llvm dev - Mar 2015 - [LLVMdev] How to Cross Compile libcompiler_rt Static Library?

I was attempting to cross compile on Windows.  I ended up having to find
the list in the CMake build system (not very hard) and manually creating a
makefile to compile them.  Took maybe 2 hours total.

On Sun, Mar 29, 2015 at 1:28 PM, Chao Yan <yanchao2012 at gmail.com>
wrote:
>
> 2015-03-29 15:11 GMT-05:00 Daniel Dilts <diltsman at gmail.com>:
>
>> I need to correct myself.  It is possible to cross compile it on
Windows,
>> but not using the provided build systems.
>
>
> Hi Daniel,
>
> Thanks for helping. I'm using ubuntu 14.04 x86_64 system. I've
tried cmake
> for couple of days until I give up. You are right, using make build system
> seems more feasible. I've combined the compiler_rt/make/platform/
> clang_linux.mk and the compiler_rt/make/platform/clang_macho_embedded.mk.
> So far it could cross-compile all of the files in
> "compiler-rt/lib/builtins/" (*.c files). However, the
libcompiler_rt.a
> still missing functions such as "__aeabi_memset",
"__aeabi_memcpy". These
> functions were in "compiler_rt/lib/biltins/arm/" (*.S) files.
They are not
> included in any of the *.mk files. Do you have any idea on how to add these
> assembly sources to the build list? BTW, did you build the complete
> libcompiler_rt.a at the end?
>
> Thanks,
> Chao
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20150329/a8e0227f/attachment.html>

On 03/29/2015 04:11 PM, Daniel Dilts wrote:
> I was attempting to cross compile on Windows.  I ended up having to 
> find the list in the CMake build system (not very hard) and manually 
> creating a makefile to compile them. Took maybe 2 hours total.
>
I also use my own Makefiles to build compiler-rt for ELLCC. I build for 
ARM, Mips, Microblaze, PowerPC, and x86. This is the list of files I 
came up with: 
http://ellcc.org/viewvc/svn/ellcc/trunk/libecc/src/compiler-rt/sources.mk?view=markup

More info at http://ellcc.org

-Rich

2015-03-29 19:41 GMT-05:00 Richard Pennington <rich at pennware.com>:
> I also use my own Makefiles to build compiler-rt for ELLCC. I build for
> ARM, Mips, Microblaze, PowerPC, and x86. This is the list of files I came
> up with: http://ellcc.org/viewvc/svn/ellcc/trunk/libecc/src/
> compiler-rt/sources.mk?view=markup
>
> More info at http://ellcc.org
>
I've check the compiler-rt source code and try to run  "make
arm-linux-engeabi" in ellcc/libecc directory. I got the following errors:

Making libcompiler-rt for arm-linux-engeabi in compiler-rt-build
arm-linux-engeabi
cp: cannot stat ‘Makefile.lib’: No such file or directory

I've searched through the directory but there is no
"Makefile.lib". Run
"locate Makefile.lib" I find:

/usr/src/linux-headers-3.13.0-45/scripts/Makefile.lib
/usr/src/linux-headers-3.13.0-45/scripts/dtc/libfdt/Makefile.libfdt
/usr/src/linux-headers-3.13.0-45-generic/scripts/Makefile.lib
/usr/src/linux-headers-3.13.0-46/scripts/Makefile.lib
/usr/src/linux-headers-3.13.0-46/scripts/dtc/libfdt/Makefile.libfdt
/usr/src/linux-headers-3.13.0-46-generic/scripts/Makefile.lib
/usr/src/linux-headers-3.13.0-48/scripts/Makefile.lib
/usr/src/linux-headers-3.13.0-48/scripts/dtc/libfdt/Makefile.libfdt
/usr/src/linux-headers-3.13.0-48-generic/scripts/Makefile.lib

I've tried to use these Makefile.lib but they are not working properly:
arm-linux-engeabi
make[1]: *** No rule to make target `install'.  Stop.

Am I missing something? BTW in your makefile line 49:

$(OUT)cp -p Makefile.lib compiler-rt-build/$@/Makefile

The $(OUT) stuff at the beginning seems not useful?

Thanks,
Chao
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20150330/5589c986/attachment.html>