in my build scenario i specify the target in my top level CMakeLists.txt. Within a subfolder i want to use scxmlcc_generator.cmake to generate a state machine.
This setup isn't working. I created an example branch here.
During cmake run, the following error message occurs:
[marcel@elfin-behlau build]$ cmake -G "Ninja" -DDEVELOPER=ON ..
CMake Warning (dev) in CMakeLists.txt:
No project() command is present. The top-level CMakeLists.txt file must
contain a literal, direct call to the project() command. Add a line of
code such as
project(ProjectName)
near the top of the file, but after cmake_minimum_required().
CMake is pretending there is a "project(Project)" command on the first
line.
This warning is for project developers. Use -Wno-dev to suppress it.
CMake Warning (dev) in CMakeLists.txt:
cmake_minimum_required() should be called prior to this top-level project()
call. Please see the cmake-commands(7) manual for usage documentation of
both commands.
This warning is for project developers. Use -Wno-dev to suppress it.
-- The C compiler identification is GNU 13.2.1
-- The CXX compiler identification is GNU 13.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Deprecation Warning at src/CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
-- Found Boost: /usr/lib/cmake/Boost-1.83.0/BoostConfig.cmake (found version "1.83.0") found components: filesystem system program_options
CMake Deprecation Warning at src/examples/CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Deprecation Warning at src/test/CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: /home/marcel/Documents/scxmlcc/build/src/test/googletest-download
[1/9] Creating directories for 'googletest'
[2/9] Performing download step (git clone) for 'googletest'
Cloning into 'googletest-src'...
HEAD is now at 2fe3bd99 Merge pull request #1433 from dsacre/fix-clang-warnings
[3/9] Performing update step for 'googletest'
[4/9] No patch step for 'googletest'
[5/9] No configure step for 'googletest'
[6/9] No build step for 'googletest'
[7/9] No install step for 'googletest'
[8/9] No test step for 'googletest'
[9/9] Completed 'googletest'
CMake Deprecation Warning at build/src/test/googletest-src/CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Deprecation Warning at build/src/test/googletest-src/googlemock/CMakeLists.txt:42 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Deprecation Warning at build/src/test/googletest-src/googletest/CMakeLists.txt:49 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
CMake Warning (dev) at build/src/test/googletest-src/googletest/cmake/internal_utils.cmake:239 (find_package):
Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules
are removed. Run "cmake --help-policy CMP0148" for policy details. Use
the cmake_policy command to set the policy and suppress this warning.
Call Stack (most recent call first):
build/src/test/googletest-src/googletest/CMakeLists.txt:84 (include)
This warning is for project developers. Use -Wno-dev to suppress it.
-- Found PythonInterp: /usr/bin/python (found version "3.11.8")
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Configuring done (3.6s)
CMake Error at src/examples/subfolder/CMakeLists.txt:5 (target_sources):
Cannot find source file:
/home/marcel/Documents/scxmlcc/build/src/examples/subfolder/microwave-02-cplusplus.h
Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
.ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
.f95 .f03 .hip .ispc
CMake Error at src/examples/CMakeLists.txt:36 (add_library):
No SOURCES given to target: testlib
I'm not sure, why cmake didn't detect/use the GENERATED TRUE property here, or what the problem is.
Regarding the modern cmake motto Everything is a target, the problem can be fixed by using an custom intermediate target. Using add_custom_target with a command argument didn't work in a smooth manner, since The target has no output file and is always considered out of date even if the commands try to create a file with the name of the target.
The MR changes the interface of the scxmlcc_generator command. Instead of getting the name of the generated file, now the depended target must be passed. This will cause some problems, if the input file should be used in multiple targets. I will address this in an extra MR.
The relevant changes are applied already for the example and test folder.
Hi,
in my build scenario i specify the target in my top level CMakeLists.txt. Within a subfolder i want to use
scxmlcc_generator.cmaketo generate a state machine.This setup isn't working. I created an example branch here.
During cmake run, the following error message occurs:
I'm not sure, why cmake didn't detect/use the
GENERATED TRUEproperty here, or what the problem is.Regarding the modern cmake motto
Everything is a target, the problem can be fixed by using an custom intermediate target. Using add_custom_target with a command argument didn't work in a smooth manner, sinceThe target has no output file and is always considered out of date even if the commands try to create a file with the name of the target.The MR changes the interface of the
scxmlcc_generatorcommand. Instead of getting the name of the generated file, now the depended target must be passed. This will cause some problems, if the input file should be used in multiple targets. I will address this in an extra MR.The relevant changes are applied already for the example and test folder.