I met some trouble when i try to create dir of build , i type cmake -B build, then error occur。 I google this mistake but cannot found .
environment：
Distributor ID: Ubuntu
Description: Ubuntu 18.04.6 LTS
Release: 18.04
Codename: bionic
Linux cs144vm 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
cs144@cs144vm ~/w/c/testlib> cmake -B build/
CMake Error: Could not find cmake module file: CMakeDetermineLANGUAGECompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly.
Missing variable is:
CMAKE_LANGUAGE_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly.
Missing variable is:
CMAKE_LANGUAGE_COMPILER
CMake Error: Could not find cmake module file: /home/cs144/workspace/cmake-3.25.1-tutorial-source/testlib/build/CMakeFiles/3.25.1/CMakeLANGUAGECompiler.cmake
CMake Error at CMakeLists.txt:9 (project):
No CMAKE_LANGUAGE_COMPILER could be found.
Tell CMake where to find the compiler by setting the CMake cache entry
CMAKE_LANGUAGE_COMPILER to the full path to the compiler, or to the
compiler name if it is in the PATH.
CMake Error: Could not find cmake module file: CMakeLANGUAGEInformation.cmake
CMake Error: CMAKE_LANGUAGE_COMPILER not set, after EnableLanguage
– Configuring incomplete, errors occurred!
See also “/home/cs144/workspace/cmake-3.25.1-tutorial-source/testlib/build/CMakeFiles/CMakeOutput.log”.
my CMakeLists.txt:
cmake_minimum_required(VERSION 3.20)
set(CXX_STANDARD 11)
set(CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS ON)
project(testlib LANGUAGE CXX C)
add_executable(main)
file(GLOB sources CONFIGURE_DEPENDS *.cpp *.h )
target_sources(main PUBLIC ${sources})