I am an (absolute) beginner with libwebsockets (and cmake), and am trying to build one of the minimal examples from libwebsockets.org:
"lws minimal ws server + permessage-deflate echo"
at
https://libwebsockets.org/git/libwebsockets/tree/minimal-examples/ws-server/minimal-ws-server-echo
I have installed libwebsockets-dev (sudo apt install libwebsockets-dev) and cmake (sudo apt install cmake).
The example page tells me to build the example (two .c files and CMakeLists.txt) using
$ cmake . && make
The build fails with the following message:
CMake Error at CMakeLists.txt:3 (find_package):
Could not find a package configuration file provided by "libwebsockets"
with any of the following names:
libwebsocketsConfig.cmake
libwebsockets-config.cmake
Add the installation prefix of "libwebsockets" to CMAKE_PREFIX_PATH or set
"libwebsockets_DIR" to a directory containing one of the above files. If
"libwebsockets" provides a separate development package or SDK, be sure it
has been installed.
-- Configuring incomplete, errors occurred!
See also "/home/user/ws/CMakeFiles/CMakeOutput.log".
I cannot find either of the .cmake files in my system (they are evidently not provided as part of package libwebsockets-dev.)
What am I missing?
Thank you!
Thank you, Tsyvarev, you are correct.
The solution was to build libwebsockets from github repository, use that instead of libwebsocket-dev installed from ubuntu 18.04.
Related
I'm trying to get involved in open source and also am quite interested in robotics, so I thought about contributing to MoveIt 2. As a first step, I'm installing MoveIt 2 from source on my Ubuntu 20.04 VM in VirtualBox.
I've run through all the instructions here: https://moveit.ros.org/install-moveit2/source/#:~:text=colcon%20build%20%2D%2Devent%2Dhandlers%20desktop_notification%2D%20status%2D%20%2D%2Dcmake%2Dargs%20%2DDCMAKE_BUILD_TYPE%3DRelease
However, the build is failing on the highlighted part. The error message is as follows:
Starting >>> geometric_shapes
--- stderr: geometric_shapes
CMake Error at CMakeLists.txt:47 (find_package):
By not providing "Findeigen3_cmake_module.cmake" in CMAKE_MODULE_PATH this
project has asked CMake to find a package configuration file provided by
"eigen3_cmake_module", but CMake did not find one.
Could not find a package configuration file provided by
"eigen3_cmake_module" with any of the following names:
eigen3_cmake_moduleConfig.cmake
eigen3_cmake_module-config.cmake
Add the installation prefix of "eigen3_cmake_module" to CMAKE_PREFIX_PATH
or set "eigen3_cmake_module_DIR" to a directory containing one of the above
files. If "eigen3_cmake_module" provides a separate development package or
SDK, be sure it has been installed.
---
Failed <<< geometric_shapes [1.20s, exited with code 1]
Summary: 0 packages finished [1.46s]
1 package failed: geometric_shapes
1 package had stderr output: geometric_shapes
33 packages not processed
Any help is really appreciated. Thanks!
You have to install ROS2 before building Move It 2. After installing the ROS2 binaries, the error doesn't occur.
Since yesterday none of my packages containing tests build. Catkin complains it cannot find gtest when using catkin_add_gtests(), since GTEST_FOUND is FALSE. You can see this in the error msg below, with the custom output I added to my CMakeLists. Up to yesterday, GTEST_FOUND was TRUE when catkin_add_gtests() was called.
This is the error I always get. In this case I'm trying to build a mockup package on a clean catkin workspace:
Errors << silly_pkg:cmake /home/paco/catkin_ws2/logs/silly_pkg/build.cmake.002.log
Not searching for unused variables given on the command line.
Re-run cmake no build system arguments
-- Using CATKIN_DEVEL_PREFIX: /home/paco/catkin_ws2/devel/.private/silly_pkg
-- Using CMAKE_PREFIX_PATH: /home/paco/catkin_ws2/devel;/opt/ros/kinetic
-- This workspace overlays: /home/paco/catkin_ws2/devel;/opt/ros/kinetic
-- Using PYTHON_EXECUTABLE: /usr/bin/python
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/paco/catkin_ws2/build/silly_pkg/test_results
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.7.11
-- GTEST_FOUND: FALSE
CMake Warning at /opt/ros/kinetic/share/catkin/cmake/test/gtest.cmake:149 (message):
skipping gtest 'test_silly_pkg' in project 'silly_pkg' because gtest was
not found
Call Stack (most recent call first):
/opt/ros/kinetic/share/catkin/cmake/test/gtest.cmake:79 (_catkin_add_executable_with_google_test)
/opt/ros/kinetic/share/catkin/cmake/test/gtest.cmake:28 (_catkin_add_google_test)
CMakeLists.txt:28 (catkin_add_gtest)
CMake Error at /home/paco/catkin_ws2/src/silly_pkg/CMakeLists.txt:33 (target_link_libraries):
Cannot specify link libraries for target "test_silly_pkg" which is not
built by this project.
-- Configuring incomplete, errors occurred!
See also "/home/paco/catkin_ws2/build/silly_pkg/CMakeFiles/CMakeOutput.log".
See also "/home/paco/catkin_ws2/build/silly_pkg/CMakeFiles/CMakeError.log".
cd /home/paco/catkin_ws2/build/silly_pkg; catkin build --get-env silly_pkg | catkin env -si /usr/bin/cmake /home/paco/catkin_ws2/src/silly_pkg --no-warn-unused-cli -DCATKIN_DEVEL_PREFIX=/home/paco/catkin_ws2/devel/.private/silly_pkg -DCMAKE_INSTALL_PREFIX=/home/paco/catkin_ws2/install; cd -
I am using catkin 0.7.11, libgtest-dev 1.7.0 and cmake 3.5.1. I use ROS Kinetic with Ubuntu 16.04. The only thing I did yesterday was reinstalling ROS Kinetic, but the package versions are exactly the same. Did anybody have this problem? Do you have any ideas on what could be happening?
EDIT 3/09/18:
By comparing with a functional catkin+gtest workspace in a different computer, I found out that the main difference is in the results of /opt/ros/kinetic/share/catkin/cmake/test/gtest.cmake. In the functional workspace, line 292 evaluates to TRUE (gtest/gmock is not a target) while in my workspace it evaluates to FALSE. This is because in my workspace running find_package(GMock QUIET) (line 287) sets gmock and gtest as imported targets, which does not happen in the other computer. Why is this different?
Thanks TikO for your help!
Since you wrote that cmake does not find the libraries and that you have reinstalled Kinetic, I assume that you have a freshly installed machine or wiped out gtest libraries by accident.
If you install libgtest-dev, you only get the sources which you need to build and install like this:
sudo apt-get install libgtest-dev
mkdir /tmp/gtest_build && cd /tmp/gtest_build
cmake /usr/src/gtest
make
#copy or symlink libgtest.a and ligtest_main.a to /usr/lib folder
sudo cp *.a /usr/lib
After this routine, you should be able to build again without cmake complaining.
Optional
If you have limited rights on your machine and you are not allowed to install the libraries in that way, just copy them into some home folder like
mkdir ~/lib && cp *.a ~/lib
But be aware of the fact, that you have to call catkin in the following way:
LIBRARY_PATH=~/lib GTEST_ROOT=~/lib catkin_make
LIBRARY_PATH tells the linker where to find the libraries, while GTEST_ROOT gives cmake the location hints for it's checks.
Reference: https://github.com/tik0/gtest_ros_example
SOLUTION FOUND
gmock and gtest were being set to imported target because the suggested manual compilation of libgtest had created a FindGMock.cmake file inside /usr/share/cmake-3.5/Modules. This file was being called by the find(GMock QUIET)
in catkin_add_gtests(), therefore setting the imported target. Just deleting FindGMock.cmake solved the issue.
I've already compiled and installed libzypp, but when I want to compile zypper then Cmake returns an error:
CMake Error at CMakeLists.txt:11 (INCLUDE):
INCLUDE could not find load file:
ZyppCommon
CMake Error at CMakeLists.txt:24 (GENERATE_PACKAGING):
Unknown CMake command "GENERATE_PACKAGING".
-- Configuring incomplete, errors occurred!
See also "/home/origincode/zypper/CMakeFiles/CMakeOutput.log".
Environment
My OS: Fedora 26
gcc version:7.1.1
cmake version:3.9.1
The reason is, that CMake does not find the file ZyppCommon.cmake which contains the definition of the macro GENERATE_PACKAGING. The file is part of libzypp (located in cmake/modules/ZyppCommon.cmake).
You have three options:
Install libzypp, then zypper's CMake will find the file.
You have to include the path to the file to the CMake prefix path.
If you use some Suse / openSuse dritribution, installing libzypp-devel does install the required file.
If you have it installed, maybe you have to clear the CMake cache.
I have a project, and need to set up and build an Apache24 server on windows, but there is almost non of information on that, can you give some advice?
I had to build and install Expat to get Apache running on windows 10 x64 with the instructions above. I build on Windows Visual Studio 2017 Community Edition using the x64 Native Command Prompt. (I installed all the VC and C++ modules - not sure which ones were specifically required.) Also i used the latest version of all of the software listed above so the install commands had to be adjusted accordingly. Trial by fire! Good luck.
I found the answer, after a lot of searching, I found an acceptable way to do it.
Software Requirements:
Visual Studio 2013 (I use the Community Edition)
Make a folder on C, call it BuildTools and install all the following programs there:
ActivePerl for Windows (64-bit, currently using 5.20.1.2000)
CMake for Windows (currently using 3.1.3)
GNU Awk for Windows (currently using 3.1.6-1)
GnuWin32 (any version from 2014+)
Netwide Assembler (NASM) (currently using 2.11.06)
Source Code Packages (I don't use ZLIB for Apache or OpenSSL, or LUA/LIBXML2/EXPAT, therefore these are not included in the process):
httpd-2.4.12.tar.gz
apr-1.5.1.tar.gz
apr-util.1.5.4.tar.gz
openssl-1.0.2a.tar.gz (yes it works with 1.0.2a!)
pcre-8.36.tar.gz
Here are the steps:
Extract all packages into their separate folders in your preferred source tree (e.g. C:\Development\Apache24\src)
Create custom build folders for Apache, PCRE, APR and APR-Util in your preferred build folder (e.g. C:\Development\Apache24\build
Your folder structure should resemble the below:
Make the following file changes so that ApacheMonitor gets built (without the Manifest error):
C:\Development\Apache24\src\httpd-2.4.12\CMakeLists.txt
Uncomment the section to build the ApacheMonitor utility (lines 769-775)
Find the following lines below, they will be in comments
# getting duplicate manifest error with ApacheMonitor
ADD_EXECUTABLE(ApacheMonitor support/win32/ApacheMonitor.c support/win32/ApacheMonitor.rc)
SET(install_targets ${install_targets} ApacheMonitor)
SET(install_bin_pdb ${install_bin_pdb} ${PROJECT_BINARY_DIR}/ApacheMonitor.pdb)
SET_TARGET_PROPERTIES(ApacheMonitor PROPERTIES WIN32_EXECUTABLE TRUE)
SET_TARGET_PROPERTIES(ApacheMonitor PROPERTIES COMPILE_FLAGS "-DAPP_FILE -DLONG_NAME=ApacheMonitor -DBIN_NAME=ApacheMonitor.exe / ${EXTRA_COMPILE_FLAGS}")
TARGET_LINK_LIBRARIES(ApacheMonitor ${EXTRA_LIBS} ${HTTPD_SYSTEM_LIBS} comctl32 wtsapi32)
Also
C:\Development\Apache24\src\httpd-2.4.12\support\win32\ApacheMonitor.rc
Comment out the line that includes ApacheMonitor.manifest (line 29)
//CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "ApacheMonitor.manifest"
4.1 Create a set_path.bat file with the following code:
SET VC_HOME=c:\Program Files (x86)\Microsoft Visual Studio 13.0\VC
call VC_HOME\vcvarsall amd64
SET BUILD_ROOT=C:\BuildTools
SET PATH=%PATH%;%BUILD_ROOT%\cmake\bin
SET PATH=%PATH%;%BUILD_ROOT%\gawk\bin
SET PATH=%PATH%;%BUILD_ROOT%\nasm
SET PATH=%PATH%;%BUILD_ROOT%\perl\bin
You will need to run that file later in the process.
From the Start menu, launch the VS2013 x64 Native Tools Command Prompt found under Visual Studio 2013->Visual Studio Tools. Alternatively, but not recommended, from a Windows Command Prompt.
5.1 Go to GnuWin32, find his lib and the include folder, and copy their content to the BuildTools/perl/lib folder, this should resolve some errors that came up in the process while I was doing this
5.2 This step, you can skip now, BUT, if there is an error that includes the expat.h and the expath_external.h files, Find an older version of Apache, and copy its expat_external.h to the apache24/include folder
Find expat.h file on this site
https://github.com/apache/apr-util/blob/0.9.x/xml/expat/lib/expat.h
copy its content over the file, you find in apache24/include folder Find an older version of Apache (don't know exactly witch version), and copy its expat_external.h to the apache24/include folder
Find expat.h file on this site
https://github.com/apache/apr-util/blob/0.9.x/xml/expat/lib/expat.h
copy its content over the file, you find in apache24/include folder
5.3. Find the set_path.bat folder from the console and run it.
this you need to do, to be able to run the next steps
Navigate into the build sub-folder for PCRE, run CMAKE to generate a suitable Makefile, then compile and install
cd /D C:\Development\Apache24\build\pcre
cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=C:\Apache24 -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_SHARED_LIBS=ON -DPCRE_BUILD_TESTS=OFF -DPCRE_BUILD_PCRECPP=OFF -DPCRE_BUILD_PCREGREP=OFF -DPCRE_SUPPORT_PCREGREP_JIT=OFF -DPCRE_SUPPORT_UTF=ON -DPCRE_SUPPORT_UNICODE_PROPERTIES=ON -DPCRE_NEWLINE=CRLF -DINSTALL_MSVC_PDB=OFF ..\..\src\pcre-8.36
nmake
nmake install
Navigate into the source sub-folder for OpenSSL, configure the build environment for compiling with NASM, then compile and install
cd /D C:\Development\Apache24\src\openssl-1.0.2a
perl Configure VC-WIN64A --prefix=C:\Apache24 --openssldir=C:\Apache24\conf enable-camellia no-idea no-mdc2 no-ssl2 no-ssl3 no-zlib
ms\do_win64a.bat
nmake /f ms\ntdll.mak
nmake /f ms\ntdll.mak install
Navigate into the build sub-folder for APR, run CMAKE to generate a suitable Makefile, then compile and install
cd /D C:\Development\Apache24\build\apr
cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=C:\Apache24 -DCMAKE_BUILD_TYPE=RelWithDebInfo -DMIN_WINDOWS_VER=0x0600 -DAPR_HAVE_IPV6=ON -DAPR_INSTALL_PRIVATE_H=ON -DAPR_BUILD_TESTAPR=OFF -DINSTALL_PDB=OFF ..\..\src\apr-1.5.1
nmake
nmake install
Navigate into the build sub-folder for APR-Util, run CMAKE to generate a suitable Makefile, then compile and install
cd /D C:\Development\Apache24\build\apr-util
cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=C:\Apache24 -DOPENSSL_ROOT_DIR=C:\Apache24 -DCMAKE_BUILD_TYPE=RelWithDebInfo -DAPU_HAVE_CRYPTO=ON -DAPR_BUILD_TESTAPR=OFF -DINSTALL_PDB=OFF ..\..\src\apr-util-1.5.4
nmake
nmake install
Navigate into the build sub-folder for Apache, run CMAKE to generate a suitable Makefile, then compile and install
cd /D C:\Development\Apache24\build\httpd
cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=C:\Apache24 -DCMAKE_BUILD_TYPE=RelWithDebInfo -DENABLE_MODULES=i -DINSTALL_PDB=OFF ..\..\src\httpd-2.4.12
nmake
nmake install
Finally, confirm everything is working
cd /D C:\Apache24\bin
openssl version
httpd -V
These are the steps and the problems I encountered, and I followed the steps from this site:
https://www.apachelounge.com/viewtopic.php?t=6462
Also I added a few more steps and solutions that I needed to do to make it work.
I hope this will help someone else in the future.
I want to build Kurento Media Server against latest Fedora.
However, CMake fails to configure sources:
Could not find a package configuration file provided by "KurentoHelpers"
with any of the following names:
KurentoHelpersConfig.cmake
kurentohelpers-config.cmake
I installed kms-cmake-utils, as suggested, to /usr/local/. However, I still have this error, even if I set CMAKE_PREFIX_PATH to the folder where kms-cmake-utils's install target put .cmake modules.
In fact, there is no KurentoHelpersConfig.cmake file in kms-cmake-utils.
How can I configure Kurento for Fedora?
Try installing to /usr instead of /usr/local because cmake is looking for modules in /usr/share
Executing cmake like this should fix the problem:
cmake .. -DCMAKE_PREFIX_PATH=/usr
You should append path of KurentoHelpersConfig.cmake to CMAKE_MODULE_PATH, do that by adding this line to CMakeLists.txt :
SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "/usr/local/share/cmake-3.5/Modules")
It seems something wrong in cmake, it cannot read external CMAKE_MODULE_PATH, so I force set into its arguments line ( Ubuntu server x86_64 used), pay attention -DCMAKE_MODULE_PATH=$CMAKE_MODULE_PATH.
HOME=`pwd`
BUILD=$HOME/build
export CMAKE_MODULE_PATH=$BUILD/usr/local/share/cmake-3.5/Modules
mkdir -p build
cd build
cmake -DCMAKE_PREFIX_PATH=$HOMEDIR/build -DCMAKE_MODULE_PATH=$CMAKE_MODULE_PATH ..
make DESTDIR=$HOMEDIR/build install