u-boot.git/drivers/bios_emulator/Makefile, branch v2014.04

kbuild: use Linux Kernel build scripts

2014-02-19T16:07:50Z

Now we are ready to switch over to real Kbuild. This commit disables temporary scripts: scripts/{Makefile.build.tmp, Makefile.host.tmp} and enables real Kbuild scripts: scripts/{Makefile.build,Makefile.host,Makefile.lib}. This switch is triggered by the line in scripts/Kbuild.include -build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj +build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj We need to adjust some build scripts for U-Boot. But smaller amount of modification is preferable. Additionally, we need to fix compiler flags which are locally added or removed. In Kbuild, it is not allowed to change CFLAGS locally. Instead, ccflags-y, asflags-y, cppflags-y, CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o are prepared for that purpose. Signed-off-by: Masahiro Yamada Tested-by: Gerhard Sittig

kbuild: change out-of-tree build

2014-02-19T16:07:50Z

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 " 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=" syntax for descending into sub-directories. (We can write it like "make $(obj)=" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada Tested-by: Gerhard Sittig

bios_emulator: delete an unnecessary include path

2013-11-25T15:41:54Z

-I$(TOPDIR)/include is defined in the top config.mk. Signed-off-by: Masahiro Yamada

drivers: delete unnecessary HOSTCFLAGS

2013-11-25T15:41:54Z

HOSTCFLAGS is meaningless because no host programs are compiled there. Signed-off-by: Masahiro Yamada

Makefile: make directories by Makefile.build

2013-11-17T19:11:31Z

Signed-off-by: Masahiro Yamada

drivers: descend into sub directories only when it is necessary

2013-11-17T19:11:30Z

- Descend into drivers/fpga/ only when CONFIG_FPGA=y - Descend into drivers/bios_emulator only when CONFIG_BIOSEMU=y Signed-off-by: Masahiro Yamada

drivers: convert makefiles to Kbuild style

2013-10-31T17:26:01Z

Signed-off-by: Masahiro Yamada

Switch from archive libraries to partial linking

2010-11-17T20:02:18Z

Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier

drivers/bios_emulator: Fix compile error in .depend not being generated

2009-12-17T21:24:36Z

make -C drivers/bios_emulator/ make[2]: Entering directory `drivers/bios_emulator' In file included from atibios.c:49: biosemui.h:47:21: error: biosemu.h: No such file or directory ... x86emu/decode.c:40:28: error: x86emu/x86emui.h: No such file or directory ... Due to lack of proper CPPFLAGS being passed to .depend generation rule Signed-off-by: Kumar Gala

unify HOST_CFLAGS and HOSTCFLAGS

2009-07-23T19:26:14Z

The top build system sets up HOSTCFLAGS a bit and exports it, but other places use HOST_CFLAGS instead. Unify the two as HOSTCFLAGS so that the values stay in sync. Signed-off-by: Mike Frysinger