[U-Boot] [U-Boot, 1/2] common: Add CCACHE variable to allow use of ccache
York Sun
yorksun at freescale.com
Thu Aug 22 01:39:46 CEST 2013
On 05/20/2013 10:25 AM, Marek Vasut wrote:
> Prefix HOSTCC and CC with CCACHE variable to allow easy use of ccache.
> In case the user wants to use ccache, exporting CCACHE=ccache will do
> the trick. It is of course possible to either make the cross-compiler
> name into a shellscript which invokes the ccache and the compiler, but
> setting this variable makes use of ccache easier and more convenient.
>
> Using ccache becomes convenient when using MAKEALL for large build
> tests, where the speedup after building the cache for the first time
> is about 4-6 times.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Tom Rini <trini at ti.com>
>
> ---
> config.mk | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/config.mk b/config.mk
> index 1fd109f..d59ded2 100644
> --- a/config.mk
> +++ b/config.mk
> @@ -98,6 +98,8 @@ else
> HOSTCC = gcc
> endif
>
> +HOSTCC := $(CCACHE) $(HOSTCC)
> +
> ifeq ($(HOSTOS),cygwin)
> HOSTCFLAGS += -ansi
> endif
> @@ -140,13 +142,13 @@ binutils-version = $(shell $(SHELL) $(SRCTREE)/tools/binutils-version.sh $(AS))
> #
> # Include the make variables (CC, etc...)
> #
> -AS = $(CROSS_COMPILE)as
> +AS = $(CCACHE) $(CROSS_COMPILE)as
>
> # Always use GNU ld
> LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \
> then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;)
>
> -CC = $(CROSS_COMPILE)gcc
> +CC = $(CCACHE) $(CROSS_COMPILE)gcc
> CPP = $(CC) -E
> AR = $(CROSS_COMPILE)ar
> NM = $(CROSS_COMPILE)nm
> @@ -320,7 +322,7 @@ endif
>
> #########################################################################
>
> -export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
> +export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE CCACHE \
> AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
> export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
>
>
Where did this patch go? I found it useful.
York
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