9e4140329e
This commit changes the working directory where the build process occurs. Before this commit, build process occurred under the source tree for both in-tree and out-of-tree build. That's why we needed to add $(obj) prefix to all generated files in makefiles like follows: $(obj)u-boot.bin: $(obj)u-boot Here, $(obj) is empty for in-tree build, whereas it points to the output directory for out-of-tree build. And our old build system changes the current working directory with "make -C <sub-dir>" syntax when descending into the sub-directories. On the other hand, Kbuild uses a different idea to handle out-of-tree build and directory descending. The build process of Kbuild always occurs under the output tree. When "O=dir/to/store/output/files" is given, the build system changes the current working directory to that directory and restarts the make. Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>" syntax for descending into sub-directories. (We can write it like "make $(obj)=<sub-dir>" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de>
71 lines
1.7 KiB
Makefile
71 lines
1.7 KiB
Makefile
#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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ifndef CONFIG_SPL_BUILD
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obj-$(CONFIG_RSA) += rsa/
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obj-$(CONFIG_LZMA) += lzma/
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obj-$(CONFIG_LZO) += lzo/
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obj-$(CONFIG_ZLIB) += zlib/
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obj-$(CONFIG_TIZEN) += tizen/
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obj-$(CONFIG_AES) += aes.o
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obj-$(CONFIG_BZIP2) += bzlib.o
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obj-$(CONFIG_BZIP2) += bzlib_crctable.o
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obj-$(CONFIG_BZIP2) += bzlib_decompress.o
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obj-$(CONFIG_BZIP2) += bzlib_randtable.o
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obj-$(CONFIG_BZIP2) += bzlib_huffman.o
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obj-$(CONFIG_USB_TTY) += circbuf.o
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obj-y += crc7.o
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obj-y += crc8.o
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obj-y += crc16.o
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obj-$(CONFIG_OF_CONTROL) += fdtdec.o
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obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
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obj-$(CONFIG_GZIP) += gunzip.o
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obj-$(CONFIG_GZIP_COMPRESSED) += gzip.o
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obj-y += initcall.o
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obj-$(CONFIG_LMB) += lmb.o
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obj-y += ldiv.o
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obj-$(CONFIG_MD5) += md5.o
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obj-y += net_utils.o
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obj-$(CONFIG_PHYSMEM) += physmem.o
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obj-y += qsort.o
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obj-$(CONFIG_SHA1) += sha1.o
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obj-$(CONFIG_SHA256) += sha256.o
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obj-y += strmhz.o
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obj-$(CONFIG_TPM) += tpm.o
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obj-$(CONFIG_RBTREE) += rbtree.o
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obj-$(CONFIG_BITREVERSE) += bitrev.o
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endif
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ifdef CONFIG_SPL_BUILD
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obj-$(CONFIG_SPL_YMODEM_SUPPORT) += crc16.o
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obj-$(CONFIG_SPL_NET_SUPPORT) += net_utils.o
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endif
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obj-$(CONFIG_ADDR_MAP) += addr_map.o
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obj-y += hashtable.o
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obj-y += errno.o
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obj-y += display_options.o
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obj-$(CONFIG_BCH) += bch.o
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obj-y += crc32.o
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obj-y += ctype.o
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obj-y += div64.o
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obj-y += hang.o
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obj-y += linux_string.o
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obj-$(CONFIG_REGEX) += slre.o
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obj-y += string.o
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obj-y += time.o
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obj-$(CONFIG_TRACE) += trace.o
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obj-$(CONFIG_BOOTP_PXE) += uuid.o
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obj-y += vsprintf.o
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obj-$(CONFIG_RANDOM_MACADDR) += rand.o
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obj-$(CONFIG_BOOTP_RANDOM_DELAY) += rand.o
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obj-$(CONFIG_CMD_LINK_LOCAL) += rand.o
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# SEE README.arm-unaligned-accesses
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$(obj)/bzlib.o: CFLAGS += $(PLATFORM_NO_UNALIGNED)
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