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Reduce build times

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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>
master
Wolfgang Denk 13 years ago
parent 4d6402b012
commit cca4e4aec1
25 changed files with 67 additions and 43 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 2
      Makefile
  2. 19
      arch/arm/config.mk
  3. 3
      arch/arm/cpu/arm1136/config.mk
  4. 4
      arch/arm/cpu/arm1176/config.mk
  5. 4
      arch/arm/cpu/arm1176/s3c64xx/config.mk
  6. 4
      arch/arm/cpu/arm720t/config.mk
  7. 3
      arch/arm/cpu/arm920t/config.mk
  8. 3
      arch/arm/cpu/arm925t/config.mk
  9. 3
      arch/arm/cpu/arm926ejs/at91/config.mk
  10. 3
      arch/arm/cpu/arm926ejs/config.mk
  11. 3
      arch/arm/cpu/arm946es/config.mk
  12. 3
      arch/arm/cpu/arm_intcm/config.mk
  13. 4
      arch/arm/cpu/armv7/config.mk
  14. 5
      arch/arm/cpu/armv7/omap-common/config.mk
  15. 3
      arch/arm/cpu/ixp/config.mk
  16. 3
      arch/arm/cpu/lh7a40x/config.mk
  17. 3
      arch/arm/cpu/pxa/config.mk
  18. 3
      arch/arm/cpu/s3c44b0/config.mk
  19. 3
      arch/arm/cpu/sa1100/config.mk
  20. 3
      arch/powerpc/cpu/mpc824x/Makefile
  21. 5
      arch/powerpc/cpu/mpc85xx/config.mk
  22. 10
      arch/x86/config.mk
  23. 3
      board/siemens/SCM/Makefile
  24. 8
      config.mk
  25. 3
      examples/standalone/Makefile

2
Makefile
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@ -320,7 +320,7 @@ else
PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
endif
else
PLATFORM_LIBGCC = -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
endif
PLATFORM_LIBS += $(PLATFORM_LIBGCC)
export PLATFORM_LIBS

19
arch/arm/config.mk
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@ -34,7 +34,7 @@ endif
PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
PLATFORM_CPPFLAGS += $(call cc-option,-marm,)
PF_CPPFLAGS_ARM := $(call cc-option,-marm,)
# Try if EABI is supported, else fall back to old API,
# i. e. for example:
@ -44,15 +44,16 @@ PLATFORM_CPPFLAGS += $(call cc-option,-marm,)
# -mabi=apcs-gnu -mno-thumb-interwork
# - with ELDK 3.1 (gcc 3.x), use:
# -mapcs-32 -mno-thumb-interwork
PLATFORM_CPPFLAGS += $(call cc-option,\
-mabi=aapcs-linux -mno-thumb-interwork,\
PF_CPPFLAGS_ABI := $(call cc-option,\
-mabi=aapcs-linux -mno-thumb-interwork,\
$(call cc-option,\
-mapcs-32,\
$(call cc-option,\
-mapcs-32,\
$(call cc-option,\
-mabi=apcs-gnu,\
)\
) $(call cc-option,-mno-thumb-interwork,)\
)
-mabi=apcs-gnu,\
)\
) $(call cc-option,-mno-thumb-interwork,)\
)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
# For EABI, make sure to provide raise()
ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))

3
arch/arm/cpu/arm1136/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv5
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

4
arch/arm/cpu/arm1176/config.mk
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@ -29,4 +29,6 @@ PLATFORM_CPPFLAGS += -march=armv5t
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

4
arch/arm/cpu/arm1176/s3c64xx/config.mk
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@ -29,4 +29,6 @@ PLATFORM_CPPFLAGS += -march=armv5t
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

4
arch/arm/cpu/arm720t/config.mk
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@ -30,4 +30,6 @@ PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/arm920t/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv4
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/arm925t/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv4
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/arm926ejs/at91/config.mk
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@ -1 +1,2 @@
PLATFORM_CPPFLAGS += $(call cc-option,-mtune=arm926ejs,)
PF_CPPFLAGS_TUNE := $(call cc-option,-mtune=arm926ejs,)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_TUNE)

3
arch/arm/cpu/arm926ejs/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv5te
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/arm946es/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv4
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/arm_intcm/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv4
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

4
arch/arm/cpu/armv7/config.mk
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@ -29,5 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv5
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

5
arch/arm/cpu/armv7/omap-common/config.mk
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@ -29,5 +29,6 @@ PLATFORM_CPPFLAGS += -march=armv5
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,\
$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/ixp/config.mk
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@ -37,4 +37,5 @@ LDFLAGS_u-boot += --gc-sections
# Supply options according to compiler version
#
# =========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/lh7a40x/config.mk
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@ -29,4 +29,5 @@ PLATFORM_CPPFLAGS += -march=armv4
# Supply options according to compiler version
#
# ========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/pxa/config.mk
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@ -30,4 +30,5 @@ PLATFORM_CPPFLAGS += -march=armv5te -mtune=xscale
# Supply options according to compiler version
#
# ========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/s3c44b0/config.mk
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@ -30,4 +30,5 @@ PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi -msoft-float
# Supply options according to compiler version
#
# ========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/arm/cpu/sa1100/config.mk
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@ -30,4 +30,5 @@ PLATFORM_CPPFLAGS += -march=armv4 -mtune=strongarm1100
# Supply options according to compiler version
#
# ========================================================================
PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)

3
arch/powerpc/cpu/mpc824x/Makefile
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@ -23,8 +23,7 @@
include $(TOPDIR)/config.mk
ifneq ($(OBJTREE),$(SRCTREE))
$(shell mkdir -p $(obj)drivers/epic)
$(shell mkdir -p $(obj)drivers/i2c)
$(shell mkdir -p $(obj)drivers/epic $(obj)drivers/i2c)
endif
LIB = $(obj)lib$(CPU).o

5
arch/powerpc/cpu/mpc85xx/config.mk
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@ -28,5 +28,6 @@ PLATFORM_CPPFLAGS += -ffixed-r2 -Wa,-me500 -msoft-float -mno-string
# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;
# see "[PATCH,rs6000] make -mno-spe work as expected" on
# http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html
PLATFORM_CPPFLAGS +=$(call cc-option,-mspe=yes)
PLATFORM_CPPFLAGS +=$(call cc-option,-mno-spe)
PF_CPPFLAGS_SPE := $(call cc-option,-mspe=yes) \
$(call cc-option,-mno-spe)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_SPE)

10
arch/x86/config.mk
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@ -27,10 +27,12 @@ PLATFORM_CPPFLAGS += -fno-strict-aliasing
PLATFORM_CPPFLAGS += -Wstrict-prototypes
PLATFORM_CPPFLAGS += -mregparm=3
PLATFORM_CPPFLAGS += -fomit-frame-pointer
PLATFORM_CPPFLAGS += $(call cc-option, -ffreestanding)
PLATFORM_CPPFLAGS += $(call cc-option, -fno-toplevel-reorder, $(call cc-option, -fno-unit-at-a-time))
PLATFORM_CPPFLAGS += $(call cc-option, -fno-stack-protector)
PLATFORM_CPPFLAGS += $(call cc-option, -mpreferred-stack-boundary=2)
PF_CPPFLAGS_X86 := $(call cc-option, -ffreestanding) \
$(call cc-option, -fno-toplevel-reorder, \
$(call cc-option, -fno-unit-at-a-time)) \
$(call cc-option, -fno-stack-protector) \
$(call cc-option, -mpreferred-stack-boundary=2)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0

3
board/siemens/SCM/Makefile
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@ -24,8 +24,7 @@
include $(TOPDIR)/config.mk
ifneq ($(OBJTREE),$(SRCTREE))
$(shell mkdir -p $(obj)../common)
$(shell mkdir -p $(obj)../../tqc/tqm8xx)
$(shell mkdir -p $(obj)../common $(obj)../../tqc/tqm8xx)
endif
LIB = $(obj)lib$(BOARD).o

8
config.mk
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@ -209,11 +209,13 @@ else
CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
endif
CFLAGS += $(call cc-option,-fno-stack-protector)
CFLAGS_SSP := $(call cc-option,-fno-stack-protector)
CFLAGS += $(CFLAGS_SSP)
# Some toolchains enable security related warning flags by default,
# but they don't make much sense in the u-boot world, so disable them.
CFLAGS += $(call cc-option,-Wno-format-nonliteral)
CFLAGS += $(call cc-option,-Wno-format-security)
CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \
$(call cc-option,-Wno-format-security)
CFLAGS += $(CFLAGS_WARN)
# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
# option to the assembler.

3
examples/standalone/Makefile
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@ -85,7 +85,8 @@ endif
# We don't want gcc reordering functions if possible. This ensures that an
# application's entry point will be the first function in the application's
# source file.
CFLAGS += $(call cc-option,-fno-toplevel-reorder)
CFLAGS_NTR := $(call cc-option,-fno-toplevel-reorder)
CFLAGS += $(CFLAGS_NTR)
all: $(obj).depend $(OBJS) $(LIB) $(SREC) $(BIN) $(ELF)

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