initial buildroot for linux 5.15

package/environment-setup/environment-setup.mk

@@ -0,0 +1,41 @@
+################################################################################
+#
+# environment-setup
+#
+################################################################################
+
+ENVIRONMENT_SETUP_FILE = $(HOST_DIR)/environment-setup
+
+define HOST_ENVIRONMENT_SETUP_INSTALL_CMDS
+	cp package/environment-setup/environment-setup $(ENVIRONMENT_SETUP_FILE)
+	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=$(GNU_TARGET_NAME) \
+		--build=$(GNU_HOST_NAME) \
+		--prefix=/usr \
+		--exec-prefix=/usr \
+		--sysconfdir=/etc \
+		--localstatedir=/var \
+		--program-prefix=\"\n" >> $(ENVIRONMENT_SETUP_FILE)
+	printf "alias configure=\"./configure \$${CONFIGURE_FLAGS}\"\n" \
+		>> $(ENVIRONMENT_SETUP_FILE)
+	printf "alias cmake=\"cmake \
+		-DCMAKE_TOOLCHAIN_FILE=$(HOST_DIR)/share/buildroot/toolchainfile.cmake \
+		-DCMAKE_INSTALL_PREFIX=/usr\"\n" >> $(ENVIRONMENT_SETUP_FILE)
+	$(SED) 's%$(HOST_DIR)/bin/%%g' \
+		-e 's%$(HOST_DIR)%\$$SDK_PATH%g' \
+		-e '/^export "PATH=/c\' \
+		$(ENVIRONMENT_SETUP_FILE)
+	printf "export \"PATH=\$$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))