build: export GIT_CEILING_DIRECTORIES for package builds

A package may run git as part of its build process, and if the package
source code is not from a git checkout, then git may traverse up the
directory tree to find buildroot's repository directory (.git).

For instance, Poetry Core, a Python build backend, will read the
contents of .gitignore for paths to exclude when creating a Python
package. If it finds buildroot's .gitignore file, then Poetry Core will
exclude all of the package's files[1].

This exports GIT_CEILING_DIRECTORIES for both package and host builds so
that git will not traverse beyond $(BUILD_DIR)/$(BUILD_DIR_HOST).

[1]: https://github.com/python-poetry/poetry/issues/5547

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
(cherry picked from commit f597f34f3a)
This commit is contained in:
Jeffery To 2023-05-31 21:58:34 +08:00 committed by Petr Štetiar
parent 5db2d6d009
commit b059aaf039
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GPG Key ID: 58EE120F30CC02D3
2 changed files with 2 additions and 0 deletions

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@ -131,6 +131,7 @@ define Host/Exports/Default
$(1) : export STAGING_PREFIX=$$(HOST_BUILD_PREFIX)
$(1) : export PKG_CONFIG_PATH=$$(STAGING_DIR_HOST)/lib/pkgconfig:$$(HOST_BUILD_PREFIX)/lib/pkgconfig
$(1) : export PKG_CONFIG_LIBDIR=$$(HOST_BUILD_PREFIX)/lib/pkgconfig
$(1) : export GIT_CEILING_DIRECTORIES=$$(BUILD_DIR_HOST)
$(if $(HOST_CONFIG_SITE),$(1) : export CONFIG_SITE:=$(HOST_CONFIG_SITE))
$(if $(IS_PACKAGE_BUILD),$(1) : export PATH=$$(TARGET_PATH_PKG))
endef

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@ -194,6 +194,7 @@ define Build/Exports/Default
$(1) : export CONFIG_SITE:=$$(CONFIG_SITE)
$(1) : export PKG_CONFIG_PATH:=$$(PKG_CONFIG_PATH)
$(1) : export PKG_CONFIG_LIBDIR:=$$(PKG_CONFIG_PATH)
$(1) : export GIT_CEILING_DIRECTORIES:=$$(BUILD_DIR)
endef
Build/Exports=$(Build/Exports/Default)