From mboxrd@z Thu Jan 1 00:00:00 1970 From: mojtaba mahdavi Subject: Re: Windows can use cpp in c code but in linux ?? I dont know how. Date: Sat, 2 Oct 2004 09:17:27 +0330 Sender: linux-c-programming-owner@vger.kernel.org Message-ID: <36a2bb3d0410012247107a25a@mail.gmail.com> References: <36a2bb3d04093003501d1b58a7@mail.gmail.com> Reply-To: mojtaba mahdavi Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: Content-Type: text/plain; charset="us-ascii" To: Suciu Flavius Cc: linux-c-programming@vger.kernel.org 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 >