CMake has to be run twice, the first time always fails

Question

I'm running cmake on win10 WSL with ubuntu20.04, apt-get installed cmake and used the simpliest CMakeLists.txt as below:

cmake_minimum_required(VERSION 3.4)
project(my)
add_executable(testConst01 testConst.c01)

Run mkdir build; cd build; cmake ../my it will give a bunch of error:

CMake Error at /usr/share/cmake-3.16/Modules/CMakeDetermineSystem.cmake:185 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- The C compiler identification is GNU 9.4.0
CMake Error at /usr/share/cmake-3.16/Modules/CMakeDetermineCCompiler.cmake:212 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- The CXX compiler identification is GNU 9.4.0
CMake Error at /usr/share/cmake-3.16/Modules/CMakeDetermineCXXCompiler.cmake:210 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Detecting C compile features
-- Detecting C compile features - done
CMake Error at /usr/share/cmake-3.16/Modules/CMakeTestCCompiler.cmake:80 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at /usr/share/cmake-3.16/Modules/CMakeTestCXXCompiler.cmake:73 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!
See also "/mnt/d/my/build/CMakeFiles/CMakeOutput.log".
See also "/mnt/d/my/build/CMakeFiles/CMakeError.log".

Then I run cmake the second time, everything become ok, and make command will generate all I wanted. Then I rm -fr the build dir, do the job again. First time it fails and second time it succeeds. Always like this.

I took a look at the CMakeOutput.log and CMakeError.log file, didn't find any real error message either.

What is the cause of this problem, how to fix it? Thanks!

How do you expect cmake to interpret a file with the file ending `.c01`? Why are you using such an unconventional file name? — user17732522, Jul 12 '22 at 05:41

score 1 · Answer 1 · answered Jul 12 '22 at 06:20

Finnaly I found this was WSL config issue, not cmake problem, as stated in this thread:

Every call to configure_file fails on WSL: configure_file Problem configuring file

Step to fix: In wsl command line window, sudo vi /etc/wsl.conf add these lines:

options = "metadata"
enabled = true

Then close all wsl windows.

Then in cmd.exe or powershell, restart my linux instance. E.g. I'm using Ubuntu20.04 I'll wsl -t Ubuntu20.04

Then run my cmake job, everything is OK now.

CMake has to be run twice, the first time always fails

1 Answers1