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| author | Jeffery To <jeffery.to@gmail.com> | 2020-06-30 04:41:15 +0800 |
|---|---|---|
| committer | Jeffery To <jeffery.to@gmail.com> | 2020-06-30 15:43:01 +0800 |
| commit | e0e2224f8a80dd6b93dd00bd1e4a89e5a649c461 (patch) | |
| tree | c36edeeb713a87bad4e992fcb212a5eeec139f93 /lang/python/README.md | |
| parent | 811ff39de5cc3763e4509f852b28a97e9b571a4d (diff) | |
python-packages: Disable parallel build when host pip is needed
This adds PKG_BUILD_PARALLEL:=0 to packages that depend on host Python
packages (HOST_PYTHON3_PACKAGE_BUILD_DEPENDS), because installing
packages with multiple concurrent pip processes can lead to errors or
unexpected results[1].
This also:
* Move HOST_PYTHON3_PACKAGE_BUILD_DEPENDS definitions to before
python3-package.mk is included
* Update Python folder readme to include PKG_BUILD_PARALLEL:=0
[1]: https://github.com/pypa/pip/issues/2361
Signed-off-by: Jeffery To <jeffery.to@gmail.com>
Diffstat (limited to 'lang/python/README.md')
| -rw-r--r-- | lang/python/README.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lang/python/README.md b/lang/python/README.md index 4bceb978d..ac3bf51c7 100644 --- a/lang/python/README.md +++ b/lang/python/README.md @@ -332,8 +332,11 @@ These can be installed via pip and ideally they should only be installed like th Which is why [for example] if you need python cffi on the host build, it's easier to just add it via: ``` +PKG_BUILD_PARALLEL:=0 HOST_PYTHON3_PACKAGE_BUILD_DEPENDS:="cffi==$(PKG_VERSION)" ``` [cffi is one of those packages that needs a host-side package installed]. This works reasonably well in the current OpenWrt build system, as binaries get built for this package and get installed in the staging-dir `$(STAGING_DIR)/usr/lib/pythonX.Y/site-packages`. + +`PKG_BUILD_PARALLEL:=0` is necessary because installing packages with multiple concurrent pip processes can lead to [errors or unexpected results](https://github.com/pypa/pip/issues/2361). |