u-boot.git/post/lib_powerpc/fpu, branch v2016.01

kbuild: post: fix dependency tracking correctly

2014-03-04T14:27:38+00:00

$(call if_changed,...) must take FORCE as a prerequite.

Signed-off-by: Masahiro Yamada 
Acked-by: Simon Glass

kbuild: use Linux Kernel build scripts

2014-02-19T16:07:50+00:00

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

2014-02-19T16:07:50+00:00

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

Makfile: move suffix rules to Makefile.build

2014-02-19T16:07:50+00:00

This commit moves suffix rules from config.mk
to scripts/Makefile.build, which will allow us
to switch smoothly to real Kbuild.

Note1:
post/lib_powerpc/fpu/Makefile has
its own rule to compile C sources.
We need to tweak it to keep the same behavior.

Note2:
There are two file2 with the same name:
arch/arm/lib/crt0.S and eamples/api/crt0.S.
To keep the same build behavior,
examples/api/Makefile also has to be treaked.

Signed-off-by: Masahiro Yamada

post: descend only when CONFIG_HAS_POST is defined

2013-12-13T14:17:33+00:00

All objects under post/ directory are enabled by CONFIG_HAS_POST.
(post/tests.o is enabled by CONFIG_POST_STD_LIST.
But CONFIG_POST_STD_LIST depends on CONFIG_HAS_POST.)

We can move CONFIG_HAS_POST switch to the top Makefile.

Signed-off-by: Masahiro Yamada

post: remove unnecessary include path settings

2013-11-25T15:41:53+00:00

Signed-off-by: Masahiro Yamada

post: convert makefiles to Kbuild style

2013-11-01T15:42:12+00:00

This commit also deletes post/rules.mk,
which in not necessary any more.

Signed-off-by: Masahiro Yamada

Add GPL-2.0+ SPDX-License-Identifier to source files

2013-07-24T13:44:38+00:00

Signed-off-by: Wolfgang Denk 
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini

PPC: fix "Warning: FOO uses hard float, BAR uses soft float".

2011-12-23T19:03:55+00:00

It appears that with recent versions of GCC the explicit
"-mhard-float" command line option takes precedence over the
``asm(".gnu_attribute 4, 2");'' in the source file, so this no longer
helps to avoid the warnings we get when linking code that uses FP
instructions with other code that was built using soft-float.

We can remove the ".gnu_attribute" (which appears to carry no other
information, at least so far) from the object files, but we also have
to make sure we don't pull in the __gcc_qsub() and __gcc_qmul()
functions from the standard libgcc, as these would again "infect" our
linking.  We copy this code from:
	gcc-4.2.2/gcc/config/rs6000/darwin-ldouble.c
This old version was chosen because it was still available under a
compatible license (GCC v2+).   The file was stripped down to the
needed parts, and reformatted so it passes checkpatch with only one
warning (do not add new typedefs).

Signed-off-by: Wolfgang Denk 
Cc: Kumar Gala 
Cc: Stefan Roese 
Cc: Andy Fleming 
Cc: Kim Phillips 
Tested-by: Stefan Roese 
Tested-by: Anatolij Gustschin

20001122-1.c: Fix GCC 4.6 build warning

2011-11-16T20:16:23+00:00

Fix:
20001122-1.c: In function 'fpu_post_test_math1':
20001122-1.c:37:22: warning: variable 'p' set but not used [-Wunused-but-set-variable]

Signed-off-by: Stefan Roese