X-Spam-Check-By: sourceware.org To: cygwin@cygwin.com From: Lewis Hyatt Subject: Re: Help with strange compiler error linking to GSL Date: Thu, 05 Jul 2007 16:31:25 -0400 Lines: 35 Message-ID: References: <002f01c7bf41$22b44f10$0701a8c0@lee8075b> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Thunderbird 1.5.0.12 (Windows/20070509) In-Reply-To: <002f01c7bf41$22b44f10$0701a8c0@lee8075b> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Lee Rhodes wrote: > Brian, > Thanks. Here is the output from Eclipse: > > > make -k all > Building file: ../main.cpp > Invoking: GCC C++ Compiler > g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" > -o"main.o" "../main.cpp" > Finished building: ../main.cpp > > Building target: TestGSL.exe > Invoking: GCC C++ Linker > g++ -o"TestGSL.exe" ./main.o > ./main.o: In function `main': > /cygdrive/f/CPP/TestGSL/Debug/../main.cpp:7: undefined reference to > `_gsl_sf_bessel_J0' > collect2: ld returned 1 exit status > make: *** [TestGSL.exe] Error 1 > make: Target `all' not remade because of errors. > Build complete for project TestGSL > > Lee. > > > I don't know anything about Eclipse, but clearly you are not telling it to link to the gsl library anywhere, since the command it is running doesn't include -lgsl. You need to find the equivalent of the "LDFLAGS" Makefile variable. -Lewis -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/