I get the following error when I try to use cmake to compile a source code:
$ sudo cmake -DUSE_QT5=1 -DCMAKE_INSTALL_PREFIX=/home/linux/myYade ../trunk
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:35 (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!
See also "/home/linux/myYade/trunk/CMakeFiles/CMakeOutput.log".
See also "/home/linux/myYade/trunk/CMakeFiles/CMakeError.log".
Any help to get this resolved?
Related
I'm trying to compile the latest version of yaml-cpp on my MacOS but I got the following error message:
cmake -G "Xcode" -DYAML_BUILD_SHARED_LIBS=on ..
-- The CXX compiler identification is AppleClang 13.0.0.13000029 CMake Error at CMakeLists.txt:10 (project): No CMAKE_CXX_COMPILER could be found.
-- Configuring incomplete, errors occurred! See also "/Users/surrutiaquir/Software/yaml-cpp/build/CMakeFiles/CMakeOutput.log".
What am I doing wrong here? Thanks in advance.
I'm trying to compile nvidia Maxine with cmake but am getting this error
The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:7 (project):
No CMAKE_CXX_COMPILER could be found.
Configuring incomplete, errors occurred!```
I have a problem with this CMakeLists.txt file:
cmake_minimum_required(VERSION 2.6)
SET(CMAKE_C_COMPILER C:/MinGW/bin/gcc)
SET(CMAKE_CXX_COMPILER C:/MinGW/bin/g++)
project(cmake_test)
add_executable(a.exe test.cpp)
Calling cmake with: cmake -G "MinGW Makefiles" , it fails with the following output:
c:\Users\pietro.mele\projects\tests\buildSystem_test\cmake_test>cmake -G "MinGW Makefiles" .
-- The C compiler identification is GNU 4.6.1
-- The CXX compiler identification is GNU 4.6.1
-- Check for working C compiler: C:/MinGW/bin/gcc
CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name.
CMake Error: Internal CMake error, TryCompile configure of cmake failed
-- Check for working C compiler: C:/MinGW/bin/gcc -- broken
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:52 (MESSAGE):
The C compiler "C:/MinGW/bin/gcc" is not able to compile a simple test
program.
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:10 (project)
CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name.
CMake Error: your CXX compiler: "C:/MinGW/bin/g++" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
-- Configuring incomplete, errors occurred!
However the gcc compiler is in C:/MinGW/bin/ and it works.
Any idea?
Platform:
Windows 7
MinGW/GCC 4.6
Never try to set the compiler in the CMakeLists.txt file.
See the CMake FAQ about how to use a different compiler:
https://gitlab.kitware.com/cmake/community/wikis/FAQ#how-do-i-use-a-different-compiler
(Note that you are attempting method #3 and the FAQ says "(avoid)"...)
We recommend avoiding the "in the CMakeLists" technique because there are problems with it when a different compiler was used for a first configure, and then the CMakeLists file changes to try setting a different compiler... And because the intent of a CMakeLists file should be to work with multiple compilers, according to the preference of the developer running CMake.
The best method is to set the environment variables CC and CXX before calling CMake for the very first time in a build tree.
After CMake detects what compilers to use, it saves them in the CMakeCache.txt file so that it can still generate proper build systems even if those variables disappear from the environment...
If you ever need to change compilers, you need to start with a fresh build tree.
I had similar problem as Pietro,
I am on Window 10 and using "Git Bash".
I tried to execute >>cmake -G "MinGW Makefiles", but I got the same error as Pietro.
Then, I tried >>cmake -G "MSYS Makefiles", but realized that I need to set my environment correctly.
Make sure set a path to C:\MinGW\msys\1.0\bin and check if you have gcc.exe there. If gcc.exe is not there then you have to run C:/MinGW/bin/mingw-get.exe and install gcc from MSYS.
After that it works fine for me
Using with FILEPATH option might work:
set(CMAKE_CXX_COMPILER:FILEPATH C:/MinGW/bin/gcc.exe)
I had the same issue. And in my case the fix was pretty simple. The trick is to simply add the ".exe" to your compilers path. So, instead of :
SET(CMAKE_C_COMPILER C:/MinGW/bin/gcc)
It should be
SET(CMAKE_C_COMPILER C:/MinGW/bin/gcc.exe)
The same applies for g++.
I'd like to use CMake to generate makefiles for non C project. I don't need a C compiler to build my project. As a matter of fact, I don't have a C compiler installed on the host machine.
My CMakeLists.txt looks like:
cmake_minimum_required (VERSION 2.6)
project (the_thing.html)
LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/Modules/cmake-pandocology")
INCLUDE(pandocology)
add_document(
TARGET the_thing
OUTPUT_FILE the_thing.html
SOURCES the_thing.md
)
When I run cmake on my windows machine:
$ mkdir dict && cd dist
$ cmake .. -G"Unix Makefiles"
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:2 (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:2 (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!
See also ".../dist/CMakeFiles/CMakeOutput.log".
See also ".../dist/CMakeFiles/CMakeError.log".
Those two logfiles give no additional clue. How do I fix that project for it to ignore the absence of a C (and C++) compiler?
You need to explicitly say there are no languages.
project("the_thing.html"
LANGUAGES
NONE
)
That's from one of my projects, but it uses modern CMake (your minimum version is 2.6). The above may work for you, but if not this should do it:
project("the_thing.html" NONE)
I keep getting an error when I try to build yaml-cpp on Windows.
Using the CMake gui application I selected build- and sourcepath correctly, but as soon as I hit the "Configure" Button there is the following error thrown:
CMake Error: CMake was unable to find a build program corresponding to "**MinGW Makefiles**". **CMAKE_MAKE_PROGRAM** is not set. You probably need to select a different build tool.
CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER
CMake Error: Could not find cmake module file:C:/Users/Robert/Programs/Lib/yaml-cpp/build/CMakeFiles/CMakeCCompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER
CMake Error: Could not find cmake module file:C:/Users/Robert/Programs/Lib/yaml-cpp/build/CMakeFiles/CMakeCXXCompiler.cmake
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
Configuring incomplete, errors occurred!
I know it has to do with the selected Generator, I selected CodeBlocks - MinGW Makefiles. However I have installed CodeBlocks correctly. So is there perhaps a way to set the CMAKE_MAKE_PROGRAM variable manually?