No, setting a variable in cmake is done with the 'set(GSL_ROOT /path/to/gsl)' command.
You can alternatively set a similarly named environment variable when invoking cmake: GSL_ROOT="/path/to/gsl" cmake <path to source dir> On Wed, Sep 25, 2019, 05:15 Sachithra Weerasooriya <sachi...@gmail.com> wrote: > I did install it in a non standard path. Which is why was trying to > figure out how to link gsl. I couldn’t use homebrew since I don’t have root > permissions on the machine. Do you just edit the text file just before > calling find_package statement like this ? > GSL_ROOT_DIR=\path\to\gsl > > Thanks! > Best regards, > Sachi > > > > On Sep 24, 2019, at 3:08 PM, Avraham Shukron <avraham.shuk...@gmail.com> > wrote: > > The macro looks fine (assuming you actually call it somewhere). > And I also assume that the line that fails is the find_package(GSL > REQUIRED) > > I suspect that it fails because you installed GSL in a local directory > that is not in a location known to cmake (E.g not in /usr/local/lib or > something similar) > > Can you specify the path you installed GSL to? > > In order for CMake to find package in a non-standard location, you can set > the GSL_ROOT > <https://cmake.org/cmake/help/latest/variable/PackageName_ROOT.html#packagename-root> > cmake variable before calling find_package(GSL). > You should set it to wherever you installed the GSL library locally. > > On Tue, Sep 24, 2019 at 9:37 PM Sachithra Weerasooriya <sachi...@gmail.com> > wrote: > >> Hi Avraham! >> I installed GSL manually using in a local directory. OS version is macOS >> Mojave 10.14.5. Here's part of the file that looks for gsl: >> # >> # How we find GSL and set it up >> # >> macro(find_gsl) >> find_package(GSL REQUIRED) >> list(APPEND VR_INCLUDE_DIRS ${GSL_INCLUDE_DIRS}) >> list(APPEND VR_LIBS ${GSL_LIBRARIES}) >> endmacro() >> >> # >> >> Thank you! >> Best Regards, >> Sachi >> >> On Tue, Sep 24, 2019 at 1:08 PM Avraham Shukron < >> avraham.shuk...@gmail.com> wrote: >> >>> Hi Sachi! >>> >>> Could you paste a minimal CMakeLists.txt file that demonstrate the >>> problem, along with details about your OS version and how did you install >>> GSL? >>> >>> Thanks! >>> >>> On Tue, Sep 24, 2019 at 7:55 PM Raymond Wan <rwan.w...@gmail.com> wrote: >>> >>>> Hi Sachi and everyone, >>>> >>>> Sorry, I didn't realise her original message wasn't CC'ed to the list. >>>> Please keep replies to the list, Sachi, unless there's a good reason >>>> you shouldn't. It will also allow someone to jump in if I've said >>>> something incorrectly about your problem. >>>> >>>> Ray >>>> >>>> >>>> ---------- Forwarded message --------- >>>> From: Raymond Wan <rwan.w...@gmail.com> >>>> Date: Wed, Sep 25, 2019 at 12:52 AM >>>> Subject: Re: [CMake] Linking GSL to cmake using command line >>>> To: Sachithra Weerasooriya <sachi...@gmail.com> >>>> >>>> >>>> Hi Sachi, >>>> >>>> Then, to be frank, it's not something that CMake's users can help you >>>> with. It's (most probably) how the developer is using CMake to look >>>> for GSL and you should be contacting him/her. Generally, the end user >>>> of program X shouldn't have to learn about CMake. (Of course, no one >>>> is stopping you from learning.) The developer should be trying to fix >>>> it, unless you happen to already be an expert on CMake. >>>> >>>> If the developer isn't very responsive to your query, then that's a >>>> separate issue, that's also not related to CMake... S/he might be >>>> happy to hear from you since it's a bug report and it can only make >>>> program X better...I think? >>>> >>>> Ray >>>> >>>> On Wed, Sep 25, 2019 at 12:38 AM Sachithra Weerasooriya >>>> <sachi...@gmail.com> wrote: >>>> > >>>> > Hi Ray! >>>> > Thank you for your prompt reply! I appreciate it. Actually I am >>>> trying to install a package that uses cmake. Although GSL is installed in >>>> my machine, cmake can’t find the GSL directory. >>>> > >>>> > Best regards, >>>> > Sachi >>>> > >>>> > >>>> > >>>> > Sent from my iPhone >>>> > >>>> > > On Sep 24, 2019, at 11:28 AM, Raymond Wan <rwan.w...@gmail.com> >>>> wrote: >>>> > > >>>> > > Hi Sachi, >>>> > > >>>> > > Unfortunately, the short answer is "no". I think you misunderstand >>>> > > what CMake is. One way to summarise it is that it allows developers >>>> > > of programs to describe/explain how to compile and link software. >>>> For >>>> > > example, suppose there is a program X and it uses the GSL library. >>>> A >>>> > > programmer might use CMake to explain how GSL can link with X on >>>> Mac, >>>> > > Linux, etc. -- across various platforms. This will make it easier >>>> for >>>> > > the end user. >>>> > > >>>> > > If you are an end user (i.e., you didn't make the program X), then >>>> you >>>> > > need CMake isn't for you. I'm afraid you might have to read the GSL >>>> > > documentation for Mac, instead. If you are the developer of X, then >>>> > > you might want to go through the various CMake tutorials and give >>>> it a >>>> > > try -- then, if you're still stuck, post what you got so far so that >>>> > > someone can help you. >>>> > > >>>> > > Based on what you've asked, my guess is that CMake isn't what you >>>> > > should be looking into. >>>> > > >>>> > > Ray >>>> > > >>>> > > On Wed, Sep 25, 2019 at 12:22 AM Sachithra Weerasooriya >>>> > > <sachi...@gmail.com> wrote: >>>> > >> >>>> > >> Hi CMake community! >>>> > >> I am having trouble linking GSL to cmake using command line. I am >>>> using a Mac. Can someone please help me? >>>> > >> >>>> > >> Thank you! >>>> > >> Best regards, >>>> > >> Sachi >>>> > >> >>>> > >> >>>> > >> -- >>>> > >> >>>> > >> Powered by www.kitware.com >>>> > >> >>>> > >> Please keep messages on-topic and check the CMake FAQ at: >>>> http://www.cmake.org/Wiki/CMake_FAQ >>>> > >> >>>> > >> Kitware offers various services to support the CMake community. >>>> For more information on each offering, please visit: >>>> > >> >>>> > >> CMake Support: http://cmake.org/cmake/help/support.html >>>> > >> CMake Consulting: http://cmake.org/cmake/help/consulting.html >>>> > >> CMake Training Courses: http://cmake.org/cmake/help/training.html >>>> > >> >>>> > >> Visit other Kitware open-source projects at >>>> http://www.kitware.com/opensource/opensource.html >>>> > >> >>>> > >> Follow this link to subscribe/unsubscribe: >>>> > >> https://cmake.org/mailman/listinfo/cmake >>>> -- >>>> >>>> Powered by www.kitware.com >>>> >>>> Please keep messages on-topic and check the CMake FAQ at: >>>> http://www.cmake.org/Wiki/CMake_FAQ >>>> >>>> Kitware offers various services to support the CMake community. For >>>> more information on each offering, please visit: >>>> >>>> CMake Support: http://cmake.org/cmake/help/support.html >>>> CMake Consulting: http://cmake.org/cmake/help/consulting.html >>>> CMake Training Courses: http://cmake.org/cmake/help/training.html >>>> >>>> Visit other Kitware open-source projects at >>>> http://www.kitware.com/opensource/opensource.html >>>> >>>> Follow this link to subscribe/unsubscribe: >>>> https://cmake.org/mailman/listinfo/cmake >>>> >>>
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