cmake in linux ubuntu

Leopold

Hello, i know this is a cmake problem but its encountered with QT.It runs within windows and now I want to compile it first time within linux mint.QT is 5.12.2 an Qt creator is 4.12.2
I know for shure that librosco.dll is in my source folder and have set it to read/write/execute for root group and user. Here is part of the cmalelist file.Everytime i get librosco not found.What do I have to change (write)
Thank you in advance.

else()
  message (STATUS "Defaulting to Linux build environment.")
  file ( WRITE  librosco )
 # file(WRITE "${LIBROSCO}/${CMAKE_STATIC_LIBRARY_PREFIX}librosco ${CMAKE_STATIC_LIBRARY_SUFFIX}" )
  find_library(LIBROSCO
      NAMES ${CMAKE_SHARED_LIBRARY_PREFIX}librosco ${CMAKE_SHARED_LIBRARY_SUFFIX}
  HINTS  "${CMAKE_SOURCE_DIR}"
  NO_DEFAULT_PATH
  NO_CMAKE_PATH
  NO_CMAKE_SYSTEM_PATH
  NO_Package_ROOT_PATH )

  # check if we found the library
#   message(STATUS "LIB_ROSCO: [${LIB_ROSCO}]")
 message(STATUS "path: ${LIBROSCO}")
  target_link_libraries (${PNAME} ${LIB_ROSCO} Qt5::Widgets)code_text

Leopold

sorry I don know why the unquote sign "'#" was not copied.
Line 3 12 and 13

Leopold

Hi,
this is my code now:

  message (STATUS "Defaulting to Linux build environment.")
  set(CMAKE_INCLUDE_CURRENT_DIR ON)

file(WRITE "${librosco} ${CMAKE_STATIC_LIBRARY_PREFIX}LIBROSCO ${CMAKE_STATIC_LIBRARY_SUFFIX}.dll" )
  find_file( "${librosco}"
    NAMES ${CMAKE_SHARED_LIBRARY_PREFIX}LIBROSCO ${CMAKE_SHARED_LIBRARY_SUFFIX}.dll
  HINTS "${CMAKE_SOURCE_DIR}/lib"
  NO_DEFAULT_PATH
  NO_CMAKE_PATH
  NO_CMAKE_SYSTEM_PATH
  NO_Package_ROOT_PATH )

  # check if we found the library
   message(STATUS "LIB_ROSCO: [${LIBROSCO}]")

  target_link_libraries (${PNAME} ${LIBROSCO} Qt5::Widgets)

cmake is running without failure but librosco is not found


Defaulting to Linux build environment.
LIB_ROSCO: []
Configuring done
Generating done
Das CMake-Projekt wurde erfolgreich ausgewertet.

what can i do next?

SGaist

Hi,

.dll files are only for Windows. Do you have a Linux build of that library ?

Leopold

Hi SGaist,
thank you, at first glance this was easy.Now I have a librosco.so, librosco.so.2 and librosco.so.2.0.0 in my source folder and /source/lib they are set to rwx/rwx/rw but files are not found.

VRonin

librosco is built and installed with cmake so it is super easy.
After you built librosco just call sudo make install then add the path where the library was installed to CMAKE_PREFIX_PATH if it's not a directory already in your PATH variable.
Now you can just use find_package(librosco)

Leopold

Hi Vronin,
I could install librosco but when I search for the package i get this answer
:```
Detecting CXX compiler ABI info - done
Detecting CXX compile features
Detecting CXX compile features - done
Defaulting to Linux build environment.
CMake Warning at CMakeLists.txt:229 (find_package):
By not providing "FindLIBROSCO.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "LIBROSCO",
but CMake did not find one.

Could not find a package configuration file provided by "LIBROSCO" with any
of the following names:

LIBROSCOConfig.cmake
librosco-config.cmake

Add the installation prefix of "LIBROSCO" to CMAKE_PREFIX_PATH or set
"LIBROSCO_DIR" to a directory containing one of the above files. If
"LIBROSCO" provides a separate development package or SDK, be sure it has
been installed.

when I search for the library i get this fault:

CMake Error at CMakeLists.txt:229 (find_library):
find_library called with incorrect number of arguments

the same when i write find_file.
When i read the man for  find_library or find_file  only one argument is needed , the rest is optional. Am I right?

VRonin

@Leopold said in cmake in linux ubuntu:

I could install librosco

In what folder?

I think you missed this part:

@VRonin said in cmake in linux ubuntu:

add the path where the library was installed to CMAKE_PREFIX_PATH if it's not a directory already in your PATH variable.

Leopold

Hi I did the sudo make install in the librosco build folder there it was the makefile
adding to LD_LIBRARY_PATH was activated.
I do not know where it is installed.

jsulm

@Leopold said in cmake in linux ubuntu:

I do not know where it is installed

You should see the path in the output of "make install"

Leopold

i found them in /usr/lib

Leopold

I exported /usr/lib to my path
no help

SGaist

Are you using CMAKE_PREFIX_PATH as @VRonin suggested ?

Leopold

Yes, i have it in the code

    message (STATUS "Defaulting to Linux build environment.")
    set(CMAKE_INCLUDE_CURRENT_DIR ON)
    set( CMAKE_PREFIX_PATH =/usr/lib)
  #  file(WRITE "${LIBROSCO} )#${CMAKE_STATIC_LIBRARY_PREFIX}librosco ${CMAKE_STATIC_LIBRARY_SUFFIX}so*" )
    find_library([${LIBROSCO}]
                 HINTS /usr/lib)


    # check if we found the library
     message(STATUS "LIB_ROSCO:${LIBROSCO}")
      message(PATH "LIB_ROSCO:${LIBROSCO}")

    target_link_libraries (${PNAME} ${LIBROSCO} Qt5::Widgets)

this didn help so I exported the command and have it there```
leopold@leopold-Mint:~$ export
declare -x CINNAMON_VERSION="4.4.8"
declare -x CMAKE_PREFIX_PATH="/usr/lib"
declare -x COLORTERM="truecolor"
declare -x DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus"
declare -x DEFAULTS_PATH="/usr/share/gconf/cinnamon.default.path"
declare -x DESKTOP_SESSION="cinnamon"
declare -x DISPLAY=":0"
declare -x GDMSESSION="cinnamon"
declare -x GDM_LANG="de_DE"
declare -x GJS_DEBUG_OUTPUT="stderr"
declare -x GJS_DEBUG_TOPICS="JS ERROR;JS LOG"
declare -x GNOME_DESKTOP_SESSION_ID="this-is-deprecated"
declare -x GNOME_TERMINAL_SCREEN="/org/gnome/Terminal/screen/3383bf57_7307_4aea_ada8_299ad807e660"
declare -x GNOME_TERMINAL_SERVICE=":1.74"
declare -x GPG_AGENT_INFO="/run/user/1000/gnupg/S.gpg-agent:0:1"
declare -x GTK_MODULES="gail:atk-bridge"
declare -x GTK_OVERLAY_SCROLLING="1"

no help again
and have it as rwx/rwx/rwx in /usr/lib

still:

Defaulting to Linux build environment.
LIB_ROSCO:LIBROSCO-NOTFOUND
PATHLIB_ROSCO:LIBROSCO-NOTFOUND
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
LIBROSCO
linked by target "mems-rosco2.2.6" in directory /home/leopold/QT-examples/mems-rosco2.2.6

Configuring incomplete, errors occurred!

Now my question: Is this caused by an other entry in the cmakelists file?
Here it is:

cmake_minimum_required (VERSION 2.8.11)
set (CMAKE_COMPILER_IS_GNUCC)
set (PROJECTNAME "MEMS-rosco2.2.6")

string (TOLOWER ${PROJECTNAME} PNAME)
project (${PNAME})
add_definitions (-DPROJECTNAME=\"${PROJECTNAME}\")

set (VER_MAJOR 0)
set (VER_MINOR 5)
set (VER_PATCH 0)

SET (Qt5LinguistTools_DIR /opt/Qt/5.12.2/gcc_64/lib/cmake/Qt5LinguistTools CACHE PATH "Qt5LinguistTools_DIR")

FIND_PACKAGE( Qt5LinguistTools )

set (LANGUAGES
		transfile_en
		transfile_esp
		transfile_fr
		transfile_ge
	)
set_directory_properties(PROPERTIES CLEAN_NO_CUSTOM 1)
qt5_create_translation(TRANSLATION_MESSAGES ${FILES_TO_TRANSLATE} ${TRANSLATION_FILES})
qt5_add_translation(TRANSLATION_QM ${TRANSLATION_FILES})
add_custom_target(translations_update DEPENDS ${TRANSLATION_MESSAGES})
add_custom_target(translations DEPENDS ${TRANSLATION_QM})

set (CMAKE_INCLUDE_CURRENT_DIR ON)
set (CMAKE_AUTOMOC ON)

set (CPACK_SOURCE_GENERATOR "TGZ")
set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${VER_MAJOR}.${VER_MINOR}.${VER_PATCH}-src")
set (CPACK_SOURCE_IGNORE_FILES
      ".*~$"
      ".git"
      ".gitignore"
      ".*swp$"
      ".*zip$"
      ".*gz$"
      ".*deb$"
      "Makefile.*"
      "moc_"
      "qrc_"
      "^CPack.*"
      "_CPack_Packages"
      "CPackConfig.cmake"
      "CPackSourceConfig.cmake"
      "CMakeFiles"
      "CMakeCache.txt"
      "CMakeLists.txt.user*"
      "cmake_install.cmake"
      "install_manifest.txt"
      "README.TXT"
      "LICENSE.TXT"
      "build/"
      "build-win32/"
      "settings.ini"
      "debug"
      "release"
      "object_script.*")

configure_file (
  "help.html.in"
  "${CMAKE_SOURCE_DIR}/help.html"
  )

set(CMAKE_INSTALL_RPATH "/usr/local/lib")
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)

find_package (Qt5Widgets REQUIRED)

set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")

					 
					 include_directories ("${CMAKE_SOURCE_DIR}"
                     "${CMAKE_SOURCE_DIR}/lib"
                     "${CMAKE_SOURCE_DIR}/qledindicator"
                     "${CMAKE_SOURCE_DIR}/analogwidgets"
                     "${CMAKE_CURRENT_BINARY_DIR}"
                     "${Qt5Widgets_INCLUDE_DIRS}"
					 )


qt5_wrap_ui (UI_SOURCE mainwindow.ui)
qt5_add_resources (RG_RESOURCE resources.qrc)

add_definitions ("-DVER_MAJOR=${VER_MAJOR}"
                 "-DVER_MINOR=${VER_MINOR}"
                 "-DVER_PATCH=${VER_PATCH}")

add_executable (${PNAME} main.cpp
                         memsinterface.cpp
                         helpviewer.cpp
                         logger.cpp
                         serialdevenumerator.cpp
                         mainwindow.cpp
                         aboutbox.cpp
                         optionsdialog.cpp
                         qledindicator/qledindicator.cpp
                         analogwidgets/led.cpp
                         analogwidgets/functions.cpp
                         analogwidgets/widgetwithbackground.cpp
                         analogwidgets/manometer.cpp
                         analogwidgets/abstractmeter.cpp



                         ${UI_SOURCE}
                         ${RG_RESOURCE})

 #set (LIBROSCO_PATH "../librosco")
 #include_directories ("${LIBROSCO_PATH}/include")

if (MINGW)
  message (STATUS "Found Windows/MinGW platform.")

  # prevent the final executable from launching a terminal window in parallel with the main GUI
  set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mwindows")

  # -fPIC appears to be redundant when building win32 binaries, so disable that flag
  string (REGEX REPLACE "-fPIC" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})

  set (LIBROSCO_PATH "$ENV{SystemDrive}/mems-rosco")
  include_directories ("${LIBROSCO_PATH}/include")
  include_directories ("/usr/local/lib/include")

  message (STATUS "Defaulting installation path to: $ENV{SystemDrive}/${PNAME}")
  set (CMAKE_INSTALL_PREFIX "$ENV{SystemDrive}/${PNAME}")
  set (EXE_FILE "${CMAKE_CURRENT_BINARY_DIR}/${PNAME}.exe")

  # When we call find_library() below, we're only looking for DLLs, so set the suffix list appropriately
  set (CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
  message (STATUS "Limiting find_library() suffixes to ${CMAKE_FIND_LIBRARY_SUFFIXES}")

  find_library (LIBGCC NAMES libgcc_s_sjlj-1 libgcc_s_seh-1 libgcc_s_dw2-1)
	  if (LIBGCC)
		message (STATUS "Found libgcc at ${LIBGCC}")
	  else ()
		message (SEND_ERROR "Could not find libgcc!")
	  endif ()

  find_library (LIBSTDCPP libstdc++-6)
	  if (LIBSTDCPP)
		message (STATUS "Found libstdc++ at ${LIBSTDCPP}")
	  else ()
		message (SEND_ERROR "Could not find libstdc++!")
	  endif ()

  find_library (ZLIB zlib1)
	  if (ZLIB)
		message (STATUS "Found zlib1 at ${ZLIB}")
	  else ()
		message (SEND_ERROR "Could not find zlib1!")
	  endif ()

  find_library (QTCORE_DLL Qt5Core)
	  if (QTCORE_DLL)
		message (STATUS "Found QtCore at ${QTCORE_DLL}")
	  else ()
		message (SEND_ERROR "Could not find Qt5Core.dll! Check that the Qt5 bin/ directory (or the qtbase/bin/ directory) is in your PATH.")
	  endif ()

  find_library (QTGUI_DLL Qt5Gui)
	  if (QTGUI_DLL)
		message (STATUS "Found QtGui at ${QTGUI_DLL}")
	  else ()
		message (SEND_ERROR "Could not find Qt5Gui.dll! Check that the Qt5 bin/ directory (or the qtbase/bin/ directory) is in your PATH.")
	  endif ()

  find_library (QTWIDGETS_DLL Qt5Widgets)
	  if (QTGUI_DLL)
		message (STATUS "Found QtWidgets at ${QTWIDGETS_DLL}")
	  else ()
		message (SEND_ERROR "Could not find Qt5Widgets.dll! Check that the Qt5 bin/ directory (or the qtbase/bin/ directory) is in your PATH.")
	  endif ()

  find_library (QWINDOWS_DLL qwindows)
	  if (QWINDOWS_DLL)
		message (STATUS "Found Qt qwindows platform plugin at ${QWINDOWS_DLL}")
	  else ()
		message (SEND_ERROR "Could not find Qt qwindows platform plugin!")
	  endif ()
  
    find_library (LIPWINPTREAD libwinpthread-1)
	  if (LIPWINPTREAD)
		message (STATUS "Found libwinptread plugin at ${LIPWINPTREAD}")
	  else ()
		message (SEND_ERROR "Could not find winptread platform plugin!")
	  endif ()

  find_library(LIBROSCO_DLL librosco PATHS ${LIBROSCO_PATH} ${CMAKE_INSTALL_PREFIX})
	  if (LIBROSCO_DLL)
		message (STATUS "Found librosco at ${LIBROSCO_DLL}")
	  else ()
		message (SEND_ERROR "Could not find librosco.dll! Check that it exists in one of the directories in your PATH.")
	  endif ()

  #target_link_libraries (${PNAME} ${LIBROSCO_DLL} Qt5::Widgets)

  # convert Unix-style newline characters into Windows-style
  configure_file ("${CMAKE_SOURCE_DIR}/README" "${CMAKE_BINARY_DIR}/README.TXT" NEWLINE_STYLE WIN32)
  configure_file ("${CMAKE_SOURCE_DIR}/LICENSE" "${CMAKE_BINARY_DIR}/LICENSE.TXT" NEWLINE_STYLE WIN32)

  install (FILES "${CMAKE_BINARY_DIR}/README.TXT" "${CMAKE_BINARY_DIR}/LICENSE.TXT" DESTINATION "doc")
  install (FILES ${EXE_FILE}
                 ${LIBGCC}
                 ${LIBSTDCPP}
                 ${QTCORE_DLL}
                 ${QTGUI_DLL}
                 ${QTWIDGETS_DLL}
                 ${LIBROSCO_DLL}
         ${LIPWINPTREAD}
                 ${ZLIB}
           DESTINATION ".")
  install (FILES ${QWINDOWS_DLL} DESTINATION "platforms")

  set (CPACK_GENERATOR "ZIP")
  set (CPACK_PACKAGE_NAME ${PROJECT_NAME})
  set (CPACK_INCLUDE_TOPLEVEL_DIRECTORY 0)
  set (CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${VER_MAJOR}.${VER_MINOR}.${VER_PATCH}-${CMAKE_SYSTEM_NAME}")
  include (CPack)

else()
    message (STATUS "Defaulting to Linux build environment.")
    set(CMAKE_INCLUDE_CURRENT_DIR ON)
    set( CMAKE_PREFIX_PATH =/usr/lib)
  #  file(WRITE "${LIBROSCO} )#${CMAKE_STATIC_LIBRARY_PREFIX}librosco ${CMAKE_STATIC_LIBRARY_SUFFIX}so*" )
    find_library([${LIBROSCO}]
                 HINTS /usr/lib)

    # check if we found the library
     message(STATUS "LIB_ROSCO:${LIBROSCO}")
      message(PATH "LIB_ROSCO:${LIBROSCO}")

    target_link_libraries (${PNAME} ${LIBROSCO} Qt5::Widgets)

  set (CMAKE_SKIP_RPATH TRUE)
  set (CMAKE_INSTALL_PREFIX "/usr")
  set (EXE_FILE "${CMAKE_CURRENT_BINARY_DIR}/${PNAME}")

  # set the installation destinations for the header files,
  # shared library binaries, and reference utility
  install (FILES ${EXE_FILE} DESTINATION "bin"
           PERMISSIONS
            OWNER_READ OWNER_EXECUTE OWNER_WRITE
            GROUP_READ GROUP_EXECUTE
            WORLD_READ WORLD_EXECUTE)

  install (DIRECTORY DESTINATION "share/doc/${PNAME}" DIRECTORY_PERMISSIONS
            OWNER_READ OWNER_EXECUTE OWNER_WRITE
            GROUP_READ GROUP_EXECUTE
            WORLD_READ WORLD_EXECUTE)

  install (FILES "${CMAKE_SOURCE_DIR}/README"
                 "${CMAKE_SOURCE_DIR}/LICENSE"
           DESTINATION "share/doc/${PNAME}"
           PERMISSIONS
            OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ)

  # set the architecture flag that will be used by the Debian package builder
  if (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")
    set (CPACK_DEBIAN_PACKAGE_ARCHITECTURE amd64)
  elseif (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "i686")
    set (CPACK_DEBIAN_PACKAGE_ARCHITECTURE i386)
  endif (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")

  set (CPACK_GENERATOR "DEB")
  set (CPACK_PACKAGE_NAME ${PROJECT_NAME})
  set (CPACK_PACKAGE_VERSION_MAJOR ${VER_MAJOR})
  set (CPACK_PACKAGE_VERSION_MINOR ${VER_MINOR})
  set (CPACK_PACKAGE_VERSION_PATCH ${VER_PATCH})
  set (CPACK_DEBIAN_PACKAGE_MAINTAINER "Colin Bourassa <colin.bourassa@gmail.com>")
  set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Graphical display for data read from Rover MEMS 1.6 (Modular Engine Management System)")
  set (CPACK_DEBIAN_PACKAGE_SECTION "Science")
  set (CPACK_DEBIAN_PACKAGE_DEPENDS "libc6 (>= 2.13), libstdc++6 (>= 4.6.3), librosco (>= 0.1.0), libqt5core5a (>= 5.0.2), libqt5gui5 (>= 5.0.2), libqt5widgets5 (>= 5.0.2)")
  set (CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${VER_MAJOR}.${VER_MINOR}.${VER_PATCH}-${CMAKE_SYSTEM_NAME}-${CPACK_DEBIAN_PACKAGE_ARCHITECTURE}")
  set (CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/LICENSE")
  set (CPACK_RESOURCE_FILE_README "${CMAKE_SOURCE_DIR}/README")

  include(CPack)

endif()

Christian Ehrlicher

@Leopold said in cmake in linux ubuntu:

find_library([${LIBROSCO}]

This is wrong. See the documentation - you need to pass a variable, not the content of a variable

SGaist

@Leopold said in cmake in linux ubuntu:

set( CMAKE_PREFIX_PATH =/usr/lib)

That's an invalid path.

Leopold

Hi both,
as I tried the path with quotation marks as well and as variable only librosco in small letters (I have tried all forms of writing) and nothing helped , could you please give me the examples.

VRonin

As I said:

@VRonin said in cmake in linux ubuntu:

use find_package(librosco)

You are using find_library that tryes to link to a dll (which is already wrong) and it contains no infos on the dependancies

set( CMAKE_PREFIX_PATH =/usr/lib)

Remove this line, it just creates a mess as it might remove search paths. CMAKE_PREFIX_PATH should be set on the command line (if you are using Qt Creator you have to set it in the project configuration, on the left vertical bar, the wrench icon). /usr/lib is already in PATH so you should actually do nothing

Leopold

Hi VRonin
I did that```
set(CMAKE_INCLUDE_CURRENT_DIR ON)
find_package(librosco)
# check if we found the library
message(PATH "LIB_ROSCO: ${librosco}" )
message(STATUS "LIB_ROSCO:${librosco}" )

how do i have to write the message command

Leopold

If I configure directly with cmake I get this error:

CMake Warning at CMakeLists.txt:234 (find_package):
  By not providing "Findlibrosco.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "librosco",
  but CMake did not find one.

  Could not find a package configuration file provided by "librosco" with any
  of the following names:

    libroscoConfig.cmake
    librosco-config.cmake

  Add the installation prefix of "librosco" to CMAKE_PREFIX_PATH or set
  "librosco_DIR" to a directory containing one of the above files.  If
  "librosco" provides a separate development package or SDK, be sure it has
  been installed.


PATHLIB_ROSCO: 
LIB_ROSCO:
Configuring done

Leopold

I can not find those files myself. Do I have to add a command in the cmakelists.txt for librosco

VRonin

what are the contents of /usr/lib/librosco?

Leopold

I have no folder /usr/lib/librosco but
in /usr/lib there are the three librosco.so ,librosco.so.2 and librosco.so.2.0.0

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cmake in linux ubuntu