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According to the documentation for file(COPY) [1]: "Copying preserves input file timestamps, and optimizes out a file if it exists at the destination with the same ...

Generates a rule to copy each source file from source directory to ... ${SRC} NAME) # Command to copy the files to ${STEP1}/src, if changed.

07.12.2011 · copy_if_different doesn't do what I need (only copy if the original file changed since last copy), but I'm not just copying a file, I'm doing a MSGMERGE, that I only want to do if the original file changes. Maybe it's not possible, so it seems like generation time is the way to go, yet I don't know how to run commands at generation time. –

[CMake] file(COPY) is copying even if file hasn't changed ... Each time my CMakeLists.txt is run, the file(COPY) is copying over the file ...

According to the documentation for file(COPY) [1]: "Copying preserves input file timestamps, and optimizes out a file if it exists at the destination with the same ...

The generated file is modified and its timestamp updated on subsequent cmake runs only if its content is changed. The arguments are: <input> Path to the input file. A relative path is treated with respect to the value of CMAKE_CURRENT_SOURCE_DIR. The input path must be a file, not a directory. <output> Path to the output file or directory.

26.01.2018 · One comment: My destination for the copy is ${CMAKE_BINARY_DIR}/bin which is also where all the library files go. If I do not create this folder in the top CMakeLists.txt, then at configure, the "configure_file" command creates a file called "bin" and copies "filetocopy1" to that.

When you rebuild your project without having changed your cmake configuration, this command won't be executed. add_custom_commandis the preferred choice when you want to copy the file around on each build step. The right version for your task would be: add_custom_command( TARGET foo POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy

Write <content> into a file called <filename>.If the file does not exist, it will be created. If the file already exists, WRITE mode will overwrite it and APPEND mode will append to the end. Any directories in the path specified by <filename> that do not exist will be created.. If the file is a build input, use the configure_file() command to update the file only when its content changes.

While using rsync --checksum is a good general way to "copy if changed", in your particular case there is an even better solution!. If you want to avoid unnecessarily recompiling files you should use ccache which was built for exactly this purpose! In fact, not only will it avoid unnecessary recompiles of your auto-generated files, it will also speed things up whenever you do make …

19.03.2009 · ENDFOREACH(in_file) ENDMACRO(COPY_DIRECTORY_IF_CHANGED) -----Original Message----- From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf Of Werner Smekal Sent: 19 March 2009 08:07 To: Dancefire Cc: cmake at cmake.org Subject: Re: [CMake] How to copy

Dec 08, 2011 · Another option is to use configure_file with COPYONLY argument. configure_file (input_file output_file COPYONLY) This won't perform any variable substitution and will copy "input_file" when you run make. But it triggers a cmake run and this may be undesirable because of time consumption. Share Improve this answer edited May 18, 2017 at 21:04

Jun 04, 2020 · I can see a bunch of ways in CMake to copy files. But am not sure about targets. What’s the easiest way to create a target that says “if any of files have changed, then copy them into the CMake build destination directory”? This is roughly equivalent to the Xcode “copy files” build phase.

I'm using: execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different <some-file> <some-dest-dir>) Should the file be copied when: the file has changed ...

I believe you should be able to use a custom command that depends on the file. Something like:

20.07.2017 · My host OS is Windows 10 and I'm using >>> CMake 3.9.0-rc5. Each time my CMakeLists.txt is run, the file (COPY) is >>> copying over the file even if it didn't change. The "date modified" >>> timestamp for the destination file is updated. I do not want the copy >>> to occur if the source file has not changed (this appears to be the >>> intended ...

Unlike file(COPY ...) it creates a file-level dependency between input and output, that is: If the input file is modified the build system will re-run CMake to ...

I'm trying to create a simple project on CLion. It uses CMake (I'm new here) to generate Makefiles to build project (or some sort of it) All I need to is transfer some non-project file (some sort of resource file) to binary directory each time when I run the my code.

file(copy ${cmake_current_source_dir}/input.txt destination ${cmake_current_binary_dir}) The suggested configure_file is probably the easiest solution. However, it will not rerun the copy command to if you manually deleted the file from the build directory.

An important difference is that configure_file () creates a dependency on the source file, so CMake will be re-run if it changes. The file (COPY_FILE) sub-command does not create such a dependency. See also the file (COPY) sub-command just below which provides further file-copying capabilities.

If you need to e.g. bundle/copy data along your build you can use a call similar to this. Just make sure to select the target you want to ...

... me the CMake command which will allow me to copy a file in my src ... so if it changes, it will get copied again when you run the build.