Date: Mon, 27 Feb 2012 19:19:00 +0100 From: Artifex Maximus <artifexor@gmail.com> To: "Julian H. Stacey" <jhs@berklix.com> Cc: freebsd-questions@freebsd.org Subject: Re: clang vs gcc linking problem Message-ID: <CAPkuXvEZwcaG4_9ceTnsZiVR9o6yWruymG22b=Mqwiz5Qotzeg@mail.gmail.com> In-Reply-To: <201202260003.q1Q035OW083472@fire.js.berklix.net> References: <CAPkuXvFc7q03DYE1TJi8UP3EJiY8YxdpDPkhJZHkDEKwfw2MKg@mail.gmail.com> <201202260003.q1Q035OW083472@fire.js.berklix.net>
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On Sun, Feb 26, 2012 at 1:03 AM, Julian H. Stacey <jhs@berklix.com> wrote: > Artifex Maximus wrote: > > Hello! > > > > Absolutely not a flame war but would like to switch to clang in a > > project. Project uses ncurses. gcc works well but the executable fails > > when compiled other than -O0. Then I think I should change to clang > > which will becomes the default compiler in FreeBSD. With clang at > > linking time I got the following error: > > > > /usr/local/bin/ld: display/libsub_display.a(canvas.o): undefined > > reference to symbol 'keypad' > > /usr/local/bin/ld: note: 'keypad' is defined in DSO > > /usr/local/lib/libtinfow.so.6.0 so try adding it to the linker command > > line > > /usr/local/lib/libtinfow.so.6.0: could not read symbols: Invalid > operation > > clang: error: linker command failed with exit code 1 (use -v to see > invocation) > > *** Error code 1 > > > > With exactly the same flags gcc links successful. Any idea where is > > the problem and what is the solution? > > > > Thanks, > > There have been quite a number of discussions on Gcc & Clang > of various lists since efforts to transition started, > I don't see a specific list here, > http://lists.freebsd.org/mailman/listinfo > but this may interest > http://wiki.freebsd.org/BuildingFreeBSDWithClang > Thanks. I did not found any related information on link but finally found a solution. I have to add -ltinfo to LDFLAGS. I still do not know why gcc works without and why clang needs that. Bye, a
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