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package/environment-setup: add better kernel handling

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Exporting ARCH and KERNELDIR makes easier to compile an external kernel
or out of tree kernel modules.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Reviewed-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Angelo Compagnucci 2020-11-09 17:58:03 +01:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 1e66d99610
commit 8a8a873455
2 changed files with 6 additions and 0 deletions
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1
package/environment-setup/environment-setup
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@ -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

5
package/environment-setup/environment-setup.mk
View File

@ -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))