[PATCH] Makefile:add cross_compiler for Makefile

[PATCH] Makefile:add cross_compiler for Makefile

[Yuanbin Zhou]

In this site(https://rt.wiki.kernel.org/index.php/Cyclictest), It has been shown that you can use "make CROSS_COPILE=<your-compiler-prefix>" to build software ran in other platform like arm & mips, but in fact it does not work, this patch is used to solve this problem.

Signed-off-by: Yuanbin Zhou <hduffddybz@gmail.com>
---
 Makefile | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Makefile b/Makefile
index a48e759..9b31ce4 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,17 @@ sources += signaltest.c ptsematest.c sigwaittest.c svsematest.c sendme.c \
 
 TARGETS = $(sources:.c=)
 
+CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
+AS = $(CROSS_COMPILE)as
+LD = $(CROSS_COMPILE)ld
+CC = $(CROSS_COMPILE)gcc
+CPP = $(CC) -E
+AR = $(CROSS_COMPILE)ar
+NM = $(CROSS_COMPILE)nm
+STRIP = $(CROSS_COMPILE)strip
+OBJCOPY = $(CROSS_COMPILE)objcopy
+OBJDUMP = $(CROSS_COMPILE)objdump
+
 LIBS	= -lrt -lpthread
 RTTESTLIB = -lrttest -L.
 EXTRA_LIBS ?= -ldl	# for get_cpu
-- 
2.1.4

Re: [PATCH] Makefile:add cross_compiler for Makefile

[John Kacur]

On Sun, 27 Sep 2015, Yuanbin Zhou wrote:

> In this site(https://rt.wiki.kernel.org/index.php/Cyclictest), It has been shown that you can use "make CROSS_COPILE=<your-compiler-prefix>" to build software ran in other platform like arm & mips, but in fact it does not work, this patch is used to solve this problem.
> 
> Signed-off-by: Yuanbin Zhou <hduffddybz@gmail.com>
> ---
>  Makefile | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/Makefile b/Makefile
> index a48e759..9b31ce4 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -11,6 +11,17 @@ sources += signaltest.c ptsematest.c sigwaittest.c svsematest.c sendme.c \
>  
>  TARGETS = $(sources:.c=)
>  
> +CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
> +AS = $(CROSS_COMPILE)as
> +LD = $(CROSS_COMPILE)ld
> +CC = $(CROSS_COMPILE)gcc
> +CPP = $(CC) -E
> +AR = $(CROSS_COMPILE)ar
> +NM = $(CROSS_COMPILE)nm
> +STRIP = $(CROSS_COMPILE)strip
> +OBJCOPY = $(CROSS_COMPILE)objcopy
> +OBJDUMP = $(CROSS_COMPILE)objdump
> +
>  LIBS	= -lrt -lpthread
>  RTTESTLIB = -lrttest -L.
>  EXTRA_LIBS ?= -ldl	# for get_cpu
> -- 
> 2.1.4


Thank you for your patch, it looks sane. I'm not sure what version it 
applies against though, when I tried to apply it, it failed.
I did accept the first cross-compile patch, that wasn't suffiencient for 
your purposes, so you need to apply your patch on top of that.

Can you respin it against the following branch please? (and resend it of 
course)

repo: git://git.kernel.org/pub/scm/utils/rt-tests/rt-tests.git
branch: devel/v0.95-devel

Thanks

John