[petsc-users] Placing FindPETSc.cmake

[Matthew Knepley]

On Fri, May 11, 2018 at 5:06 PM, Evan Um <evanum at gmail.com> wrote:

> Hi Jed,
>
> Thanks for the comment. I added the module but still saw errors (before I
> arrived here, I had to do cp - r /home/evan/petsc//lib/petsc/
> conf/rules /home/evan/petsc//lib/petsc/conf/petscrules).
>

That is wrong. It means PETSC_ARCH is (null) instead of the correct string.

   Matt


> They are supposed to be defined by FindPETSc.cmake. How could I solve
> these errors?
>
> Could you also explain a little bit about how to use pkg-config to find
> PETSc? Thanks!
>
> Evan
>
> ----------------
> cmake_minimum_required(VERSION 3.10)
>
> project(hellopetsc)
> list (APPEND CMAKE_MODULE_PATH /home/evan/CLionProjects/hellopetsc)
>
> SET(CMAKE_CXX_STANDARD 11)
> SET(CMAKE_C_COMPILER mpicc)
> SET(CMAKE_CXX_COMPILER mpicxx)
>
> find_package(PETSc COMPONENTS CXX)
>
> add_executable(hellopetsc main.cpp)
> -----------------
>
> -----------------
> /home/evan/opt/clion-2018.1.2/bin/cmake/bin/cmake
> -DCMAKE_BUILD_TYPE=Debug -G "CodeBlocks - Unix Makefiles"
> /home/evan/CLionProjects/hellopetsc
> -- PETSc could not be found.  Be sure to set PETSC_DIR and PETSC_ARCH.
> (missing: PETSC_INCLUDES PETSC_LIBRARIES PETSC_EXECUTABLE_RUNS) (found
> version "3.9.1")
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /home/evan/CLionProjects/hello
> petsc/cmake-build-debug
>
> [Finished]
> -----------------
>
>
> On Fri, May 11, 2018 at 12:08 PM, Jed Brown <jed at jedbrown.org> wrote:
>
>> Yes, it depends on this module from the same repository.
>>
>> Note that you can use pkg-config to find PETSc these days.
>>
>> Evan Um <evanum at gmail.com> writes:
>>
>> > Hi Stefano,
>> >
>> > Thanks for your comment. Now, cmake was able to locate FindPETSc.cmake
>> file
>> > in my project directory, but I see a new error.
>> >
>> > Evan
>> >
>> >
>> > Messages
>> > ----------------------------------------------
>> > /home/evan/opt/clion-2018.1.2/bin/cmake/bin/cmake
>> -DCMAKE_BUILD_TYPE=Debug
>> > -G "CodeBlocks - Unix Makefiles" /home/evan/CLionProjects/hellopetsc
>> > CMake Error at FindPETSc.cmake:123 (include):
>> >   include could not find load file:
>> >
>> >     FindPackageMultipass
>> > Call Stack (most recent call first):
>> >   CMakeLists.txt:10 (find_package)
>> >
>> >
>> > CMake Error at FindPETSc.cmake:124 (find_package_multipass):
>> >   Unknown CMake command "find_package_multipass".
>> > Call Stack (most recent call first):
>> >   CMakeLists.txt:10 (find_package)
>> >
>> >
>> > -- Configuring incomplete, errors occurred!
>> > See also
>> > "/home/evan/CLionProjects/hellopetsc/cmake-build-debug/CMake
>> Files/CMakeOutput.log".
>> > See also
>> > "/home/evan/CLionProjects/hellopetsc/cmake-build-debug/CMake
>> Files/CMakeError.log".
>> > ----------------------------------------------
>> >
>> > CMakeLists.txt
>> > ----------------------------------------------
>> > /home/evan/opt/clion-2018.1.2/bin/cmake/bin/cmake
>> -DCMAKE_BUILD_TYPE=Debug
>> > -G "CodeBlocks - Unix Makefiles" /home/evan/CLionProjects/hellopetsc
>> > CMake Error at FindPETSc.cmake:123 (include):
>> >   include could not find load file:
>> >
>> >     FindPackageMultipass
>> > Call Stack (most recent call first):
>> >   CMakeLists.txt:10 (find_package)
>> >
>> >
>> > CMake Error at FindPETSc.cmake:124 (find_package_multipass):
>> >   Unknown CMake command "find_package_multipass".
>> > Call Stack (most recent call first):
>> >   CMakeLists.txt:10 (find_package)
>> >
>> >
>> > -- Configuring incomplete, errors occurred!
>> > See also
>> > "/home/evan/CLionProjects/hellopetsc/cmake-build-debug/CMake
>> Files/CMakeOutput.log".
>> > See also
>> > "/home/evan/CLionProjects/hellopetsc/cmake-build-debug/CMake
>> Files/CMakeError.log".
>> >
>> > [Finished]
>> >
>> >
>> >
>> > On Fri, May 11, 2018 at 11:34 AM, Stefano Zampini <
>> stefano.zampini at gmail.com
>> >> wrote:
>> >
>> >> CMAKE is case sensitive on this. You should use find_package(PETSc ….)
>> >>
>> >>
>> >> > On May 11, 2018, at 9:28 PM, Evan Um <evanum at gmail.com> wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > I would like to ask a question about FindPETSc.cmake. I place the
>> cmake
>> >> file in the same directory where main.cpp is placed. I also placed the
>> file
>> >> in /usr/share/cmake_xx/Modules.
>> >>
>> >> Actually, it can be put in any directory pointed by the variable
>> >> CMAKE_MODULE_PATH. If I were you, I would not modify /usr/share/
>> >>
>> >> > Where should i put the file? What else should I do to use the file in
>> >> cmake? Do I need any other lines in my cmakelists.txt except
>> >> find_package(petsc)? Thanks for your comments.
>> >> >
>> >> > Evan
>> >> >
>> >> > -------------------------------------------------------------
>> >> >
>> >> > cmake_minimum_required(VERSION 3.10)
>> >> >
>> >> > project(hellopetsc)
>> >> >
>> >> > SET(CMAKE_CXX_STANDARD 11)
>> >> > SET(CMAKE_C_COMPILER mpicc)
>> >> > SET(CMAKE_CXX_COMPILER mpicxx)
>> >> >
>> >> > find_package(PETSC COMPONENTS CXX)
>> >> >
>> >> > add_executable(hellopetsc main.cpp)
>> >> >
>> >> > ------------------------------------------------------------
>> >> > CMake Warning at CMakeLists.txt:9 (find_package):
>> >> >   By not providing "FindPETSC.cmake" in CMAKE_MODULE_PATH this
>> project
>> >> has
>> >> >   asked CMake to find a package configuration file provided by
>> "PETSC",
>> >> but
>> >> >   CMake did not find one.
>> >> >
>> >> >   Could not find a package configuration file provided by "PETSC"
>> with
>> >> any of
>> >> >   the following names:
>> >> >
>> >> >     PETSCConfig.cmake
>> >> >     petsc-config.cmake
>> >> >
>> >> >   Add the installation prefix of "PETSC" to CMAKE_PREFIX_PATH or set
>> >> >   "PETSC_DIR" to a directory containing one of the above files.  If
>> >> "PETSC"
>> >> >   provides a separate development package or SDK, be sure it has been
>> >> >   installed.
>> >>
>> >>
>>
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
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