Hello David, thank you very much. Unfortunately, I get the following error message if I remove my download command:
-- downloading... src='http://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz' dst='/home/cdoucet/Downloads/eigen/download/3.2.4.tar.gz' timeout='none' -- [download 100% complete] CMake Error at src/eigen-stamp/download-eigen.cmake:27 (message): error: downloading 'http://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz' failed status_code: 1 status_string: "Unsupported protocol" log: Hostname was NOT found in DNS cache Trying 131.103.20.167... Connected to bitbucket.org (131.103.20.167) port 80 (#0) GET /eigen/eigen/get/3.2.4.tar.gz HTTP/1.1 User-Agent: curl/7.38.0 Host: bitbucket.org Accept: */* HTTP/1.1 301 Moved Permanently Server nginx/1.6.2 is not blacklisted Server: nginx/1.6.2 Date: Sat, 18 Apr 2015 10:55:20 GMT Content-Type: text/html Content-Length: 184 Location: https://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz Ignoring the response-body <html> <head><title>301 Moved Permanently</title></head> <body bgcolor="white"> <center><h1>301 Moved Permanently</h1></center> <hr><center>nginx/1.6.2</center> </body> </html> Connection #0 to host bitbucket.org left intact Issue another request to this URL: 'https://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz' Protocol "https" not supported or disabled in libcurl Closing connection -1 ----- Mail original ----- > De: "David Cole" <dlrd...@aol.com> > À: "Cedric Doucet" <cedric.dou...@inria.fr> > Cc: cmake@cmake.org > Envoyé: Vendredi 17 Avril 2015 13:21:08 > Objet: Re: [CMake] Don't download external projects again after calling "make > clean" > > Eliminate your DOWNLOAD_COMMAND. CMake knows how to do it with just > the URL_MD5, DOWNLOAD_DIR and SOURCE_DIR information.... > > HTH, > David > > > On Fri, Apr 17, 2015 at 1:32 AM, Cedric Doucet <cedric.dou...@inria.fr> > wrote: > > > > Hello David, > > > > thank you very much for your help. > > > > Unfortunately I may do something wrong because it does not work. > > After cleaning, the library is downloaded again. > > > > I guess my mistake comes from the fact I do not understand the role of > > URL_MD5. > > Below is a simple example where downloading and installing is very fast. > > You just have to replace the value of EXTERNAL_DIR by the path to your own > > "Downloads" repository. > > I tried to put URL in my DOWNLOAD_COMMAND but the call "wget <URL>" does > > not seem to be understood by the wget command. > > > > Thanks again! > > > > Cédric > > > > -------------------------------------------------------------------------- > > cmake_minimum_required (VERSION 2.6) > > > > project (example CXX) > > > > set(CMAKE_VERBOSE_MAKEFILE ON) > > > > include(ProcessorCount) > > ProcessorCount(N) > > if(NOT N EQUAL 0) > > set(CMAKE_BUILD_FLAGS -j${N}) > > endif() > > > > include(ExternalProject) > > set(EXTERNAL_DIR /home/cdoucet/Downloads) > > ExternalProject_Add(eigen > > PREFIX ${EXTERNAL_DIR}/eigen > > DOWNLOAD_DIR ${EXTERNAL_DIR}/eigen/download > > SOURCE_DIR ${EXTERNAL_DIR}/eigen/src > > BINARY_DIR ${EXTERNAL_DIR}/eigen/build > > INSTALL_DIR ${EXTERNAL_DIR}/eigen/install > > URL http://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz > > URL_MD5 ccb18a771f678b38a3d33c321a8e7daf > > DOWNLOAD_COMMAND wget > > http://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz && > > tar xvzf 3.2.4.tar.gz -C <SOURCE_DIR> > > --strip-components=1 > > CONFIGURE_COMMAND cd <BINARY_DIR> && cmake -D > > CMAKE_INSTALL_PREFIX=$<INSTALL_DIR> <SOURCE_DIR> > > ) > > ------------------------------------------------------------------------------ > > > > > > > > ----- Mail original ----- > >> De: "David Cole" <dlrd...@aol.com> > >> À: "Cedric Doucet" <cedric.dou...@inria.fr> > >> Cc: cmake@cmake.org > >> Envoyé: Lundi 13 Avril 2015 12:40:34 > >> Objet: Re: [CMake] Don't download external projects again after calling > >> "make clean" > >> > >> Use the URL_MD5 and DOWNLOAD_DIR arguments to ExternalProject_Add to > >> put the downloaded files into a location outside the build tree > >> (perhaps ~/Downloads on Mac/Linux or $ENV{USERPROFILE}/Downloads on > >> Windows). > >> > >> With DOWNLOAD_DIR outside the build tree, and the checksums of the > >> downloaded files being the same as you've specified via URL_MD5, the > >> download portion will be avoided once there is a local copy of a file > >> available. > >> > >> > >> HTH, > >> David C. > >> > >> > >> On Mon, Apr 13, 2015 at 5:04 AM, Cedric Doucet <cedric.dou...@inria.fr> > >> wrote: > >> > > >> > Hello! > >> > > >> > I use the ExternalProject_Add function to download third-party libraries > >> > of > >> > a code. > >> > > >> > Once a library has been downloaded, I can call "make" as many times as I > >> > want without downloading this library again. > >> > It seems that CMake detects that the library has already been > >> > downloaded. > >> > > >> > However, calling "make clean" seems to destroy this feature. > >> > Even if my library is not uninstalled during cleaning, calling "make" > >> > after > >> > "make clean" will lead CMake to try download the library again. > >> > > >> > How could I tell CMake not to download the library again? > >> > > >> > Thank you very much for your help! > >> > > >> > Cédric > >> > > >> > -- > >> > > >> > 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: > >> > http://public.kitware.com/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: http://public.kitware.com/mailman/listinfo/cmake