From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suciu Flavius Subject: Re: Windows can use cpp in c code but in linux ?? I dont know how. Date: Sat, 02 Oct 2004 08:37:56 -0700 Sender: linux-c-programming-owner@vger.kernel.org Message-ID: References: <36a2bb3d04093003501d1b58a7@mail.gmail.com> <36a2bb3d0410012247107a25a@mail.gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <36a2bb3d0410012247107a25a@mail.gmail.com> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-c-programming@vger.kernel.org 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 > 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 >