[Buildroot] [git commit] package/environment-setup: add better kernel handling
Arnout Vandecappelle (Essensium/Mind)
arnout at mind.be
Tue Dec 1 20:52:46 UTC 2020
commit: https://git.buildroot.net/buildroot/commit/?id=8a8a87345589adc1477e552c5b26c03988826ac0
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
Exporting ARCH and KERNELDIR makes easier to compile an external kernel
or out of tree kernel modules.
Signed-off-by: Angelo Compagnucci <angelo at amarulasolutions.com>
Reviewed-by: Matt Weber <matthew.weber at rockwellcollins.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
---
package/environment-setup/environment-setup | 1 +
package/environment-setup/environment-setup.mk | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/package/environment-setup/environment-setup b/package/environment-setup/environment-setup
index 813aa01c7a..e9bc36fdd0 100644
--- a/package/environment-setup/environment-setup
+++ b/package/environment-setup/environment-setup
@@ -10,6 +10,7 @@ cat <<'EOF'
Some tips:
* PATH now contains the SDK utilities
* Standard autotools variables (CC, LD, CFLAGS) are exported
+* Kernel compilation variables (ARCH, CROSS_COMPILE, KERNELDIR) are exported
* To configure do "./configure $CONFIGURE_FLAGS" or use
the "configure" alias
* To build CMake-based projects, use the "cmake" alias
diff --git a/package/environment-setup/environment-setup.mk b/package/environment-setup/environment-setup.mk
index fb87c6f0b7..fcad013f0d 100644
--- a/package/environment-setup/environment-setup.mk
+++ b/package/environment-setup/environment-setup.mk
@@ -11,6 +11,7 @@ define HOST_ENVIRONMENT_SETUP_INSTALL_CMDS
for var in $(TARGET_CONFIGURE_OPTS); do \
printf "export \"$$var\"\n" >> $(ENVIRONMENT_SETUP_FILE); \
done
+ printf "export \"ARCH=$(KERNEL_ARCH)\"\n" >> $(ENVIRONMENT_SETUP_FILE)
printf "export \"CROSS_COMPILE=$(TARGET_CROSS)\"\n" >> $(ENVIRONMENT_SETUP_FILE)
printf "export \"CONFIGURE_FLAGS=--target=$(GNU_TARGET_NAME) \
--host=$(GNU_TARGET_NAME) \
@@ -31,6 +32,10 @@ define HOST_ENVIRONMENT_SETUP_INSTALL_CMDS
$(ENVIRONMENT_SETUP_FILE)
printf "export \"PATH=\$$SDK_PATH/bin:\$$SDK_PATH/sbin:\$$PATH\"\n" \
>> $(ENVIRONMENT_SETUP_FILE)
+
+ $(if $(BR2_LINUX_KERNEL),\
+ printf "export \"KERNELDIR=$(LINUX_BUILDDIR)\"\n" \
+ >> $(ENVIRONMENT_SETUP_FILE),)
endef
$(eval $(host-generic-package))
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