CMake high version installation (stepping on the pit)

installation steps

1. Check the current cmake version:

cmake -version

2. Uninstall the current cmake: (skip this step if ROS is installed)

sudo apt remove cmake

3. Download cmake: You can download the new version
   directly from the cmake official website , or you can execute the following statement: (just change the version number for which version you want)

wget http://www.cmake.org/files/v3.16/cmake-3.22.0.tar.gz

4. Unzip and enter the directory

tar xf cmake-3.22.0.tar.gz
cd cmake-3.22.0

5. Execute after entering the folder

Linux uses bootstrap.sh to produce the compilation tool b2. At the same time, you can configure the installation path. The default installation path is /usr/local. If you need to change the path, you can check the information yourself

./bootstrap

6. Install

• Note:

Make can use make -j4 or make -j8 to increase the speed. Generally speaking, dual-core can use j4 and j8 to have high configuration requirements.

make && make install

Install the pit

1. I forgot to record one of the error reports, but the solution is to download gcc, gcc-c++ first (the author updated this first, I don’t know if the lower version downloaded with yum is easy to use)

yum -y install gcc
yum -y install gcc-c++

2. Error using ./bootstrap

-- Looking for gethostname
-- Looking for gethostname - found
-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR) 
CMake Error at Utilities/cmcurl/CMakeLists.txt:454 (message):
  Could not find OpenSSL.  Install an OpenSSL development package or
  configure CMake with -DCMAKE_USE_OPENSSL=OFF to build without OpenSSL.


-- Configuring incomplete, errors occurred!
See also "/home/whlg/cmake-3.16.6/CMakeFiles/CMakeOutput.log".
See also "/home/whlg/cmake-3.16.6/CMakeFiles/CMakeError.log".
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Error when bootstrapping CMake:
Problem while running initial CMake
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Solution, download OpenSSL ,
CentOS command yum install openssl-devel
ubuntu command:yum install libssl-dev