[CMake] Don't download external projects again after calling "make clean"

David Cole DLRdave at aol.com
Thu Apr 23 07:14:35 EDT 2015


I don't understand what the error is here, but here are some comments:

(1)
CMAKE_INSTALL_PREFIX=$<INSTALL_DIR>

The $ is unnecessary and incorrect in this context. The literal string
<INSTALL_DIR> is the thing that ExternalProject will substitute when
it is processed into custom commands...

(2)
ONLY the DOWNLOAD_DIR parameter should be in an "external" (outside of
your build tree) directory, to avoid re-downloading the exact same
tar.gz file over and over again. The source tree and the build tree of
the project should be in your build tree somewhere.

(3)
CONFIGURE_COMMAND cd <BINARY_DIR> && cmake should be unnecessary...
The configure command is run in the binary dir by default. Instead,
you should be able to use:

CMAKE_ARGS -D CMAKE_INSTALL_PREFIX=<INSTALL_DIR>

The binary dir is the working directory for configure, build and
install commands. And the <SOURCE_DIR> is added automatically when you
use CMAKE_ARGS with the default cmake CONFIGURE_COMMAND rather than
specifying your own.


Make those changes and try again with one more fresh build (i.e. --
blow away the whole /home/cdoucet/Downloads/eigen directory and start
clean...)

Let us know if you still have an error after making those changes.


HTH,
David C.



On Thu, Apr 23, 2015 at 6:57 AM, Cedric Doucet <cedric.doucet at inria.fr> wrote:
> Hello David,
>
> I am using CMake 3.2.2.
> I installed CMake from the sources because I use "modules" to manage my
> libraries.
> But it's ok now: I modified the installation so that to support https.
>
> Unfortunately, I still have a problem. :(
> Maybe you could help me!
>
> Here is my CMakeLists.txt:
>
> =============
>
> 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 ${EXTERNAL_DIR}/eigen/install
>                                    URL
> http://bitbucket.org/eigen/eigen/get/3.2.4.tar.gz
>                                    URL_MD5 4d0d77e06fef87b4fcd2c9b72cc8dc55
>                                    CONFIGURE_COMMAND cd <BINARY_DIR> &&
> cmake -D CMAKE_INSTALL_PREFIX=$<INSTALL_DIR> <SOURCE_DIR>
> )
>
> =============
>
> And here is the error message:
>
> =====================
>
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake
> -H/home/cdoucet/Documents/exemples/cmake/external_project/eigen
> -B/home/cdoucet/Documents/exemples/cmake/external_project/eigen/build
> --check-build-system CMakeFiles/Makefile.cmake 0
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E cmake_progress_start
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build/CMakeFiles
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build/CMakeFiles/progress.marks
> make -f CMakeFiles/Makefile2 all
> make[1]: entrant dans le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> make -f CMakeFiles/eigen.dir/build.make CMakeFiles/eigen.dir/depend
> make[2]: entrant dans le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> cd /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build &&
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E cmake_depends "Unix
> Makefiles" /home/cdoucet/Documents/exemples/cmake/external_project/eigen
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build/CMakeFiles/eigen.dir/DependInfo.cmake
> --color=
> make[2]: quittant le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> make -f CMakeFiles/eigen.dir/build.make CMakeFiles/eigen.dir/build
> make[2]: entrant dans le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E cmake_progress_report
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build/CMakeFiles
> 3
> [ 12%] Creating directories for 'eigen'
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/src
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/build
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/install
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/tmp
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/src/eigen-stamp
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E make_directory
> /home/cdoucet/Downloads/eigen/download
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E touch
> /home/cdoucet/Downloads/eigen/src/eigen-stamp/eigen-mkdir
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E cmake_progress_report
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build/CMakeFiles
> 4
> [ 25%] Performing download step (download, verify and extract) for 'eigen'
> cd /home/cdoucet/Downloads/eigen &&
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -P
> /home/cdoucet/Downloads/eigen/src/eigen-stamp/download-eigen.cmake
> -- 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]
> -- [download 0% complete]
> -- [download 1% complete]
> -- [download 2% complete]
> -- [download 3% complete]
> -- [download 4% complete]
> -- [download 5% complete]
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> -- [download 99% complete]
> -- [download 100% complete]
> -- downloading... done
> cd /home/cdoucet/Downloads/eigen &&
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -P
> /home/cdoucet/Downloads/eigen/src/eigen-stamp/verify-eigen.cmake
> -- verifying file...
> file='/home/cdoucet/Downloads/eigen/download/3.2.4.tar.gz'
> -- verifying file... done
> cd /home/cdoucet/Downloads/eigen &&
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -P
> /home/cdoucet/Downloads/eigen/src/eigen-stamp/extract-eigen.cmake
> -- extracting...
> src='/home/cdoucet/Downloads/eigen/download/3.2.4.tar.gz'
> dst='/home/cdoucet/Downloads/eigen/src'
> -- extracting... [tar xfz]
> -- extracting... [analysis]
> -- extracting... [rename]
> -- extracting... [clean up]
> -- extracting... done
> cd /home/cdoucet/Downloads/eigen &&
> /usr/local/bibliotheques/cmake/3.2.2/bin/cmake -E touch
> /home/cdoucet/Downloads/eigen/src/eigen-stamp/eigen-download
> make[2]: *** [/home/cdoucet/Downloads/eigen/src/eigen-stamp/eigen-download]
> Erreur 1
> make[2]: quittant le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> make[1]: *** [CMakeFiles/eigen.dir/all] Erreur 2
> make[1]: quittant le répertoire «
> /home/cdoucet/Documents/exemples/cmake/external_project/eigen/build »
> make: *** [all] Erreur 2
>
> =====================
>
>
>
> ________________________________
>
> De: "David Cole" <DLRdave at aol.com>
> À: "Cedric Doucet" <cedric.doucet at inria.fr>
> Cc: cmake at cmake.org
> Envoyé: Samedi 18 Avril 2015 20:39:57
>
> Objet: Re: [CMake] Don't download external projects again after calling
> "make clean"
>
> What version of CMake are you using? All the modern pre-built CMake
> installations should support https without extra effort on your part. Are
> you using a pre-built version from somewhere or are you building CMake
> yourself?
>
>
> On Saturday, April 18, 2015, Cedric Doucet <cedric.doucet at inria.fr> wrote:
>>
>>
>> Ok it seems the answer to my problem is here:
>> http://www.cmake.org/pipermail/cmake/2010-December/041295.html
>> I will try it.
>>
>> ----- Mail original -----
>> > De: "Cedric Doucet" <cedric.doucet at inria.fr>
>> > À: cmake at cmake.org
>> > Envoyé: Samedi 18 Avril 2015 13:38:31
>> > Objet: Re: [CMake] Don't download external projects again after calling
>> > "make clean"
>> >
>> >
>> > I have just tried to install curl to get https support.
>> > To do that, I have followed the steps below:
>> >
>> > 1. Installation of openssl:
>> >   1.a. ./config --prefix=/my/openssl/path
>> >   1.b. make
>> >   1.c. make test
>> >   1.d. make install
>> > 2. Installation of curl
>> >   2.a. ./configure --prefix=/my/curl/path
>> > --with-ssl=/my/openssl/path/lib
>> >   2.b. make
>> >   2.c. make install
>> >
>> > I have also prepend PATH with /my/curl/path/bin.
>> > However, the error remains.
>> > It seems that my version of curl (7.41.0) is not taken into acount
>> > because I
>> > have still this line in the error message:
>> > User-Agent: curl/7.38.0
>> > I tried to remove all previous of curl and libcurl but it does not
>> > change
>> > anything.
>> >
>> > Could you help me?
>> >
>> > Cédric
>> >
>> >
>> > ----- Mail original -----
>> > > De: "Cedric Doucet" <cedric.doucet at inria.fr>
>> > > À: "David Cole" <DLRdave at aol.com>
>> > > Cc: cmake at cmake.org
>> > > Envoyé: Samedi 18 Avril 2015 13:00:28
>> > > Objet: Re: [CMake] Don't download external projects again after
>> > > calling
>> > > "make clean"
>> > >
>> > >
>> > > 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" <DLRdave at aol.com>
>> > > > À: "Cedric Doucet" <cedric.doucet at inria.fr>
>> > > > Cc: cmake at 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.doucet at 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" <DLRdave at aol.com>
>> > > > >> À: "Cedric Doucet" <cedric.doucet at inria.fr>
>> > > > >> Cc: cmake at 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.doucet at 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
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>> > >
>> > --
>> >
>> > 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
>
>
>
> --
>
> 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


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