diff --git a/contrib/code/setup.rst b/contrib/code/setup.rst index 2d14bb0d9..4eef48521 100644 --- a/contrib/code/setup.rst +++ b/contrib/code/setup.rst @@ -10,3 +10,134 @@ Setup and building [More setup and build instructions specifically for code contributors, building on the basics from the :ref:`Getting Started ` section.] + + +.. _configure-cache: + +Using Configure Cache (`configure -C`) +-------------------------------------- + +When running `./configure`, CPython performs a series of system checks, which can take time. +To speed up repeated builds, you can use the **configure cache**, which saves previous results: + +.. code-block:: sh + + ./configure -C + +### **Benefits** +- **Faster rebuilds**: Avoids redundant system checks, making subsequent runs quicker. +- **Improves development workflow**: Speeds up the edit-configure-build-test cycle, especially for frequent changes. +- **Reduces CPU and disk usage**: Skips unnecessary recomputation of configuration results. + +### **Clearing the Cache** +If you modify system settings, upgrade dependencies, or suspect cache-related issues, +clear the cache before reconfiguring to avoid outdated settings: + +.. code-block:: sh + + rm -f config.cache + +This ensures that `./configure` runs fresh system checks when necessary. + +### **When to Use `configure -C`** +- **Use it** when making minor code changes that don’t affect system dependencies. +- **Avoid it** after system updates, compiler changes, or dependency modifications to prevent build inconsistencies. + +--- + +### **Why This Additional Detail?** +- **The `-C` flag behavior**: Makes it clear when to use or avoid it. +- **Cache clearing instructions**: Important to prevent build failures due to stale configuration data. +- **More structured benefits**: Helps new contributors understand why they should use it. + +Would you like me to format this differently or adjust anything before you submit the PR? 🚀 + + + + + + +You said: +i need a detailed version of this make it such that the chances of merging becomes 100% +ChatGPT said: +Here's a detailed and well-structured version of the documentation, ensuring clarity and completeness while following Python's devguide standards. This version should maximize your chances of merging the PR successfully. + +Final Version for setup.rst +r +Copy +Edit +.. _configure-cache: + +Using Configure Cache (`configure -C`) +-------------------------------------- + +### **Overview** + +When running `./configure`, CPython performs a series of system checks to detect available features, libraries, and compiler options. These checks help generate a proper `Makefile` for building CPython. However, a fresh configuration scan can take significant time, especially on slower systems or when running it frequently during development. + +To optimize this process, you can use the **configure cache** (`configure -C`), which saves the results of previous runs and reuses them for subsequent configurations. + +.. code-block:: sh + + ./configure -C + +By caching detected system properties, this approach **eliminates redundant checks**, making reconfigurations significantly faster. + +--- + +### **Benefits of Using Configure Cache** + +Using `configure -C` can enhance the development workflow in multiple ways: + +- **Speeds up rebuilds**: Avoids rechecking system dependencies, making incremental changes quicker. +- **Reduces system load**: Skips redundant computations, lowering CPU usage. +- **Improves iteration time**: Speeds up the edit-configure-build-test cycle, especially for developers frequently modifying CPython’s internals. +- **Ensures consistency**: Maintains uniform configuration settings across multiple runs unless the cache is explicitly cleared. + +--- + +### **When to Use `configure -C`?** + +| Scenario | Use `configure -C`? | Reason | +|----------------------------------------------|-----------------|------------------------------------------------| +| Small code changes (e.g., modifying `.c` files) | ✅ Yes | Avoids unnecessary reconfiguration steps. | +| Frequent rebuilds without system changes | ✅ Yes | Saves time and system resources. | +| Upgrading system libraries (e.g., OpenSSL) | ❌ No | Cache may store outdated results, leading to inconsistencies. | +| Changing compiler settings or flags | ❌ No | A fresh `./configure` run is needed to reflect changes. | +| Switching between Python build environments | ❌ No | Using cache might introduce conflicts between builds. | + +--- + +### **Clearing the Configure Cache** + +If you have modified system settings, upgraded dependencies, or changed compiler options, it's recommended to **clear the cache** before re-running `./configure` to avoid build inconsistencies. + +To remove the cached configuration results, use: + +.. code-block:: sh + + rm -f config.cache + +This ensures that `./configure` performs a fresh system scan, preventing potential errors due to stale configuration data. + +**Best Practice**: If you encounter unexpected build issues after using `configure -C`, try clearing the cache first before debugging further. + +--- + +### **Additional Notes** + +- `configure -C` only **caches successful test results**. If a check fails, it will still be re-run in subsequent configurations. +- Some system changes might not require clearing the cache, but if in doubt, it's safer to remove it. +- The cache is stored in `config.cache` in the build directory and is automatically used if present when `configure -C` is executed. + +--- + +### **Summary** + +- `./configure -C` caches system checks to speed up rebuilds. +- Recommended for frequent code changes but **not** for system or compiler updates. +- Clear the cache using `rm -f config.cache` when necessary. + +By following these guidelines, you can make the most out of `configure -C` while ensuring stable and efficient builds. + +--- \ No newline at end of file diff --git a/developer-workflow/extension-modules.rst b/developer-workflow/extension-modules.rst index 61c1ff08a..708af01cb 100644 --- a/developer-workflow/extension-modules.rst +++ b/developer-workflow/extension-modules.rst @@ -277,6 +277,135 @@ project on different platforms. Updating ``Modules/Setup.{bootstrap,stdlib}.in`` ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +.. _configure-cache: + +Using Configure Cache (`configure -C`) +-------------------------------------- + +When running `./configure`, CPython performs a series of system checks, which can take time. +To speed up repeated builds, you can use the **configure cache**, which saves previous results: + +.. code-block:: sh + + ./configure -C + +### **Benefits** +- **Faster rebuilds**: Avoids redundant system checks, making subsequent runs quicker. +- **Improves development workflow**: Speeds up the edit-configure-build-test cycle, especially for frequent changes. +- **Reduces CPU and disk usage**: Skips unnecessary recomputation of configuration results. + +### **Clearing the Cache** +If you modify system settings, upgrade dependencies, or suspect cache-related issues, +clear the cache before reconfiguring to avoid outdated settings: + +.. code-block:: sh + + rm -f config.cache + +This ensures that `./configure` runs fresh system checks when necessary. + +### **When to Use `configure -C`** +- **Use it** when making minor code changes that don’t affect system dependencies. +- **Avoid it** after system updates, compiler changes, or dependency modifications to prevent build inconsistencies. + +--- + +### **Why This Additional Detail?** +- **The `-C` flag behavior**: Makes it clear when to use or avoid it. +- **Cache clearing instructions**: Important to prevent build failures due to stale configuration data. +- **More structured benefits**: Helps new contributors understand why they should use it. + +Would you like me to format this differently or adjust anything before you submit the PR? 🚀 + + + + + + +You said: +i need a detailed version of this make it such that the chances of merging becomes 100% +ChatGPT said: +Here's a detailed and well-structured version of the documentation, ensuring clarity and completeness while following Python's devguide standards. This version should maximize your chances of merging the PR successfully. + +Final Version for setup.rst +r +Copy +Edit +.. _configure-cache: + +Using Configure Cache (`configure -C`) +-------------------------------------- + +### **Overview** + +When running `./configure`, CPython performs a series of system checks to detect available features, libraries, and compiler options. These checks help generate a proper `Makefile` for building CPython. However, a fresh configuration scan can take significant time, especially on slower systems or when running it frequently during development. + +To optimize this process, you can use the **configure cache** (`configure -C`), which saves the results of previous runs and reuses them for subsequent configurations. + +.. code-block:: sh + + ./configure -C + +By caching detected system properties, this approach **eliminates redundant checks**, making reconfigurations significantly faster. + +--- + +### **Benefits of Using Configure Cache** + +Using `configure -C` can enhance the development workflow in multiple ways: + +- **Speeds up rebuilds**: Avoids rechecking system dependencies, making incremental changes quicker. +- **Reduces system load**: Skips redundant computations, lowering CPU usage. +- **Improves iteration time**: Speeds up the edit-configure-build-test cycle, especially for developers frequently modifying CPython’s internals. +- **Ensures consistency**: Maintains uniform configuration settings across multiple runs unless the cache is explicitly cleared. + +--- + +### **When to Use `configure -C`?** + +| Scenario | Use `configure -C`? | Reason | +|----------------------------------------------|-----------------|------------------------------------------------| +| Small code changes (e.g., modifying `.c` files) | ✅ Yes | Avoids unnecessary reconfiguration steps. | +| Frequent rebuilds without system changes | ✅ Yes | Saves time and system resources. | +| Upgrading system libraries (e.g., OpenSSL) | ❌ No | Cache may store outdated results, leading to inconsistencies. | +| Changing compiler settings or flags | ❌ No | A fresh `./configure` run is needed to reflect changes. | +| Switching between Python build environments | ❌ No | Using cache might introduce conflicts between builds. | + +--- + +### **Clearing the Configure Cache** + +If you have modified system settings, upgraded dependencies, or changed compiler options, it's recommended to **clear the cache** before re-running `./configure` to avoid build inconsistencies. + +To remove the cached configuration results, use: + +.. code-block:: sh + + rm -f config.cache + +This ensures that `./configure` performs a fresh system scan, preventing potential errors due to stale configuration data. + +**Best Practice**: If you encounter unexpected build issues after using `configure -C`, try clearing the cache first before debugging further. + +--- + +### **Additional Notes** + +- `configure -C` only **caches successful test results**. If a check fails, it will still be re-run in subsequent configurations. +- Some system changes might not require clearing the cache, but if in doubt, it's safer to remove it. +- The cache is stored in `config.cache` in the build directory and is automatically used if present when `configure -C` is executed. + +--- + +### **Summary** + +- `./configure -C` caches system checks to speed up rebuilds. +- Recommended for frequent code changes but **not** for system or compiler updates. +- Clear the cache using `rm -f config.cache` when necessary. + +By following these guidelines, you can make the most out of `configure -C` while ensuring stable and efficient builds. + +--- Depending on whether the extension module is required to get a functioning interpreter or not, we update :cpy-file:`Modules/Setup.bootstrap.in` or