cant cmake, got no environment or smthn idk what im doing

[LOLZSICKA]

everything from command run to end of command.

[lolzsicka@abyssal build]$ cmake ..
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:5 (project):
  No CMAKE_C_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:5 (project):
  No CMAKE_CXX_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!

same thing but with debug output

[lolzsicka@abyssal build]$ cmake --debug-output ..
Running with debug output on.
-- The C compiler identification is unknown
   Called from: [3]	/usr/share/cmake-3.26/Modules/CMakeDetermineCompilerId.cmake
                [2]	/usr/share/cmake-3.26/Modules/CMakeDetermineCCompiler.cmake
                [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
-- The CXX compiler identification is unknown
   Called from: [3]	/usr/share/cmake-3.26/Modules/CMakeDetermineCompilerId.cmake
                [2]	/usr/share/cmake-3.26/Modules/CMakeDetermineCXXCompiler.cmake
                [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
CMake Warning (dev) at /usr/share/cmake-3.26/Modules/CMakeFindBinUtils.cmake:220 (find_program):
  Policy CMP0126 is not set: set(CACHE) does not remove a normal variable of
  the same name.  Run "cmake --help-policy CMP0126" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.

  For compatibility with older versions of CMake, normal variable "CMAKE_AR"
  will be removed from the current scope.
Call Stack (most recent call first):
  /usr/share/cmake-3.26/Modules/CMakeDetermineCXXCompiler.cmake:202 (include)
  CMakeLists.txt:5 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

   Called from: [3]	/usr/share/cmake-3.26/Modules/CMakeFindBinUtils.cmake
                [2]	/usr/share/cmake-3.26/Modules/CMakeDetermineCXXCompiler.cmake
                [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
CMake Warning (dev) at /usr/share/cmake-3.26/Modules/CMakeFindBinUtils.cmake:220 (find_program):
  Policy CMP0126 is not set: set(CACHE) does not remove a normal variable of
  the same name.  Run "cmake --help-policy CMP0126" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.

  For compatibility with older versions of CMake, normal variable
  "CMAKE_LINKER" will be removed from the current scope.
Call Stack (most recent call first):
  /usr/share/cmake-3.26/Modules/CMakeDetermineCXXCompiler.cmake:202 (include)
  CMakeLists.txt:5 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

   Called from: [3]	/usr/share/cmake-3.26/Modules/CMakeFindBinUtils.cmake
                [2]	/usr/share/cmake-3.26/Modules/CMakeDetermineCXXCompiler.cmake
                [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
CMake Error at CMakeLists.txt:5 (project):
  No CMAKE_C_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


   Called from: [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
CMake Error at CMakeLists.txt:5 (project):
  No CMAKE_CXX_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


   Called from: [1]	/home/lolzsicka/ShapeCorners/CMakeLists.txt
-- Configuring incomplete, errors occurred!

im trying to get rounded corners on kwin, thats what im trying to do

[Duncaen]

Do you have a compiler installed?