vger.kernel.org
>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>