Commit graph

79 commits

Author SHA1 Message Date
Tom Rini
4a30f1e874 config.mk: Check for -fstack-usage support
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Tom Rini <trini@ti.com>
2012-03-26 23:09:24 +02:00
Tom Rini
6f4acc179c config.mk: Make cc-option create a file under include/generated
Testing for -fstack-usage requires the creation of an output file, which
isn't possible with /dev/null.

Signed-off-by: Tom Rini <trini@ti.com>
2012-03-26 23:09:24 +02:00
Daniel Schwierzeck
b6a467d73d config.mk: use memoization in cc-option macro to speed up compilation
Apply memoization to cc-option macro by caching the results of the
gcc calls. This macro is called very often so using cached results
leads to faster compilation times.

The old behaviour can be restored by defining the config option
CONFIG_CC_OPT_CACHE_DISABLE=y.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2011-11-07 21:56:11 +01:00
Wolfgang Denk
cca4e4aec1 Reduce build times
U-Boot Makefiles contain a number of tests for compiler features etc.
which so far are executed again and again.  On some architectures
(especially ARM) this results in a large number of calls to gcc.

This patch makes sure to run such tests only once, thus largely
reducing the number of "execve" system calls.

Example: number of "execve" system calls for building the "P2020DS"
(Power Architecture) and "qong" (ARM) boards, measured as:
	-> strace -f -e trace=execve -o /tmp/foo ./MAKEALL <board>
	-> grep execve /tmp/foo | wc -l

	Before: After:	Reduction:
==================================
P2020DS 20555	15205	-26%
qong	31692	14490	-54%

As a result, built times are significantly reduced, typically by
30...50%.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Albert Aribaud <albert.aribaud@free.fr>
cc: Graeme Russ <graeme.russ@gmail.com>
cc: Mike Frysinger <vapier@gentoo.org>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Matthias Weisser <weisserm@arcor.de>
Tested-by: Sanjeev Premi <premi@ti.com>
Tested-by: Simon Glass <sjg@chromium.org>
Tested-by: Macpaul Lin <macpaul@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-11-03 20:44:58 +01:00
Simon Glass
bbb0b128c3 fdt: Add support for embedded device tree (CONFIG_OF_EMBED)
This new option allows U-Boot to embed a binary device tree into its image
to allow run-time control of peripherals. This device tree is for U-Boot's
own use and is not necessarily the same one as is passed to the kernel.

The device tree compiler output should be placed in the $(obj)
rooted tree. Since $(OBJCOPY) insists on adding the path to the
generated symbol names, to ensure consistency it should be
invoked from the directory where the .dtb file is located and
given the input file name without the path.

This commit contains my entry for the ugliest Makefile / shell interaction
competition.

Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-26 21:38:59 +02:00
Mike Frysinger
5968adc414 build: force migration away from $(AR)
People keep adding new code that still uses $(AR) instead of
$(cmd_link_o_target), so turn it into a build time error.

We still use $(AR) locally, but we don't use $(ARFLAGS).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-22 01:19:28 +02:00
Simon Glass
4750884306 Adjust dependency rules to permit per-file flags
The dependency rules are currently done in a shell 'for' loop. This does not
permit Makefile variables to adjust preprocessor flags as is done with normal
compile flags, using the CFLAGS_path/file.o syntax.

This change moves the dependency generation into the Makefile itself, and
permits a CPPFLAGS_path/file.o to adjust preprocessor flags on a file or
directory basis.

The CPPFLAGS_... variable is also folded into CFLAGS during the build.

Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-17 23:56:59 +02:00
Mike Frysinger
6262e4e74e disable security warning flags when possible
Some toolchains enable security warning flags by default, but these don't
really make sense in the u-boot world.  Such as forcing changes like:
	-printf(foo);
	+printf("%s", foo);

So disable the flags when the compiler supports them.  Linux has already
merged a similar change in their build system.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-26 16:35:50 +02:00
Daniel Schwierzeck
c8f9c302c2 Extend build-system for SPL framework
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2011-07-26 14:42:40 +02:00
Ilya Yanok
d51dfff7af config.mk: move LDSCRIPT processing to the top-level Makefile
LDSCRIPT is used only from the top-level Makefile and only when the
system is configured so we can move LDSCRIPT and CONFIG_SYS_LDSCRIPT
related logic into the top level Makefile and under configured condition
to avoid errors when building tools from unconfigured tree.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-06-22 20:03:01 +02:00
Scott Wood
83b7e2a7f2 Handle most LDSCRIPT setting centrally
Currently, some linker scripts are found by common code in config.mk.
Some are found using CONFIG_SYS_LDSCRIPT, but the code for that is
sometimes in arch config.mk and sometimes in board config.mk.  Some
are found using an arch-specific rule for looking in CPUDIR, etc.

Further, the powerpc config.mk rule relied on CONFIG_NAND_SPL
when it really wanted CONFIG_NAND_U_BOOT -- which covered up the fact
that not all NAND_U_BOOT builds actually wanted CPUDIR/u-boot-nand.lds.

Replace all of this -- except for a handful of boards that are actually
selecting a linker script in a unique way -- with centralized ldscript
finding.

If board code specifies LDSCRIPT, that will be used.
Otherwise, if CONFIG_SYS_LDSCRIPT is specified, that will be used.

If neither of these are specified, then the central config.mk will
check for the existence of the following, in order:

$(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/$(CPUDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
$(TOPDIR)/$(CPUDIR)/u-boot.lds

Some boards (sc3, cm5200, munices) provided their own u-boot.lds that
were dead code, because they were overridden by a CPUDIR u-boot.lds under
the old powerpc rules.  These boards' own u-boot.lds have bitrotted and
no longer work -- these lds files have been removed.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-30 00:59:47 +02:00
Haiying Wang
6dc1eceb9c Introduce a new linker flag LDFLAGS_FINAL
commit 8aba9dceeb
Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGS

breaks the usage of --gc-section to build nand_spl. We still need linker option
--gc-section for every uboot image, not only the main one. LDFLAGS_FINAL passes
the --gc-sections to each uboot image.

To get the proper linker flags, we use LDFLAGS and LDFLAGS_FINAL to replace
PLATFORM_LDFLAGS in the Makefile of each nand_spl board.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
2011-03-22 23:32:06 +01:00
Joakim Tjernlund
5e987ddf85 Top config.mk: add include/config.mk
Seems to me that the top level config.mk should include
the auto generated include/config.mk so that all Makefile's
pickup those definitions.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2011-03-21 22:56:56 +01:00
Nobuhiro Iwamatsu
8aba9dceeb Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGS
Linker needs to use the proper endian/bfd flags even when doing partial linking.
LDFLAGS_u-boot sets linker option which is called it when U-boot is built
(u-boot final).
LDFLAGS sets necessary option by partial linking (use in cmd_link_o_target).

CC: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-01-25 22:22:30 +01:00
Mike Frysinger
326a694527 config.mk: unify duplicated flag setting
Multiple rules are using the expanded AFLAGS/CFLAGS settings and some are
getting so long that the rules need to be line wrapped.  So unify them in
one variable, use that variable in the rule, and then unwrap things.  This
makes the actual `make` output nicer as it doesn't have line continuations
in it anymore.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-12-17 21:19:37 +01:00
Wolfgang Denk
844f07d8a1 Coding Style (white space) cleanup
Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-11-27 23:35:14 +01:00
Sebastien Carlier
6d8962e814 Switch from archive libraries to partial linking
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 <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00
Wolfgang Denk
14d0a02a16 Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE
The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 22:07:10 +02:00
Mike Frysinger
f534c7cdc6 config.mk: avoid -traditional-cpp on OS X 10.5
Simply trying to include a basic header file like stdlib.h on OS X 10.5
and then building with -traditional-cpp fails with lots of errors like:
In file included from /usr/include/stdlib.h:63,
                 from test.c:3:
/usr/include/available.h:85: error: stray '#' in program
/usr/include/available.h:85: error: syntax error before numeric constant
/usr/include/available.h:86: error: stray '#' in program

In the past, I hadn't noticed because the old logic for these flags were
restricted to Darwin running on PowerPC systems while I'm running on an
Intel system.  But after some recent clean ups and changes, the flag was
being applied to all Darwin systems and my host tools broke.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-08-09 01:11:58 +02:00
Thomas Chou
1117cbf2ad nios: remove nios-32 arch
The nios-32 arch is obsolete and broken. So it is removed.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2010-05-28 10:56:04 -04:00
Andreas Biessmann
c7da8c19b5 config.mk: use different host compiler for OS X 10.6
Compiling tools subdirectory on Mac OS X 10.6 (Snow Leopard) complains about
wrong syntax in system includes.

In file included from /usr/include/stdio.h:444,
                 from ../source/u-boot/include/compiler.h:26,
                 from ../source/u-boot/lib/crc32.c:15:
/usr/include/secure/_stdio.h:46: error: syntax error in macro parameter list

This can be fixed by reverting the workaround for prior OS X releases in
config.mk conditionally for OS X 10.6+.

Signed-off-by: Andreas Biemann <andreas.devel@googlemail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2010-05-26 22:31:55 +02:00
Peter Tyser
8d1f268204 ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:16 +02:00
Peter Tyser
ea0364f1bb Move lib_$ARCH directories to arch/$ARCH/lib
Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk

This change is intended to clean up the top-level directory structure
and more closely mimic Linux's directory organization.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:03 +02:00
Peter Tyser
89f39e177e Change directory-specific CFLAGS to use full path
Previously, a specific file or directory could be compiled with custom
CFLAGS by adding a Makefile variable such as:
  CFLAGS_dlmalloc.o = <custom flags for common/dlmalloc.c>
or
  CFLAGS_lib = <custom flags for lib directory>

This method breaks down once multiple files or directories share the
same path.  Eg FLAGS_fileA = <custom flags> would incorrectly result in
both dir1/fileA.c and dir2/fileA.c being compiled with <custom flags>.

This change allows finer grained control which we need once we move
lib_$ARCH to arch/$ARCH/lib/ and lib_generic/ to lib/.  Without this
change all lib/ directories would share the same custom CFLAGS.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:00 +02:00
Peter Tyser
03b7004dda Create CPUDIR variable
The CPUDIR variable points to the location of a target's CPU directory.
Currently, it is set to cpu/$CPU.  However, using $CPUDIR will allow for
more flexibility in the future.  It lays the groundwork for reorganizing
U-Boot's directory structure to support a layout such as:

  arch/$ARCH/cpu/$CPU/* (architecture with multiple CPU types)
  arch/$ARCH/cpu/*      (architecture with one CPU type)

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:12:59 +02:00
Scott Wood
d984fed068 makefiles: fixes for building build tools
Currently, some of the tools instead set CC to be HOSTCC in order to re-use
some pattern rules -- but this fails when the user overrides CC on the make
command line.  Also, the HOSTCFLAGS in tools/Makefile are currently not
being used because config.mk overwrites them.

This patch adds static pattern rules for files that have been requested to
be built with the native compiler using $(HOSTSRCS) and $(HOSTOBJS), and
converts the tools to use them.

It restores easylogo to using the host compiler, which was broken by commit
38d299c2db (if this was an intentional change,
please let me know -- but it seems to be a build tool).

It restores -pedantic and the special flags for darwin and cygwin that were
requested in tools/makefile (but keeps the flags added by config.mk) --
hopefully someone can test this on those platforms.  It no longer
conditionalizes -pedantic on not being darwin; it wasn't clear that that was
intentional, and unless there's a real problem it's just inviting people to
contribute non-pedantic patches to those files (I'm not a fan of -pedantic
personally, but if it's on for one platform it should be on for all).

HOST_LDFLAGS is renamed HOSTLDFLAGS for consistency with the previous
HOST_CFLAGS to HOSTCFLAGS rename.  A new HOSTCFLAGS_NOPED is made available
for those files which currently cannot be built with -pedantic, and replaces
the old FIT_CFLAGS.

imls now uses the cross compiler properly, rather than by trying to
reconstruct CC using the typoed $(CROSS_COMPILER).

envcrc.c is now dependency-processed unconditionally -- previously it would
be built without being on (HOST)SRCS if CONFIG_ENV_IS_EMBEDDED was not
selected.

Signed-off-by: Scott Wood <scottwood@freescale.com>
2009-12-02 22:58:46 +01:00
Kumar Gala
6c97a20d0b ppc/85xx: Introduce RESET_VECTOR_ADDRESS to handle non-standard link address
Some board ports place TEXT_BASE at a location that would cause the
RESET_VECTOR_ADDRESS not to be at 0xfffffffc when we link.  By default
we assume RESET_VECTOR_ADDRESS will be 0xfffffffc if the board doesn't
explicitly set it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Wolfgang Denk <wd@denx.de>
2009-09-09 21:04:47 -05:00
Mike Frysinger
6ac9f47977 start a linker script helper file
Start a common header file for common linker script code (such as
workarounds for older linkers) rather than doing this in the build system.

As fallout, we no longer execute the linker every time config.mk is
included by a build file (which can easily be 70+ times), but rather only
execute it once.

This also fixes a bug in the major version checking by creating a macro to
easily compare versions and keep people from making the same common
mistake (forgetting to check major and minor together).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-08-23 22:33:33 +02:00
Wolfgang Denk
1aada9cd64 Fix all linker scripts for older binutils versions (pre-2.16)
Commit f62fb99941 fixed handling of all rodata sections by using a
wildcard combined with calls to ld's builtin functions SORT_BY_ALIGNMENT()
and SORT_BY_NAME().  Unfortunately these functions were only
introduced with biunutils version 2.16, so the modification broke
building with all tool chains using older binutils.

This patch makes it work again.  This is done by omitting the use of
these functions for such old tool chains.  This will result in
slightly larger target binaries, as the rodata sections are no longer
in optimal order alignment-wise which reauls in unused gaps, but the
effect was found to be insignificant - especially compared to the fact
that you cannot build U-Boot at all in the current state.

As ld seems to have no support for conditionals we run the linker
script through the C preprocessor which can be easily used to remove
the unwanted function calls.

Note that the C preprocessor must be run with the "-ansi" (or a
"-std=") option to make sure all the system-specific predefined
macros outside the reserved namespace are suppressed. Otherise, cpp
might for example substitute "powerpc" to "1", thus corrupting for
example "OUTPUT_ARCH(powerpc)" etc.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
2009-08-21 23:13:34 +02:00
Wolfgang Denk
f772acf8a5 ARM: compiler options cleanup - improve tool chain support
For some time there have been repeated reports about build problems
with some ARM (cross) tool chains.  Especially issues about
(in)compatibility with the tool chain provided runtime support
library libgcc.a caused to add and support a private implementation
of such runtime support code in U-Boot.  A closer look at the code
indicated that some of these issues are actually home-made.  This
patch attempts to clean up some of the most obvious problems and make
building of U-Boot with different tool chains easier:

- Even though all ARM systems basicy used the same compiler options
  to select a specific ABI from the tool chain, the code for this was
  distributed over all cpu/*/config.mk files.  We move this one level
  up into lib_arm/config.mk instead.

- So far, we only checked if "-mapcs-32" was supported by the tool
  chain; if yes, this was used, if not, "-mabi=apcs-gnu" was
  selected, no matter if the tool chain actually understood this
  option.  There was no support for EABI conformant tool chains.
  This patch implements the following logic:

  1) If the tool chain supports
	"-mabi=aapcs-linux -mno-thumb-interwork"
     we use these options (EABI conformant tool chain).
  2) Otherwise, we check first if
	"-mapcs-32"
     is supported, and then check for
	"-mabi=apcs-gnu"
     If one test succeeds, we use the first found option.
  3) In case 2), we also test if "-mno-thumb-interwork", and use
     this if the test succeeds. [For "-mabi=aapcs-linux" we set
     "-mno-thumb-interwork" mandatorily.]

  This way we use a similar logic for the compile options as the
  Linux kernel does.

- Some EABI conformant tool chains cause external references to
  utility functions like raise(); such functions are provided in the
  new file lib_arm/eabi_compat.c

  Note that lib_arm/config.mk gets parsed several times, so we must
  make sure to add eabi_compat.o only once to the linker list.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Dirk Behme <dirk.behme@googlemail.com>
Cc: Magnus Lilja <lilja.magnus@gmail.com>
Cc: Tom Rix <Tom.Rix@windriver.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Sergey Kubushyn <ksi@koi8.net>
Tested-by: Magnus Lilja <lilja.magnus@gmail.com>
Tested-by: Andrzej Wolski <awolski@poczta.fm>
Tested-by: Gaye Abdoulaye Walsimou <walsimou@walsimou.com>
Tested-by: Tom Rix <Tom.Rix@windriver.com>
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-08-21 23:11:53 +02:00
Peter Tyser
b220c64d86 Move architecture specific config.mk files into subdirs
This cleans up U-Boot's toplevel directory a bit and makes the
architecture 'config.mk' file naming and location similar to board
and cpu 'config.mk' files

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-07-21 00:12:35 +02:00
Shinya Kuribayashi
cff80f2cd1 config.mk: Remove unused HPATH
This variable is not unused anywhere.

Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
2009-07-19 21:50:59 +02:00
Shinya Kuribayashi
12e9043c7e config.mk: Remove $(PCI_CLOCK) reference
The following commit introduced $(PCI_CLOCK) reference so that
we could tweak `PCI_66M' definition via an environment variable.

> commit f046ccd15c
> Author: Eran Liberty <liberty@freescale.com>
> Date:   Thu Jul 28 10:08:46 2005 -0500
>
>     * Patch by Eran Liberty
>       Add support for the Freescale MPC8349ADS board.

But I suggest a removal of it for the following reasons:

* In 2006, MPC8349ADS was merged into MPC8349EMDS port,
  and it seems that MPC8349EMDS port is PCI_66M free.

* OTOH, PCI_66M is used by MPC832XEMDS an MPC8360EMDS ports,
  but they don't need $(PCI_CLOCK) environment variable at all.
  PCI_66M is automatically configured via $(BOARD)_config names
  with the help of $(findstring _66_,$@).

* Unfortunately $(PCI_CLOCK) has been undocumented anywhere,
  so only a few people know the existence of it these days.

* Keep config.mk independent from $(BOARD) as much as possible.

Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
2009-07-17 21:36:35 +02:00
Mike Frysinger
31f30c9eb6 add %.c->%.i and %.c->%.s rules
The Linux kernel has some helper rules which allow you to quickly produce
some of the intermediary files from C source.  Specifically, you can
create .i files which is the preprocessed output and you can create .s
files which is the assembler output.  This is useful when you are trying
to track down header/macro expansion errors or inline assembly errors.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-14 23:36:47 +02:00
Mike Frysinger
5ec5529b82 allow boards to customize compiler options on a per-file/dir basis
With our Blackfin boards, we like to build the compression routines with
-O2 as our tests show a pretty good size/speed tradeoff.  For the rest of
U-Boot though, we want to stick with the default -Os as that is mostly
control code.  So in our case, we would add a line like so to the board
specific config.mk file:
	CFLAGS_lib_generic += -O2

Now all files under lib_generic/ will have -O2 appended to their build.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-14 22:44:24 +02:00
Jean-Christophe PLAGNIOL-VILLARD
3112030a43 config.mk: remove un-needed REMOTE_BUILD check
as $(obj) is empty when in tree build

%.s:	%.S
	$(CPP) $(AFLAGS) -o $@ $<

and

$(obj)%.s:	%.S
	$(CPP) $(AFLAGS) -o $@ $<

are the same

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 20:45:48 +02:00
Mike Frysinger
4cda437898 build system: treat all Darwin's alike
The x86 based version of Darwin behaves the same quirky way as the powerpc
Darwin, so only check HOSTOS when setting up Darwin workarounds.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-18 21:08:45 +01:00
Peter Tyser
434c51a5e6 Remove unneeded CONFIG_SHELL references
Make should be using the bash shell by default which makes
CONFIG_SHELL unnecessary

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2008-12-08 23:18:23 +01:00
Shinya Kuribayashi
03db53335c make: Remove redundant __ARM__ addition when cross-compiling on *BSD
__ARM__ is given by arm_config.mk automatically.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
2008-09-12 02:20:46 +02:00
Shinya Kuribayashi
6b971c73f1 config.mk: Move arch-specific condition to $(ARCH)_config.mk
Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
2008-09-07 00:33:27 +02:00
Haavard Skinnemoen
28eab0d773 Conditionally add -fno-stack-protector to CFLAGS
When compile-testing on powerpc, I get errors like this:

net/nfs.c:422: undefined reference to `__stack_chk_fail_local'

This seems to be because -fstack-protector is on by default, so
let's explicitly disable it on all architectures that support the
option.

The Ubuntu toolchain is affected by this problem, and according to
Mike Frysinger, Gentoo has been running with SSP enabled for years.
More and more distros are turning SSP on by default, so this problem
is likely to get worse in the future.

Also, powerpc just happens to be one of the arches I do
compile-testing on. There may be other arches affected by this too.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-06-26 19:46:02 +02:00
Wolfgang Denk
53677ef18e Big white-space cleanup.
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).

Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-21 00:14:08 +02:00
Wolfgang Denk
c4e5f52a58 config.mk: use correct (cross) compiler
Some config.mk files reference $(CC) to test for specific tool chain
features, so make sure $(CC) gets set before including any such
config files.

This patch replaces commit b7166e05a5 ("ColdFire: Get information from
the correct GCC").

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-03 23:06:59 +02:00
Mike Frysinger
755c35f54b include autoconf.mk before any other .mk files
This bumps the autoconf.mk include step above board/cpu/arch/etc... so that
those .mk files can have make if statements based on the current config.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2008-02-22 12:34:27 +01:00
Wolfgang Denk
6f99eec3dc Merge branch 'master' of git://www.denx.de/git/u-boot-blackfin
Conflicts:

	Makefile
	doc/README.standalone

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-02-15 00:06:18 +01:00
Mike Frysinger
161b2af4d7 Only use TEXT_BASE if defined by the board
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2008-02-14 01:12:45 +01:00
Mike Frysinger
94a91e248b generate u-boot.ldr for Blackfin targets
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2008-02-04 19:26:57 -05:00
Grant Likely
2f155f6c0a [BUILD] Generate include/autoconf.mk from board config files
Use cpp and sed to postprocess config.h and import the defined values
into include/autoconf.mk.  autoconf.mk is then included by config.mk to
give 'make' access to the board configuration.

Doing this enables conditional compilation at the Makefile level instead
of by wrapping every .c file with #ifdef/#endif wrappers.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2007-11-20 22:33:38 -07:00
Shinya Kuribayashi
ad845beef0 blackfin: Move `-D__BLACKFIN__' to $(ARCH)_config.mk
Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
2007-11-03 22:47:13 +01:00
Aubrey.Li
ef26a08fef [Blackfin][PATCH-2/2] Common files changed to support bf533 platform 2007-03-09 13:40:56 +08:00