How can I define that a specific file will be always compiled, even if there is no build all command executed ?
make a new env:
[env:only_one_file_env]
build_src_filter = "+<the_file_to_compile_for_this_env.cpp>"`
then build it with pio run -e only_one_file_env
Thank you for your answer, but it seems that this is not what I am looking for.
Let me explain it in more detail:
I have a project with several files and normally only these files are compiled which are modified.
Now I want one file to compile always, even it is not modified.
The reason behind is as follows:
I want to implement the compilation date and time into my program and use the DATE and TIME . But this will be only updated if the file is compiled again.
What can I do ?
best regards
I have the same problem.
one solution is to delete (automatically) the .o file for the corresponding code where DATE and TIME is used. this forces the compiler to re-compile the code with updated defines.
here is what chatgpt gave me (haven’t tested it, but seems legit):
- Create a Python script (let’s call it
pre_compile.py
) in the root of your PlatformIO project. - In
pre_compile.py
, you can use Python’s standard library to remove the.o
file. Here’s a sample script:
pythonCopy code
import os
def pre_compile_action(env):
build_dir = ".pio/build/YOUR_BUILD_ENVIRONMENT/"
object_file = build_dir + "src/your_file.o"
if os.path.exists(object_file):
os.remove(object_file)
print("Removed object file to force recompilation: " + object_file)
# If you need to do this for multiple build environments, you can repeat these lines for each.
Export("pre_compile_action")
Replace YOUR_BUILD_ENVIRONMENT
with your PlatformIO environment name and your_file.o
with the name of the object file you want to force recompilation for.
- In your
platformio.ini
file, add thepre:script
directive to call this script before compiling:
iniCopy code
[env:your_environment]
platform = ...
board = ...
framework = ...
extra_scripts = pre:pre_compile.py
This way, the script will be executed before each compilation process, effectively removing the .o
file and forcing a recompilation of your source file.
Note: The script and the platformio.ini
file are just examples. You will need to adapt them to fit your specific project layout and requirements.